Originally Posted by chrislow
Excuse me if this is a stupid question, but. I'm using a 13.5 novak now but want more speed torque etc. Was thinking of 10.5 or 8.5, as i'm using a XBR that's my choice. My question is, whats the difference between these motors if i geared them for the same top end speed, ie small pinion on 8.5 and larger gearing on 10.5. Cant i get the same speed out of both, and if so what will be the difference, which will have more punch out of the corners?
Right now with my EX13.5 when i gear it for the straight i have no punch, very sluggish out of corners. Any advice will be appreciated.
Basically it comes to this: The less winds a motor has, the more power. Which means that normally a 8.5turns motor has got more power than a 10.5. When gearing in a way they have to same top speed, it will mean the 8.5 has got more torque (punch). But you should keep in mind, that if you want you motor to stay in a good condition the gearing is important. the best way to check if you have the proper gearing is to make sure you car reaches top speed at around 2/3 or 3/4 of the longest straight/full throttle part of the track. After the run check how hot you motor is, the motor should not get to hot. However up to around 70/80degrees Celsius is still acceptable.
But the 8.5 will be the faster motor, but you should check what other people of your club are using, so you will be able to join the races.