Stupid question:

Is the KV 1700,

 for example


 is this the number of copper coils?

1700 copper ? 


thank you

tells nothing about the copper, it gives an idea of the max rpms if multiplicate by the voltage.
differnt kv does result by different winding mainly, high kv means less turns, low kv requires much turns.

1700 KV will give 1700 RPM for 1V

Wow, Ask and you shall receive! Thanks for linking that terrific video. It definitely filled in the gaps in my knowledge of how kV, A, V, motor winding, and now heat, interact.