Need lipo suggestion

[BrianG]

OK then, I wonder if there is something wrong?. The 7s is rated for 5070kv (unloaded). With about 40ish amps through it, the kv would probably drop by 50 or so. On 2s lipo and geared right, it should be able to move quite well. 25A burst doesn't sound right. That should be pulling closer to (or higher than) 50A at a guess.

Granted, the 7s isn't a high-end motor, but it should still go quite well. After running the setup a while, what is the hottest component?