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Old 09-10-2018, 04:23 PM   #1
bobbop
 
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Default Propeller of Unknown Provenance

I have a propeller that appears to be post WWI. It's 100 inches long, and it has a center hole but no mounting holes. It's constructed of laminated wood. It has numbers written in pencil on the hub that read 38315/384 as best I can tell. Was it a pattern or reject? Any guesses?
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Old 09-10-2018, 04:31 PM   #2
Dbahnson
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It could be almost anything, including non-aviation usage. A picture might help.
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Old 09-12-2018, 11:43 AM   #3
bobbop
 
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Default Propeller of Unknown Provenance

See attached photos of the unknown propeller.
Attached Images
File Type: jpg IMG_0079.jpg (98.1 KB, 6 views)
File Type: jpg IMG_0080.jpg (93.3 KB, 3 views)
File Type: jpg IMG_0081.jpg (95.4 KB, 5 views)
File Type: jpg IMG_0082.jpg (96.5 KB, 5 views)
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Old 09-18-2018, 08:03 PM   #4
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It's almost certainly one that was rejected in the manufacturing process and never actually completed. While it's a long shot, it might be one of the "toothpick" propellers manufactured by Jacuzzi Brothers in the teens or twenties. I say that only because I've seen a Jacuzzi propeller with a very similar geometric shape.
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Old 09-19-2018, 02:56 PM   #5
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Thanks. Miles Hustad, the Propeller Man, said virtually the same thing although he had no guess where it came from. The lack of mounting holes and the rough surface on the blades indicate that it was never used. I will follow up on your suggestion about the Jacuzzi Brothers. Bob Hester
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Old 09-19-2018, 03:18 PM   #6
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Another question about the suggestion that this may be a Jacuzzi Brothers "toothpick" propeller: The brothers got out of the propeller making business at the insistence of their parents in 1921 when one of them was killed in an air crash. Rather than a manufacturing reject, is it possible that this propeller was one that had only been partially completed when they got out of the business?
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