Cooling the ESC


I think using the forward motion of the foil to ram water through the tube is attractive for it’s simplicity but I worry about debris clogging the tube causing the ESC to be damaged from overheating. Having the waste water vent out in a highly visible location is a great common sense sanity check that cooling water is flowing as expected.

Another approach might be a closed loop cooling system using the hollow metal foil mast as both a heat sink and coolant reservoir of clean water. Might help keep the wires cooler too.