[squeeforever]

All you really need to do is make a guess, preferably higher than what you think it will actually draw, and then x1.5~x2.0. That should make give you plenty of headroom. Say a 10XL for example. I would guess a 45-50 (keep in mind, it probably would draw more like 30 amps, but like I said, guess a little more so you have some headroom) amp draw on average if your running hard or racing, so I would say 75 amps continuous should be plenty for that motor. But thats just me...