ESC Requirements

[speedracer1129]

That will be all relative to your gear ratio. The more speed you want, the higher the amp draw will become. I would suggest to get the biggest thing you can, at least 100amps continuous. Actually, you might be well off with one of lutach's ESCs.

[Marvin]

I'm looking for at most 40mph, 5s 5400mAh, using a 1900kV motor, and I have no idea what the current will probably be.It's going in an 808 with 'standard' (16/42) gearing. Apparently using RC-Calculations it will reach ~35000 rpm to get 41mph (no drag), 39mph (with drag).