I finally got some enthusiasm to do some work on this boat. Today wasn't the best day to water test, way too windy, but it finally got wet, very briefly though. After a few seconds it developed a fault I could not fix at lakeside. One of the motor outer cans was slipping on the shaft, the retaining grub screw felt real tight, but on inspection, the thread did not actually go all the way down through the can, so whilst I thought it was tight on the shaft, it was bottoming on the lack of thread, this is an expensive Overlander motor (compared to the cheap online Chinese motors). The motor is intended for a rc plane, now that would have ended in disaster if in the air.
Another problem when bench testing, the pair of 50amp reversing speed controllers, brand new and unused, although bought over a year ago, wired them up, and one smoked immediately (yes it was wired correctly!), flipping chinese online stuff, so no return, no warranty, and now I don't have a matched pair, guess what, they don't make this sort anymore, so I need another pair
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So it ran briefly, but slowly, with a 3 cell lipo for each motor. Pleasingly the rudder posts did not appear to leak now they have been reset so they are straight, and I had the throttle going the wrong way, so I can a progress on, after I have bought another pair of speed controllers!