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.


Which pumps are people using for water cooling the ESC?


Dumb questions:

  1. why don’t you put the ESC inside of the mast or propulsion casing so that it can dump heat into the water via the conductivity of the surrounding aluminum?
  2. Does the battery unit itself need active cooling? (On ebikes they are often air cooled)


There isn’t a lot of room inside the mast for the esc. Not sure about the batteries, it probably depends on which batteries you have.


What do you all think of these aluminum enclosures? I think they will do better with the heat than the poly carbonate boxes. IP67 waterproof, is that enough?