[tkhoo]

Originally Posted by Arct1k

RPM is a factor of voltage and motor KV - You can gear up with a bigger pinion to get the speed you are looking for - An 18T should give you about 30mph with stock 2.2 tires

http://www.scriptasylum.com/rc_speed/_top_speed.html

oppp! Sorry, yeah...what I mean is the speed By the way I plan to get ~40 - 50km/h that mean using 15T pinion. So may I know with 15T pinion, can I have good torque when out of turn? Thanks from all your advise. I am new on electric