Time to test locate the motor and install the drive sprocket. Notice the metal cylinder in the drive sprocket. A set screw is being used to secure it to the motor shaft. As you can see, it's pretty simple to do this, it's also pretty simple to replicate this architecture up front and make it a a 4 point tracked system (hybrid) or full tank, by just extending the track all the way to the front and adding more wheels. When I go full tank, I will want to raise the ground clearance.