I'm looking for some ideas for the best prop for a Yamaha F60 (4-stroke) on a 4.5m aluminum RIB. I have tried a 11.1" x 14 aluminum (non-cupped) with slippage above 4000 RPMs. Is stainless worthj the cost for this small a motor?
--Paul
mite want to try some alterations to the alu' prop to get a better idea of what she wants, before throughin down for A SS prop. have it cuped and see if it bites better.
Thanks, will give it a try. I've used only SS props on bigger (225hp) engines because they handle the power much better. But on this smaller power plant, just wasn't sure which way to go.
mite cost 50bucks to have the alu cuped, does she keep slipin after4000?, the pich mite be to short for the hull. how does she pull on plain? how is she to 4000?
Good advice for the cupping. I'm making headway, however. Lowered the motot a notch and ran it yesterday: 37 mph @ 5800 rpm. Very little slippage, and then only above 4000 with some trim. Now a cupped prop should do the trick...my goal is 40. I have a quick on plane time, so maybe slightly more pitch?
