Originally Posted by
Alexv2024
The higher KV motor has less turns to make more rpms at the same voltage as the other motor. That also means it has less resistance and can draw more amps.
Like mod vs stock on a track. Stock 17.5 can't make a triple coming out of a tight corner, but in mod with a 7.5 the triple is no problem. You still gear down the mod motor, but the speed is higher and the acceleration is a lot higher as well.
With your example of regearing the faster motor the acceleration should be MUCH higher to the same top speed. It comes down to less turns = more amp draw and more rpms at the same time.
Yep, assuming the same general motor types the higher kv (or lower turn) motor will have more power and performance everywhere. Likely even a bit more top end in the example, as the more powerful motor will overcome secondary effects like air drag better, get closer to the no load speed rating.
Tradeoff though, more amps and power drains the battery quicker, reducing runtime, and can lead to heat issues if gearing is not right.