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Old 03-02-2019, 07:43 AM   #8
Bob Gardner
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Join Date: Jan 2006
Location: The North of England
Posts: 1,734

Postscript: six bolt holes were common on early aircraft and are found marked for 100ps and 120ps engines.


1 minute research !
Bob Gardner
Author; WW1 British Propellers, WWI German Propellers
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