My ESC is too hot?

[Dafni]

Hmm, if your motor stays cool, it would indicate it's not undergeared. But I have to admitt it does not make much sense. I run a similar KV motor as you (1950/6 turn) on 15/51 and 14 Ni cells. And I only have a 99amp ESC (with fans, now)
Binding would have been my suggestion too.
Also, if the wires itself get hot, you must have an enormous amp draw (hot batteries would mean the same) And with this kind of gearing you really should be fine.

Here's what I would look for:
-does the motor spin free when you turn the shaft by hand?
-is the driveline really smooth?
-can't think of anything else... maybe try 12 or 14 Ni cells?
-or check all solder connections

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