The racer asked
what pinion gear with 17.5 t motor
Miles, So Dialed's RC setup AI
For your Team Associated RC10 B6.3 with a 17.5T motor, start with a 31T pinion and the stock 78T spur. That gives a 6.54:1 final drive ratio; confidence is high.
After a short run, check motor temperature. If it is too hot, drop one pinion tooth and check again. You can also check the recommendation here: https://www.sodialed.com/utilities/rc-pinion-recommender?car=associated-rc10-b6-3
Miles
For your Team Associated RC10 B6.3, start with a 31-tooth pinion on the stock 78-tooth spur. That gives a 6.54:1 final drive ratio.
The recommended range is 27–31 teeth, so the 31T pinion is a good starting point. Check motor temperature after a short run; if it’s too hot, drop one pinion tooth. You can check the gearing here: https://www.sodialed.com/utilities/rc-pinion-recommender?car=associated-rc10-b6-3
Answered by Miles, our RC setup AI. Check anything that affects safety or fitment against your manual.