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Wood prop vs. sythetic/gas prop vs. elecric on electric conversion

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Wood prop vs. sythetic/gas prop vs. elecric on electric conversion

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Old 01-06-2012, 07:22 AM
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1911tex
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Default Wood prop vs. sythetic/gas prop vs. elecric on electric conversion

Hanger 9 .40 cub; .46 size motor. Any experience using a wood prop designed for gas (12 x 8) on my electric. Or a synthetic prop (12 x 8) designed for gas on my electric? Pros and cons if you use a gas built prop on an electric motor?
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Old 01-06-2012, 07:46 PM
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Default RE: Wood prop vs. sythetic/gas prop vs. elecric on electric conversion

About the only thing I would say is that the wood and fiber glow/gas props are going to be a lot heavier then the thin "E" props. The APC E prop, I think, was made to produce more thrust at a lower RPM. My electric planes run about 8,000 to 10,000 compare to the glow engines at 13,000 or so. I could be wrong though.


Buzz.
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Old 01-07-2012, 05:07 PM
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Default RE: Wood prop vs. sythetic/gas prop vs. elecric on electric conversion



Completed the maiden with wood gas prop on the electric J-3 Cub above. No problem. Esc and motor cool after 8 minutes.

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Old 03-10-2012, 09:04 PM
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Default RE: Wood prop vs. sythetic/gas prop vs. elecric on electric conversion

Hi

Electric props are designed to produce less drag resulting in less amps the motor drains out of the battery.
The airfoil of the APC-E props is much thinner as on the same sizeglow version.
If you use a glow prop, you usually waste flying time.

But even if you compare E propsthere arebig differences.
My RV-4 from GPis powered with a Rimfire 1.20 motor. The motor uses about 82 amps with a 6S 5000mAh battery and a
16x8 APC-E prop.
But it only uses 75 amps with a 16x10 Fiala wood e-prop.

The Fiala prop has a much better efficiency, givesthe airplane a better speed and a better climb performance AND it uses 7 amps less than the APC-E prop.
Thats why i tend to exchange my APC-E props with Fialas.
Fiala might be the best e-prop money can buy.
The only problem is, that it is hardly available.

Regards

Andi
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