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From YouTube: Applied Hydraulics
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A
Yeah,
well,
let's
start
so
I
mean
we've
got
a
good
week
left.
I
think
we
can
do
some
exciting.
Regarding
microcontrollers
and
automation
and
yeah
microcontrollers
applied
to
hydraulics.
I
actually
got
a
an
mcu.
It's
a
little
wireless
mc2,
it's
coming
today
too,
we
can
do
like.
We
can
get,
go
crazy
and
do
up
to
that.
But
but
I
mean
the
basic
idea:
there
is
okay.
We
we
have
the
capacity
to
automate
like
so
with
simple
microcontroller
scripts
on
arduino,
using
what
we're
you
know,
the
arduino
mega,
what
we
have
already.
A
We
have
a
complete
system,
that's
developed
for
the
controller
itself
for
the
brick
press,
so
I
mean
the
valuable
thing
would
be
understanding.
Well,
how
do
you
go
from
okay,
I'm
gonna
give
it
a
command
run
this
cylinder
and
all
that.
How
do
you
actually
control
real
devices
to
do
to
do
whatever
you
want,
because
for
the
brick
pressing
I
mean
we've
done
that
manually
yeah,
I
mean,
of
course
we
start
with
the
levers.
I
mean
you
have
three
ways
to
go.
A
First,
you
got
this
big
lever
that
you
do
it
actually
physical
ram
press.
You
press
five
of
those
and
you're
like
no
more,
then
that's
why
we
went
to
the
I
mean
we
had
that
we
actually
borrowed
that
from
a
university,
and
I
literally
pressed
like
two
bricks-
and
I
said
no,
I'm
not
gonna
be
doing
this
so
tried
that
and
then
so
then
we
go
to
the
hydraulic,
cb
press
back.
What
was
it
2008
and
yeah?
I
mean
you
have
to
be
there
you're,
the
operator.
A
You're
doing
you
can
do
like
you
know
up
to
like
five
bricks
per
minute
or
so,
like
four.
You
know
four
three
to
four
comfortably
five,
if
you're
really
really
in
there
but
yeah
I
mean
so
so,
yeah,
that's
a
person
that
has
to
be
there
just
to
do
that
and
it
gets
kind
of
old
and
boring.
So
that's
a
definite
good
case.
Okay,
how
do
let's
just
put
that
on
a
micro
control
and
say:
okay,
move
the
cylinder
here,
move
it
there
move
it
there
and
you've
got
a
little
bit
of
feedback.
A
A
A
They
actually
read
you
the
temperature
through
the
code,
so
you
can
have
feedback,
but
but
in
a
brick
press
all
we
got
is
a
pressure
sensor
and
we
say:
okay
when
we
bottom
out,
we
know
we
got
a
reverse
direction
and
then
we
got
to
go
so
far
and
for
the
both
cylinders,
so
so
that
pressure
switch
is
connected
to
it's
basically
like
right
in
front
of
the
valves,
so
that,
if
you
bottom
out
on
either
cylinder,
you
feel
high
pressure
right
there
because
dip.
You
know,
continuity,
fluid
the
fluid
flows.
A
If
you
have
no
resistance,
it's
like
the
pressure
drop
is
negligible.
Once
you
bottom
out
a
cylinder,
the
pressure
spikes
way
up,
you
know
to
your
2500
psi
pounds
per
square
inch,
the
regular
pressure,
the
hydraulics
we
use.
I
mean
we're
running
the
the
pumps
we
we
have,
they
they
go
to
3000
psi,
so
we
got
3000.
So
you
think
about
it.
Okay,
I
got
a
little
cylinder,
that's
pressing!
Well,
if
you
have
fluid
at
3000
psi
that
once
every
square
inch
you
got,
you
got
push
in
with
3
000
pounds.
A
I
mean
that
is
some
significant
stuff,
so
an
entire
five
inch
cylinder,
pi
r
squared.
That
number
turns
out
to
be
like
20
tons
altogether,
so
40,
000
or
so
pounds,
because
you've
got
that
much
volume
or
area,
surface
area,
fluid
and
you're,
pressing
up
and
stuff
like
that.
So
the
force
is
there,
you
know
and
then
with
very
subtle
signals
and
just
lines
of
code.
We
say:
okay,
we
control
that
amount
of
force
very
simply
with
the
microcontrollers.
So
that's
that's
what
we
can
do
for
the
breakpress.
A
There's
a
flow
sequence
like
you
know,
you've
got
effectively
like
you've
got
soil.
That's
in
the
hopper.
You've
got
a
intermediate.
A
cylinder,
that's
the
drawer,
it's
a
it's
called
the
soil
loading
drawer.
So
a
thing
that
basically
opens
up
the
compression
chamber,
so
it
basically
slides
back
and
forth
it
opens
up
the
compression
chamber
closes
it.
A
A
You
compress
it
down
to
about
two
to
one,
so
you
start
with
about
eight
by
six
by
twelve,
so
the
six
by
twelve
is
the
flat
face
of
the
block
six
by
twelve,
it's
compressed
to
four.
You
start
with
about
eight
inches
so
that
the
chamber
is
like
eight
inches
deep
it
compresses
to
four
and
at
that
point
you've
got
block
that
are
we
took
some
measurements
they're
like
700
psi
strong.
A
Those
are
like
plain
unstabilized
block.
We
measured
that
long
ago,
like
20,
I
mean
2009
or
10..
That's
the
kind
of
numbers
we
get.
But
what's
that
mean
like
adobe
like
a
construction
method
of
adobe,
they
do
like
300
psi,
that's
their
blocks
for
building
homes.
A
A
A
These
are
these
bricks,
no
they're,
not
not
hot
they're,
just
not
they're,
just
there's
no
fruit,
it's
like
they
just
compress.
No,
it
doesn't
heat
up.
It's
it
just
kind
of
compresses.
That's.
A
There's
two
ways
like
we:
we
did
raw
block
straight
into
a
wall,
but
they
will
settle
like
at
the
end
of
the
day.
They'll
settle
like
three
quarter
inches
like
the
very
top
ones,
because
there's
some
moisture
and
the
moisture
evaporating
from
the
block
will
actually
settle
very
little
per
block.
But
if
you've
got
you
know,
eight
feet.
Wall
you'll
get
like
an.
A
A
It
depends
how
you
want
to
do
it
because
offside.
That
means
you've
got
huge
transportation
costs.
Yes,
that
is
more
controlled
because
we
go
to
kansas
city.
I
don't
even
know
if
there's
maybe
there's
some
like
ordinances.
That
say:
oh
you
can't
even
like
dig
a
pond
in
your
backyard
or
something
because
that's
what
we
would
either
use
that
for
no,
but
probably
not
because
people
dig
out
basements
what
they
do
with
that
soil.
A
So
that
would
be
a
perfect
case
to
do
it
on
site,
but
you'd
have
to
have
the
right
soil
like
you
might
have
to
truck
and
soil.
So
you
have
quality
control
issues
there,
but
I
mean
I
would
I
would
do
it
straight
from
the
ground
if
the
build
technique
allows
for
that
setting.
So,
for
example,
you
lay
you
lay
like
a
brick
wall
now
who
cares
that
it
settles
like
an
inch
right
like
a
block
wall?
So
that's
a
definite
okay
yeah.
A
You
can
do
that
but
say
you're
you're
going
to
put
a
top
plate
on
it.
You
have
to
be
careful
like
how
it's
going
to
settle
around
windows.
If
you
don't
have
any
windows,
if
it's
like
a
little
bunker
yeah,
you
could
just
build
it
threshold,
just
settle
but
who's
going
to
notice,
but
depends
on
your
situation.
A
A
Different
different
qualities
of
soil
determine
how
much
lime
and
cement
you
you
could
use
for
best
stabilization.
Some
people
stabilize
with
plain
lime,
some
stabilize
with
cement
and
depends
like
on
the
clay
versus
sand
content
of
of
your
block.
So
it
and
that's
once
again
like
this
material
science
stuff,
where
the
devil's
in
the
details,
like
maybe
for
some
block
it'll,
actually
work
better
with
with
just
plain
line
and
depends
on
up
to
what
psi
and
stuff
like
that.
So
there's
there's
details
there.
A
It's
on
a
soil
composition
because
I
mean
there's
all
kinds
of
different
clays,
there's
all
kinds
of
mixtures.
Of
how
much
I
mean
other
particles
like
like
small
pebbles
or
or
sand
so
so
clay
is
actually
clay
is
not
does
not
refer
to
like
the
material
type
as
much
as
particle
size
because
use
because
we
call
clay
anything.
That's
super
super
fine,
very,
very
fine!
Then
you
go
up
to
silt,
which
is
a
little
rougher
than
sand
kind
of.
A
Like
you
recognize
sand,
you
can
see
the
grains
clearly
for
clays,
I
mean
you
can't
hardly
see
the
can't
really
see
the
particles,
they're
very
small,
but
you
go
up
to
silt
sand
and
then
gravel
and
then
rock,
but
clay
could
be
that
that
same
rock.
That's
just
pulverized
super
super.
Fine,
that's
something
depends
how
you
define
clay,
but
clay
refers
from
what
I
understand
more
to
the
particle
size
rather
than
the
composition,
so
you
can
have
different
kinds
of
clays.
A
A
We
have
the
components
to
build
the
exact
controller
that
we
use
today
way
it
works.
We
just
put
a
select,
have
a
selector
switch
there
we
switch
it
to
one.
One
is
full
block.
Two
is
like
half
block.
Three
is
like
whatever
three
quarter
block
and
then
another
selection
is
just
to
prime
it
just
basically
reset
so
we've
got
the
selector
switch
and
then
we
have
an
arduino
to
it
and
then
connected
to
the
whole
hydraulic
system
through
solenoid
valves
which
are
the
high
pressure.
A
These
are
these
large
things,
the
pressure
sustaining
things.
Those
are
things
we
turn
on,
just
like
the
gas
solenoid
on
a
torch
table,
which
is
like
a
small
thing
that
just
turns
on
gas
at
low
pressures.
A
Here
we've
got
these
sizable
solenoids
because
they
are
very
they're
rated
for
3000
psi.
They
got
to
have
enough
meat
on
them
to
hold
that,
but
through
the
microcontroller
and
a
little
board,
which
is
a
relay
the
relay.
So
this
is
the
board.
There's
the
relay.
That's
next
to
the
board
and
that's
what's
giving
the
couple
of
amps
like
two
amps
at
12
volts
for
the
actual
solenoids
is.
A
E
A
C
A
Yeah
yep,
so
the
only
feedback
so
well.
How
do
you
do
that?
So
there's
like
details
about
logic.
Well,
how
do
you
get
that
because
you
have
to,
we
can
go
I
mean
if
you
want
to
look
at
the
computer.
This
is
all
documented,
but
basically,
when
you
have
the
drawer,
you
have
to
close
it.
You
have
to
close
the
drawer,
so
there's
a
hole.
Basically
it's
a
6
by
12
hole
on
the
brake
press.
You
got
to
close
it
close
it
off
with
the
the
we
call
it
the
soil
loading
drawer.
A
It's
a
thing!
That's
on
one
one
cylinder
it
just
moves
back
and
forth,
but
you
have
to
align
it
so
it
closes
the
chamber
like
right
there
not
like
there
or
there
it's.
You
know
you
gotta
close
the
chamber
can't
be
like
partially
open.
So
the
question
there
is-
and
that
goes
back
to
the
logic
like
how
do
you
do
that
if
you
have
only
one
sensor
like
one
pressure
sensor
that
detects
only
when
you're
at
the
end
one
end
or
the
other
end?
How
would
you
do
that?
A
E
A
There
you
go
you
just
time
it
you
say:
okay,
half
the
time,
we're
about
there,
it's
not
exactly
half,
because
it's
like
not
not
exactly
at
that,
but
yeah.
I
mean
it's
a
very
simple
timing,
so
other
people
will
claim.
Oh
well,
you
might
want
to
have
like
another
sense,
positional
sensor
there,
so
you
make
sure
you're
there.
A
But
I
mean
this
is
not
rocket
science.
You
know,
you've
got
a
certain
flow.
You
know
exactly
how
much
it
takes
to
go
back
and
forth.
Therefore,
you
take
a
simple
ratio
and
that's
it.
So
that's
what
we
have
in
the
code
go
like
about
halfway
now,
there's
a
little
caveat
there,
because
the
cylinders
don't
travel
the
same
speed
both
way,
and
why
is
that?
A
G
H
G
A
A
Well,
the
fluid
still
has
to
escape,
but
you're
actually
not
forcing
it
the
other
way,
because
it's
not
connected
to
power
from
the
other
side,
but
that
fluid's
got
to
go
somewhere.
B
E
Well,
actually,
it's
it
happens
to
be
the
opposite
of
that.
So
why
so
what's
happening
so
force
over
your
cylinder
is
pressure
times
area.
So
where
is
the
force
greater
on
which
side?
Which
side
is
it
greater
on
that
side
yeah
on
the
left
side,
because
you
got
the
whole
piston
that
you're
pushing
against?
If
that
rod
is
in
the
way
that
area
that
rod,
which
it's
a
2.5
inch
rod,
it's
a
heavy
rod
2.5
inch
within
a
5
inch
cylinder.
A
B
B
You
guys
are
saying
that
the
right
side
went
fast
all
right.
This.
D
H
A
A
Well,
we
haven't
talked
about
what
the
loads
are,
because
we're
not
talking
about
an
external
we're,
just
saying
the
ideal
cylinder
you're
not
really
moving
anything
yet
because
the
caveat
there
is
well
when
you
got
so
much
rod.
If
your
force
is
too
low
like
you
might
not
be
able
to
move
something,
so
you
always
have
to
keep
that
in
mind,
but
you
need
enough
so
like
when
we're
compressing.
Okay,
so
then
the
next
question
is
when
you're
compressing,
which
side
do
you
want
to
press
on.
A
G
The
diagram
there
for
your
machine-
so
that's
say,
that's
the
compression
chamber.
You've
got
the
big
cylinder,
which
is
that
one
up
there,
you
got
your
compression
chamber
and
you've
got
your
cylinder
you're
compressing
by
going
up
so
that
your
little
cylinder
in
there
connected
to
that
rod,
you
know
you're
pushing
up
on
all
the
area
you
have,
because
you
want
that.
This
is
like
about.
A
But
you
also
don't
don't
need
too
much
like
you.
Don't
need
5000
psi.
It
turns
out
that
actually
like
about
23
000
psi
is
like
that's
all.
We
need
to
make
them
as
strong
as
you
need
because
think
about.
If
you
like,
compress
a
rock
even
more,
nothing
happens,
it's
already
compressed,
that's
that's
kind
of
how
it
works.
H
G
Diam,
your
radius.
F
A
D
A
D
A
You,
the
valves
that
we
use,
unlike
the
actual
air
cylinders,
we're
using
they're,
both
bi-directional
so
you're,
actually
opening
it
one
way
and
opening
up
another
way
so
that
you're
either
feeding
into
one
the
bottom
port
or
the
top
port.
A
So
you
got
your
valve,
you
connect
it
to
the
bottom
and
top
ports,
because
you
know
the
rod
dimensions
and
the
cylinder
dimensions.
You
can
hold
that
up.
Saying:
okay!
Well,
it
takes
me
so
long
to
extend
it
so
long
to
contract
it.
Therefore,
I
have
complete
control
over
like
where
this
thing
needs
to
go.
F
You
know
so
I
just
wanted
to
sort
of
revise
the
question
that
you
just
asked
it's
more
so
because
I
guess
I'm
thinking
about
inter
input
and
output
pressure
right
so
yeah
when
we're
pressing
the
highest
amount
of
output
pressure,
yeah.
G
D
F
E
Well,
no,
no!
No,
like
just
kind
of.
G
C
E
H
A
These
big
plates
one
inch
plates
but
where's
the
fluid
going
in
it's
in
the
left
port.
F
A
So
let's
take
and
take
a
look
at
cb
press
v1708
on
on
a
wiki,
but
that
has
like,
like,
for
example,
in
development,
template
there's
like
yeah.
The
design
documents
show
that
I
mean
there's.
A
You
go
halfway
to
close
the
chamber
and
so
forth,
but
all
you
need
is
like
the
big
point
of
that.
Is
you
just
need
one
pressure
sensor
to
do
it
and
that's
the
thing
there.
We
started
not
with
a
pressure
sensor
but
with
positional
sensors.
So,
okay,
when
the
drawers
or
it's
at
the
beginning
or
it's
at
the
end,
we
would
well.
We
actually
had
both
the
pressure.
Sorry,
the
pressure
sensor
and
the
positional
controller.
A
Then
after
thinking
about
it's
like
well,
why
we
need
that
more
hardware
and
then
you
gotta
adjust
it.
You
gotta
make
sure
it's
like
right
there.
Why
do
that?
If
you
could
just
measure
the
time
and
take
one
half
of
it?
So
that
was
obvious,
but
not
obvious
up
front,
because
you
know
didn't
really
appreciate
that
or
maybe
didn't
think
about
it
enough,
but
you
but
it's
reliable
motion,
like
you
know
how
much
fluid
you
have
and
except
maybe
like
if
you've
got
a
super.
A
A
Have
even
more
that
means
the
velocity
of
that
cylinder
is
going
to
be
like
way
high,
in
which
case
that
time,
in
terms
of
how
quickly
the
solenoid
closes,
which
is
about
50
milliseconds,
it's
a
fraction
of
a
second.
A
But
if
you're
going
super
fast,
that
may
mean
like
a
half
inch
difference
where
the
cylinder
ends
up.
So
it's
like
at
the
very,
very
high
speeds,
which
you
never
really
did
that,
but
there
would
be
a
limit
yeah
there.
You
would
need
a
positional
sense,
positional
sensor
and
probably
stop
like
a
little
before
so
you
know
yeah,
but.
A
Got
the
solenoid
valves,
let's
see.
E
D
F
On
you
know
the
combination
of
the
shredder,
the
hydraulic
threader
and
the
ced
press,
like
I
know,
I'm
going
to
need
to
build
a
big
copper.
You
know
so
the
container
in
the
structure
might
be
similar
to
the
cd
press
and
the
function
may
be
similar
to
the
shredder
different
blade
design.
G
F
F
E
A
A
D
A
And,
let's
see
so
so
in
terms
of
time,
it's
noon
time
right
now.
What
are
we
doing
here?
So
we
want
to
put
a
time
limit
on
how
much
we're
talking
here
in
class
and
then
do
we
actually
want
to
go
out
there
and
take
the
components
there
and
start
putting
one
together
I
mean
that's
different
than
what
we
were
talking
about,
which
is
to
build
the
controller
for
the
brick
press.
So
I
mean
what
do
we?
What
do
we
want.
E
So
maybe
the
automation.
C
G
H
C
F
Yeah,
so
I'm
saying
that
when
we
did
like
the
electronics
and
the
control
system
design
for
the
3d
printer,
you
know
we
weren't
making
sure
that
the
enclosure
was
weatherproof
or
anything
like
that
right.
But
there
are
different
considerations
for
the
cd
present.
I
think
they're
transferable
to
other
types
of
systems
that.
C
A
A
It's
not
like
an
electric
mode
like
if
you
put
an
electric
motor
out
or
you
better,
make
sure
that's
a
waterproofed
electric
motor
and
all
that
here,
like
dirt
and
water,
do
not
matter,
because
I
mean
hydraulic
equipment
is
typically
designed
for
that
kind
of
environment.
You
got
heavy
machines
that
are
in
a
dirt
and
dust
and
elements
you
go
underwater,
yeah
they're
waterproof
I
mean
they
got
rubber
seals
around
all
the
shafts
and
everything
else.
The
hoses
are
self-contained
and
naturally
you
have
to
be
because
otherwise
fluid
would
be
leaking
out.
A
Oh
no
problem,
I
mean,
for
example,
do
you
see
like
those
barges
with
a
big
hoe
like
dredging
like
digging
stuff
up
it's
going
right
under
water
like
our
back
or
whatever?
You
can
be
digging
a
pond
and
just
digging
from
right
under
a
pond,
because
there's
no
fluid
exchange
unless
you
got
leaks.
You
know
stuff
like
that,
but
short
of
leaks
here.
F
B
A
Well,
I
mean
manual
to
quantify
what
you
just
said:
we're
talking
about
3000
psi.
E
F
No
open
source
submarine
systems.
A
C
A
A
Yeah,
so
all
we
have,
there
is
there's
a
toggle
switch,
we're
just
selecting
for
which
regime
you
want.
One
is
like
full
brick,
two
is
half
or
whatever
three
quarter
in
half
and
then
like
re.
I
think,
there's
a
fourth
one,
that's
reset!
No!
This
is
not
connected
to
the
current
lcd,
it's
just
an
arduino
uno
and
it
and
the
arduino
uno
is
sitting
below
your
relay
and
that
relays
got
four
channels
because
you
got
up
down
left
right.
You
got
the
main
cylinder.
You
got
the
second
laser.
A
You
need
four
channels
of
control,
so
you
you
connect
it.
You
know
power,
that's
like
power
terminal
whatever,
but
this
this
is
like,
where
the
actual
so
so
you
put
in
signal
one
way
into
the
arduino,
and
that's
actually
through
these.
These
headers
you
put
in
you,
connect
the
arduino.
Well,
it's
actually
self-connected
already.
The
arduino
is
on
the
bottom.
So
it's
feeding
that
the
signals
through
the
power,
the
power
wires.
They
go
here
and
they
go
to
these
external
connectors
to
your.
A
To
your
really
so,
let's
see,
let's
do,
let's
just
go
into.
I
think
this
one
doc
might
show
cb
controller.
A
I
mean
these
are
the
hydraulic
solenoids,
that's
what
they
look
like.
They
sit
on
top
of
this
aluminum
block
where
they
bolt
onto
this
block,
there's
a
fluid
in
and
out
which
is
the
feed
and
then
there's
these
four
like
one
channel
back
and
forth.
So
two
hoses
out
of
this
two
hoses
out
of
that.
So
you
put
two
of
these
valves
on
top
of
this,
and
you've
got
two
bi-directional
valves
coming
out
of
it.
A
A
A
A
Keep
it
simple
for
now,
but
like
definitely
would
be
nice
to
have
a
little
lcd.
So
that's
the
brick
brick
press
that,
with
this
particular
controller,
at
like
18
horsepower
engine
gets
you
like
seven
blocks
per
minute.
Here's
like
specifying
all
the
other
components
that
going
here.
Maybe
we
don't
get
too
heavy
into
this,
I
mean,
but
you,
those
are
the
solenoids
and
those
are
effectively
you're.
Talking
about,
like
100
bucks,
a
channel
pretty
much
comparable
to
a
regular
manual
valve.
A
A
You
got
things
like
bypass
valves
like
before
you
feed
fluid
into
the
system.
You
want
to
have
a
safety
valve
which,
if
it
over
pressures,
you
set
that
knob
on
top
and
it
will
bypass
fluid
back
to
the
power
cube
to
the
return
and
things
like
that
got
a
little
pressure
gauge
on
it
to
know,
know
where
you're
at
you
can
see
the
pressure
going
every
time,
you're
pressing
it's
kind
of
like
low,
maybe
300
psi.
Then
when
you
hit
the
pressure
it
goes
to
like
2
300,
you
know
it's
working,
let's
see.
A
In
practical
in
practical
layout,
this
is
kind
of
this
kind
of
shows
how
it's
laid
out.
So
you
got
your
power
cube
here.
You
got
fluid
going
into
this
side
here
you
can
see
what
pressure
you're
at
it's
got
the
safety
bypass,
which
would
be
actually
returns
around,
so
that
actually
is
accurate.
Actually
it's
connected
to
these
fittings
here.
This
is
like
your
visual
bill
of
materials
diagram.
You
click.
A
A
A
Oh,
no,
no,
no,
that's
actually
correct.
The
pressure
switch
once
activated
will
well
what
happens
to
a
pressure
switch.
No
pressure
is
just
a
signal.
You're
just
saying
oh,
do
I
have
high
pressure
or
not
yeah.
I
don't
know
what
those
were
the
red
and
black.
That's,
maybe
that's
power
to
the
switch,
but
the
the
way
it
works
is
you're
either
sending
on
or
off
to
the
microcontroller
and
when
it's
on,
because
this
thing
is
just
binary.
It's
like
when
you
hit
that
2300
psi
and
you
set
it.
A
A
So
it's
just
it's
similar
to
the
thermistor
where
well,
it
conducts
proportionally
to
tell
you
the
temperature
here
it's
just
on
all,
but
those
wires
would
be
going
to
the
controller
and
the
controller
says.
Oh,
I
got
high
pressure.
Let
me
do
something
else,
because
the
logic
is
defined
as
such,
so
there
you
go.
We
like
to
use
quick
couplers
so,
like
you
don't
have
to
like.
A
A
D
F
Quick,
the
disconnects
yeah.
F
E
F
F
A
The
quick
connects
the
important
point
about
them:
they're,
not
just
quick,
connects.
They
are
self
closing
quick
connects
because
you
can
disconnect
something
and
it's
going
to
leak
on
you.
These
have
ball
valves
with
a
spring
that
when
you
disconnect
them,
the
ball
goes
against.
Like
the
ball
gets
pushed
in
when
it's
connected.
It
goes
against
the
seal
when
you
disconnect
it,
so
you
just
got
a
little
dribble
of
fluid.
A
You
see,
you
do
see
a
bunch
of
leaks
around
here
that
these
things
every
time
you
take
them
apart,
they
do
leak
a
little
a
few
drops.
They
do
have
these
other
things
called
flush
face,
quick
couplers
which
do
not
leak
and
they're
more
like
twice
as
expensive
flush
face
quick
coupler.
A
F
So
this
is
actually
something
that
I'm
curious
about
because,
like
you
know,
I
think
for
some
of
the
simpler
applications
like
a
shredder
or
a
chipper,
or
something
like
that
not
as
important,
but
if
I'm
building
towards
a
tractor
with
attachments
and
all
of
my
lines
I
stay,
the
sizing
of
the
hydraulic
fluid
is
important.
If
I'm
going
to
attach
them.
You
know
if
I
need
to
move
the
tractor
itself.
A
Yes,
that
consideration
is
taken
all
solved
by
the
size
of
your
hydraulic
reservoir,
but
remember
that
okay,
say
you're,
going
to
pick
up
a
hole
like
a
backhoe
attachment
and
it's
got
big
cylinders,
but
remember
all
that
fluid
is
in
there
already.
So
you
don't
need
to
like
the
amount
of
change
of
fluid
is
only
the
differential
between
like
the
extended
and
closed
position
because
you're
if
you're
pumping
it
one
way
it's
going
out
the
other.
A
The
only
thing
that's
you
have
to
account
for
is
the
difference
in
one
way
to
compare
to
the
other,
and
that's
only
the
diameter
of
the
shaft
of
a
cylinder
for
hydraulic
motors.
It
doesn't
matter
if
you're
spinning
one
way
or
the
other.
The
fluid
that
comes
in
is
equivalent
to
the
fluid
one
way
and
the
other
are
the
same.
A
So
that
goes
into
like
sizing
of
your
hydraulic
tank.
Well
say
you
do
have
like
some
big
cylinder
and
you
got
this
fat
rod
on
and
it's
pretty
long.
Well,
you
better
have
enough
spare
volume
in
your
hydraulic
fluid
tank
so
that
when
the
excess
fluid
from
one
side
versus
the
other
comes
in
you're
not
spilling
your
tank.
So
typically
we
just
go
okay,
five
gallons,
five
gallons
hydraulic
reservoir.
A
That's
never
been
an
issue
in
terms
of
you
know
like
brick,
press
or
hull
like
backhoe
that
we
built
and
other
things.
So,
but
it's
effectively.
A
A
A
That's
not
under
pressure
it's
open
to
the
air.
It's
got
a
breather
on
it,
so
it's
it's
not
pressurized.
In
any
way
the
high
pressure
is
high.
Pressure
is
going
to
be
like
beef
like
on
the
you
know,
the
high
pressure
side
like
before
any
implement
like
before
the
cylinder.
One
side
is
high
when
you,
when
you're
spilling
that's
that
fluid
say
into
the
or
the
fluid
on
the
rod
side,
that's
going
to
be
low
because
it's
connected
to
tank
whatever's
connected
directly
to
tank
before
the
active
element.
A
C
D
A
A
So
it
fills
you
got
it
it's
now.
It's
active
yeah,
okay,
as
far
as
the
actual,
so
that's
I
mean
you
can
copy
this.
Exactly
as
that
is
you
got
the
logic
sequence
here.
That's
what
we
currently
use
and
kind
of
goes
step
by
step.
There's
like
four
four
steps.
A
So
in
let's
see
this
control,
let's
see
look
at
the
table
of
contents
here.
What
are
the
important
things.
A
Know
that
we
just
saw
this
working
design
working
duck,
that's
repeated
there.
A
A
No,
I
think
those
may
be
the
same
document
so
so,
let's
look
at
the
actual
builds.
Let's
just
get
some
facebook
pictures.
A
A
Probably
most
useful
is
take
a
look
at
some
of
the
as
built
like
how
the
controller
looks
here
so
in
this
yeah.
Actually,
we
changed
it
a
little.
That's
that's
actually
an
old
one,
but
you
still
have
the
two
blocks
with
that's
the
solenoids
that
were
not
next
to
each
other,
but
like
one
on
top
of
each
other.
Here's
the
waterproof
enclosure.
So
you
got
these
hoses.
The
quick
connects
that
that's
how
these
these
two
quick
connects,
go
to
the
cylinders
and
then
these
other
ones.
A
This
one
here
is
like
inlet
and
I
can
see
like
the
pressure
sensor
right
there,
which
is
just
giving
a
signal
into
the
controller
and
this
one.
We
we
had
the
box
where
you
actually
control
it
like
up
down,
left
and
right
with
the
buttons
as
well,
and
we
kind
of
got
rid
of
that
because
we
just
put
a
button
reset.
You
know
so
move
the
when
you
when
you
start,
you
want
to
make
sure,
like
you,
lower
your
cylinder.
A
So
if
there's
high
pressure,
you
lower
the
main
cylinder
and
you
retract
the
drawer,
so
that
everything
is
open
and
we
control
that
by
the
manual
buttons.
But
we
didn't
really
find
a
great
use
case
because
that's
only
like
when
you're
messing,
whether
it
gets
stuck
so
we
just
say:
okay,
let's
just
zero
it,
that's
all
we
need.
It
just
simplifies
the
controller
in
terms
of
a
feature
that
we
didn't
really
find
a
lot
of
use
for,
but
after
that
we
did
yeah.
A
This
is
more
like
the
mechanical
stuff
yeah,
and
this
is
heavy
stuff.
You
got
the
legs
and
that's
that's
pretty
much.
What
the
machine
looks
like
the
controller.
If
you
take
a
look
at
it,
it
looks
like
it's
mounted
like
right
there.
A
We
mounted
like
right
on
the
side
right
now.
We
have
the
same
kind
of
like
the
one
inch
guide
rods
that
the
the
drawer
basically
moves
back
and
forth
and
glides
on
these
rods.
So
we
kind
of
have
the
same
system
as
the
bushings
for
the
cnc
torch
table,
where
we
just
got
a
plastic
3d
printed
piece,
the
bushing
inside
and
then
going
on
rods.
So
you
get
nice
straight
motion
and
then
you
got
on
top
of
the
plastics.
A
This
is
like
the
idea
of
like
using
both
plastic
and
steel,
so
that
you
got
heavy
bolts
and
another
steel
plate
on
top,
so
you
create
the
geometry
of
plastic,
but
any
structure,
because
now
here
you
need
structure
like
you
need
that
metal
plastic
I
mean
you're.
Talking
about
you,
know
thousands
of
pounds
of
force
that
you're
pressing
you're.
You
know
the
frame
could
be
like
you
know.
The
dangerous
part
is
like
jam
conditions
like
you,
hit
a
rock
and
then
like
you,
get
all
that
force
on
the
steel.
A
Typically
like
you,
don't
need
all
this
mass.
If
it's
like
just
pressing.
Well
the
pres,
the
press
part,
you
need
all
that
mass
and
in
the
vertical
structure,
but
under
normal
conditions
like
as
far
as
the
drawer,
moving
back
and
forth,
there's
not
much
going
there
unless,
like
there's
a
rock
that
gets
in
there
and
you're,
you
know
you're
breaking
a
rock
and
then
you
get
the
pressure
spikes,
so
you
do
need
like
like
there.
Plastic
would
normally
be
good,
but
no,
not
not.
A
A
Well,
very
ineffectively,
that's
not
I
mean,
as
far
as
crushing
rocks
you
know,
if
you
have
a
chamber
full
of
rocks,
I
mean
rocks
are
more
than
3000
psi,
so
the
the
force
we're
actually
exerting
on
it
is
that
3000
ps.
You
got
20
tons
and
you
have
to
divide
that
across
72
inches
right
6
by
12
inch,
so
20
tons,
that's
like
what's
that,
come
out
to
like
200
pounds,
400
pounds
500
pounds
per
square
inch
that
you're
pressing
on
the
soil
while
you're
inside
the
cylinder.
A
A
Cans,
that
would
be
you
get
blocks
of
crushed
cans
that
you
can
melt
down,
then,
for
your
further.
G
A
These
topics-
here,
it's
not
a
power,
cube
yeah,
any
questions
on
a
cb
press
I
mean
we've
got
the
full
cad
like
we
got
the
dxf
cutting
files
that
you
would
take
to
your
local
fab
shop
or
on
a
torch
table
that
we're
developing
we're
finding
out
man
like
the
belts
we
got
to
figure
it
out.
We've
got
a
little
bit
of
backlash
like
I
think
we
can
cut
blades.
Now
we're
pretty
good,
oh
ken,
by
the
way,
any
further
developments
on
the
torch.
D
A
Yes,
so
I
mean
we're
like
getting
ready
to
cut
and
we're
good
enough
to
cut
blades,
so
I
mean
you
can
take
our
dx.
The
ultimate
proof
here
would
be
now:
okay,
dxf
files
from
before.
How
do
you,
okay
so
say,
say
you
want
to
build
this
brick
press?
Actually,
the
physical
structure,
you
you
want
to
find
like
where
the,
where
the
files
I'll
just
show
you
that
that's
the
so
go
to
17.0808,
which
is
our
production
version.
A
These
will
be
your
files
for
half
inch
quarter,
inch
and
eighth
inch
steel.
So,
let's
see
because
that's
like
the
hopper,
for
example,
is
eighth
inch.
Steel.
Some
parts
are
a
quarter
like
the
hopper
seat.
Most
of
it
is
half
inch,
which
is
the
structure,
but
you
need
that.
But
here
I
mean
what
are
the
dxf
files
looking
like
they
look
like
dxf
files.
If
you
double
click
on
it,
what
happens
you
open
you
open
it
up
in
librecad,
that's
comes
stuck
with
osc
linux,
then
you'll
see.
A
Here
you
go.
Here's
the
hopper
parts
cut
it
out
for
me
please,
and
they
do
that.
So
we've
got
digital
fabrication
capacity
here
to
do
this,
like
the
half
inch
faster,
so
these
are
cut
out
of
like
five
by
ten
or
four
by
eight
sheets
of
of
virgin
steel.
So
that's
like
that's
all
the
parts,
that's
like
the
arms
and
drawer
and
this
and
that
and
what
you
can
do
is
from
freecad.
If
you
have
the
3d
cad
file,
you
can
export
dxfs
and
then
get
these
files.
So
this
this
all
exists.
A
You
can
actually
take
this
to
a
local
fabricator
and
pending,
like
any
like
interoperability
issues,
they'll
cut
it
for
you
right
away.
Like
last
time.
I
took
this
like
some
parts
weren't
showing
up
like
whatever,
but
there's.
Definitely
the
file
interoperability
issues
like
dxf
you'd,
think
that
would
be
easily
accessible
by
anybody,
but
there's
different
versions
of
dxfs
and
like
depending
on
the
year.
It
was
produced
so
like
last
time.
A
Actually
we
had
some
trouble,
they
couldn't
get
the
part,
so
I
had
to
like
okay,
here's
the
pile
again
again,
but
typically
this
will
be
straightforward
and
just
get
these
things
cut
on
our
torch
table
like
if
we
have
a
four
by
four
by
four
area,
we
could
only
do
like
you
know
we
actually
wouldn't
be
able
to
fit
those
long
ones,
because
those
are
like
pretty
much
six
feet,
so
we
have
to
build
a
larger
table
for
that.
Okay,
but
that's
accessible.
A
So
if
you
want
to
do
it
replicate
this,
you
can,
let's
take
a
look
at
the
power
cube.
Did
you
guys
see
this
video
here
that
that's
that's
a
quick
walk
through
of
a
of
an
actual
build,
but
I
mean
the
build
yeah,
that's
built
as
one
thing,
but
I
mean
this.
This
is
not
the
latest
one.
The
latest
one
is.
This
is
like
a
version
from
whatever
that
was
a
few
years
ago,
but
the
concept
is
the
same.
You
always
got
an
engine.
A
A
Right,
if
you
have
batteries,
then
you
can
have
a
lot
of
force.
I
mean.
Actually
a
battery
powered
tractor
does
make
sense
like
put
some
nickel
iron
batteries
on
it
and
stuff.
So
like
in
a
power
cube,
you
saw
those
quick
connect
so
that
all
you
need
is
like
input.
Output,
quick,
connects
you
connect
to
it.
A
A
A
So
the
engine
is
a
core
like
this
one
is
a
27
horsepower.
You
could
use
whatever
kind
of
engine
you
have
and
then
size
the
pump.
According
that's
the
that's
actually
the
fuel
tank
assembly.
This
is
the
hydraulic
tank
with
a
breather
like
that's
open
to
the
air,
and
these
we
just
hang.
We've
got
plenty
of
these
actually
like
in
old
power.
Cubes
or
the
one
we
took
apart,
these
tanks
like
we
can
put
on
another
frame
and
make
them
work
pump
plate.
A
This
is
when
we
made
our
own
pump
plates,
but
you
can
also
get
a
ready-made
like
a
pump
mount,
because
this
is
standard
components.
You
can
get
a
ready-made
pump
pump
mount
with
a
bolt
pattern,
that's
like
on
the
engine
and
then
bolt
pattern
standard,
volt
pattern
on
a
pump
control
panel.
Actually,
if
you,
if
you
look
at
that,
it
has
three
I'll
talk
about
the
third
one,
the
third
yeah,
so
control
panel
cooler,
you
gotta
cool
the
fluid
there's
the
battery
there.
A
Frame
I
mean
we
can
weld
that
we
can
weld
it
out
of
rebar.
I
mean
I'd
actually,
so
actually
the
biggest
difference
right
now.
What
we're
doing
is
this
has
all
the
components
on
it
now
we're
saying:
okay,
let's
make
a
cube
with
only
this,
with
only
the
tank
fuel
tank
hydraulic
system,
like
the
cooler
fan.
A
A
That's
the
engine
mount!
That's
how
we
did
it
in
that
case.
Do
that
and
use
that
for
all
the
power
cubes,
you
only
need
like
five
gallons.
You
just
need
fuel
and
cooling
and
and
hydraulic
oil.
You
need
that
once
you
don't
need
to
repeat
that
in
all
the
all
the
modules,
if
you're
doing
scalable
power
units,
so
that's
our
next
step.
A
That's
what
we're
going
to
do
on
this
tractor.
Do
one
mother
with
the
hydraulics
and
the
other.
Is
engine
engine
pump
separated
further,
because
we
know
that
the
engines
and
pumps
are
the
things
that
break
the
engine
engine
pretty
much.
That's
what's
gonna
go
out
on
you
after
a
thousand
hours,
these
are
like
kind
of
like
throwaway.
A
Almost
like
throwaway
engines.
I
mean
engines
last
thousand
for
engines
like
this
five
thousand
for
like
a
five
thousand
hours
for
like
a
better
engine.
Here
we
use
the
double
chain.
Coupler,
that's
effective!
That's
one
way
to
do
it
right
now
we're
using
and
we
welded
up
that
engine
mount
yeah,
so
quick
connect
links.
A
You
might
have
seen
that
on
our
chains,
that's
a
way
to
get
flexibility
in
in
the
mounting,
but
we
can
also
do
stiff
like
because
there's
not
it's
not
too
complex,
like
stiff
couplers
work
on
this
too
love
joy,
couplers,
which
are
those
ones
with
a
rubber
piece
in
between
them.
We
found
that
the
rubber
piece
would
melt
out,
so
we
don't
use
that
anymore.
A
And
then
you
got
a
suction
hose
on
one
side,
so
you
connect
that
to
the
hydraulic
reservoir
and
that
you
want
to
be
fat,
so
you
don't
have
any
resist
because
it's
not
under
pressure.
It's
like
trying
to
pull
it
through
there,
so
you
want
it
to
be
a
nice
volume.
It's
a
one-inch
hose
typically
that
we
use.
F
A
So
this
is
what
we
have
there.
So
the
engine
shaft
is
like
right.
There
yeah
and
one
half
one
sprocket
is
connected
to
the
engine.
The
other
sprocket
is
connected
to
the
pump,
and
then
you
put
a
those
two
sprockets.
You
just
wrap
a
chain
around
them,
and
then
you
have
a
little
bit
of
flexibility
there.
Just
like
what
we're
doing
on
a
live
track.
A
The
tractor
wheel
drive
we're
doing
a
double
chain
coupler,
so
we
have
a
lot
of
tolerance
in
terms
of
alignment,
so
anyone
can
build
this.
Otherwise,
you
gotta
be
very
precise,
like
when
you
mount
it.
It
has
to
be
exactly
at
right
angles,
otherwise
it
will
bind
up
and
wear
and
break
so
this
way
pretty
much
a
novice
welder.
A
Yeah,
that
is,
that
is
a
good
way.
One
danger
point
of
that:
spins
at
high
speed
so
make
sure
that
doesn't
fly
apart
or
put
a
guard
on
it
here.
It's
semi-guarded,
but
be
careful
around
that
because,
okay,
so
there's
the
cooler
fan
where
the
hydraulics
before
they
return
to
the
tank.
We
send
them
through
this
cooler,
not
on
the
high
pressure
side.
A
A
A
D
A
That
was
hydraulic,
fluid
yes,
okay,.
A
No,
no,
the
engine,
oil,
that's
your
place
that
that's
the
engine
oil
fill
and
you
just
replace
that
every
so
many
hours,
that's
the
oh
yeah
and
you
connect
the
negative.
You
can
connect
it
right
to
the
frame
because
it's
ground
because
the
engine
is
already
connected,
it's
laying
on
metal,
so
you
just
connect
the
ground
like
put
it
anywhere
on
the
frame.
So
you
got
the
wiring
that
you
know
you
gotta
look
at
the
wiring
diagrams
that
we
have.
A
A
Oh
yes,
so
for
the
the
control
panel
detail
of
the
that's
the
switch
on
the
control
panel,
we
have
the
switch
the
power
return
and
there's
that
third
one
there.
So
what
is
that
thing?
Let's
explain
just
this
one
when
you
go
left,
you
see
there's
three
hoses
so
so
the
third
one
is
called
the
case
drain.
So
this
small
one,
what
happens
is
some
small
motors?
No
various
motors
various
motors
have
a
small
lubricating
fluid
return,
that's
kind
of
like
the
way
it
does.
A
Its
internal
lubrication,
without
going
into
deals,
but
some
motors
have
three
three
outlets
too
big
for
power
and
return.
If
they're,
bi-directional
they're,
either
power
or
return
depending
on
which
direction
they
are,
they
have
a
third
one.
That's
just
a
just
a
small
trickle
of
fluid
that's
used
for
lubrication
internally.
A
A
The
next
yeah
the
motors
I'm
selecting
right
now,
the
ones
that
we
use
on
the
the
life
track.
Yeah.
They
have
three
connections.
They
do
so.
We
need
this.
It's
much
more
convenient
to
have
two,
so
that
I
mean
third,
one
is
just
more
plumbing
like
you,
try
to
keep
it
as
simple
as
possible.
Like
three
is
you
know
fifty
percent
more
than
two
and
complexity,
so
just
try
to
keep
it
simple.
Yeah
make
it
really
transparent
and
simple.
You
can
connect
your
hoses
quickly
and
these
don't
reverse
they're.
A
C
Outlet
so
a
different
solenoid
later
in
the
system
redirects
the
liquid
to
push
it
back.
A
F
Okay,
so
that
I
don't
think
I'm
quite
putting
that
so
on
the
power
key,
the
fluid
flow
is
always
going
to
be
in
one
direction,
even
if
the
flow
is
reversed
in
the
application
itself.
A
A
As
I
said
about
a
hundred
bucks
things,
you
look
for
how
many
gallons
per
minute,
that's
like
the
biggest
performance
factor,
3000
psi,
18
gallons
per
minute,
100
bucks
all
right!
Well,
what's
the
these?
Are
the
work
ports,
these
top
ones
so,
depending
on
which
way
you
press
the
lever
power
will
go
out
one
and
return
another
or
reversed.
A
A
So
while
you
have
one
directional
motion
through
it
from
the
inlet
outlet,
the
work
ports
can
reverse
through
the
lever,
yeah,
okay-
and
that
applies
to
whether
this
is
a
lever
valve
or
a
solenoid
valve.
So
northern
we've
gotten
stuff
from
northern
tool.
Once
again
here,
where
are
the
connections
these?
These
are
just
the
solenoids
and
they
have
they
always
have
a
base
plate
so
in
a
base
plate
you'll
have
a
similar
thing.
A
So
that's
a
bi-directional
thing
you
can
tell,
because
it's
got
those
four
holes
and
four
ports
you
can
get
like
ones
that
are
unidirectional,
which
is
basically
like
half
half
of
this,
which
would
still
have
in
and
out,
but
they
might
have
like
one.
Perhaps
one
one
outlet:
okay,.
A
C
A
It
looks
neater,
but
it's
too
much
work
because
you
got
to
make
sure
all
that
is
fluid
tight,
like
when
you're
welding.
So
you
got
to
be
really
good
at
welding,
yeah.
F
So
you're
there's
no
battery
charging
on
here.
The
battery
is
used
for
the
fan
and
the
controls
all
right.
So.
A
It
has
to
be
charging
yeah,
so
the
engine
typically
charges
it.
Typically,
these
engines
would
have
charging
like
10
amps
charging,
so
you
can
run
the
fan
and
then
crank
it
yeah.
They
do
because,
typically,
I
could
use
these
are
like
lawnmower
engines.
Typically
lawn
mowers
would
have
things
like
fans
and
lights,
so
they
got
to
charge
yeah,
except
for,
like
the
small
one
that
we
have
right
now.
The
18
horsepower
on
the
micro
track.
A
The
charging
there
is
like
a
couple
of
amps,
so
it
wouldn't
be
enough
to
run
our
runner
fans.
So
that's
actually
a
problem
where
that
the
micro
track
actually
right
now
is
running
without
a
fan,
so
you
can
only
run
it
for
so
long
before
it
overheats
right
now,.
D
A
A
Yeah,
you
just
got
it:
it's
pretty
standard
yeah.
So
if
you
want
to
go,
we
get
all
this
stuff
at
so
surplus
center
like
if
you
get
into
the
practice
surplus
center
is
a
pretty
good
place.
Surplus
center
hydraulics.
This
place
is
about
three
hours
from
here,
but
you
know
you
go
to
shop
by
category
and
go
you
go
to
hydraulics.
A
A
You've
got
pumps,
pretty
standard
gear
pumps
very
simple:
it's
basically
gears
meshing
against
each
other,
and
that
gets
the
high
pressure.
So
we
typically
get
these
style.
You
can
select
it
by
what
kind
of
shaft
you
want.
What
kind
of
shaft
do
you
want.
A
A
But
why?
Because
you
just
put
it
on
no
keyways
keyways
are
a
pain.
Why
not
just
let
the
geometry
handle
it
because
the
geometry
handles
the
force.
You
don't
have
to
have
this
tight
key,
that
you
got
to
put
it
in
there
and
then
it
gets
all
tight.
The
tapered
ones
are
cool.
They
have
a
keyway
and
they're
like
hard
to
get
off
too
yeah
like
you've
done
it
the
spline.
You
just
take
them
right
out.
A
Yeah,
that's
that's
the
disadvantage.
You
got
to
find
a
sprocket,
that's
that
and
if
you
want
to
need
to
weld
it
to
some
like
present,
we
had
to
make
our
double
chain
couplers.
We
took
a
sprocket
and
welded
it
to
that
splined
sprocket,
but
that's
relatively
easy
because
you
have
some
tolerance
in
terms
of
the
angle.
So
it's
not
too
bad
because
you
got
the
double
chain.
Coupler
allows
you
it's
a
good.
A
A
A
A
On
the
inlet
you
got
suction,
so
you
don't
really
have
a
lot
of
pool
there.
So
you
want
a
large
diameter,
so
you
don't
have
a
lot
of
resistance
on
the
pressure
side,
the
smaller
the
hoses,
the
more
pressure
it
can
take
like
the
one-inch
hoses
yeah,
I
mean
they're.
They
have
to
be
much
thicker
because
they
got
all
that
surface
area
so
but
mostly
it's
for
the
suction.
The
suction
line
is
going
to
be
big
because
you
don't
want
to
collapse
on.
A
You
like
it
has
to
be
reinforced,
but
if
it
was
a
small
diameter,
you'd
be
sucking
on
it,
so
much
that
it
tends
to
collapse,
so
has
to
be
like.
Why
are
reinforced
and
larger,
so
it
doesn't
collapse
on.
You
has
good
suction.
Well,
so
you
have
little
reason
anyway.
The
big
big
part
is
suction,
always
on
these
pumps.
A
It's
pretty
affordable
the
size
we
use.
How
would
you
know
what
size
okay,
so
these
are
like
0.2
cubic
inch.
What
kind
of
size
do
we
want
on
this?
That's
this?
Is
this
is
now
getting
into
design?
How
do
you
know
like,
and
how
do
you
know
how
many
gallons
per
minute
do
you
want
like
how
many
gallons
per
minute
can
your
engine
do?
A
Well,
they
do
have.
They
do
have
actually
calculators
here.
We
actually
refer
to
that.
So
here
would
be
like
technical
help.
Let
me
get
some
technical
help
on
calculators.
Gear
pump
horsepower
gallon
per
minute.
Rpm
like
this,
you
start
with
a
pump,
so
you
want
to
say:
okay,
what
pump
do
I
want
so
you'd
go.
A
A
You
can
start
one
of
two
ways
you
can
go
if
you
want
a
desired
flow,
like
the
starting
point
is
like
about
one
to
one
like
one
horsepower
to
one
gallon
per
minute.
Like
start
without
it's
not
actually
that
so
but
say
we
want
10
like.
What's
what
are
these
quantities
like
gallons
per
minute?
I
know
that
like
we
want
we
have
so
I
can
tell
you.
We
have
like
10
gallons
per
minute
10
to
20
typical.
A
A
A
So
18.2
horsepower,
that's
what
we
get
10
gallons
per
minute.
So
how
do
you
know
what
pump's
gonna
get
you
10
gallons
per
minute.
A
So
that's
the
displacement,
how
much
it
pumps
every
revolution
yeah
and
I
think
they
tell
you
if
you
got
like
desired
flow
of
10
gallons
per
minute.
Operating
speed
is
3600
because
that's
okay,
what
are
the
these
engines?
They're?
Typically
like
3600,
rp
rpm
revolutions
per?
That's
like
a
standard
gasoline
engine
might
be
like
3
000
to
3600
electric
motors.
That's
a
typical
speed!
Why
is
3600?
A
A
A
And
you
look
for
one
here
will
be
displacement
range,
so
you
go
to
like
0.51
to
0.99
cubic
inch
per
revolution
and
you
got
these
pumps
these
various
pumps.
The
only
other
thing
you
got
to
consider
so
like
6.62,
we
we
wanted
yeah.
Well,
they
got
something
close
to
that
like
0.61
right
here,
so
you
take
one
of
these
so
which
one
am
I
going
to
click
on.
I
I'm
looking
for
the
spline,
so
these
two
have
splines
and
what's
the
there's
two
types
with
the
spline,
I
like
the
splines.
A
Yeah
one
is
the
one
that's
in
stock.
This
is
only
two
in
stock
and
they're,
going
to
be
there
clockwise
or
counterclockwise,
and
that's
determined
by
which
way
the
engine
spins
and
typically
like.
Typically,
I
think
engines
are
clockwise
and
pumps
are
counterclockwise,
because
if
engine
is
spinning
one
way
the
pump
is
going
to
be
spinning
the
other
way.
How
do
you
determine
that
direction?
Clockwise
is
when
you're
looking
at
the
shaft.
Is
it
spinning,
clockwise
or
counterclockwise,
but
these
the
two.
A
I
think
the
dash
c
will
be
counterclockwise
there
yeah,
it
says,
rotation,
ccw,
counterclockwise
cool.
We
get
this
one
and
then
you
look
at
okay.
What's
its
rated
speed?
Okay?
Well,
it
is
3600
rpm
max.
A
When
the
engine
is
loaded
down,
it
will
go
like
3000,
so
yeah.
I
think
that
will
work
it's
rated
max.
I
mean
you'd
you'd
want
one,
that's
maybe
like
rated
for
3600,
but
these
these
ones.
We
actually
do
use
and
I
think
they
seem
to
work
well.
They
don't
tend
to
break
so
we
do
use
these
and
they
work
well
well,
but
no,
this
one's
saying
it's
only
like
five
gallons
per
minute.
Rated
there's
like
some
discrepancy
here:
it's
not
good.
A
How
do
we
get
the
other
number
before
I
don't
know
the
calculator
is
not
well.
It
tells
you
right
there.
What
its
rated
flow
is.
So
you
kind
of
have
to
trust
that
it
tells
you
what
it
is
given
that
rpm
max.
So
what
it's
saying
is
actually
at
36
rpm
max
it
will
get
you
eight
point,
eight
four
gallons
per
minute,
which
is
close.
We
said
nine
gallons
per
minute.
We
were
looking
at
ten,
so
it's
like
ten
percent
off.
D
A
But
yeah
so
now
you
wanna
go
higher.
You
you
go
to
the
one
and
typically
from
experience
we
kind
of
get
these
ones
that
are
more
like
around
this
range.
The.
A
A
A
Yep,
so
there
you
go,
you
select
your
pumps,
you
select
your
motors,
I
mean
the
way
I
do.
It
is
okay,
I'm
gonna
start
okay,
I'm
getting
this
engine.
I
want
20
horsepower.
I
want
80
horsepower
what
I
look
at
is
you
got
two
practical
options:
18
and
27
horsepower
like
those
are
super
super
common,
the
lowest
cost
per
horsepower
and
on
a
wiki
I
record
this.
It's
like
motors
or
engines.
I've
looked
at
this
like
forever.
A
I
broke
it
down
for
gas
engines.
You
got
diesels.
These
are
more
expensive,
but
the
bottom
line
is
what's
the
least
cost
per
horsepower
when
you
start
looking
through
all
the
sourcing
out
there
outside
of
now
making
your
own
in
the
future
near
future,
the
ones
that
are
like
19
are
the
like.
18
19
are
super
low
cost
like
20
per
horsepower,
whereas
if
you
go
up
to
the
27
you're,
almost
double
that
you're,
like
36
per
horsepower,
so
well,
what
do
you
want
to
do?
You
want
to
multiply
a
few
smaller
units?
A
It
does
make
sense
for
cost
wise.
It
means
you
got
more
units,
but
if
you
do
the
mother
power
cube
and
have
just
the
engine
pump
combinations,
that's
that's
pretty
effective,
so
you
kind
of
have
to
decide
what
do
you
want?
You
want
like
one
engine
at
27,
because
I
don't
want
to
mess
with
two
of
them.
A
We
can
have
like
whatever
50
50,
60
gallons
per
minute,
all
together,
and
then
you
have
to
decide
like
if
you
look
at
look
at
the
the
actual
valves,
they're,
typically
in
a
10,
to
20
as
details,
but
you
can
set
up
your
drive
to
make
sure
that
the
valves
you
have
match
the
gallons
per
minute
of
what
you
which
you've
got
going
through
them
like
you'll
go
to
so
we
talked
a
little
bit
about
here's,
your
hydraulic
pumps
say
like
10
or
20
gallons
per
minute.
A
A
those
two
sizes,
but
you
take
one
of
these
yeah
they're
like
346,
about
170
per
channel,
but
these
are
like
25
gallons
per
minute.
3000
psi
double
acting
cylinders
and
the
only
caveat
on
valves
is:
you
have
to
pay
attention
to
whether
you're
driving
a
cylinder
versus
motor.
Now.
What's
the
difference
motors
have
inertia
they
spin.
A
So
when
you
release
the
valve,
you
want
to
make
sure
the
valve
design
allows
the
free
spin
and
the
valve
that
does
allow
the
free
spin,
as
opposed
to
like
locking
it,
and
it
stops
dead
short
that
would
like
blow
things
up,
because
if
you've
got
heavy
enough
like
say
you're,
spinning
like
a
hammer
mill
fast,
you
got
all
that
weight
of
that
rotor.
If
you
try
to
dead,
stop
it,
that's
a
lot
of
pressure
spike
somewhere.
A
So
make
sure
that
when
you
hit
it
to
neutral,
the
neutral
is
free,
spinning
and
that's
what
motor
valves
are
the
cylinder
valve.
This
is
this.
One
says
cylinder
means
that
back
in
neutral
position
it
locks,
so
that
would
like
that
stop.
It
wouldn't
work
for
that
application
for
cylinders.
Since
the
cylinder
dead
stops,
that's
fine
without
much
inertia.
A
Typically,
you
might
have
some
if
you're
moving
like
a
cylinder
with
something
very,
very
heavy,
and
you
then
stop
it.
It
will
shake
you
around
a
bit
too.
So
you
might
want
to
have
like
pressure
relief
valves
in
that
system,
but
for
spinning
things
with
heavy
inertia
like
a
lot
of
inertia.
Yeah,
you
just
can't
use
these
things
they'll,
you
don't
want
to.
I
mean
you
could
do
that
this
valve
and
just
have
a
pressure
relief
valve
that
when
it
spins
the
pressure
relieves
and
it
just
like,
slows
it
down
pressure
relief.
F
A
Leave
your
pressure
reliefs
for
they
generate
a
lot
of
heat,
so
every
time
you'd
be
stopping
something
you'd
be
generating
a
lot
of
heat,
because
it's
basically
like
the
way
they
work
is
converting
like
whenever
something's,
restricting
something
it's
turning
that
fluid
flow
into
heat.
So
if
you
can
accept
that
heat,
that's
fine!
If
not,
if
you're
like
stopping
and
going
you're
trying
to
stop
and
go
with
a
cylinder
valve
on
a
motor
that
spins
fast,
it
would
build
up
a
lot
of
heat.
A
F
So
like
I'm
on
the
tractor,
for
instance,
so
going
from
moving
the
tractor
forward
to
going
into
reverse,
there's
no
real
time
delay
that
you
have
to
worry
about
anything
like
that.
You
can
just
it's.
Just
the
the
valve
has
to
be
able
to
handle
the
person.
The.
A
Valve
well
from
going
forward
to
backward
the
inertia
change
in
a
180
degree
change.
It's
huge!
It's
a
big
spike,
so
you
can't
do
that
without
going
through
a
pressure
relief
valve
because,
yes,
bobcats
go
like
you,
can
go
forward
and
immediately
backward,
but
there's
like
a
little
slow
down
and
then
you
go
back.
It's
not
like
it's
not
like
that.
It'll,
like
beat
you
around
quite
heavy
it'll,
be
very,
very
large
forces
on
a
on
the
components.
A
A
It's
got
two
in
and
out
you
got
in
and
out
to
it
whenever
you
reverse
direction,
depending
on
how
you
set
the
pressure
using
these
knobs
they'll,
just
bypass
that,
so
you
slowly
like
slow
down
and
then
go
back.
If
you
set
it
to
like
3000
psi,
it
will
be
like
pretty
jerky.
If
you
leave
it
at
like,
say:
1500
psi
it'll
be
like
it'll,
just
slow
down
gradually
and
then
go
backwards,
so
you
might
want
to
set
it
to
the
value
that
you
can.
Your
body
literally
can
stand
because
it's
heavy.
A
D
A
A
Google,
like
remote
control,
for
you,
know
remote
control
for
bobcat.
A
A
A
D
C
Yeah,
like
this
opens
up
a
whole
set
of
new
kids.
A
Yeah
so
like
life
track
one,
so
so
this
kind
of
a
thing
that's
for
your
wheels
life
track,
one
actually
like
kind
of
wiki.
If
you
look
at
that,
there's
there's
like
full
hydraulic
diagrams
for
like
wheel,
drive,
live
track
of
a
one.
A
If
you
look
at
this,
like
it
shows
a
lot,
what
I
kind
of
talked
talked
about
so
well,
I
just
so
in
life
track
one.
We
had
a
two
spool
valve
four
cylinders,
two
spool
valve
for
the
wheels
and
we
basically
ran
those
in
parallel
like
so.
The
one
side
is
you're,
just
setting
sending
the
fluid
to
each
wheel
just
entirely
just
dividing
the
fluid
and
send
them
to
each
wheel.
A
We
did
have
that
little
case
drain
thing.
I
told
you
about
you
had
to
have
another
third
hose
there
going
into
the
return.
You
have
to
go
all
the
way
back
to
the
tank,
because
there
is
no
low
pressure
hose
at
the
wheel.
There
both
could
be
either
high
or
lower.
So
you
got
to
have
a
separate.
That's
why
they're
pain,
because
if
you
don't
have
a
low
pressure
line,
you
have
to
take
that
line
all
the
way
back
to
the
tank
so
from
each
wheel.
A
A
A
In
this
case,
we
even
had
like
a
pto
shaft
motor
power
takeoff.
So
if
you're
going
to
do
an
agricultural
tractor,
agricultural
implements
have
six
splined
ptos,
so
pto
motor.
You
can
get
one
of
these
hydraulic
motors
like
these
and
you
can
connect
implements.
They
got
this
six
spline
shaft,
that's
what
agriculture
implements
are
driven
by
typically
and
for
us,
like
they
typically
so
there's
a
safety
issue
here
here.
You
would
have
this
shaft
that
connects
this
like
in
the
back
of
a
tractor
to
the
implement.
A
That's
where
track
like
farmers
get
killed,
getting
wrapped
up
in
those
shafts,
so
you'd
wanna,
I,
when
I
design
implements.
I
would
rather
have
the
motor
right
on
the
implement.
So
you
just
have
hydraulic,
hoses
and
eliminate
the
danger
of
somebody
getting
wrapped
up
in
there.
So
hydraulics
lend
themselves
to
that,
because
you
can
put
the
motor
right
on
the
device.
A
F
Yes
sounds
like
something
similar
to
a
power
cube
with
like
a
one
of
these
pto
motors
inside
of
you
know
a
box
with
interfacing
connectors
on.
It
would
be
useful
all
right
so
that
it's
it's
it's
a
unit
in
and
of
itself
like
they
have
a
bunch
of
agricultural
implements,
and
I
have
a
tractor
and
I
want
to
be
able
to
connect
them
safely.
I
might
have
a
cube
with
this
motor
inside
of
it
that
allows
me
to
safely
interface
to
the
tractor
into
the
implement.
A
F
D
F
A
F
E
Right
and
it's
and
it's.
A
Kind
of
like
even
simpler
than
it
sounds
because
all
you
could
do
is
take
this
motor.
You
know
you
add
your
10
or
20
foot
hoses.
You
know
10
foot
hoses
to
that,
and
you
have
that
as
a
unit
and
you
just
plug
into
the
power
cube.
That's
it
exactly
yeah
and
then
on
this.
You
want
to
have
probably
what
you're
referring
to
is
like
a
an
interface
plate
that
it
readily
mounts
onto
an
implement.
A
So
you
don't
have
to
like
mess
around
trying
to
screw
down
a
bunch
of
bolts,
yeah
yeah
and
that's
exactly
what
we
did.
We
put
a
a
metal
plate
with
larger
bolts
because
those
bolts
there
are
kind
of
small
and
not
that
accessible.
You
have
to
have
a
nice
tight
cover,
so
you
put
a
half
inch
plate
on
it.
Big
bolts
and
you
have
to
remove
two
bolts
to
to
you,
use
the
motor
on
another
implement
or
you
can
have
some
other
kind
of
a
quick
connector.
A
A
So
you
flip
the
lever
this
latch
dismounts
from
whatever
implement
you
got
and
that's
a
quick
way
to
change,
changing
an
implement
in
like
a
minute
here
they
talk
about
a
repair
video,
but
that's
what
we
have
on
a
live
track
right
now,
these
kinds
of
levers
that
you
push
them
up
or
down
to
release
and
implement
yeah.
That's
just
a
repair,
video.
A
Yeah,
anyway,
that's
useful
so
like
these
quick
connect
mechanisms,
the
weakness
of
it
is
that
actually
for
future
experiences
like
for
very
heavy
things.
The
way
it
works
is
this
one-inch
one-inch
pen
that
goes
down
into
like,
for
example,
a
bucket,
but
it's
got
just
this
like
the
tip
of
it
going
in.
D
D
A
It's
I
definitely
did
notice
like.
I
thought,
okay,
what,
if
I'm
like
doing
like
a
very
big
thing
like
the
big
trencher
or
something
some
implement?
That's
just
really
heavy.
I
mean
the
bobcat
quick
attach
doesn't
really
have
that
beyond,
like
like
a
couple
of
thousand
pounds,
it's
not
designed
for
like
heavier
duty
use
than
that,
like
even
the
buckets
well
yeah,
actually
yeah,
even
a
bucket.
If
you
try
to
really
work
hard
with
the
bucket
and
lift
it
with
all
the
force
of
the
life
track,
the
bucket
came
off
using
this.
A
It
may
have
something
to
do
with
the
way
I
had
the
quick
attach
set
up,
but
if
there's
any
flex
in
there
your
implement
is
going
to
like
come
off.
If
you
put
too
much
force
on
it
and.
E
A
That's
like
half
inch
steel
there,
it's
pretty
solid,
like
three-eighths,
inch,
steel,
it's
pretty
solid,
but
it's
just
not
designed
for
like
the
suit.
I
could
try
to
scale
up
to
like
much
heavier
very
heavy
implements
like
what,
like,
I
don't
know
like
a
big
back
hole
in
the
progressive
but
like
on
these
devices
like
the
bobcats.
You
can
only
lift
so
much
because
that
you
start
tip
forward.
So
that's
just
a
consideration.
A
If
you're,
if
you're
trying
to
like
maybe
do
like
a
front
mounted
combine
attachment,
I
mean
that
would
be
a
lot
of
weight.
So
now
you
can't
really
hold
it
on
that
you'll
tip
forwards
considerations,
but
yeah.
We
use
this
quick
connect.
We
could
I'm
just
saying
the
point
here
is
I
I
would
like
a
stronger,
quick
connect
than
bobcat
standard
for
the
kind
of
stuff
we
want
to
do.
A
D
A
What
would
you
guys
like
to
do?
What
do
we
want
to
do
out
there
in
practice?
Or
do
we
want
to
cover
more
topics
or
questions?
That's
basics
of
just
some
of
the
components.
There's
hoses
a
lot
of
stuff.
We
use
the
way
you
screw
things
together
is
just
fittings
which
are
national,
pipe
thread
fittings.
A
A
So
all
the
comp
like
you,
this
surplus
has
actually
a
good
study
of
okay.
Here's
all
the
things
well,
you're,
definitely
going
to
need
fittings
you're
going
to
need,
like
maybe
a
pressure
gauge
pump,
mounts
hydraulic,
hoses,
quick,
connectors
hydraulic.
They
got
hydraulic
tanks,
they
got
breather
caps
because
if
the
pressure,
the
the
volume
of
liquid
in
your
tank
changes,
you
got
to
let
air
in
and
out,
but
you
don't
want
dirt
to
get
inside
there.
So
it's
got
a
little
filter
in
it.
That's
that's
like
your
reservoir
accessories.
A
Yeah
yeah:
that's
what
we
do
for
doing
that
kind
of
stuff.
We
do
like
welding
flanges.
They
got
that
weld
in
tank
flanges.
So
you
got
these
things
that
have
you.
You
torch
out
a
hole,
and
it's
got
this
wider
lip
on
it.
So
you
put
it
in
the
hole
and
then
weld
around
that
lip.
You
know
I
do
find
the
surplus.
It's
like
this
is
applied
hydraulics,
just
looking
at
all
the
components
that
they
have
and
then
say:
oh
okay,
where
do
I
need
that
and
kind
of
knowing
about
it?
A
I
get
all
your
valves
got
hydraulic,
solenoid
valves
like
that's
the
ones
they
have
here.
They
could
come
in
as
simple
as
this
thing,
and
these
are
12
volt
5
gallon
per
minute
little
one
directional
solenoid,
for
how
many
psi
3500
psi.
Man
look
at
that.
It's
a
tiny
one
for
five
gallons
per
minute.
So,
while
it's
not
big
enough
for
what
we
want
to
do,
but
pretty
powerful
yeah,
it's
still
3500
psi.
So.
F
Then,
in
terms
of
like,
if
we
want
to
do
electronic
control
on
the
cv
or
something
like
that,
we
have,
we
have
to
do
like
a
step
up
like
a
5,
volt
dc
relay.
That,
then,
is
triggering
the
12
volt
solenoid
and
we
have
a
separate
12v
power
supply
and
because
we
want
something
that-
and
I
guess
you
could
do
that-
yeah
because
you
have
a.
A
A
Yep
so
ssr
say
40d
dc
or
no
solid
state
relay.
A
You
need
one
of
these
things
because
out
of
the
controller,
these
ones
dd
so
3
to
34
3
to
32
dc.
So
the
little
signal
that
comes
that
you
can
take
high
arduino
signal,
but
on
the
other
side
you
got
12
volt.
These
are
like
rated
between
five
and
what
five
and
sixty
fifty.
A
Up
to
twenty
five
amps
yeah,
so
the
solids
only
take
like
a
couple
of
amps,
two
or
three
four.
If
you've
got
multiple
solenoids
at
the
same
time,
you
know,
let's
say
three
times
two
of
them.
You
know
six
amps,
at
least
that's.
You
know,
that's
accessible
enough!
So
from
your
arduino.
You
know
you
can
take
any
pen
literally
any
pen.
A
A
You
don't
at
the
power
levels
here,
so
you
ask
yourself
cooling
like
how
much
current
do
I
have
well,
it's
only
like
two
or
three
amps
for
the
solenoid
valves.
That's
nothing
like
once
you
get
to
like
10
20
30.
You
guys
start
paying
attention,
but
at
the
low
level
like
solenoids,
they
don't
take
a
lot
of
power.
A
We're
cool
like
if
you
had
a
big
electric
motor
yeah.
I
mean
this
thing
here
is
up
to
25
amps
at
25
amps.
You
probably
like.
If
this
is
rated
25
like
with
whatever
this
stuff
is,
I
would
typically
look
at
okay.
If
it's
25,
I
would
look
at
a
heat
sink.
These
things
do
typically
like
when
you
look
at
the
pictures
on
amazon
like
they
come
a
lot
of
them
come
with
heat
sinks.
A
Like
you
see
here,
like
look
at
that
stuff,
I
mean
they
got
that
big
heatsink
on
the
bottom,
but
we're
not
running
them
anywhere
like
like
this
stuff,
we're
not
running
them
at
25
amps
we're
running
at
maybe
like
six
amps.
You
probably
don't
need
it.
You'll
you'll
touch
it
and
you'll
see
it
if
it
gets
hot,
but
no
it
doesn't.
A
A
A
The
ones
they're
like
this,
but
they're
different
they're
different
they're,
the
black
ones.
These
are,
I
recognize
these.
These
are
like
up
to
10
gallons
per
minute,
so
they
would
actually
work
like
these.
These
things
would
work,
but
actually
they're
a
little
more
expensive,
but
more
like
200.
A
A
A
B
Yeah,
I
think
it
would
be
a
good
idea
to
use
jupiter,
as
one
aspect
of
the
like
you've
talked
about
every
build
as
a
fork
and
how
git
is
only
like
one
small
aspect.
Well,
if
you
do
all
these
calculations,
I
think
it
would
be
good
to
use
python
and
jupiter
so
that
you
know
other
people
can
change
the
variables
at.
Like
your
input,
assumptions
to
you
know
to
visualize.
B
B
H
B
It's
a
little
overwhelming.
I
don't
know
how
to
how
to
remember
it
all
or.
C
A
A
Yeah
now,
what
do
you
wanna?
What
what's
for
the
afternoon
then.
B
A
What
we
can
do
is
I
mean:
we've
got
all
those
components
from
the
power
cube
we
took
apart.
Why
don't
we?
A
I
would
say
why
don't
we
mount
a
create
the
hydraulic
part?
Basically,
the
mother
cube
and
then
create
the
there's.
The
engine
pump
unit
I
mean
maybe
like
work
on.
We
can
take
one
of
the
frames
we
have,
which
is
which
already
have
been
welded
in
a
workshop.
We
can
take
that
and
mount
try
mounting
all
the
components
and
yeah.
I
think
one
of
the
rebar
frames
make
the
mother
cube
like
mount
the
tanks
on
it.
A
We
can
reuse
the
same
tanks
and
yeah
I
mean
get
hands
on
it's
actually
like
screwing
things
apart,
like
okay,
there's
on
the
engine
pump
unit,
you've
got
like
okay,
here's,
the
key
switch
and
stuff
like
that.
A
I
mean
all
the
stuff
that
we
talked
about,
but
now,
okay,
here's
the
reality
of
it
and
here's
the
hydraulic
fluid
and
the
engine,
oil
and
switching
and
connections
which
are
wrenching
and
breaking
apart.
Hoses
or
I
mean
we
can.
The
thing
we
can
do
readily
is
use
the
old
components
the
other
part
of
going
about
it
is
you
know,
trying
to
optimize
it?
Okay,
here's
here's
the
optimized
system,
but
for
a
learning
system
we
can
just
say.
A
A
It
just
won't
be
like
clean
and
optimized
looking
and
then
use
that
we
can
use
that
to
drive
the
existing
track
like
what
I
would
do
is
take
that
power
cube
connect
it
to
an
existing
tractor
like
have
wire
up
all
the
connections
and
possibly
the
solenoids,
and
all
that
we've
got
all
those
parts
and
raise
the
wheels
off
the
ground,
and
then
we
actually
use
that
to
control
the
wheels
back
and
forth,
or
we
can
wire
up
cylinders
to
be
controlled
back
and
forth.
F
B
F
A
The
testing
would
be
okay,
so
you
connect
it
to
some
device
and
without
you
know,
even
just
take
the
cylinder
and
you
just
yeah
move
it
back
and
forth,
or
you
know
little
exercises
like
okay,
here's
the
code
and
we
programmed
it
to
go
back
and
forth-
maybe
like
oh
yeah,
now
it
actually
triggers
by
hitting
the
high
pressure
on
the
solenoid
and
just
reverses
by
itself.
So
a
little
piece
of
code
that
says:
okay,
when
you
trigger
reverse
and
then
you've
got
the
cylinder
moving
back
and
forth.
You
know
that's
an
application
of
automation.
A
That's
that's
all
we
do
in
you
know
more
advanced
versions
that
say
in
the
cd
press.
If
you
can
understand,
okay,
here's
how
I
connect
all
the
components,
including
the
solenoids
and
here's.
I
how
I
feed
it
some
code,
there's
a
lot
of
stuff
there
quite
a
bit
there,
so
we
can
focus
on
I
mean
we
can
build
the
mechanical
stuff.
We
can
do
yeah,
I
mean
what
do
we
want
to
do
so?
The
mechanical
part.
Is
there
there's
the
controller
part?
A
We
have
parts
for
all
these
things,
so
I
mean
what
would
you
guys
suggest
doing
the
mechanical
power
cube
using
the
components
that
are
there?
We
can
do
that,
so
we
get
these
some
hands
on
see
how
far
we
get
on
that
mounting,
trying
to
mount
everything
together.
Yeah
like.
A
Taking
those
components
you
know
tightening
up
the
connections
but
putting
in
a
actually
in
a
cube
like,
if
maybe
we
do
like
here's
one
cube:
here's,
the
mother,
here's
the
hydraulics
and
we've
got
the
milestone
of
okay.
We've
just
done
this
mother
cube
to
which
we
can
connect
a
bunch
of
these
babies,
meaning
the
engine
pump
units
try
to
get
there.
C
A
Think
that's
a
good
idea
because
then
it's
scalable,
like
you,
can
have
once
you.
You
know
how
to
build
one
of
these
engine
pump
units.
You
can
replicate
it
pretty
easy.
The
idea
there
is
just
engine
just
just
pump
and
then
the
two
hoses
that
go
in
into
the
pump
simple
it's
for
scalability,
like
maintenance,
because
all
the
hydraulics
and
the
fan
and
all
that
it's
all
a
bunch
of
infrastructure.
The
tough
thing
about
the
power
cubes
is
that
you
got
so
many
things
in
one
thing.
A
So
when
you
actually
try
to
work
on
it
like
things
are
in
a
way.
That's
why
separating?
It
is
a
good
idea
like
if
you
really
want
to
get
applied
with
this
and
scalable
with
it.
You
make
the
one
one
mother
and
then
the
babies
which,
if
they
break,
which
is
what
I
mean
the
engine
and
engine,
is
the
thing
that's
going
to
go
out
on
you
sooner
than
anything
else.
I
mean
the
life
lifetime
of
hydraulics.
Otherwise
I
mean
it's
pretty
long.
F
We
want
thanks
batteries,
controller
and
cooling,
basically
on
one
cube,
and
then
we
want
another
key.
That's
just
engine
coupled
to
the
pump.
A
A
Yeah
because
the
engine's
got
its
own
starter,
but
the
battery
might
as
well
be
on
the
mother,
because
you
just
need
one
battery
to
start
all
of
them.
You
don't
need
a
battery
for
each
so
that
saves
you,
the
infrastructure,
you're,
sharing
all
that
common
infrastructure
in
one
you
can
make.
As
many
of
these
modular
units
yeah,
I
mean,
let's,
let's
try
to
try
and
get
it
as
far
as
we
can.
A
You
would
yeah,
if
you
don't,
want
it
to
run
out
yeah
yeah
yeah,
so
you
have
to
connect
yeah
the
the
wires
that
are
connecting
yeah
there's
going
to
be
another
charging
wire.
That
has
to
go
back.
F
D
F
The
valves,
what
was
the
question
that
I
had
there
was
a
terminology
for
the
valves
that
I
don't
think
that
I
quite
got,
and
I
know
the
principle
is
that
you
know
we
have
our
input
and
output
hydraulics
and
then
the
sort
of
with
the
bi-directional
valves
have
different
outputs
for
whatever
device
you're
trying
to
move
like
what
the
heck
is
the
valve.
What
kind
of
valve
is
that
there
was
a
term
that
we
used.
It
was
a.
F
A
It's
because
valves
could
be
single
acting
so
when
you
go
to
surplus
center,
you're
gonna,
see
like
single,
acting
double
acting
single
acting
is
where
you
can
only
push
it
in
one
direction
and
does
one
direction,
and
then
you
have
a
plumbing,
that's
related
to
how
each
one
of
them
each
one
of
them
work.
We
never
use
like
single
acting
because
you
always
like
if
you
move
something
one
way
you
kind
of
want
it
to
come
back
or.
E
A
Yeah
load,
I
mean
load
like
actuator
actuator,
like
the
hydraulic
cylinders
are
known
as
actuators
and
then
motors
are
motors.
C
But
yeah
so
the
bi-directional
valve
it
takes.
It
has
one
input
with
pressurized,
drive
to
it,
and
then
it
can
switch
to
either
go
through
that
port
or
that
part
whatever
yeah
yeah.
It's
not
like.
G
C
A
It
can
send
it
one
way
or
the
other,
but
then
the
exit
will
go
back
to
tank.
So
if
you're
using
force
upon,
say
a
motor
yeah,
it
will
spin
the
motor,
but
after
that,
because
of
continuity
of
fluid
you're,
always
putting
fluid
into
the
motor
it's
going
through
it,
it's
driving
it,
but
then
it's
going
then
back
down
stream
to
tank.
So
it's
continuity
of
fluid
is
the
big
principle
here
that
it's
a
very
simple
concept,
but
when
you
end
up
applying
it,
it's
like
where's
the
return
line.
A
F
A
Like
a
constriction
constricting
needle
valve,
that's
a
resistor
inductor
would
be
a.
A
F
You
know
aspect
that
I'm
still
working
on
I'll
be
a
better
collaborator
when
I'm
better
at
putting
things
into
words
that
other
people
understand.
A
F
A
A
A
How
well
the
concept
that
you're,
reducing
the
the
number
of
words
into
the
simplest
possible
like
a
reduced
set,
that's
simpler
to
understand,
but
it's
maybe
like
not
as
accurate,
but
it's
simpler
to
understand
it's
cool.
When
I
saw
that
caterpillar
reduced
the
technical
english,
I
was
like
holy
cow,
that's
interesting!
A
Because
definitely
we
know
that
explaining
technical
things
is
difficult
and
then,
if
you
try
to
do
a
reduced
set,
I
thought
wow,
that's
really
cool,
because
that's
exactly
what
we're
trying
to
do
with
the
open
source
technology
pattern,
language
we're
just
saying:
okay,
here's
like
the
main
building
blocks,
and
now
you
can
create
anything
out
of
them.
Like
say
the
500
modules
that
I
talk
about.
That's
really
the
osc
technical,
natural
reduced
language.
F
B
Then
you're
imperative
commands
or
whatever
are
very
clear
and
there's.
No.
I
there
needs
to
be
no
ambiguity
if
you
have
some
sort
of
like
bring
the
computer
in
your
face
or
your
just.
D
F
You
know
it's
even
crazier,
which
you
might
never
come
across.
If
so,
you
know
african-american
vernacular.
English
has
many
different
regional
dialects
and
in
philadelphia
there
is
a
pronoun
that
we
use
a
john
and
it's
the
spell
j-a-w-n,
and
this
is
a
universal
pronoun
that
can
be
used
to
describe
any
person
plays
a
thing.
This
is
actually.
C
D
F
We
know
that,
but
in
and
in
other
places
like
if
you
go
down
to
baltimore
dc
up
to
new
york,
people
will
say
and
join.
You
know
they'll.
E
F
D
F
So
don't
use;
instead,
they.
B
Know
the
universe.
Alternatively,
you
need
to
develop
like
like
between
an
instructional
manual.
You
need
to
develop
a
context
relationship
where
you
can
say
john
and
they'll
be.
F
C
A
A
C
A
Do
that,
because
all
those
every
single
bolt
has
a
spec
like
say,
you're
actually
manufacturing
it
for
quality
control,
it
will
have
a
number
okay,
do
it
to
x,
so
that
you
know
it's
not
going
to
come
off
because
you
can
over
tighten
and
you
can
actually
damage
the
threads
you
can
under
tighten
it.
It's
going
to
get
loose
yeah.
D
A
C
B
Fine,
I
don't
know
I'll
be
I'll
be
by
this
one.