RE: Source for small speed control ?
Umi
I looked at the ProBoat unit also, the $40 price isn't bad. And I like the waterproof aspect of the ProBoat ESC but it's only available as a 40amp unit, a bit much for my 2.4amp motor. Also the higher amp units typically have a higher resistance making them more inefficient at the low amperage draws. I did buy a ESC from eBay last year, don't know the make but it was rated 40amps and it sure looks like the ProBoat unit, I'm using it in a 26" speed boat.
Incidently in all this searching I also found a unit by Dynamite (DYN4925) that sells for $30, does forward/reverse and will handle 110amps continuously. Should be a great unit for a speed boat !
Richard