uct
Member
Current motor 40 merc/force speed loaded about 25. What kind of speed could i expect with a 75 hp 2 stroke?
With lower HP you'd be quite correct, when you go up in HP the rule mentioned about is close. As a kid I had a 7.5 HP that got me to 14 MPH, bumped it to a 15 and got 22 MPH.MrGiggles said:Going from 10hp to 25hp increased my speed by 13mph, or .86mph/hp. That's going to vary a lot depending on load, props, etc., and is not going to be directly applicable, apply that formula to your setup and you'll be doing a projected 50+mph, which is optimistic IMO. I'd say 40 tops, likely mid 30s.
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