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Old May 15, 2012, 02:52 PM
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Help!
Brooklyn Tug Propeller pictures

If anyone here has the Dumas Brooklyn Tug 4" propeller, can you upload some closeup pics for me? I want to scratchbuilt a similar four blade prop, and I want to use the same proportions.

Thanks!
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Old May 15, 2012, 04:54 PM
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The original Dumas propeller for the Mr. Darby was 3 5/8 dia. X 4 pitch. This is when Dumas propellers were cast in bronze.
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Old May 15, 2012, 06:11 PM
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Quote:
Originally Posted by frankg View Post
The original Dumas propeller for the Mr. Darby was 3 5/8 dia. X 4 pitch. This is when Dumas propellers were cast in bronze.
Thanks!
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Old May 15, 2012, 06:22 PM
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If scratch building, go for the original look... the Dumas prop is more modern. The old timers' props looked like a cross between today's ship props and an airplane prop... and likely as not made of cast iron!
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Old May 15, 2012, 07:21 PM
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Yes, that's what I'm looking for. I'm trying to design it in CAD.
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Old May 16, 2012, 12:20 PM
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And once you have the cad model... Then what?
Enquiring minds are interested...
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Old May 16, 2012, 01:33 PM
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Originally Posted by patmat2350 View Post
And once you have the cad model... Then what?
Enquiring minds are interested...

I use Turbocad 3d when I want to scratchbuild something. In this case, I'll experiment with different blade shapes and twists until I get something I like, then I take measurements and build the parts.

If I can make in in 3d CAD, I can build it on my lathe and mill.
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Old May 17, 2012, 12:46 AM
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Check your sizes again, I think that the Brooklyn wheel was more like 3 3/8", I don't remember it being as large as 4"...
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Old May 18, 2012, 12:34 PM
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Here's a model I'm working on for a project...


.
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