Quark 125b thermaling

[BrianG]

To help cool the ESC, thus preventing thermaling (or at least prolonging it), add a heatsink to it. The nice flat bottom is where the FETs are attached, so use that spot to mount the heatsink. I know it's not the best solution, but it does work. I added a 1/8" thick L bar to my 125B along with a couple PC memory heatsinks (mostly for show) and have reduce temps by about 12 degrees F after about 15 minutes. The added thickness of the aluminum provides more thermal mass to pull the heat from the ESC and more surface area for the heat to dissipate. I'm not how much this will help in racing, but it sure as hell can't hurt!

Of course, no heatsink will work without proper airflow. If you aren't using a fan, then airflow through the truck body is paramount.