Evoracer, this is castle motor CM36 and its 7700kv. I though it will be good enough with this gearing, but never tried it yet. Maybe you are right. I have other pinions, 26,27,28 and 31T so will try different setup. About mounting the motor, I'm almost sure its correct. I compared to picutres in the manual and over internet and there ppl mount it the same way. Maybe problem is with this small pinion. Will try these days and see what happen.