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Old 11-30-2012, 06:34 AM   #5
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Join Date: Jan 2006
Location: Vermont
Posts: 2,832

I measured the center bore on the DH1 propeller with a caliper and got 2 13/16 inches. Keep in mind that the hole may actually shrink a tiny amount as the wood dries out, and the prop is almost 100 years old.
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