Originally Posted by
woodys3b
Can you give me an idea of how the 17.5 and 21.5 compare to a 27t stock brushed motor?
They're both faster especially on tight small tracks where the torque superiority of the BL motors shines. 17.5 way faster, 21.5 marginally. On wide open tracks perhaps you could hang on with the 21.5 if the BL esc is fixed timing.