I was running my 54 Fountain today and had one ESC shut down from overheat. Upon looking at this ESC I feel the cooling sucks on them. Just a tube that runs through. Then you have this huge opening, I know this is for air cooling.
But why not fill the cavity with water running through.
This is what I did and I will see how it works tomorrow.
I simply cut some small pieces of stainless steel, drilled and tapped for the hose nipple. Then roughed the back of the plate and the ends of the opening on the ESC and used JB Weld to fix the plates in place. It holds pressure very well and I have to imagine with water flowing through there it has to cool better.
The last picture shows the new water routing. In the bottom of the new closed in chamber, out the top then through the original useless ports.
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