Motors And Gears - pitsco Tetrix Creator's Manual

4) Drop an 80-tooth gear over the screw end,
followed by a set screw axle hub (Figure A7).
Thread the screw through all four parts. Repeat
this with the other three screws.
5) Slide an axle about 1/4" in the hub and hold it
while tightening the screw using the 3/32" hex
key (Figure A8). Be sure tighten to it against the
flat side of the axle. Do not overtighten.
6) Insert the bushings in the hole where you want
to place the axle – there will be one on each side
(Figure A9). Push the end of the axle into the axle
hole.
7) To lock the axle in place, put an axle set collar
over the end and push it against the bushing
(Figure A10). Turn the collar until the screw is
facing the flat side of the axle. Use the 1/16" hex
wrench to secure it to the axle.
8) Repeat Steps 1-7 for the other side of the chassis.

Motors and Gears

1) Attach a 40-tooth gear to a motor hub using four 1/2" SHCSs (Figure A11). If you
think the screw heads might rub against other parts, you can use BHCSs instead.
2) Take a DC motor and place it through the back of the motor mount so the motor
shaft points toward the wheel.
3) Take the gear assembly and slide it on the motor shaft with the gear facing out.
Adjust the motor until its gearbox is centered in the motor mount. Slide the gear
assembly on the motor shaft until the 40-tooth gear is aligned with the 80-tooth
gear (Figure A12). Tighten the hub screw with a 3/32" hex wrench.
4) Turn the motor until the 40-tooth gear meshes with the 80-tooth gear (Figure
A12). Tighten the clamping end of the motor mount with the 7/64" hex wrench.
5) Repeat Steps 1-4 for the other side of the chassis.
TETRIX by Pitsco 39132 V0909
Figure A7
Figure A9
Figure A12
Figure A8
Figure A10
Figure A11
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