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Thread: What prop?


  1. #1

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    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

  2. #2

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    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
    Wingspam

    If I make it look easy then your watching the wrong plane

  3. #3
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    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
    3W, BME and DA all the way. Proven power, Proven reliability and Proven support equals much cheaper in the long term.

  4. #4

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    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)
    Jan Karlsson - Supplier MVVS Products

  5. #5

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    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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