i have a mini revo and i'm wanting to run two 2s lipo in series so if i put the castle 1 /10 sidewinder on it and leave the stock motor will i beable to run 2x2s lipo in series i know i'll have to upgrade my diffs but i don't care about that right now
thanx

2 2s lipos in series would be nutcakes on that thing. And I know you said your not worried about your diffs "right now".. But after one run with 2s IN SERIES you won't have diffs to be worried about.. Take it from me. Course I'm runnin a 1/10 HW System in mine... I can ONLY run parallel cause if I run my packs in series, NASA picks it up on their radar...

thanx for the replies only reason i want to go 4s is i want to go at least 50 mph and do standing backflips i'm running two 2s 20c lipos in parallel an i get 40mph and wheelies but no backflips -

I can run an 11.1v 3s battery to backflips, unwillingly, I done a speed test the other day and it was 48mph with more throttle just no more room to accelerate. It's the stock 380 velineon with original gear

3S with the speed gear installed should easily break 50mph... and still wheelie. I can't imagine ANY kind of control with 4S in one of these