Here we are attaching the spur gear (a quality Kimbrough 32p) to the rear hub.

The axle has recesses in it on either end. We attach the hub with grub screws, ensuring that they settle inside the recess.

Here’s a shot of our ungodly motor, the Castle CM36 9,000KV

Now we install the 32p pinion and loosely bolt in the motor. I had to use my own motor screws as the ones that came in the kit were too long for this motor.

Now that the motor is loosely bolted in, we slide the axle shaft with spur into the chassis. We set the gear mesh, and tighten the motor down.

Once the motor is fully bolted, we remove the axle shaft, and tighten up the metal chassis brace we left loose in the beginning. This metal brace gets pushed up tight against the motor, acting as a brace. Tighten that down, and then reinsert the axle shaft.

Once the axle is back in, we install the hub on the other side.

Next up, steering and electronics!