Quote:
Originally Posted by BUSAFIED
ok...so on a 3S (40/80c TP 5000mAh) set up with an 11T pinion, the truck is frikkin nuts. wheelies galore, near backflips off the jumps (if i'm too heavy on the throttle on the face) and general mayhem going down the straight.
on 4S, it's even worse. front tires the size of paper plates, double backflips if I hold the throttle in the air off the jumps, and my drive train is screaming for mercy/vengeance.
So...would I need to gear up (say a 13-14t pinion) on a 4S while retaining the stock spur? Or do I need to gear down (a 9T pinion?) to help temps?
I'm lost as of now...the combinations I've tried usually end up in huge amp draws that make the motor quite unhappy.
the best combo i've found for a 3S with the stock spur is an 11T pinion. motor temps usually range from 123-126F, ESC (MMM) is around 125F, and batts are around 110F.
So...if I wanted to duplicate those temps on a 4S, what pinion would I need to run?
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123-126F is luke warm on a motor. My truggy is pushing 175 after 20 min mains of conservative driving. And I'm running a 1515 2.5D tekno neu. Ambient air temps were quite high though as well as humidity levels.
3s on a 2700kv motor is enough to race with. It pulls more amps than a lower KV motor on higher cell count, but that's where it's getting the power from. Until you're seeing upwards of what I'm experiencing, I wouldn't go to 4s unless you had a lower KV motor.