I drilled holes through the bottom of the truck and bolted a piece of thin steel to it. Then, I bent the piece of steel around the truck. Next, I made a template for the motor mounting plate and used that to make a steel mounting plate. I cut out a long rectangle and cut a half circle out in the back. Finally, I welded the mounting plate to the piece of steel I had bolted to the truck. Everything held together tightly for the most part. It does rattle a little when you drive it because of the piece bolted to the truck kind of bounces when you ride over semi-rough terrain.
Despite the boards flaws I decided to ride it across a slightly downhill path. It was OK. The tensioner didn’t really hold the belt any so it just kept slipping. I accelerated slightly, a little more than if I were ride without the motor. I tried to ride it on the same path in the opposite direction and it couldn’t handle it. My solution is to get a smaller belt and tighten it as much as possible by repositioning the motor. The only reason I used the tensioner is because the belt that I ordered was too long to begin with.
Also, while I was testing the board there was A LOT of interference with the transmitter. I was using a standard 2.4ghz rc car transmitter and receiver. I sat the transmitter down and it kept going back and forth repeatedly. I think a wired controller is going to be the way to go from here for safety.
TO DO LIST:
-Buy and install new shorter belt.
-Make electronics enclosure.
-Make a wired esc controller out of a servo tester and wii nunchuck.