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Old 08-20-2017, 08:36 AM   #13
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Join Date: Nov 2008
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Originally Posted by Mike View Post
Any idea where I might start doing some research on left hand pitch props? Still curious to do some more digging on these.
The challenging problem is that there were thousands of different wooden propeller designs that had been used in the first 40 or 50 years of aviation. Some were high production items, some were homemade, and some were clearly labeled with identifying information and some were not. The problem attached to that is that there are poor records at best that could be used to trace numbers back to the actual or intended use for the propeller.

So even with clear stampings it's often hard to determine what the prop was for. The left hand thread isn't unusual, but isn't particularly helpful either, as it just eliminates some of the more common applications but doesn't point to any specific one.
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