Boat ride
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Boat ride

  1. #1
    Senior Member CK7684's Avatar
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    Default Boat ride

    "On the rear wandering, a jet at speed may/should have a slightly "riding on grease" feel of not being very well hooked to the water. Kind of a "speed on the edge of control" thing."

    Regarding this comment in another thread...I just got done re-doing my boat after it being off the water for about 5 years. It used to have that "riding on grease" feeling, but now I think it's riding a bit more wet. The main changes are that I have aluminum heads on the engine, and the new seat frames are made from 3/4" plywood instead of 1/2" plywood. Could these affect how it rides that much?

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    Just Me snoc653's Avatar
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    Or the hull could have settled some during the time it sat on the trailer. Every little bit of hook affects how the boat rides. Was the motor in it our out of it? How did it sit on the bunks? Was it covered or uncovered? Exposed to the elements or not? Lots of things could affect the change to the boat over a period of non-use. JMHO

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    mo balls than $cents$ IMPATIENT 1's Avatar
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    Quote Originally Posted by snoc653 View Post
    Or the hull could have settled some during the time it sat on the trailer. Every little bit of hook affects how the boat rides. Was the motor in it our out of it? How did it sit on the bunks? Was it covered or uncovered? Exposed to the elements or not? Lots of things could affect the change to the boat over a period of non-use. JMHO
    good answer. you could've changed the center of gravity on the boat to changing the weight around like you did

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    Senior Member CK7684's Avatar
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    It sat exposed for about a year before being garaged. It sits on the trailer bunks pretty nice. It did have the engine in it. I suppose there isnt really a way to check if things have shifted without knowing what it was before. My upholstery guy "upgraded" the plywood without telling me until he was finished. Think that added much weight? It had a much "lighter" feel moving across the water before than it does now...

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    Senior Member LuckyDaze's Avatar
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    If it sat outside exposed the sub floor may be hiding some water?

    ~Brian

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    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    The wood increase up front COULD be the culprit. Along with the weight, consider the LOCATION of the weight.

    Aluminum heads and heavier seats, you made the boat lighter I am sure.

    Problem is, the boat "hinges" for lack of a better term, at the back. Weight gain/loss 2 feet in front of that pivot area changes CG little, even a substantial loss, as far as boat attitude is concerned.

    Weight gain/loss 9 or 10 feet away from the pivot, even relatively minor changes, can have a dramatic effect on the ride attitude.

    Consider the leverage of a short wrench vs. that of a 6-foot cheater pipe.
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    slower than you Suckin-n-Pumpin's Avatar
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    not a dig but have you gained weight over the years?

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    Senior Member CK7684's Avatar
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    LOL, I've only put on about 10-15 lbs over the last 10 years. You would think with that kind of weight changes, it would have been affected by different passengers riding in it as well...

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    "Try it Now!" Tahiti Boss21's Avatar
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    Quote Originally Posted by LuckyDaze View Post
    If it sat outside exposed the sub floor may be hiding some water?

    ~Brian
    I always wonder if my boat has this problem...how do you know without cutting a hole in the floor? my floor is still very solid.
    1992 Eliminator Daytona 21'

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    Just Me snoc653's Avatar
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    Quote Originally Posted by CK7684 View Post
    LOL, I've only put on about 10-15 lbs over the last 10 years. You would think with that kind of weight changes, it would have been affected by different passengers riding in it as well...
    If putting a second passenger in the front seat didn't change the way the boat rode before then the extra weight of the wood shouldn't have changed it with just you in the boat. I'd go back and start looking at the other options.

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    Senior Member CK7684's Avatar
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    Maybe this should be in it's own thread, but what's the best way to measure hook? I took a 3ft straight edge and put it across the strakes and the bottom in different areas and the deepest I could find was less then 1/4" about 8" in from the back...is this about normal?

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    Senior Member ol guy's Avatar
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    Quote Originally Posted by CK7684 View Post
    Maybe this should be in it's own thread, but what's the best way to measure hook? I took a 3ft straight edge and put it across the strakes and the bottom in different areas and the deepest I could find was less then 1/4" about 8" in from the back...is this about normal?
    CK, 1/4 is a bit! Normally 1/8 inch is ALMOST acceptable. The greasey felling you are going thru is known as bow steer. A common problem with jet boats that get thrown more power and not lifting the bow of the boat. You have and have driven the boat so take a look at the place it cuts water then study the chimes in the bottom and see how they follow the contour of the boat and then you can figure out why the boat wants to wander. If the bottom is cutting water forward of the STRAIGHT chimes then you get BOW STEER. M

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    Senior Member ol guy's Avatar
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    Quote Originally Posted by LuckyDaze View Post
    If it sat outside exposed the sub floor may be hiding some water?

    ~Brian
    CK, Also an excellent point here! If the boat sat in the elements and bow down you could have alot of water being held in the foam under the sub-floor. That foam will hold water, and alot of it. Tilt the boat up as high as you can and make sure the drain holes in the bilge are clear and open. If not sure, stuff a screwdriver in and give it alittle ream job. GET THE FORWARD BALLAST OUT OF THE BOAT. Again a great thought! Good shot L.D. M

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    Senior Member CK7684's Avatar
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    I mean that I am not getting that "sliding on grease" feel to it like I used to. It feels like it riding a lot more wet. I'm going to check the floor also and probly dig out the foam up front. That foam isnt wet, but under the floor could be. That's about the only thing I didnt replace was the floor and carpet.

    I'm not getting any bow steer or anything like that, it just feels slightly different.

    So am I measuring for hook correctly? I was just eyeballin' it. It looks like less than 1/4", but I guess I should measure it and see exactly what it is...

    Thanks for the replies!!

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