motor and batteries stay cool, esc gets hot

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Alright, I'll try the ubec and maybe a fan. On my last controller when I was having thermaling problems I finally got a fan, and while it allowed me to run longer the controller fried shortly after! It was cool on the outside but burning on the inside...

The 6xl specs don't seem that much more radical then the 7xl, and many people seem to run the 9920/7xl combo no problem -- maybe I should just get a 7xl. It would be cheaper than another controller.

Dafni -- you finally solved your heat problems on the E-Revo? Was the solution just to add a fan?