I 've got a 8x 15 hull on the trailer that I have been having some Issues with.I got my tape measure and it was 8'3" across the top outside to outside at the rear.I measured the bottom it was 80" chine to chine.At work I measured 2 boats both of different manufacture.They both measured 7"6" across the top and 80" across the bottom chine to chine. I could tell my eight wide boat ain't no wider than a 7'6" across the bottom.I reckon my issue is that the boat ain't wide enough.I ordered a new hull with a 90" bottom this should solve my problem.Also another tid bit I measured a friends boat and trailer that is parked in my yard.His boat measure 8'7" across the top and 80" across the bottom.The big Kicker is the trailer measured 9'6" ,I always did think the trailer looked a little wide goin down the road.Talk about the DOT havin a Field day. The moral to this story is eight feet ain't necessarily eight feet.
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hull width
- Thread starter stan
- Start date
flying fish
Well-known member
Stan-
you say the 90" bottom boat should solve your problem.
I was curious. What characteristics does your present hull have that you dis-like?
you say the 90" bottom boat should solve your problem.
I was curious. What characteristics does your present hull have that you dis-like?
lil_armond
Well-known member
The general rule of thumb in the boats I a familiar with would be as follows. 15' x 8" that would mean the actual bottom is 6'. My rig is a 14' x 7' the actual botton measures 5'.
I reckon it has to do with capacity. extending the top width with out extending the bottom width doesn't do much for incresseing the carrying capacity along with the effect that by flaring the sides out without extending the height of the sides tends to lower them thereby incressing the chance of taking on water over the sides which I have recently expierianced more often then I like .Big boats come off the bottom pretty hard.
Pm if you don`t want to make it public. ThanksPicked up the new hull last Saturday,with out any riggin in the boat it sure looked like a Hoss ,Alumitech sure does fine work. We slid the hull on the tailer and it fit like a glove any wider and it would have been sitin on the fenders.Hull sat on the trailer at the house untill tueday night when Cheryl and I proceed to Roho's place over in Scramble Town.Back in 2003 Roho won the southeast limited late model championship up at the Volusia speedway and bein 60 years of age decided to retire within days of the last race Roho sold all of his racin gear cept for his scales and uniform .
Our plan was to weight the hull before installing the motor and rigging Roho and Daina were standing in the shop when we arrived scales rolled out and inplace ready for the weigh in .We slid the hull on to the scales and Roho and Daina went to work with the scales talling up the totals.The end Result was 800lbs dead even with poly across the bottom and up the sides.Roho being the type of feller he his repositioned the scales and reweighed the hull.We brock out the tape and measured the length at 16' ,width of the hull at the top rear was 8'6" across,across the bottom at the rear measured 7'6",we also measured across the bow and it measured 7'3".Next step the installation.Roho did mention that I was cruel for bringing the new hull over after lookin it over He got to wanting one for his self.Pictures to follow
Our plan was to weight the hull before installing the motor and rigging Roho and Daina were standing in the shop when we arrived scales rolled out and inplace ready for the weigh in .We slid the hull on to the scales and Roho and Daina went to work with the scales talling up the totals.The end Result was 800lbs dead even with poly across the bottom and up the sides.Roho being the type of feller he his repositioned the scales and reweighed the hull.We brock out the tape and measured the length at 16' ,width of the hull at the top rear was 8'6" across,across the bottom at the rear measured 7'6",we also measured across the bow and it measured 7'3".Next step the installation.Roho did mention that I was cruel for bringing the new hull over after lookin it over He got to wanting one for his self.Pictures to follow
goldhunter_2
Well-known member
Just food for thought the rule of thumb originally set y USCG and opted by commercial and home builders is to measure the gunnels (widest point of the hull) if you want a wide boat you have to ask for it otherwise 8' is the gunnel measurement and not the bottom surface
lil_armond
Well-known member
Not to mention that with the sides being straight up you could catch a nasty edge in a turn and there you go. 
Waterthunder
Well-known member
You will find there are 20 way's to do things with a hull and each design is good at something. 10 years ago I had a very wide deck over you couldn't get it stuck on the ground but try and ride a little trail behind an old peanut Gore hull and you felt like a pinball in a pinball machine. Them old narrow bottom round sides are great for grass but stink in the water. You need a hull that is designed for what you do most!
precisely There thunder ,Myself I prefer the short narrow nimble Hulls .On the other hand the Best half she prefers wide,long,and high sided.She doesn't swim that great takes half of what she owns with her on the boat and has all the money ,so big it is.Besides since most of our time is spent on Lake George ,bigger is better I believe this new hull is goin to fit the bill it should pull on plane with a heavy load and cruise at a lower rpm .We shall see,
Saturday looked pretty misty and cold so I took the opportunity to spend the day with the Daurghty's at there camp down the road from the house, ate sausage ,drank coffee and bs till dark .I did shoot at a buck ,missed ,just as well I didn't want to Quit huntin to clean no ole deer ,it being the last day and all.
Spent the best part of Sunday and Monday (holiday) puttin the riggin in the new hull .At 4pm all that was lacking was the bilge pump and carpet on the deck.I said to Cheryl "load up let's take it to the lake" needless to say I didn't have to say it twice.We put it at the Coffee pot. The wind was blowin out of the NE at about 15mph.Which packed the water in on the south shore to about 2 feet deep.I eased the boat out heading east ,threw some juice to the motor.I was quite suprised when it went on plane with little effort.GPS was tracking us reading 20mph. After a mile or Two and checkin to make sure the ole motor was feeling comfortable ,I eased out into the deep water .\
The lake was a little rough ,not white capping but it was puttin up about a foot and a half swales.It was a smooth ride going cross wind just on plane.I then proceeded to go with the wind ,going up than down the swales still on plane at 20 mph waiting for water to spray over the bow of the boat ,no grass rake on this hull yet,the water never came.Cheryl said later on the way home that if she would have gotten wet it would have been her last ride till a rake was installed.She can stand a lot of things ,gettin wet ain't one of em.
Took the boat back to shallow water up into where the eel grass grows,put her into the wind and and l let her breath.GPS registered 48.8 with no sign of porpoising.I did notice that the boat handled real well cept when I turned it a little it wanted to turn more .It didn't act like it was on it's nose cept when i turned .I brought it around with the wind and gave the horse's there head .A very smooth ride ,GPS showed 55.4. With that we headed back and put her on the trailer.I do believe that I'll slide the fuel tank back a little bit to see if it helps.I realy thought it would porpoise.On the old new hull I had the center line of the belt drive mounting bolt set 14" in front of the transom and it porpoised.This time I set it at 18" . All in all I'm very well pleased with the maiden voyage
Spent the best part of Sunday and Monday (holiday) puttin the riggin in the new hull .At 4pm all that was lacking was the bilge pump and carpet on the deck.I said to Cheryl "load up let's take it to the lake" needless to say I didn't have to say it twice.We put it at the Coffee pot. The wind was blowin out of the NE at about 15mph.Which packed the water in on the south shore to about 2 feet deep.I eased the boat out heading east ,threw some juice to the motor.I was quite suprised when it went on plane with little effort.GPS was tracking us reading 20mph. After a mile or Two and checkin to make sure the ole motor was feeling comfortable ,I eased out into the deep water .\
The lake was a little rough ,not white capping but it was puttin up about a foot and a half swales.It was a smooth ride going cross wind just on plane.I then proceeded to go with the wind ,going up than down the swales still on plane at 20 mph waiting for water to spray over the bow of the boat ,no grass rake on this hull yet,the water never came.Cheryl said later on the way home that if she would have gotten wet it would have been her last ride till a rake was installed.She can stand a lot of things ,gettin wet ain't one of em.
Took the boat back to shallow water up into where the eel grass grows,put her into the wind and and l let her breath.GPS registered 48.8 with no sign of porpoising.I did notice that the boat handled real well cept when I turned it a little it wanted to turn more .It didn't act like it was on it's nose cept when i turned .I brought it around with the wind and gave the horse's there head .A very smooth ride ,GPS showed 55.4. With that we headed back and put her on the trailer.I do believe that I'll slide the fuel tank back a little bit to see if it helps.I realy thought it would porpoise.On the old new hull I had the center line of the belt drive mounting bolt set 14" in front of the transom and it porpoised.This time I set it at 18" . All in all I'm very well pleased with the maiden voyage