[hemiblas]

I run a 7XL geared 20/68 on an emaxx and it runs hot no matter what you do. I run mainly on the street, so its low stress compared to sand, dirt etc etc and it has gotton up to 180 degrees. I added 2 40mm fans and a heatsink to keep the motor cool. It is working for me and the motor doesnt go over 145.

If you check my picture, that was my first attempt to keep the motor cool. 80mm fan on a cheapie heatsink. Now I run 2 heatsinks with 40mm fans and it works much better. Even getting air over the can isnt enough. You really need a good heatsink and enough air through there to cool it down.

5s on a 9xl or 6S on a 10xl would be a better choice to keep the amps down and keep the motor cooler.