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Looking to get more speed on new boat
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<blockquote data-quote="turbotodd" data-source="post: 393744" data-attributes="member: 7376"><p>Overpropped.</p><p></p><p>You're going to be looking at a 13" pitch to get you in the ballpark, maybe even a 12 but I'd start with 13". </p><p></p><p>People keep thinking that the 15"+ is "right" for those "bigger" motors but they fail to realize that the lower unit gear ratio is pretty sorry, at I think 1.82. The 70hp motor had a 2.33 and would turn a 15"+, but it was a different foot altogether (similar to the 85 and 90 hp). </p><p></p><p>Your hull is on the heavy side and is not a speed demon. They ride good but they tend to have a lot of drag.</p><p></p><p>Start with the prop and go from there. You're going to want to see 5500-5700 RPM max with a light load. Don't be scared to go a hundred or two over the max recommendation. Then when you get it loaded down with the kids, wife, gear, etc...it'll be pretty close to optimal.</p><p></p><p>I wouldn't be surprised to see it pick up speed with a smaller pitch. Sounds backwards but a lot of times it works out that way.</p></blockquote><p></p>
[QUOTE="turbotodd, post: 393744, member: 7376"] Overpropped. You're going to be looking at a 13" pitch to get you in the ballpark, maybe even a 12 but I'd start with 13". People keep thinking that the 15"+ is "right" for those "bigger" motors but they fail to realize that the lower unit gear ratio is pretty sorry, at I think 1.82. The 70hp motor had a 2.33 and would turn a 15"+, but it was a different foot altogether (similar to the 85 and 90 hp). Your hull is on the heavy side and is not a speed demon. They ride good but they tend to have a lot of drag. Start with the prop and go from there. You're going to want to see 5500-5700 RPM max with a light load. Don't be scared to go a hundred or two over the max recommendation. Then when you get it loaded down with the kids, wife, gear, etc...it'll be pretty close to optimal. I wouldn't be surprised to see it pick up speed with a smaller pitch. Sounds backwards but a lot of times it works out that way. [/QUOTE]
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Looking to get more speed on new boat
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