Yea that's about it... 25-30mph assuming a stock prop on a calm day--less if you really got it loaded down with people or equipment. That's still moving pretty decent for a small boat. Tuned just right or with a tail wind you could theoretically hit 35mph. Ideal cruising speed will be around 18-22mph. I'm thinking my 14ft tin on a 35hp Evinrude will go around 30mph, and i'm sure my tin weighs less then your fiberglass.
Is it a runabout? bass boat? cruiser? I don't really have a useful prediction, but it may be helpful. I would say anywhere from 32-40mph depending on the weight and profile in the water.
Is it a runabout? bass boat? cruiser? I don't really have a useful prediction, but it may be helpful. I would say anywhere from 32-40mph depending on the weight and profile in the water.
I have a very Light weight Shell lake 14' runabout with a 40 on it and 30mph is impossible. I was getting 21mph WOT Gps But my 4 blade prop might be the issue there. Still I think tops is 25
If you know your LU gearing(i.e 2.41), your rpm, and your prop's pitch.....use this calculator for theoretical speed. Use 8-10% prop slip as a general number in the calc. If you are heavily loaded or boat is waterlogged...slip number will be higher.
I have a very Light weight Shell lake 14' runabout with a 40 on it and 30mph is impossible. I was getting 21mph WOT Gps But my 4 blade prop might be the issue there. Still I think tops is 25
My guess is you have the wrong prop on... you could easily get another 5mph with the right prop. Should be a triple blade about a 10.5 x 12 pitch... you could go 11 or 13 pitch depending on if you want a bit more hole shot or top end.
Is it a runabout? bass boat? cruiser? I don't really have a useful prediction, but it may be helpful. I would say anywhere from 32-40mph depending on the weight and profile in the water.
