i have a fit racer that i put a super racer pcb in and a bunch of different gears in. now my worst car is my best. my question is what my gear ratio is. 8 point pinion Z gear, red Z transfer gear, and white 9:86 clone wheel gear. no matter what motor i use it out runs all my cars with 3.0's in them. it's the fastest and most controllable car i've ever seen. it's like a suped up slot car that never loses traction. unbelievable speed nad handling.