Originally Posted by
aceinthesky
i have the 43t spur and 18t pinion on a silver can, it seems not to have enough top speed what pinion/spur combo do you guys recommend ?
With a silver can shoot for a 5:1 final drive ratio then add teeth to the pinion until it starts getting over 170 for a full run. If you can, get a 21.5 brushless setup and give that a try. Right now you're geared for 6.474 FDR. (43/18) * 2.71 = 6.474
Try a 39/21, FDR of 5.03 and temp. Keep adding teeth to the pinion approaching a taller 4.0 from there if the motor is still good on temp. If already too hot take away a couple teeth and keep going down until the temps drop. I'm assuming you have the fast spur gear set: 35, 39, 41, 43. My Tamiyas typically run somewhere in the 3.5 to 5.5 range depending on track size.