I am in the process of trying to have extra props and in need of replacement. I received great advice from senior members about a mishap I experienced as a new boater. I have been reading Chapmans like a bible!! Advice I get from the book about different props is basically left to personal preference.
I have a Carver 33SS (38 LOA) with twin 6.0 mpi crusaders that comes with standard 22X 22 nibrals. I found 2 different deals for brand new 21X22 and 21 X 24 nibrals ( obvious difference is diameter and pitch). It would make sense to go for the 21X24 to reduce rpm load on my engines ( with regular gas andf less heating that way?) and maybe enhance gas mileage?? Also -- having a higher pitch when I put the boat in gear without using the throttles, what does that do to my idle speed ( go higher I would guess) ( but a smaller diameter might make it negligible)..
I am just trying to process all this wonderful new boating language!
Thanks for all your help.