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Thread: 912UL low RPM

  1. 06-19-2010, 10:24 AM #1
    turboturner
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    Default 912UL low RPM

    couldn't get the usual 5200RPM today - only 4800, with a little roughness. It was fine on a previous flight half hour earlier, so I ruled out the OAT (30deg C). Both mag sets check OK (150 RPM drop on each @ 3000RPM). Visual inspection revealed nothing unusual. Fresh 92 octane gas. Suggestions/thoughts... anyone?
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  2. 06-19-2010, 12:14 PM #2
    DesertFox4
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    Default Re: 912UL low RPM

    What kind of prop?


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  3. 06-20-2010, 08:40 AM #3
    turboturner
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    Default Re: 912UL low RPM

    3 bladed, gd adjustable warp drive - thnx.
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  4. 06-20-2010, 05:21 PM #4
    Av8r3400
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    Default Re: 912UL low RPM

    Check your carbs, cables and/or air cleaners. Sounds like a classic case of carbs-out-of-sync.
    Av8r3400
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  5. 06-21-2010, 04:48 AM #5
    turboturner
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    Default Re: 912UL low RPM

    Found the problem: rubber flange between right carb & intake manifold was cracked open on both sides.
    Thank you.
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  6. 06-21-2010, 12:57 PM #6
    cap01
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    Default Re: 912UL low RPM

    get the good carb sockets , www.jbmindustries.com .
    chuck
    kitfox IV 1050
    912ul warpdrive
    flying B , yelm, wa
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