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OS 55ax

Old 07-11-2011, 07:21 PM
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Default OS 55ax

Whats the ideal RPM for an OS 55ax?? With a 12-6 prop I'm @ 12,750.
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Old 07-12-2011, 05:53 AM
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Default 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.
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Old 07-12-2011, 06:22 AM
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Default RE: OS 55ax

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