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Importance of Diameter in Prop Selection???
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Gudmundur
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In article .com,
says...
The ideal prop for my boat is a four blade 14.5 x 18. I've found a
used prop that's 13.5 x 19. Would this prop be similar in performance
to the 14.5 x 18? In other word, does decreasing an inch in diameter
have the same effect as increasing an inch in pitch?
~J.
A larger diameter is generally more efficient. The prop you found will
probably suffer at low speed, or under heavy load. To reduce the diameter
will increase your engine rpm's, but the larger pitch would bring them
right back down again, however, your smaller diameter just won't work
as effectively, and the result may not be worth the investment.
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