Neu motor question.

[SpEEdyBL]

A 1515 and and a 1512 of the same wind will have about equal power (differnent gear ratios needed to get the same speed, power, runtime etc), though the 1515 has slightly longer coils so it will be equivalent to a slightly higher turn 1512 motor. If you gear the 2000kv 1512 with a 17 tooth pinion and the 1700 kv 1515 with a 20 tooth pinion, (assuming you use the same wind in each motor) both will have about the same performance and runtime.