MacGregorSailors.com

macowneril2015 wrote: ↑Tue May 23, 2023 7:37 am I recently had a new new Mercury 60 HP outboard installed and I am having issues hitting the WOT RPM range and the installer has been less than helpful saying what I reached (5,000 RPMs vs the manual range of 5,500 - 6,000) as good. I believe I am "over propped " and need to buy a different prop. I am not sure if any one has insight here but I am out over my skis a bit with figuring this out.

Herschel wrote: ↑Sun Aug 09, 2020 8:37 pm When I replaced my '98 50 h.p Merc and had my new Yamaha 50 h.p. installed on my 26X back in 2013, I had been experimenting on the Merc. with 14 in diameter props with three different pitches (10, 11, and 13), finally settling on the 10 to help get the Merc engine RPM's up close to the prescribed range at WOT. Frankly, I was a little tired of constantly wondering if I had the right pitch going. When I asked the Yamaha dealer about the pitch of the new prop for the Yamaha 50, he said he had a perfect prop for the boat. He was a dealer in Trader pontoon boats, and he seemed to be really knowledgeable, so I went with his recommendation. He put on a 14 inch, aluminum, 11 pitch prop, and I have been totally happy with it. I top off at 15.3 mph with my wife and copious gear aboard. It runs in the mid 5000 revs at WOT, so I am happy on all counts. And my Yamaha has never failed to start in the past 7 years except one time in the first year when I got some bad gas. And that is my story and I am sticking to it.

kurz wrote: ↑Wed May 24, 2023 1:33 am First tell us what Prop you have now on which boat