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9.6V on an Electrifly S280BB motor?

Old 02-13-2004, 04:23 PM
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J.Paul Saure
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Default 9.6V on an Electrifly S280BB motor?

Hello there!

I've been flying glow for almost 10 years, and I just bought my first electric setup for a small par flyer. I bought an Electryfly S280BB motor with BB gearbox and an electrifly C-10 speed control.

Why does the S280BB motor show a 8.4V rating when I can see that most other S280 motor are rated for 9.6V....
Will I electrifRy the motor if using an 8 cell pack?? I figure I won't use more than 70% power (less than 8.4V) most of the time, and if the motor, controler and battery are well ventilated, short bursts of full power wouldn't hurt that much.... Am I mising something here?

Thanksa lot!
Old 02-14-2004, 04:57 PM
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Dr Kiwi
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Default RE: 9.6V on an Electrifly S280BB motor?

The 8-cells (9.6v) v. 7-cells (8.4v) really is not the issue - the important thing is to choose the correct prop to keep the CURRENT below the maximum recommended for the motor. Power (W) = volts (v) x current [amps] (I). As long as you don't go overboard and increase (v) so much that you over-rev the motor, you are usually better off increasing your volts a little and lowering your amp draw (i.e. maintaining W at the same as before).

Cheers, Phil

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