When My dad and I were looking for motors, we ended up getting two 24
volt NPC motors and the gear boxes that went with them. I made an aluminum
housing so the motors are on top of each other. The motors go through a
reduction with the gear box and then go through another reduction with a single
step chain drive. I got rid of the V-belts because my tank required to
much torque to use them. My tracks compensated for the V-belts because
they are the intralox conveyor belts with the smooth surface. If the tank
gets stuck, the tracks free spin on the ground. It turns great and
runs fast for a heavy tank. I used a 10 tooth #35 roller chain
sprocket. The chain ran to a 32 tooth sprocket from small parts
catalogue.
In the pictures I removed the logic coil battery because I am working
on a turret servo which is powered off of it. I have also removed the
receiver and receiver battery. The black marks on the tracks are slices of
3M tape that are used for traction on steps so people don't slip and fall.
