Hi essex2visuvesi,
I just found your build and I have a few remarks:
- You should treat us with pictures of the build, please?
- The ESC you complain about is similar to the ones I use for competition speedboats and have no low end control to speak of, hence the abrupt starting, a 80 or 100A Car ESC, like the Easyrun has a much better low end control.
You may have to modify the blower section by removing the entire cooler en replace it with a (home made) watercooler, but you may get away with just the aircooling.
- The coupler in the picture is a potential weak spot in your drive train, either cover it entirely with a piece of tightly fitting silicon tube, so the parts won't fly throught the boat when it (eventually) explodes under load, or replace it with a solid coupler, a universal coupler isn't designed for fast boats.
- How did you lay the piping of the cooling? In a boat that size, getting a steady flow without resorting to a seperate waterpump is very well possible.
Regards, Jan.