Whats the best prop size for 1:1 gear box and 330 hp Captains Choice (twins)?? 28 Flybridge
My wife just loves the 72' 28 ft flybridge Sports Express. I have my eyes on one but before I decide, I have questions about the power set-up. The very kind, Rachel, at the Maritime Museum, stated that originally, the vessel had 245 hp with a 1.5:1 through a 3:1 gearbox and 1410 props in some instances. So, with the 330s and 1:1s, what's my ideal prop size?
Hopefully, someone reading this has had experience with the set-up and will pass along greatly appreciated knowledge. I'm trying to avoid the cost of experimentation. The story goes that the last props on the vessel were 1312s and I have no info as to their performance.
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The current props are 13x12 with 1:1 gears, and the boat reaches 24 knots at 4500 rpm WOT. The Crusader manual says WOT should be 5000 rpm.