Are Zippy Lipos safe with a Castle MMM Speedy?

[Pdelcast]

Originally Posted by fastbaja5b

Got it, so what you are saying and what you are saying Castle is saying is to gear 6s by the manual which is a 25t pinion and forget ALL conventional wisdom on the matter.

...if you say so then thats what I will do........

I don't want to lose my warranty.

That's certainly not what I said.


I suggested you use the smallest pinion that gives you the performance you want and isn't too hard on the batteries/motor/ESC. You can test this by checking temps during your runs.

If you see temps above what is safe (120F or so), back down on the pinion.

Smaller pinion means less load on the motor, and cooler temps, and longer life.

[e-mike]

also the air flow in the body and the timing setting to lowest

[JThiessen]

Originally Posted by Pdelcast

That's certainly not what I said.


I suggested you use the smallest pinion that gives you the performance you want and isn't too hard on the batteries/motor/ESC. You can test this by checking temps during your runs.

If you see temps above what is safe (120F or so), back down on the pinion.

Smaller pinion means less load on the motor, and cooler temps, and longer life.

Yes - this is exactly what Castle can and should say. They can't contradict HPI on here, nor should they.

FWIW, I stubbornly wanted to try 6S/25T on the Flux tonight, and after 20 mintues, I decided it wasn't worth the hassel at this point. It earned my first failing grade for it with the work required to change the pinion. Its definitely NOT a quick change situation. So if you have one, better figure out what batteries you are going to run, gear appropriatly for that, and go have fun - dont bother with different sizes of batteries assuming you'll just quickly change the pinion. There's more on that in my Flux thread in the HPI section.