Author Topic: I've split the hull on my Glastron CVX16s HELP!!!  (Read 9946 times)

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Offline UKMike

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I've split the hull on my Glastron CVX16s HELP!!!
« on: July 04, 2018, 12:36:05 PM »
 :(

Hi all,

I went out the other day when it was nice and calm and hot hot hot, I was boing about 50mph on a plane and I caught a rouge wave which hit my starboard side, bang it went... Anyway I got back to the dock later that day and I drove the boat up into the trailer which was difficult as the water was at low tide and when I got to cleaning the boat I could see a long split 4 feet long in the hull. After further investigation I can see that it's not just Gel coat fracture as I can see a split in the glass. It runs parallel with one of the protruding lines on V shaped the hull. Does anyone know how the hulls are built and if this is a normal place for fractures?

Also, any advice on how I can deal with this?

One thing I should add is that it may have been caused by the new trailer I purchased as it has 2 sets of rear rollers at the rear on each side but the old trailer had a platform to support the weight of the engine on the trailer, the new trailer doesn't have this and when I drive the boat up onto the trailer the boat does pivot on the rollers at the point on where I have the split and it is exactly running in the centre of the rollers...     

Offline nes-cv23

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #1 on: July 04, 2018, 01:14:49 PM »
Like always..... it’s a lot easier to post pictures
84 ssv-151, 76 cvx-16 ss, 77cvx-20 jet, 90 CSS-19, 78 cv-23, 77 gt-150, 2-78 cvx-16, 79cvx-16, 79 cvz-18,  73 cv-16, 74 cv-18, 89 219 Futura, 76 gt-150 jet, 79 cv-23, 02 Gx-225,  1980 intimidator = done!.. 79 hvp175   Now  done?

Offline Plugcheck

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #2 on: July 04, 2018, 01:24:07 PM »
I'm having a tough time visualizing the issue.  Good clear pictures are needed to help diagnose the problem.  Sounds maybe like a cracked transom?
Michael
1979 CVZ-18 388 CI Vortec Mouse
1980 CVX-16SS 140 Mercruiser
1979 CVX-16 Johnson 175
2002 Bennington 2275CC 90 Mercury
1985 Intimidator project
1989 Lowe 200 Redneck fishin Toon
2001 Godfrey Sweetwater pontoon 115 Rude

Offline UKMike

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #3 on: July 04, 2018, 01:29:26 PM »
Sadly I don't have any photos currently and the boat is 100 miles away. its a split on the first long runner from the keel, it starts about 6 inches from the transom and runs along the length of the boat for 4 feet, from the stern to the bow direction, it runs approx. 2 between the first runner and the keel. Do you know of any links where I can see a hull of a CVX16 upside down and I can show you exactly where it is.

Thanks again for the replys :)

Offline Hyperacme

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #4 on: July 04, 2018, 01:31:43 PM »
Look here for some CVX / Metric hull pictures …
http://forum.cgoamn.com/index.php?topic=7551.0

Offline UKMike

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #5 on: July 04, 2018, 01:35:51 PM »
Thanks Gregg,

Hope all is well?

I'll take a look now.

Mike

Offline UKMike

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #6 on: July 04, 2018, 01:46:09 PM »
OK this is an idea of where the split is and I hope no one minds me using someone else's photo to show this...

I have added the red line to show where it runs.

Mike

Offline Plugcheck

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #7 on: July 04, 2018, 02:17:03 PM »
I doubt Doug will mind.  Never seen a hull crack along a strake, that is generally a very solid area.  Maybe a delamination?  I doubt an easy repair is possible, probably involve stringer and floor work.   Is it just a crack or a split?  Is it taking on water? 
Michael
1979 CVZ-18 388 CI Vortec Mouse
1980 CVX-16SS 140 Mercruiser
1979 CVX-16 Johnson 175
2002 Bennington 2275CC 90 Mercury
1985 Intimidator project
1989 Lowe 200 Redneck fishin Toon
2001 Godfrey Sweetwater pontoon 115 Rude

Offline UKMike

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #8 on: July 04, 2018, 02:26:32 PM »
I put a new battery unit in last year with a much heavier battery and that sits right about the area of the split, I call it a split as there is approx. a 1mm gap at the worst point and it feathers off to nothing, I don't think it's taking on water as the inside of the boat was dry but I think the boat has had glass work previously on the inside as there is no wood at all in the boat as one would expect, I have a feeling work was done before I bought the boat 6 years ago and it looks like they removed the flooring and re-glassed the whole inside of the boat, or at least where the flooring should be. It's hard to tell unless I tear out the carpet, but I say this as the carpet seems to show depressions where the strakes are.

Offline UKMike

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #9 on: July 04, 2018, 02:33:11 PM »
I'll get some photos this coming weekend to show you what I see, I'm worried this could be a real risk and lead to structural failure if I push the boat to the limit or hit another bow breaker. But I'd have more concern if the split was across the keel, making the boat more likely to split in half on hard impact...

It may just be cosmetic but I can't take the chance and I'm looking at buying a new Tilt/Trim unit and lower unit, so around $3000 and I don't want to do that if the hull is not fixable....

Mike

Offline Plugcheck

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #10 on: July 04, 2018, 07:10:53 PM »
For $3000 you might just get another CVX.  Plenty have been rebuilt with composite materials, but never heard of just eliminating the wood. The CVX hulls require the stringers and floor components to achieve the strength required.
Michael
1979 CVZ-18 388 CI Vortec Mouse
1980 CVX-16SS 140 Mercruiser
1979 CVX-16 Johnson 175
2002 Bennington 2275CC 90 Mercury
1985 Intimidator project
1989 Lowe 200 Redneck fishin Toon
2001 Godfrey Sweetwater pontoon 115 Rude

Offline UKMike

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #11 on: July 05, 2018, 03:42:40 AM »
You can't buy them over here in the UK, they are like gold dust, hence the cost of the parts!

I guess I need to strip out the carpet and take a look to see what's there... If no wood has been used then maybe that's why I have the split. It seems like it has 2 skins and that would explain no wood being used, no water ingress but a split in the hull.

Offline Plugcheck

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #12 on: July 05, 2018, 07:31:59 AM »
I have seen hull damage caused by hitting an underwater obstacle, but never from flexing.  If there are no stringers to support the hull, then I could see a stress crack forming.   Given that Glastrons are hard to come by over there, seems to establish you want to repair your craft.   Do you have a place to do the repairs over the winter?  The reason I ask is this, could you get by with a simple repair and enjoy your boat the rest of the short season? (Maybe taking it a bit easier?) Then complete the major repairs during off season.   
Michael
1979 CVZ-18 388 CI Vortec Mouse
1980 CVX-16SS 140 Mercruiser
1979 CVX-16 Johnson 175
2002 Bennington 2275CC 90 Mercury
1985 Intimidator project
1989 Lowe 200 Redneck fishin Toon
2001 Godfrey Sweetwater pontoon 115 Rude

Offline C512Jim

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #13 on: July 05, 2018, 07:50:46 AM »
Hmmm was going to try all seacast to replace bad wood on my 86 cvx18 but having second thoughts now.  The videos show them pouring in where the wood was removed.  Sure would be great to hear from someone that has done that with a glastron and how it worked out.  Looking forward to hearing more about your investigation on your 16'.

Offline carlsoncvx18

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #14 on: July 05, 2018, 08:32:09 AM »
What kind of trailer do you have under it?

Bunk or roller. 

A member over here split his hull open long crack from his trailer and roller positions.
1987 CVX18.     1968 Glastron alpha sail boat
1977 GT150
1986 CV23
1984 Intimiadator
1981 CV27
1969 V-180 fundeck

Offline UKMike

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #15 on: July 05, 2018, 01:26:53 PM »
Hi all,

The new trailer is a roller trailer, the old trailer was a bunk so with the weight of the engine at the stern on 4 rollers each side I need to question if this is partly the cause. It just so happens that the split is right in the middle of the rollers and that cant be a coincidence, and when I drive the boat up onto the trailer at low tide the angle means there is a lot of pressure on that area until all 4 rollers are in contact, as the rollers pivot.

If I can repair it for the rest of the season it would be really helpful, I purchased a west systems fiberglass kit but haven't yet used it as wanted your thoughts first. If I do deal with this over the winter (which I can do) I can imagine I will need to strip the whole boat down, remove the top half, turn upside down and possible cut out a patch of glass, I'm not sure the best way to deal with this so any suggestions are really appreciated. But don't tell me to throw my baby away :) I love her :)   

Offline Hyperacme

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #16 on: July 05, 2018, 02:42:37 PM »
So it's about here ...

Offline UKMike

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #17 on: July 05, 2018, 04:06:32 PM »
Hi Gregg,

Yes exactly but on the other side.

Offline UKMike

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #18 on: July 05, 2018, 04:20:49 PM »
Please see the red line where it shows the line of the crack/split, it is between the rollers. Sorry but I don't have a better photo until the coming weekend.

Offline UKMike

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Re: I've split the hull on my Glastron CVX16s HELP!!!
« Reply #19 on: July 05, 2018, 04:22:51 PM »
You need to zoom in to see the red line :)