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Thread: OS Engine Expert needed....engine "cackles"
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Old 06-15-2009 | 04:35 PM
  #16  
aerowoof
 
Joined: Jun 2006
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From: pembroke, NH
Default RE: OS Engine Expert needed....engine
it could be the prop tips going supersonic this happens when an engine use a smaller prop.especially in a dive does the sound go away in a climb when the prop is under a load?
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