i have got a 4600kv but i think its slow i was going to order 5700kv or 6900kv or 7700kv but my esc is a ezrun and my 5.5turn motor is 6000kv will hit be as fast or not as my car uses a 78 spur what size pinion gear would you start with and i have a mamba castle esc and when i tryed it with my 5.5turn motor it made a squealing noise when you put a bit of power on but sound bad
