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Pdelcast
RC-Monster Titanium
 
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Join Date: Mar 2008
10.05.2009, 02:52 PM

Quote:
Originally Posted by J57ltr View Post
I asked if having a smaller pinion could cause more back EMF that could cause a failure if the batteries are up to the task, to which the asnwer was



So basically to me he is saying that in 99% of cases having the smaller pinion can cause this problem with the regen braking. But he ends with the statement of smaller equals less stress.

Those two statments given that Patrick are opposed to one and other unless he meant 2 different things.

Small pinion+bad batteries= damaged ESC

And Small pinion= less stress on the ESC under load.

Or he missunderstood higher numerical ratio.


Conclusive answer?
sorry -- I guess I misread the original statement. Higher gear ratio (smaller pinion) = less stress (lower reverse currents to the battery, lower ripple voltage.)

Any time you let the motor rev more freely, it is easier on both acceleration currents and braking currents.


Patrick del Castillo
President, Principle Engineer
Castle Creations
   
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