Inside
No car selected — showing a generic 5×5 grid with approximate values (0.5°/step).
A / FF mount
B / FR mount
A / FF mount
B / FR mount
AI Feedback on Your Setup
Talk with an AI Mechanic that actually knows your car's exact setup, anytime, anywhere.
Free RC tools to dial in your car between rounds.
RC Gear Ratio Calculator
Pinion + spur + internal ratio → final drive ratio, rollout, and chart of nearby combos.
RC Speed Calculator
Motor Kv, battery voltage, gearing, and tire size → top speed of any electric RC car.
RC Pinion Recommender
What pinion should I run? Pick your car and motor; get a starting pinion from real race setups, with the range racers run.
RC Gear Ratio Chart Maker
Build a printable pinion/spur chart for any class: gear ratio (FDR) or rollout (mm). 1/10, 1/12 pan, 1/8 presets included.
RC Corner Weight Calculator
Enter per-wheel weights to compute cross weight and balance, critical for oval and on-road tuning.
RC Shock Oil Weight Converter
Convert wt ↔ cSt ↔ Mugen / Yokomo numbers, plus starting-point oil weights by class.
RC Shock Damping Calculator
Changing pistons or oil? See how much the damping actually moves, at roll, bump and jump speed, before you open a bottle.
RC Battery Runtime Calculator
How long will your LiPo last? Estimate runtime by class and driving style.
Mini-Z Wheel Offset Calculator
Fitting an AutoScale body to a Kyosho Mini-Z? Get the exact wheel offset for any width, plus a wheelbase & motor-mount reference.
Free app
Have this calculator handy at the track
Pit Calc Pro puts this pill insert geometry calculator — and 8 more tools — right on your phone, so you're never without it when you need it most.

