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What prop?

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Old 02-01-2011, 12:22 PM
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StephenUK
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Default What prop?

Hi guys,

can anyone tell me what props I should use on a 46 two stroke motor? The motor is an SC 46 ABC motor. I really want to make it rev!

many thanks

Steve
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Old 02-01-2011, 02:03 PM
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Default RE: What prop?

On an Os 46 ax I normally turn an 11x6, but if you want it to reach top rpm then try a 9x6 or 9x7
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Old 02-01-2011, 08:14 PM
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aussiesteve
 
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Default RE: What prop?

As you are posting in the Sport Flying Section, I will make the assumption that you want it for sport flying.

Try a 10/6 or 10/7 for general use.

If you want to make it scream, do as Wingspam suggested - 9/6 or 9/7.

If you want to make it scream and go fast, do some experimenting and try an 8/8 or similar
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Old 02-02-2011, 08:53 AM
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jaka
 
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Default RE: What prop?

Hi!
At sea level a 10x6 prop is too small for most sport airplanes.
Better use a11x6 or 12x4 or 12x5 .
11x6 for low winged plane with a span of 135-145cm weighting 2,0-3,0kg.
12x4-12x5 for a high winged plane with a span of 160-170cm , weighting 2,0-3,0kg.
For a low winged faster typ of plane, like a Q-500 racer weighting 1,6-1,8kg , a 9x6 or 9x7 APC is the prop of choice.
Never ever use MA black props! They are not good performance vise.
Best props today are RAM, APC and Graupner Cam-props (Not the old blunt tipped grey ones though)
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Old 02-02-2011, 12:14 PM
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StephenUK
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Default RE: What prop?

Hi Guys,

Thanks for your help, its much appreciated, I picked up a 9x6 and a 9x7 from my local model shop today.

regards

Steve
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