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Diameter change and rpm
Generally speaking should a prop of a smaller diameter turn more rpm than a larger diameter prop of the same pitch? Could another inch of pitch on smaller equal the rpm of the larger less pitch prop?
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Moderator
Way too many variables to answer a simple question like that
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OK, 15 1/8 x 25P sho prop vs a 14 3/4 x 26P TXP 3? TXP in props for sale and I need a spare. F200 yamaha on X19 xpress. Unloaded turns 5800 with the sho prop. Loaded about 54-5600.
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Should turn around the same rpms. 1" of diameter is equal to around 400-500 rpms on an outboard.
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Well on a smaller scale here. I have a 13.25 x 21 prop that turns 200 more rpm then the 13.5 x 19 prop I just tried. Talk about messed up.