I try again with a number of different props and an old 6s boat ESC. The props fly off or break and nothing seems to work. Meanwhile, the weather gets cold and I don't have another setup to try before I am done for the season. I buy as Christmas presents to myself the missing gearbox for the SSS motor and the Seaking ESC.
Over the winter I read up on all the latest as the forum moves over to efoil.builders from Endless Sphere. Still seemed too complicated to run all that stuff with talk of needle bearings, seals, extra shafts and couplers. I know from experience how much more powerful the big motors are. Everything works in my head and on paper. I decided to try out both options from last summer, the c80100 and the Boma motor. I printed a prop for the c80100 motor that enclosed the whole motor with the prop designed on the outside of the can. As the can spun the prop would turn and there wouldn't be a need for anything extra. No waterproofing or anything, just had the cover screwed into the motor. For the Boma 1500w motor, I just fastened a Solas prop on the back with a set screw. This time I try both setups in my backyard pond. I'm not driving to the lake to find out the prop is unscrewing, the set screw is coming loose or the prop blows up and flys off.