[jhautz]

All I know is I was looking up the 1950/7 on the Lehner site and its different than in the speed calc. I thought maybe there was a reason for it, but if not it looks like many of them are incorrect. Just pointing it out so you can update it if its not correct.

I do know that Lehner uses a loaded kv value.... but they dont publish what the load is so who knows what that actually means.

I will say this though. In my own calculations I use the Lehner loaded values and the nominal cell voltages (for example 14.8v for 4s) without any voltage drop and the speeds that are calulated are dang close to the real world speeds I get. When using the unloaded values from other motor you have to account for the voltage drop for the calculated speed numbers to match real world.