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  1. #1

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    more hull repairs questions

    ok everyone..i know there are alot of threads about this but just wondering about fixing the bottom of my 1996 slt 780 and how to match the paint and what type of filler and paint to use???

    Also if i need to flip it over in ther garage how i would do this...and are there any steps that i would need to take first before flipping the ski other then draining the gas and oil??


  2. #2
    ShaneG's Avatar
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    I just did mine this past weekend and used these two products. The paint is about $40 for a quart. It says you can apply with a brush or roller. I didn't thin it and the roller I wasn't thrilled about, smoothed it out with the brush and it worked really well. Would even be nicer if sprayed, but over all very nice shine and no brush strokes visable. The only issue is the super white is a lot brighter than the original so I just did the very bottom and not the sides. I just wanted to repair the grooves from beaching it and to true up the hull by long board sanding it.
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  3. #3
    Matrix 200 suparoo's Avatar
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    Just finished a major repair on the bottom of my Matrix (dont ask) Here's what I did.
    Removed the exhaust pipes from the heads just in case of any water trapped somewhere.
    Blocked off the vents for the oil and fuel but didn't bother draining them as they weren't full. Disconnected the battery but didn't remove it "sealed type"
    Tied the front toe hook to the roof with a strop and put a second strop around the bottom at the back. With a couple of people we carefully rolled it over using the back one as a sling and the front one as a pivot. (watch the back one doesnt go to far back and support the sponson's when its at 90 degress.)
    Then lowered it onto a trolley on the gunwhals.
    Had a look in the service manual which stated that polyester resin is the flavour that it was built from. This is very important because polyester and expoxy are very different and can only be used together in limited ways so always stick to the product it was manufactured from.
    I then ground out the damge until its was back to good glass plus a little bit more then gave it a really good taper on the sides to hold onto. It had quite bad seperation between the inner and outer hulls so poured some resin in between the two layers when I started laying up.
    Laid the resin and matting in as per instructions. Blocked back using the longest boards and pipes to get the shape as I could.
    Rolled on the gelcoat using a 4" wide roller. Then blocked back the gelcoat (not shown) colour match was bad but its only on the very bottom. Needed to add some black pigment to the white gelcoat.
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  4. #4
    Matrix 200 suparoo's Avatar
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    pt2
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  5. #5
    seaobin's Avatar
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    looks great

  6. #6
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by suparoo View Post
    ...It had quite bad separation between the inner and outer hulls...
    What do you mean by this?
    Was the factory foam not completely filling the space between the inner and outer hulls?
    Or was this separation caused by your damage/repair?

  7. #7
    Matrix 200 suparoo's Avatar
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    If you have a look at the first 3 pics you can see towards the front of the craft a destinct line line where the inner layer and the outer layer have seperated when I pushed down on the inner layer it pushed the inside of the hull away from the outside and you could stick a steel rule into the foam filled void both left and right sides of the craft. I suspect it was caused by the hit it recieved to the bottom.

  8. #8
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by suparoo View Post
    Just finished a major repair on the bottom of my Matrix (don't ask)...
    I'm asking.

    How did you manage to do that much damage?

  9. #9
    Matrix 200 suparoo's Avatar
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    (Without looking like a complete noody) About 20 of us boated a large river in the south island called the Buller it was suposed to have plenty of water in it but about 1/4 of the way into a 70 mile round trip day there was a rock about the size of a small car 6 inches below the surface which had a very flat top on it ramping up slightly in the direction we were going, I hit it at about 45 Mph catching the hull just in front of the ride plate. The ski went airbourne throwing me off and consequentally doing the damage. Didn't hole it just turned the glass to soft stuff.

  10. #10
    BBCaprice's Avatar
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    Quote Originally Posted by suparoo View Post
    (Without looking like a complete noody) About 20 of us boated a large river in the south island called the Buller it was suposed to have plenty of water in it but about 1/4 of the way into a 70 mile round trip day there was a rock about the size of a small car 6 inches below the surface which had a very flat top on it ramping up slightly in the direction we were going, I hit it at about 45 Mph catching the hull just in front of the ride plate. The ski went airbourne throwing me off and consequentally doing the damage. Didn't hole it just turned the glass to soft stuff.
    Nice job, Superoo; I mean the glass repair........

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