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Well looking into I'm getting the new Tohatsu 20hp 4-stroke within the week for my WeldCraft flatbottom 1432 jonboat. It's all-welded and weighs around 210 pounds empty, and at the moment I have been running a Briggs/Stratton 5hp. By myself I can get it up to around 13mph with light gear, but with more than 2 light people on it it can't even plane.
1). Will it still be realistic to plane with 3 or 4 (~145lb.) guys?
I then found this plane speed calculator. I entered all the weight and hp and speed to get a constant of around 135. According to the calculator, I should be able to get around 25-27mph with the 20hp while by myself. Anyone ever test this calculator to be accurate? What are yall's jonboat constants at?
Thanks!:big_smile:
1). Will it still be realistic to plane with 3 or 4 (~145lb.) guys?
I then found this plane speed calculator. I entered all the weight and hp and speed to get a constant of around 135. According to the calculator, I should be able to get around 25-27mph with the 20hp while by myself. Anyone ever test this calculator to be accurate? What are yall's jonboat constants at?
Thanks!:big_smile: