RC10Talk - The Net's Largest Vintage R/C Community

I added a hydra drive.

I modified a 90 tooth gear and the backing plate so I could use a 69 tooth spur and the great thing about having the extra gear is that it turns the same direction as the motor and tires.

Minter wrote:Please describe your observations in the difference in handling between forward and reverse motor rotation. Very curious!

The car jumps better with the 4th gear and has a little more rear traction.