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3D Flying Discuss everything related to "3D" flying including construction, power setups and flying techniques

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Old 08-10-2017, 07:59 PM   #1
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Default Prop Diameter for 3D

OK things are slow here now, so here is something to do. OK I have a "48" Extreme Flight 540 EDGE EXP have have been using 3S cells and 14 x 7 , and 13 x 6.5 E Props from APC. Happy Happy. However I just purchased a few 4S cells which requires a smaller less aggressive prop. The manual says 12 x 6 but as I run Calculations, a 13 x 4 is a better fit. Uses less power and develops more thrust than the 12 x 6.

OK I know a 13 x 4 will not the air speed a 12 x 6 pitch. Not concerned about speed. What I do not know which is better for 3D flying a larger or smaller diameter prop? My gut tells me bigger is better as it will produce a wider column of air over the control surfaces. Only down side I can see is the larger prop will have more P Factor Torque.
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Old 08-10-2017, 08:56 PM   #2
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I enjoy 13x4 (wood) on the suggested Torque motor. Less top end but amazing pull out authority. Try it, it may suit your taste in flying. Yes, bigger is more suitable post stall. I have friends running 14x7s on the Xpwr 3910 and they love it. I just don't feel like buying another motor.

I don't have a short temper. I just have a quick reaction to B.S.
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Old Today, 03:43 AM   #3
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