Thread: Vane propellers
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Old 01-13-2007, 02:21 PM
Alan Bates Alan Bates is offline
 
Join Date: Apr 2006
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Wear on propellers in silty water remains a problem today. Shipyards keep a small stock of props on hand for replacement. Everything happens to them that Admiral Porter mentioned even though the "cutless" bearings of today have reduced that problem to a manageable level. The tips of propellers wear into lovely lace patterns. They get bent by hitting obstructions and a heavy log that floats between a prop and a bearing strut can do a lot of damage. Hitting a buoy does them no good.
The vane propeller would be subject to all of these sources of trouble excepting the bearing problem and in addition, I think, would vibrate terribly.
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