ORIGINAL: rebuilder
Here is a direct quote of instruction for the UL-1 racing boat:
if you operate your boat at “less than full power” for the full duration
of the run, you might likely experience an ESC failure. The
extra voltage the batteries deliver is being managed by the
ESC and can cause the ESC to get hot enough to fail.
That kinda sounds like a factory excuse for their using a low cost esc in a RTR boat.[sm=71_71.gif] After all, a speed controller is just that. It forks out the amps when required. That is why I like to use a controller rated at double the amps the motor will ask for and provide decent cooling for it.