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Old 05-15-2010, 05:49 AM   #21
Bob Gardner
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Join Date: Jan 2006
Location: The North of England
Posts: 1,643


When the RNAS and the RFC were merged into the Royal Air Force in April 1918, the Air Board held a competition to find the best Camel prop and the Navy design AD644 turned out to be slightly better than the Lang prop LP2850. So it was produced in large numbers during 1918 and still retained the drg no AD644, although the Air Dept of the Admiralty had ceased to exist.

At this time Sopwith (who made the Camel) had bought the Lang company and it had become Sopwith's in-house prop maker.

So Ruston almost certainly made AD644 props for their Camels but I have not yet seen one.

With kind regards,

Bob Gardner
Author; WW1 British Propellers, WWI German Propellers
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Old 05-15-2010, 10:56 AM   #22
Join Date: May 2010
Posts: 23


Many thanks as always. This is an amazing subject.
While I am waiting for the book, could you or anyone comment on what the original finish was on these AD 644 propellers, if any? As I look through my books, there seem to be a few different hues and even fabric applications to the blades. I suppose there was a standard, being military and all.

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