Max HP formula

[MichaelMullis]

Is there a generic formula for figuring the max hp for pontoons? I have been looking at toons for a couple of weeks and most that I see seem to be realy underpowered. Ex. 28' w/ 40 0r 50 hp, or 20' w/30hp. I would think that a formula that takes log diameter and length plus weight of deck<br />would give a close guess. I have not seen any capacity plates on any of these toons.

 

[phatmanmike]

Re: Max HP formula

uscg max hp formula is as follows:<br />length x 2 x width - 90 = max hp<br /><br />example 17 feet long by 6.25 feet wide would be...<br />17 x 2 = 34<br />34 x 6.25 = 212.5<br />212.5 - 90 = 122.5<br /><br />round up to the nearest "5" in hp, so round up to 125<br /><br />but also keep in mind weight of boat, conditions boat is use id and allowable weight of motor plus gear.<br /><br />if your allowed 1000 pounds of motor and gear and you always carry 800 pounds of gear, dont get a 400 pound motor. commo sense