E-Flight Power Sources Ask questions or read about power sources as they specifically relate to e-flight including Lithium-ion, Li-Poly, Nimh and Nicad battery packs.



Old 04-30-2011, 05:33 AM
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Default TR80-85-B

I am building a Top Flight Corsair and making it electric. Now they say that it’s going to run 27bl. So I figured that I needed 5400 watts and the TR80-85-b will give me 6000 so now I what to know what prop I should use? I will be running a 12s lipo.
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Old 05-28-2011, 03:59 PM
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Default RE: TR80-85-B

From HobbyKing reviews: Very impressive, on 12s 5000mah, 22x10 prop, 100 amp ESC, we pulled 90 amps, 4,100 watts, 7000 rpm and about 11 kg of thrust.

That suggests you'd need a considerably larger prop to get to 5400W-6000W... and about 120A-130A!!!!

But also from HobbyKing reviews, several have mentioned loosening of magnets at modest temperatures!

This is a pretty amazing motor as far as power goes, BUT, you must upgrade a couple simple things.

1. Put loctite on setscrews and torque well!
2. Check windings and make sure they are tight.
3. Replace bearings with higher quality sealed cartridge type.
4. Replace cheap mild steel circlip with a quality spring-steel circlip.
5. The glue WILL begin to soften too much heat so vent WELL or reinforce magnets small amount of CA glue.
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