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Old Sep 25, 2012, 09:39 PM
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Originally Posted by DuPageJoe View Post

I'm glad your getting good service from the motor. I don't think the HK data is wrong as it is conservative. The only way to test it is with a 5X3 prop on there. The prop power demand goes up fast with diameter, especially at the high RPM that motor turns at.

Now that you have your meter, you can run through different props and make your own data.

Keep 'em flying

Had another big surprise motor wise today. Tested a FC 28-05 2840KV motor. HK has 2s and a 5-7 inch prop as recommended. HK forums state a 3s and 6x3 prop is okay. 3s and a 6x3 prop was 231w and got hot real fast. If I had followed that advice I would have cooked it. 2.75x2.75 on a 3s was 187w and motor stayed warm. Perfect choice.

Glad I got that meter. Should be able to make accurate decisions now.

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