pitsco Sled Pull Challenge Kit User manual

Sled Pull Challenge Kit User Guide 66801 V1015 1
Sled Pull
Challenge Kit
User Guide
66801 V1015

2Sled Pull Challenge Kit User Guide 66801 V1015
Cautionary and Warning Statements
• This kit is designed and intended for educational purposes only.
• Use only under the direct supervision of an adult who has read and understood the instructions
provided in this user guide.
• Read warnings on packaging and in manual carefully.
Materials Included
For Tractor:
• Sheet of laser-cut basswood parts
• 4 Phillips head screws (two 4-40 x 1/4 Lg. and
two 6-32 x 1/2 Lg.)
• Motor with prewired connectors
• AA battery
• Battery module
• Gear font
• 4 axles
• 30 metal washers
• 4 wheels
• 2 self-adhesive foam tabs
• 2 hex nuts (6-32)
• 4 rubber bands
• 8 spacers
• Wooden rod
• 2 #4 nylon washers
For Sled:
• 1 sheet of laser-cut basswood parts
• 14 metal washers
• 1 plastic string anchor (on white font)
• 2 wheels
• 2 rubber bands
• 1 aluminum axle
• 1 piece of string
Items Required (not included)
• HD Bond II (or other white glue) • Phillips head screwdriver
Building the Tractor
1. Pop out the laser-cut parts
from the basswood sheet. Lay
a Part 1 piece at on its side.
In the rst slot on the front
of the tractor, glue a Part 2.
Moving back on the tractor
from the top to the bottom,
glue in the Part 3, the other
Part 2, and the Part 4 (Figure
1).
2. Glue the other side of all
pieces in the rst Part 1. Place
the other Part 1 onto the
parts so they t snugly into
the same notches (Figure 1).
3. Glue the Part 5 into the slot
on Part 4 with the hook on
Part 5 facing the rest of the
tractor (Figure 1).
4. Take the wooden rod and glue it into the hole on Part 3 (Figure 1).
Figure 1

Sled Pull Challenge Kit User Guide 66801 V1015 3
Installing the Motor and Battery Module
1. On the bottom middle of Part 1, slide the motor
into the opening so that the holes on the motor
line up with the holes on Part 1. Note: You can
install the motor on either Part 1 piece (Figure 2).
2. Attach the motor to the tractor body using two
4-40 x 1/4 Lg. screws and the two small nylon
washers (Figure 2).
3. Place a 6-32 x 1/2 Lg. screw into the hole at
the end of each wire coming from the motor.
Put each screw through a hole beneath the
rectangular indentation near the front of the
tractor. Make sure that the head of the screw
is on the inside of the tractor, and secure the
screws in place with a nut (Figure 3).
4. Remove the foam tabs from the paper, and apply
one to the bottom of the battery module on each
end.
5. Remove the backing from the foam tabs, and
place the battery module into the rectangular
indentation near the front of the tractor (Figure 4).
Attaching the Wheels and Gears
Note: The following is one of many gear
combinations you could use. You don’t have to use
the gears in the instructions. This is just one way to
get the tractor moving.
1. Insert a 2-3/4" axle through the front hole in
the tractor and push a small wheel on each end
(Figure 5).
2. Remove the 10T gear with a 2 mm hole from the
gear font and place it on the end of the motor
post (Figure 5).
Figure 2
Figure 3
Figure 4
Figure 5

4Sled Pull Challenge Kit User Guide 66801 V1015
3. Insert a 2-3/4" axle through the
third hole from the motor. Put a
spacer on each end of the axle. On
the end of the axle by the motor
post, attach a 50T gear with a 1/8"
axle hole and attach a 10T gear
with a 1/8" axle hole on the other
end (Figure 6).
4. Put a rubber band around the edge
of both large wheels (Figure 7).
5. Insert the 4" axle through the
eighth hole from the back of the
tractor. Put four spacers on the end
of the axle closest to the motor and
put two spacers on the other end
(Figure 8).
6. On the end with four spacers,
attach a large wheel. On the end with two
spacers, attach a 60T gear with a 1/8" hole so
that it meshes with the 10T gear in front of it.
About 1/2" away from the 60T gear, attach a
big wheel to the end of the axle (Figure 8).
Driving the Tractor
1. Place the AA battery into the battery module (Figure 9).
Figure 6
Figure 8
Figure 9
Figure 7

Sled Pull Challenge Kit User Guide 66801 V1015 5
2. To make the tractor move, attach the red wire
clamp to the screw coming from the red wire on
the motor and attach the black wire clamp to the
screw coming from the black wire on the motor.
This will make the tractor move forward. To make
it go in reverse, switch the clamps to the opposite
screws (Figure 10).
Building the Sled
1. Pop out the laser-cut parts from the
basswood sheet. Find the three Part 2s
and a Part 1. Glue one end of the Part
2s and insert each one into the three
open slots on the long piece of the Part 1
(Figure 11).
2. Glue the other side of each Part 2 piece.
Place the second Part 1 on top of these
parts so each Part 2 piece ts into the
same slot on both Part 1 pieces (Figure
11).
3. Take Part 3 and insert it into the notches
below the label on the Part 1s. Apply
glue in the notches so Part 3 is secured
into the notches (Figure 11).
4. Take Part 4 and a Part 5 and glue the Part 4 piece on top
of the Part 5 so that Part 4 lines up perfectly with the
middle of Part 5 (Figure 12).
5. Glue the other Part 5 onto the other side of Part 4 so that
the Part 4 is sandwiched between the Part 5s (Figure 12).
6. Place the combined Part 4 and Part 5 piece into the
slot on the Part 2 piece located above the Part 3 piece.
Make sure the combined Part 4 and Part 5 piece has
the smooth end facing out and glue it so the
combined piece is secure (Figure 12).
7. Take the two Part 7s and place them so they
t into the open slots on the Part 6 piece. The
Part 7 side with the 7 label on the bottom ts
into the slots on Part 6. Glue Part 6 and the
Part 7s together (Figure 13).
8. Take the two Part 8s and t the open slots
onto the sides of the combined Part 6 and Part
7s. Glue the Part 8s onto the combined Part
6 and Part 7s. They create a box with an open
top that rests on top of the sled (Figure 13).
Figure 10
Figure 11
Figure 12
Figure 13

6Sled Pull Challenge Kit User Guide 66801 V1015
Attaching the Wheel
1. Locate the wheels and axle.
Remove the string anchor from
the font. It is the smallest piece
in the middle.
2. Put the rubber bands around the
wheels (Figure 14).
3. Attach a wheel to one side of the
axle (Figure 14).
4. Slide the axle through the rst
hole on the front end of the sled.
This is the side farthest away
from the 1 label (Figure 14).
5. Before taking the axle through
both holes in the front of the
sled, slide the axle through the plastic string anchor and center it (Figure 14).
6. Slide the axle through the other hole and attach the other wheel (Figure 14).
Attaching the String to the Weight Box
1. Tie a loop on the end of the string and slip it over the string anchor.
2. Guide the other end of the string
through the holes in the Part 2 pieces
to the back of the sled and up into the
crevice made by the combined Part 4
and Part 5 piece (Figure 15).
3. With the box resting on top of the sled
above the wheels, slip the string through
the hole in the box and tie a knot. Cut
the string and use the remaining string
to attach the sled to the tractor (Figure
15).
Figure 14
Figure 15
String Anchor

Sled Pull Challenge Kit User Guide 66801 V1015 7
Attaching the Sled to the Tractor
1. Thread the second piece of string
through the two holes on the opposite
end of the sled from the wheels and tie
a knot in the string (Figure 16).
2. Hook the string from the sled onto
the back end of the tractor into Part 5
(Figure 16).
Activities
• Try out dierent gear ratios to see which
combinations give you the best torque.
Adding metal washers to the tractor and
the sled will help test this.
• Use dierent materials around the
wheels to see which gives better traction
such as tape, multiple rubber bands,
sandpaper, and so forth.
• To increase the challenge, set up a ramp
for the tractor to pull the sled. See which
gear ratio works best for the challenge.
Figure 16

P.O. Box 1708 • Pittsburg, KS 66762
www.pitsco.com
Toll-Free Orders 800-835-0686