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Old 01-02-2010 | 05:05 PM
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daveopam
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From: ELK CITY, OK
Default RE: Extreme Flight Extra 300-EXP 48
Could be the tips of the prop are going super sonic. I had a SS 90 that ran a ST90 and a 14x6 prop. In a dive the prop tips would go super sonic and really start making noise. I wonder if this is what you are hearing?

David
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