►
From YouTube: Tractor Construction Set 2017 - Part 3
Description
See working document - https://docs.google.com/presentation/d/1Z-2VYWrU81I-UCBf6LDozBPgOk51oDZlL2Bb34DrcbU/edit
And http://opensourceecology.org/wiki/Tractor_Construction_Set_2017
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A
All
right,
everybody,
here's
a
tractor,
Construction
Set,
part
number
three,
and
let
me
see
myself
and
jitsi
meet
here
with
my
camera
tractor
Construction,
Set
three!
So
let's
go
over
now,
so
we're
going
through
a
series
of
videos
on
how
to
design
a
tractor
from
scratch.
This
is
based
on
all
the
learnings,
perhaps
or
the
last
near
decade
of
work
about
eight
prototypes
that
we've
done
here:
factory
farms
so
to
review
so
tractor
construction
set
session.
Three
in
the
last
two
sessions
we've
gone
through
the
conceptual
design
of
the
tractor
construction
set
for
reference.
A
A
So
please
review
those
two
former.
If
you
miss
them
so
in
part,
one,
we
covered
the
conceptual
design
for
the
tractor.
Construction
set
a
highly
modular
system
of
design
with
interchangeable
parts,
modular
frames,
modular,
wheel,
units
modular
power
units,
everything
in
it
being
modular
to
allow
for
rapid
building,
so
Achmed,
hey
so
I'm,
just
starting
with
reviewing
the
last
two
weeks
of
design
and
I'm
recording
this
for
everybody.
So
overall
conceptual
design
of
the
tractor
construction
set
in
part
one.
A
We
covered
the
universal
width
wheel
units
which
are
modules
that
can
serve
many
functions,
including
the
use
for
tracks,
as
well
as
round
rubber
wheels
or
steel
wheels
or
whatever
drive
system
you
like.
Then,
we
covered
the
geometry
options
for
a
scalable
tractor.
What
kind
of
considerations
there
are
for
the
tractor
to
be
able
to
fit
on
a
road
to
be
able
to
turn
to
have
the
size
to
fit
everything
that
it
needs
to
to
increase
traction
or
to
be
a
very
small
tractor?
Okay.
So,
in
the
part
two
we
started
on
them.
A
A
A
Well,
the
small
tractor
will
teach
you
and
will
be
designed
as
such,
that
the
enhancement
to
larger
size
or
more
power
or
anything
else
are
feasible
right
away,
but
for
the
minimum
size
tractor,
we're
working
on
the
size
scale
of
16
horsepower
for
the
base
engine
units,
we're
also
working
on
a
power
cube
in
the
meantime.
So
there's
another
on
the
dead
log
developer
log,
which
is
a
page
our
standard
page
for
anyone
else
who
hasn't
seen
that
development
team
log
is
where
we
record
all
our
meetings.
A
The
last
meetings,
the
last
design
sprint,
one
of
the
last
design
sprints,
was
on
the
power
cube.
So
we're
going
well
on
that
and
the
power
cube
is
will
be
built
in
less
than
two
weeks
here
for
the
next
iteration
of
a
more
simplified
one
that,
as
we
go
forward,
we're
trying
to
really
simplify
I
mean
the
learnings
from
the
2015
builds
of
the
tractor.
Were
that
yes,
the
modularity
works.
Also,
we
learned
some
details
of
how
to
make
things
I
mean
every
time
we
build
it.
A
We
learn
how
to
do
things
easier
and
easier,
so
we're
taking
that
forward
to
make
really
rapid
interchangeable
kind
of
a
design
system
as
part
of
this
work.
So
today,
let's
go
over
the
consider
considerations
for
the
minimum
size
tractor
and,
as
I
said,
that
the
idea
is
that,
if
you're
concerned
about
okay,
so
first
of
all,
let
me
share
my
screen
since
you
guys
are
not
not
seeing
that.
A
And
once
again,
the
main
working
back
for
today
is
just
this
simple
one
right
here,
which
I'm
pasting
into
the
chat
box
and
I'll
include
that
in
the
link
and
once
the
video
is
posted.
So
that's
the
working
dock
we'll
be
referring
to
the
former
working
dock,
which
is
the
second
former
dock
right
there
and
the
overall
tractor
Construction
Set
2017
page,
is
where
we're
keeping
track
of
all
the
tractor
Construction
Set
meetings.
A
For
visual
reference,
but
the
platform
refers
to
that
flat
frame
that
carries
the
tracks:
okay,
so
a
flat
frame.
Let's
talk
about
that!
Why
it's
the
most
simple
thing!
Now,
typically,
we
do.
The
cubic
space
frames
right.
Well,
the
cubic
space
frame
would
make
it
a
little
more
difficult
for
you
to
mount
the
power
cube
on
top
there.
So
this
flat
frame
allows
several
things:
it
allows
your
wheel
mounting.
You
can
put
flat
plates
on
the
side
to
mount
wheel
units.
A
It
allows
the
mount
mounting
of
a
tensioner
system
which
I'll
discuss
it,
allows
the
power
cube
to
go
simply
on
top
of
this
platform
and
it
can
be
enlarged.
So
like
for
example,
last
year
we
did
a
platform
like
just
like
this,
which
was
which
made
an
eighth
foot
wide
tractor.
So,
like
a
two
point,
five
meter
wide
tractor
using
this
once
again
the
same
flat
frame
because
then
you
can
put
say
the
cab
or
a
power
cube
on
top
of
that.
A
Now,
in
an
absolute
minimum
version,
we
can
have
a
very
small
tractor
like
this,
that
just
carries
the
tracks
of
power
cube
and
a
person
can
walk
behind
to
it
and
walk
behind
configuration.
It
would
be
the
flat
the
the
minimum
point
of
reference
would
be
like
the
Toro
dingo,
so
Google
that
that's
a
small-scale
utility
tractor
on
a
scale
of
18
horsepower
and
I'm
going
to
let
you
I'm
changing
that
the
edit
permissions
here,
so
you
can
edit
this
as
well.
You
want
to
paste
a
picture
of
the
tour
Odinga.
Please
do
so
well.
A
A
A
So
so
it's
one
way
to
do
it
and
I'm
just
going
to
show
that
which
we
have
experience
with
and
which
works
and
using
the
modular
box
beam
tubing.
That
is
the
key
to
modularity
and
that
allows
it
has
both
holes
already.
So
we
can
mount
everything
to
that,
so
it
allows
for
design
for
disassembly,
so
the
base
design
was
these
three
basically
three
beams
and
then
you've
got
and
they're
really
separated
by
four
inches,
because
these
are
four
inch
beams
and
it
looks
like
this
so
now.
The
next
question
is
based
on
this.
Okay.
A
A
But
here
the
question
we
can
put
a
question
mark
for
what
exactly
is
the
right
width
based
on
the
fact
that
we're
going
to
attach
to
to
track
two
basic
two
idlers
and
tracks
onto
this,
like,
like
we
talked
about
before
so
now,
in
this
case,
so
flat
platform
plus
of
the
rotor?
So
let's
talk
about
the
rotor,
so
the
rotor
is
going
to
be
mounted
somehow
here
and
I
would
suggest,
for
the
rotor
mounting
would
be
mounted
something
like
like
this
here.
A
So
let's
color
that
in
so
that
would
be
a
plate
upon
which
the
rotor
can
mount
okay,
so
the
rotor
would
be
the
the
hydraulic
motor
and
the
shaft
would
be
would
be
here,
let's
say,
and
then
you
can
put
one
on
the
opposite
side.
Naturally,
for
for
two-sided
Drive.
That
means
you
can
turn
so
this
allows
you
turning
there,
you
go.
You've
got
a
base,
minimum
tractor
drive
system
and
these
two
fit
together
on
the
same.
In
other
words,
the
tracks
will
not
be
like
before
we
had
the
staggered
tracks
here
now.
A
The
track
Drive
will
be
on
the
same
side.
So
so
you
get
the
motor
on
a
mounting
plate.
Now
the
mounting
plate
would
actually
be
bolted
to
the
outside
of
the
frame
through
the
first
two
holes.
Now
you
can't
put
one
thing:
I
mean
you
can't
put
this
plate
right
here.
Unless
you
made
up
you
can,
if
you
did
you
see
what
I'm
saying
here,
there's
a
tube
here
that
has
the
hollow
part
right
here,
so
you
can
mount
the
plate
to
that.
A
But
you
could
do
this
if
you
made
this
this
last
beam
here
go
in
between,
like
basically
two
small
beams
right
here
and
therefore
you
still
have
the
holes
available
for
the
motor
going
all
the
way
to
the
edge
here.
We
can't
use
this
space
because
there
there
is
no
mounting
bolt
holes,
but,
as
you
see
here,
we
have
this.
We
have
the
mount
plate
all
the
way
to
the
edge,
because
this
beam
spans
to
the
end
here
and
the
way
I
drew
it
here
is
a
little
different.
A
But
probably
the
configuration
like
you
see
in
the
last
time
where
you
have
this
spanning
beam
here
in
between
the
two,
so
you
actually
do
have
boat
Falls
available.
All
the
way
to
the
end
is
a
good
idea,
because
otherwise
we've
got
this
empty
space
here,
that's
not
being
used.
So
probably
the
better
idea
would
be
just
like
this,
like
that.
So
these
are
some
of
the
details,
just
some
very
basics
of
design
here.
So
it
would
be
like
that,
where
you're
actually
stretching
these
members
across
and
the
the
end
beams.
A
Call
this
the
end
end
beam
they're
actually
spanning
between
the
two
long
beams,
so
that
actually
now
we
can
move
the
motor
all
the
way
here,
which
is
good.
But
if
we
do
that,
how
do
we
do
the
tensioning?
So
we
discuss
the
tensioning
mechanism
last
week?
Okay,
so
let
me
actually
move
this
back,
because
I
want
to
add
a
tensioning
mechanism
here,
so
moving
right
along,
so
we've
got
the
the
universal
rotor
mounted
and
it's
not
this
Universal
rotor.
It's
just
like,
like
I
discussed
before.
A
So
just
note
that
these
universal
mode-
these
are
basically
the
hydraulic
motors
mounted
to
a
plate.
They
don't
have
the
hole
mounting
assembly,
we're
going
simpler,
that
plate
mounts
to
the
beam
and
the
motor
bolts
through
it's
for
bug,
hole
pattern
to
that
plate.
Okay,
now,
let's
talk
about
so,
let's
talk
about
the
next
piece
added
to
this
puzzle,
which
is
tensioning
so
we're
going
to
have
tracks
here
so
in
order
to
before
the
tensioning
is
tracks
and
before
the
tracks
is
idlers,
so
idlers,
plus
tracks,
plus
tensioning.
A
A
So
that's
your
I
mentioned
in
one
of
the
last
meetings.
We
generated
that
in
openscad
you
there's
parametric
design
of
sprockets
and
openscad,
if
you
ever
get
into
that,
but
we've
got
a
sprocket
that
we've
used
before.
We
could
use
that
same
one
because
it
works
now.
So
we've
got
the
sprockets
and
shafts
okay
idlers.
So
here's
the
idlers,
basically
the
three
spinning
so
the
idler
is
this
part.
It's
the
free,
spinning,
spinning,
basically
a
track
a
guide
for
the
track
to
roll
in.
A
It
consists
of
this,
this
cylindrical
structure
with
lips,
so
the
track
doesn't
fall
off
it
and
it
consists
of
two
bearings
and
shaft
collar
and
the
shaft
goes
through
that
the
way
we
did
our
shaft.
So
let's
talk
about
the
shaft,
so
before
we
have
idlers,
we
have
a
shaft
upon
which
the
idlers
sits
and
the
shaft
is
not
shown
here.
The
mounting
plates
are
shown,
but
that
hole
is
where
the
shaft
goes
through
the
idlers.
Now,
the
way
we
did
the
idlers
before
was
with
a
shaft.
A
A
So
the
shaft
spams
under
the
frame-
and
you
notice
here
it's
on
its
through
shaft-
it's
not
just
one
piece
here
and
another
two-piece
on
the
other
side,
it
goes
through
spans
under
the
entire
frame.
Now,
why
do
you
want
to
do
that?
That
makes
for
a
stable
design
where
it's
firmly
attached
and
these
Mount
sharp
plates
would
be
these
ones
here.
A
To
detail
that
these
things,
these
are
the
shaft
mounting
plates.
Those
two
holes
go
go
into
the
these
go
into
the
frame,
and
this
is
the
shaft
hole.
So
that's
the
mounting
plate
so
I'm
going
to
draw
that
little,
just
a
representation
of
that.
So
basically
the
there's
the
plate
that
mounts
the
shaft.
So
that's
underneath
there,
let's
put
another
one
on
the
other
side,
that's
underneath
there
and
then
there's
once.
A
A
I
mean
zoom
in
on
that,
but
idler
looks
somewhat
like
this.
It's
basically
a
cylinder
structure
between
these
two
things
and
these
plates
here
are
flared
out
a
little
bit
so
that
the
the
track
drives
on
this.
So
that's
how
that's
how
the
idler
looks
pretty
much.
That's
a
simplified
version
of
that
just
to
explain
how
it
all
looks.
So
that's
on
each
wheel.
A
A
So
move
that
under
there,
so
that's
that's
how
it
looks
now.
What's
this
so
we
talked
about
what
is
this
minimum
distance
that
we
should
have
that's
to
be
determined
and
the
geometry?
So,
let's
maybe
move
on
to
the
slide
duplicate
slide
next
next
slide,
so
then
platform
dimensions
so
frame
dimensions.
A
A
Let's,
let's
put
that
in
red
here
for
now
to
let's
go
to
that
next,
you
need
to
mount
and
then
you
also
need
the
power
cube
right.
The
power
cube
is
on
top.
So
somewhere
you
need
to
hold
the
power
cube
and
somewhere
if
we
have
any
of
a
functional,
Toro
dingo
like
structure.
So
look
at
this.
That's
the
Toro
dingo!
That's
what
we're
talking
about
so
we're
doing
the
open
source
Toro
dingo
here!
So
that's
what
the
Machine
looks
like
you
got
your
tracks.
A
You
got
your
base,
you
know
it's
all
nice
and
need
very
custom
parts.
We
are
blocky
and
square,
but
you
need
loader
arms
we're
going
to
have
to
have
some
loader
arms
there,
because
that's
what
you
attach
all
kinds
of
implements
to
here
would
they
have
a
grapple
for
lifting
things.
What
the
total
dingo
has
a
walking
platform
for
the
operator
on
the
back
with
with
all
the
controls,
so
that's
that's
kind
of
the
model
that
we're
thinking
and
it
has
rubber
tracks
we're
going
to
use
steel
tracks.
A
However,
we
are
getting
prepped
for
the
the
rubber
tracks,
we're
planning
on
a
2
by
2
foot
machine.
So
the
latest
on
the
tracks
is
a
2
by
2
foot
print
platform
which
would
allow
us
to
print
in
rubber.
So
you
can
print
rubber
we're
going
to
design
an
extruder
for
rubber.
It's
just
this
slightly
modified
version
of
the
regular
extruder
that
we
have
so
going
to
get
to
working
on
the
extruder
and
the
3d
printer
team,
but
getting
back
to
the
dimensional
considerations
that
that
distance
between
the
like
the
minimum
distance.
A
That
could
be
literally
touching
one
another
in
the
absolute
absolute
minimum
case
now
it
would
not
have
a
lot
of
stability,
so
there's
power,
cube,
loader
arms,
our
requirements,
there's
the
tensioner,
and
now
let's
go
to
stability
requirements.
The
stability
requirement
is
such
such
that
the
wheelbase
has
to
be
significant
enough
forward
and
back
such
that
when
you
lift
something
or
you
put
a
load
on
the
front,
the
tractor,
the
little
tractor
doesn't
just
tip
over,
so
it
has
to
have
stability
requirement.
A
Center
of
gravity,
basically,
the
requirement
is
the
tractor
cannot
tip
if
it
has
a
heavy
load
on
the
front,
primarily
because
the
operator
on
the
back
is
pretty
light.
Typically,
if
it
has
a
heavy
load
on
the
front,
what
is
the
size
of
that
heavy
load?
I
would
say
that
heavy
load.
We
should
design
the
minimum
version
here
for
500
pounds.
That's
that's
about
I
think
what
the
Toro
dingo
has,
but
we
should
be
thinking
about.
A
It's
not
I
mean
it's
not
enough
for
the
big
versions,
but
I'm
saying
this
is
the
minimum
viewable
product
right
so
requirements
for
a
minimum
version,
a
practical
version
for
and
I
mean
we
can.
Let's
start
that
as
a
minimum
requirement,
but
we
can
take
that
up
I'm
just
saying
we
cannot
go
lower
than
that,
because
I
mean
it'll
be
impractical,
but
you
could
think
about
it
as
if
we
can
easily
get
above
500.
A
A
A
A
For
which
reason,
the
platform
like
we
had
here,
we
actually
put
the
power
cube
over
the
top
of
these
tracks.
That
made
the
machine
like
almost
six
feet,
high,
really
not
acceptable
for
tipping
hazard.
So
we
want
to
try
to
keep
the
the
height
as
low
as
possible.
That
means
the
power
cube
has
to
reside
here
on
the
tracks,
which
may
mean
that
this
distance
here
is
probably
going
to
in
between
the
tracks
needs
to
be
that
distance.
A
A
We
might
look
at
other
configurations
like
what
I'm
showing
here
is
what
we've
shown
that
works
and
is
an
easy
to
do
configuration,
but
we
might
come
up
with
other
designs,
so
that
must
accept
the
power
cube
by
the
low
center
of
gravity.
So
then,
from
these
consideration,
we're
going
to
get
the
land,
the
width
and
this
this.
This
width
of
the
power
cube,
depends
on
our
results
from
the
power
cube
design
that
we're
doing
right
now,
like
the
frame.
So
we
have
to
consider
making
it
as
narrow
as
possible.
A
Perhaps
long
yeah
I
mean
narrow,
I
mean
that's
yeah
narrow.
The
limit
is
going
to
be
like
we
were
talking
about
a
27
24
inch
power
cube,
that's
if
we
can
get
into
24
inches.
We
would
be
pretty
good,
but
I
can
tell
you
right
now
that
let's
just
move
over
to
the
power
cube
for
a
second
control
T
here,
if
you
go
to
my
log
I'm,
going
to
just
show
you
something
from
my
log.
A
I
was
working
on
a
visual
bill
of
materials
for
the
power
cube
and
looking
at
some
of
the
basic
considerations
for
size,
and
it's
probably
going
to
have
to
be
more
than
24
inches
cube.
So
here,
I
have
power,
cube
a
17-point
Oh
8,
which
means
August
17
version.
Although
the
visual
BLM
document
here
on
that
page
shows
the
basics
of
dimensions
and
and
what
I
saw
is
that
the
engine
is
90
about
19
inches
on
its
minimum
side,
and
then
you
still
have
the
hydraulic
tank
and
you
still
have
the
fan
somewhere.
A
So
let
me
just
show
you
the
latest
on
the
dimension.
So
this
is
the
visual
bill
of
materials
for
the
power
cube
which
all
these
parts
are
ordered.
But
this
is
like
the
minimum
simplest
way.
We
can
do
it.
If
you
look
at
this,
like
from
the
top
view
right
here,
engine
with
pump
a
draw,
a
tank
looks
like
the
minimum.
A
We're
going
to
have
is
like
28
inches
by
24,
probably
based
on
this
engine,
mounting
engine
dimensions
being
here
to
emphasize
those
those
are
the
engine
dimensions
for
the
minimum
engine,
so
width
is
18
point
five
inches.
So
if
that's
eighteen
point
five
inches,
we
can
probably
fit
a
fan
on
the
side
if
this
is
looking
from
the
front,
but
the
length
is
probably
going
to
have
to
be
like
24
28
inches
and
we
can
probably
get
away
with
24.
A
But
if
we
do
24,
the
hydraulic
pump
will
be
sticking
out
the
power
cube
because
because
you
can't
I
mean
with
this
engine
being
like
the
depth,
let's
say
the
depth
with
a
shaft
is
say
like
20
or
it's
either
20
or
it's
19
about
about
20.
You
still
need
to
add
the
length
for
the
the
coupler
and
the
pump,
so
the
pump
might
be
sticking
out
the
frame
which
is
not
great.
We
should
have
it
all
enclosed
within
within
the
power
cube,
so
it
doesn't
get
damaged,
but
we'll
see
what
we
can
do.
A
It
would
be
acceptable
within
the
tractor
itself
like,
for
example,
if
we,
if
we're
doing
a
minimum
tractor
size
and
this
power
cube,
has
its
pump
sticking
out
just
a
little
bit.
I'll
be
like
all
right,
I
mean
not
too,
but
it's
not.
It
won't
be
sticking
out
beyond
the
actual
idlers
and
shafts.
So
we'll
have
to
see
how
that
works.
Okay.
So
that's
the
considerations
for
frame
dimensions.
Now,
let's
talk
about
the
tensioner.
A
A
Fixed,
so
let's
do
this
and
let
me
discuss
this
so
it
this
time
it
should
involve
fix,
fixed
idler
mounting,
and
let
me
explain
it
so
in
the
former
tractor
here
the
idler
mounting
on
the
front
here.
So
let
me
zoom
in
to
that.
So
you
see
the
front
the
front
part
there.
You
see
that
palin
gated
hole.
We
did.
The
tensioning
under
the
tractor,
like
tensioners,
were
down
there.
So
a
couple
of
issues
one
is
that
you're
pulling
on
a
shaft
which
is
I,
think
it's
easier
if
we
pull
on
the
actual
motor.
A
So
so
one
is
it's
kind
of
hard
to
access
and
you
have
to
make
these
down
gated
holes
instead
of
fixed
to
trapped
holes.
It's
a
little
I
think
it's
going
to
be
a
little
more
difficult
to
do
this
than
to
do
the
next
iteration.
Where
think
about
the
motors
here
that
you
have,
let's
just
move
the
motors
instead
of
moving
the
shafts
and
tracks
on
the
shafts.
A
A
Sometimes
it
could
be
inaccessible
like,
for
example,
we
have
the
loader
in
the
front
and
a
platform
in
the
back
or
your
you've
got
a
train
configuration
where
you
have
two
of
these
tractors
pulling
one
another
as
a
possible
scaling
configuration
you're
going
to
run
into
cases
where
the
tensioner
is
not
easily
accessible,
and
certainly,
if
the
tension
over
on
the
front-
and
you
have
the
loader
in
the
front-
that's
actually
very
dangerous.
Because
then
you
have
to
be
doing
the
tensioning
under
the
loader,
which
is
a
crushing
hazard.
A
So
for
the
reason
that
it's
I
think
primarily
that's
not
that
easily
accessible
and
harder
to
fabricate,
because
you
got
to
fabricate
well
if
your
CNC
cutting
the
elongated
holes,
that's
not
a
problem,
but
it's
actually
easier
and
more
accessible
when
you
have
the
tensioning
mechanism
on
top.
So
what
we
can
do
here
is
design
now,
our
so
I
mentioned
fixed
idler
mounting,
so
no
no
longer
an
elongated
hole
for
mounting
one
of
the
idlers
for
mounting
the
mounting
and
idler
pair,
so
fixed
I
dramatic.
A
A
So
I
haven't
drawn
this
mechanism
in
here,
but
what
I
could
foresee
is
that
the
way
that
the
motors
are
mounted
they
need
to
both
be
simply
pulled
by
some
kind
of
a
full
mechanism,
so
think
of
some
tensioning
bolts
or
something
that
pulls
on
both
of
the
motors
at
the
same
time
and
that's
what
tension
to
the
track
like
we
discussed
in
the
last
time.
Let
me
go
to
that
document
for
reference.
We
talked
about
how,
if
you
you
can,
let's
see
I'm
going
back
to
the.
B
B
A
A
A
A
A
I
still
can't
hear
you
well
man.
Can
you
like
open
up
us,
create
a
new
slide?
I
just
draw
the
simple
concept:
can
you
do
that
I
just
can't
sound,
it's
kind
of
bad
I,
don't
know
if
others
are
hearing,
but
it's
not
coming
out
on
this
side.
So
we
can
have
the
next
slide,
which
is
called
the
the
aqua
detention
er
all
right.
A
Yeah
no
AI
mean
there's
a
hundred
ways
to
do
this
and
we're
just
trying
to
see
like
based
on
the
experience
of
what
we
have
with
right
here.
That
would
be
easy.
You
know
try
to
go
for
the
easiest
way.
I
can
just
say
that
the
way
we
did
it
would
by
pulling
on
us
on
the
shaft,
wasn't
really
that
robust,
well,
I
think
the
biggest
part
about
it
was
that
it's
kind
of
hard
to
access,
because
if
you
have
the
driver
platform
down
there
or
the
loader
on
the
front,
it's
just
not
super
easy.
A
Typically,
the
tensioning
on
the
tracks
is
done
on
the
side
of
the
tracks,
but
that
means
you've
got
a
pretty
complicated
design
of
the
actual
whole
idler
assembly.
Here
our
idler
assembly
is
just
the
shaft
and
bearings
I
mean
it's
so
simple:
it's
like
you
cannot
I,
don't
think
you
can
do
a
simpler
idler
design,
especially
if
they're
fixed
it's
just
a
plate
mounting
plate
a
shaft
and
the
bearings
on
on
the
cylinders,
so
they're
very
simple
and
able
to
be
manufactured
with
stock
off
shelf
parts.
A
A
Is
how
do
you
move
the
motors
move,
both
motors
just
back
and
forth,
where
you
have
to
make
sure
that
once
you
move
them,
then
you
attach
them
firmly,
so
they
don't
move
once
once.
You've
got
got
them
to
the
right
position,
but
yeah
yeah
yeah
definitely
have
to
figure
out
or
the
of
the
other
options.
The
industry
standard
is
not
that
super
easy
I
mean
they've
got.
If
you
look
at
some
of
the
designs
like,
let's
see,
maybe
do
we
have
any
pictures
yeah?
A
If
you
go
to
some
of
the
former
former
discussions
on
the
on
the
drive,
sprockets
and
tracks,
comparing
industry
sounds
you
can
see
how
much
more
complex
to
the
other
mechanisms
are,
and
in
the
let's
see,
how
does
the
Toro
dingo
do
it
like?
If
you
look
at
what
they
do,
that's
it
that's
a
good
point
of
comparison,
but
look
what
they
have.
There
I
mean
look
at
it.
It's
this
custom
cut
shape.
They've
got
these.
This
would
be
the
drive.
Sprocket
they've
got
like
one
two.
A
Three
four
five
idler
wheels
they've
got
this
other
wheel
here.
So
we
are.
You
know
our
complexity
level
is
like
can
fold
simpler.
We
just
have
two
idlers
one
in
the
front,
one
in
the
back
forget
about
the
ones
in
the
middle
and
that
works
I
mean
it
works.
If
you
have
the
idlers
spaced
not
too
far
from
each
other,
but
that
works
I
mean
we've
planted
them.
You
know
ten
acres
of
hazelnuts
with
this
design.
A
So
this
this
thing
I
mean
it's
not
it's
not
a
conceptual
design,
something
we've
used
in
the
field
last
year
for
a
few
months
of
traction,
so
that
was
good
and,
for
example,
like
using
the
same
tracks
there.
For
example,
when
our
van
gets
stuck
in
a
ditch,
the
white
van,
which
is
8,000
pounds
that
you
know
we
were
driving
the
van
on
the
field,
watering,
the
hazelnuts.
It
went
into
a
gully
and
got
stuck,
and
then
we
pulled
it
with
us,
the
tractor
and
it
just
pulled
it
like
it
wasn't.
A
Even
there
like,
there
was
nothing
there.
It
just
had
8,000
pounds
of
the
traction
on
that.
The
tractor
was
about
8,000
pounds
and
just
pulled
the
thing
right
out
of
the
ditch.
So
it's
it
works.
We
know
it
works
and
here
they're
actually
very
elegant
the
the
five
of
those
idlers
at
the
bottom.
That's
a
standard
track
design,
like
typically
your
big
bulldozers
all
have
that,
because
the
bulldozer
track
is
pretty
long
in
our
configuration
here,
the
you
know
we
can
get
away
with
fewer
of
those
those
idlers
and
it
still
works.
A
Well
now
the
tent
they're
tensioning
mechanism
looks
like
whatever
it
looks
like
that
hole
there.
That
probably
is
some
kind
of
attention
to
mechanism
there.
I
I
can't
really
tell
it
might
be.
You
turn
one
of
these
screws
or
something
I'm
not
familiar
with
it
enough,
but
somehow
these
these
idlers
have
to
come
closer
to
one
another.
Something
has
to
shrink
up
so
that
you
can
then
put
on
the
tracks
and
then
tension
them
back
up.
But
you
see
I
mean
this.
Isn't
you
know
with
CNC
cutting?
A
We
can
do
this,
but
they
have
the
bend
there
and
so
forth.
It's
you
know
much
more
complex
geometry
than
what
we're
talking
about
with
like
plates
and
shafts
and
and
cylinders
and
stuff
and
and
for
the
loader.
We
definitely
want
to
do
a
complicated
design
that
that's
optimized
for
geometry,
because
the
loader
yeah-
that's
that's
pretty
serious
work.
You
can't
do
like
your
square
loader
shape.
It
would
be
really
awkward
there.
A
A
So
that's
what
happens
there
so,
instead
of
moving
the
idlers
you're
moving
the
motors
to
tension,
the
tension,
the
deal
just
like
you
see
in
this
picture
here,
where
you
got
the
drive
motor
there
you're
moving
it
backwards
and
that's
how
you
tension
it
now.
That
means
you
have
to
if
you're
pulling
it
from
the
in
this
picture,
if
you're
pulling
it
from
the
right
hand
side
here.
That
means
the
frame
and
the
mounting
point
for
the
tensioner.
A
The
frame
means
frame
must
be
extending
more
over
here,
so
you
have
to
peer
here
here
or
you
can
be
possibly
pushing
it
with
a
pusher
tensioner
from
this
side,
so
yeah
I
mean
we
have
to
figure
that
out
and
get
detailed
on
that
and
I
think
perhaps
that
might
be.
You
know
to
complete
the
drive
system.
Perhaps
that
is
the
challenge
here,
because
our
current
state
of
art
here
is
we.
You
know
we
can
claim
that
we've
mastered
the
idlers,
the
just
idlers
themselves,
the
shaft
the
drive
motors,
the
sprockets.
It
all
works.
A
The
chain
turns
in
this
huge
traction
to
pull
very
heavy
objects
out
of
ditches
and
without
slipping
or
anything
I
mean
whatever
the
weather.
It's
I
mean
this
goes
in
mud
or
in
on
solid
ground,
so
the
tensioning
is
I.
Think
the
tensioning
detail.
While
while
the
tension
will
work,
tensioner
worked
last
year,
some
of
the
issues
with
it
were
that
it
would
get
loose
after
sometime
after
the
after
the
tracks
may
be
stretched
a
little
bit.
A
It
would
get
a
little
bit
loose,
it
had
no
spring
mechanism
and
it
was
not
spring-loaded,
so
you
can
say
it's
like
a
spife,
tensioner
I
think
the
I've
seen
Springs
on
attention
mechanisms
of
other
devices.
If
you
look
at
the
Toro,
dingo
I,
don't
know,
there's
any
sprung
mechanism.
There
might
be
some
spring
action
and
part
down
there.
I
don't
know,
but
somehow
we
got
to
work
it
out.
So
that's
kind
of
the
main
concern
so
from
there
at
this
point
after
this,
let's
talk
a
little
bit
about
them.
So
that's
the
tensioner
part.
A
Now
our
power
cube
the
way
we're
designing
it.
It's
a
quarter,
inch
steel,
so
I
wouldn't
call
that
sufficient
or
just
like
quarter
we're
not
using
the
tubing
in
this
power
cube
right
so
that
to
being
would
work
well
enough
to
attach
a
loader
arm
to
here.
We
don't
have
that,
so
we
can.
We
need
to
put
other
well
down
some
other
attachments
or
some
plates
to
hang
the
loader
arms.
So
how
do
we
do
that?
A
So
say:
you're
looking
at
the
frame
from
the
side,
so
the
frame
from
the
side
looks
just
like
that.
That's
the
frame,
it
just
looks
like
one
beam
if
you're
looking
at
orthographically
from
the
side
of
the
tractor,
in
other
words
the
if
the
idlers
are
here,
that's
going
to
be
whatever
your
location
of
the
idlers
that
have
the
tracks
on
them,
and
that
would
be
this
would
be
your
drive
sprocket
here,
let's
say
so.
A
There,
what
do
we
do
about
the
loader
arms?
Okay,
I,
don't
know,
let's
talk
about
it,
so
so
the
easiest
one
I
mean
one
thing
that
comes
to
mind
naturally
is
simple
weld
of
another
vertical
tube.
Now
these
are
quarter-inch
steel
tubing.
That
would
be
good
enough.
Maybe
you
might
need
a
depending
on
how
high
it
is.
A
You
need
to
consider
it
accordingly.
The
way
that
the
tour
of
dingo
does
it
and
that's
that's
a
good
point
of
reference,
because
they've
got
the
same
type
type
of
configuration
as
we
do.
What
you
see
there,
their
loader
arm
is
not
mounted
very
high
at
all,
I'm,
not
sure
about
how
their
geometry
works,
but
it
looks
like
that
fixed
pivot
point
is
right
there,
and
so,
if
we
had
a
mounting
point
right
here,
we
can
do
something
like
a
front
mounted
cylinder
I
mean
it's
good
to
you
know
start
with
how
they're
doing
it.
A
This
is
all
negotiable.
This
is
this.
We
got
a
design,
there's
no
design
been
done
for
that.
So
this
looks
like
a
good
configuration.
Now.
You
see
an
immediate
issue.
Here
is
where's
the
power
cube
going.
Is
it
in
between
the
loader
arms
yeah?
It
would
have
to
be,
and
if
that's
the
case
then
you
know
we
definitely
have
with
configure
eight
considerations.
A
What
I'm
seeing
immediately
here
is
that
this
machine,
if
you
have
a
power
cube
sitting
in
between
that,
which
is
what
we,
how
we
do
it
we
might
be
ending
up
with
quite
a
wide
machine,
I
believe
that
the
Toro
dingo
is
about
three
feet
or
40
inches
I.
Think
it's
about
40
inches,
so
like
three
feet,
four
inches
wide
so
definitely
get
into
some
challenges.
A
A
A
A
A
A
A
So
you're
adding
10,
plus
10
plus
24
you're
at
44
right
there.
So
definitely
a
challenge.
So
that's
44
inches
is
a
little
under
4
feet.
It's
over
one
meter,
but
for
the
minimum
scale
machine,
yeah
you're
getting
into
some
size
issues
there.
Now
we
can
possibly
make
these
tracks
a
little
more
narrow,
like
let's
say,
8
inches.
A
That
would
be
acceptable
or
even
like
6
inches
I
mean
that's
thin,
but
definitely
still,
if
you
got
six
six
inch
wide
tracks
spread
over
the
whole
floor,
I
mean
over
the
length,
that's
still
very
good
traction
and
once
again
referring
back
to
the
Toro
dingo.
How
wide
their
tracks
are
I
believe
they're,
not
sure
what
they
are,
but
I
think
they're
like
six
or
eight
inches,
I,
think
probably
like
8
inches
I'm.
Not
really
sure
we
can
look
at.
One
of
the
things
to
do
is
look
at
all
the
specs
for
the
Torah
bingo.
A
As
a
point
of
comparison,
there
tracks
are
not
very
wide,
so
you
can
see.
Is
there
like
six
or
eight
inches
Bates
Bates
Bates,
Bates,
Bates,
Bates,
Bates,
Bates
space
space,
space,
space,
space,
space
space
spaces?
So
that's
definitely
a
consideration
for
us
and
for
anyone
desi
now
as
a
small
garden
machine
or
construction
machine,
you're,
getting
right
up
close
to
buildings
or
in
between
aisles
of
plants
or
whatever
you're
doing
you
want
to
have
I
mean
I
would
say
we
can.
We
can
definitely
get
away
with
six-inch
wide
tracks.
B
A
Not
sure
what
they
are,
but
they
don't
look
very
wide
to
me,
they're,
not
at
all
so
I
would
probably
like
because
of
our
width
considerations.
I
would
just
push
that
to
the
limit
and
make
that
about
I
would
say
six
or
eight
inches
for
our
version.
If
we
do
that,
let's
zoom
out
again
here,
if
we
do
that,
then
we've
got
the
24
inch,
24
inch
wide
power,
cube,
plus
six
plus
six
plus
twelve.
It
gets
us
36
and
then
plus
maybe
a
couple
more
inches
spacing
or
whatever
yeah.
A
36
40
inches
is
what
we
should
be
aiming
for
for
the
overall
width
of
the
tractor,
so
that'll
be
our
goal.
I
think
40
inches
is
quite
good.
That's
I
believe
exactly
what
the
torold
Inglis
and
that's
that's
very
small.
That's
that's!
A
very
compact,
so
40
inch
wide
yet
wide
enough
that
it's
not
going
to
tip
over
and
if
you
keep
the
center
of
gravity,
low,
lowest
as
possible,
then
you
can
do
it.
Okay,
let's
see
what
he's
got
so
look
at
that.
A
A
The
mounting
to
the
frame,
you
would
have
to
be
a
very
solid
thing:
I
mean
it's
doable,
but
if
you're
mounting
off
the
side
of
the
frame,
yeah
yeah
doable
definitely
doable.
What
I
could
see
happening
here
is,
if
you
have
a
shaft
going
through
that
Center
shaft,
going
through
the
entire
frame.
That
could
be
a
very
stable
point
for
attaching
the
tensioner
I
like
it.
So
then
you
fix
yeah,
and
that
might
be
now
that
I
see
it.
This
might
be
actually
much
simpler
than
what
I
was
trying
to
do.
A
Moving
the
moving
the
actual
drive
sprocket
all
right,
so
we
can.
We
can
try
this
immediately.
That
looks
like
a
like
a
good
idea.
Don't
see
any
faults
with
that.
It's
more
parts,
it's
this
more
another
idler
here,
but
I
mean
compared
to
the
complexity
of
Dragon.
You
know
moving
this
thing
back
and
forth.
A
This
looks
like
a
more
more
elegant
solution,
probably
less
of
a
part
count
than
what
we
would
do
in
a
in
the
other
way,
because
I
don't
see
a
clear
solution
for
how
you
can
move
the
drive
sprocket
and
then
fix
it.
At
the
end,
you'd
have
to
have
some
kind
of
possibly
an
elongated
hole,
or
some
some
weird
clamp,
like
multiple
clamp
mechanism,
to
make
that
all
happen
there
so
yeah.
This
is.
This
is
conceptually
very
easy
and
definitely
worth
pursuing
excellent.
So
I
would
go
for
this
as
the
initial
design.
A
A
Exactly
like
it
or
very
similar
to
it,
it
could
be
a
smaller
diameter
radius.
Definitely,
but
the
shaft
through
it
could
be
the
same,
like
I,
would
definitely
see
right
now.
One
of
the
versions
of
the
tractor
we
use
1
1
and
7/8
inch,
shafts
and
one
in
seven
8-inch
bearings.
So
we
can
do
probably
something
like
that
here
for
a
small,
tensioner.
Okay,
so
I
think
that
wraps
it
up.
Let's
let
some
let's
leave
it
at
here.
Our
hour
is
up
so
as
we
move
forward,
we
do
the
power
cube.
A
We
can
people
can
start
thinking
about
if
anyone's
inspired
to
actually
start
cutting
this
out.
Please
do
so,
but
that's
the
basic
design
considerations
at
this
point
and
we'll
take
it
to
next
time.
Next
time
we'll
talk
about
I,
don't
know
what
we'll
talk
about
next
time.
I
have
to
think
about
it
depending
on
it.
A
So
the
schedule
is
the
brick
press
power
cube
workshop,
so
we'll
definitely
continue
working
in
a
power
cube
and
once
we
nail
nail
down
the
power
cube,
that's
a
good
point
for
for
being
firm
on
what
exactly
we
have
to
work
with.
For
the
tractor
design,
because
that's
that's
going
to
be
a
big
issue
regarding
the
final
final
dimensions
of
the
power
cube,
what
what
that
ends
up
being
so
we
have
to
move
forward
on
that.
A
Perhaps
the
next
best
step
is
to
really
nail
down
the
power
cube,
so
we
can
work
around
that
for
the
tractor
and
then
talk
about
our
basic
design
configuration
as
far
as
the
loader
arm
geometry.
I
mean
that
will
all
depend
on
how
the
power
cube
is
fitting
in
there.
So
we
can
start
drawing
up
conceptual
designs.
I
mean
we
can.
The
thing
with
the
modular
design
is
what
we
can
do
at
this
point
is
generate
various
sample
files.
A
Ok,
this
is
well
first
of
all
cutting
this
up
in
free
CAD,
so
we
have
these
modules
to
work
with,
but
the
frame
you
know
we
can
design
a
an
initial
frame,
design
and
so
forth,
and
these
plates
that
all
needs
to
get
translated
into
freaked-out.
So
it's
something
that
people
can
do
in
the
mean
time
as
we
work
out
the
conceptual
design.
So
that's
about
it.
Any
questions
on
this
on
this
material.
A
A
What
we
would
see
is:
okay
after
we
got
the
power
cube
like
we
liked
it,
we
might
have
to
go
back
to
the
power
cube
and,
let's
say
and
say
that,
okay,
we
need
to
fix
that,
because
it's
too
wide
or
something
like
that,
we'll
have
to
rework
it
possibly,
but
as
we
go
forward
designing
a
power
cube
for
the
brick
press
and
everything
else,
we
should
definitely
consider
the
minimum
width
consideration
as
part
of
the
design.
Okay.
So
that's
about
it.