Well, I never...

[BrianG]

I'm impressed. This is the first time I've ever seen detailed current specs on an ESC:

Originally Posted by http://www.rckingdom.co.uk/smf/index.php?page=179

*25C temperature, 5mph air flow through heat sink minimum. Burst current: < 2 seconds duration, 1% Duty cycle.

So, the sidewinder is rated 70A continuous, but 380A in 2 second bursts as long as there is a 200 second delay (3.33 minute) until the next burst.