Guess the motors!

[Nick]

1) It's a 7XL, 73mm.


I thought it might be a Feigao?



And what is this one?

2) XL again

[Nick]

2nd one is a Feigao, not sure what KV it is or how to find out though?

[suicideneil]

1st one is also a feigao, just a finned can version.

The kv on the second one should be on that label- check under the heatsink clamp, but it may not have been filled in.

You'd need some sort of tachometer to check the rpms on any given voltage, then do a bit of mathe to workout the rpms per volt = kv rating. Im so old I cant remember the sum myself... :/

[BrianG]

Bah, just take the rotor out and count the windings.