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Old 01-17-2018, 06:17 AM   #6
Bob Gardner
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Join Date: Jan 2006
Location: The North of England
Posts: 1,727

'Morning Martin,

We can tell one or two things from your prop. It is a flown example because there are witness marks where the hub plate was fitted. The bolt holes have little or no evidence of the ovality, which occurs in the thrust plane. So once fitted to the aircraft it didn't fly far before it was broken. The damage suggests the prop was on a tail-dragger rather than a tricycle undercarriage. It's not modern because it is wooden. A modern light aircraft would have a fibre-glass prop.

All of this suggests that it is from a British private light aircraft which flew in the 1930's and 1950's.

I don't have a record of a five-foot propeller but the aircraft listed below all have small props and tiny engines. Google should provide photographs.

Miles Whitney-Straight with a Gipsy engine had a 6'2" prop.
Miles Hawk with the Gipsy Six R engine, a 6' prop.
Monospar ST25 with a Niagara III engine, a 4'6" prop!
The Supermarine Sparrow with a Blackburn 1100cc engine had a 4' prop.
(Supermarine might have called this aircraft the Sparrow because it could only fly in ground-effect, hopping over hedges.)

However, all the above is merely my line thought!

With kind regards,

Bob Gardner
Author; WW1 British Propellers, WWI German Propellers
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