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Old 05-25-2015, 04:20 PM   #17
Join Date: Oct 2013
Posts: 2

Originally Posted by Bob Gardner View Post
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,

Thank you for all of this information and apologies for the long delay in responding to your question. The hub for this prop is approx. 7 1/2 inches deep - so I am not sure if that qualifies it as a two or four-bladed prop. Any assistance with this would be greatly appreciated!
tks/rgds, John
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