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Old 02-05-2013, 06:26 AM   #11
Bob Gardner
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Join Date: Jan 2006
Location: The North of England
Posts: 1,748

Ah Yes! Well spotted, Dave. So it's a USN prop made to the design of Dashwood Lang for a Liberty-engined Cutiss H 16 flying boat. All we need to know now is if it is half of a four-bladed prop or a two-bladed prop. For forumites who have joined recently, four bladed props were difficult to store and handle on board a warship, so they were made as two bladed props with a hub that was half the size of a normal hub and two were bolted together at right angles.

This hub should be around, say, ten inches deep from top to bottom, but if it's meant to be bolted to another prop, it will be about five inches thick. (These dimensions are illustrative not factual.)

With kind regards,

Bob Gardner
Author; WW1 British Propellers, WWI German Propellers
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