View Full Version : brushless vs brushed
revo madnesss
05-17-2009, 05:07 PM
what is the diffrnece and which one would be better because i hear that there is a brushed version coming out but form my understanding brushed is not as good as brushless so why are people waiting for brushed version
buzzsaw 46
05-17-2009, 05:50 PM
Brushless is much better but more expensive, it is easy to drop in a brushless motor ESC on the brushed version so if you can get a brushed one it wouldn't be hard to convert it.
Shelby VNT
05-17-2009, 06:19 PM
what is the diffrnece and which one would be better because i hear that there is a brushed version coming out but form my understanding brushed is not as good as brushless so why are people waiting for brushed version
1) About $80.
2) Brushless = more speed, torque, longer life, and less maintenance.
3) Because they don't want to spend $280, or because they want to choose an aftermarket brushless system for it themselves.
Brushless is pretty much all the rage these days and for good reason.
Cainam
05-17-2009, 08:22 PM
As for why brushless is better:
1: No brushes or commutator to wear out. These have a limited useable lifetime, and the more performance you want out of the motor, the shorter they will last. The only thing that can go bad on a brushless motor (besides being overheated or physically damaged) is the bearings.
2: More efficiency. A slow brush type motor will maybe be 75% efficient. If you want faster, you can get it, but the more power a brush motor makes for it's size, the less efficient it is. Stock class racing motors are horribly inefficient - maybe 55%. The manufacturers will easily give up 3% efficiency to get 0.5% more power. (for what they are made for, that is fine, but for bashing, not so good.) A brushless motor is usually in the high 80% to low 90% efficient. More run time.
3: More power. Since you aren't wasting the batteries on making the motor hot, brushless motors can be designed to put out more power than the same sized brushed motors.
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