Here is everything you ever wanted to know about props.
http://boatfix.com/how/props.html


"John Davison" wrote in message
oups.com...
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.