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Thread: OS 55ax


  1. #1

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    OS 55ax

    Whats the ideal RPM for an OS 55ax?? With a 12-6 prop I'm @ 12,750.

  2. #2
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    RE: OS 55ax

    Mid-to-high-12,000's is a good place for full-throttle RPM on the ground when leaned to just rich of peak RPM. Your RPM looks right.
    Bill Baxter, Manager Hobby Services/Futaba Service/North America
    3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
    Service Phone: 217 398-0007
    Email: hobbyservices@hobbico.com

  3. #3

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    RE: OS 55ax

    How about 11K +/- using a 13x6? Or would you consider that too much prop for the .55?


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