Nookie Monster
09-28-2004, 10:29 PM
I have a 1975 Lund S16 open fishing boat that measures 16’-1” down the center, has a 63” beam, a 45” bottom, a 1005 pound capacity and is rated for a 40 hp motor. With that being said, I have a few questions.
How is the hp rating for any given boat determined?
1) Is it a function of the weight of the motor?
2) Is it a function of the hull construction?
3) Is the motor rating a function of weight and hull/transom construction?
If it is a function of weight, then how does one determine the maximum amount of weight that can be hung off the transom? Modern day 40 hp four strokes weigh a lot more than a 1975 40 hp two stroke, so is a new 4 stroke going to be too much weight for this boat?
If a motor rating is a function of hull construction, then could an 80 hp motor be mounted but only ran at half speed? Is a hull designed to only perform up to a certain speed and then come “unglued” if that speed is exceeded?
If a motor rating is a function of weight and hull construction, will a heavier motor sit fine on the boat when the boat is in the water, but will the heavier motor tear up the transom bouncing around on the trailer during transport?
Does the weight of the motor figure into the 1005 pound capacity for the boat?
I want to put the highest hp rating I can on this boat but I am not sure if a newer four stroke is the best way to go. I called Lund with some of these questions and they didn’t want to specifically answer them.
Any input would be appreciated.
How is the hp rating for any given boat determined?
1) Is it a function of the weight of the motor?
2) Is it a function of the hull construction?
3) Is the motor rating a function of weight and hull/transom construction?
If it is a function of weight, then how does one determine the maximum amount of weight that can be hung off the transom? Modern day 40 hp four strokes weigh a lot more than a 1975 40 hp two stroke, so is a new 4 stroke going to be too much weight for this boat?
If a motor rating is a function of hull construction, then could an 80 hp motor be mounted but only ran at half speed? Is a hull designed to only perform up to a certain speed and then come “unglued” if that speed is exceeded?
If a motor rating is a function of weight and hull construction, will a heavier motor sit fine on the boat when the boat is in the water, but will the heavier motor tear up the transom bouncing around on the trailer during transport?
Does the weight of the motor figure into the 1005 pound capacity for the boat?
I want to put the highest hp rating I can on this boat but I am not sure if a newer four stroke is the best way to go. I called Lund with some of these questions and they didn’t want to specifically answer them.
Any input would be appreciated.