Monster X and TP4250, motor smokes during KV Test

[Lizard]

Finally tried the Monster X with a brand new TP4250 4Y 1570KV.

First test inside my apartment, started it twice and ran it for like 5 meters with 5kph. No problems.

Then did the Torque Control motor test, spinned it up, after 2 seconds or so, there was smoke coming from the motor cables :( Stopped immediately, touched the cables, they were _not_ hot, just slightly warm, also everything else was cool.

Data log shows 14A peak current, 10A after full RPM has been reached. Isn't 10A a little too much for a 42x81 420g motor? The detected kv value doesn't seem to match the RPM in the datalog, 1869 KV should give 42400 RPM with 22.7V instead of 37600 RPM. Maybe that is because the test was not completed?

Apart from that everything looks normal (?), no high currents, no big voltage drop, no big temp rise. Although the temps seem to be offset around 10C, it was 23C in the room when I started the ESC.

I am a little puzzled, I see smoke, but no high currents, I cannot feel anything being hot or even warm? What's this? Motor toast from the beginning?

Here is the datalog and a video showing everything:



[youtube]http://youtu.be/pL-jO18OHJA[/youtube]
http://youtu.be/pL-jO18OHJA