Cracked Sea Doo challenger hull

[oops!]

Re: Cracked Sea Doo challenger hull

what the heck is going on there?

that is a really bad spot for the glass to fracture....im not sure what caused it.

you will need to grind away the surface coating......get down to the glass.

then with VE resin.....add layers of 1.5 csm.....the 1708....alternating.....and each layer growing in size to cover a larger area.....this will give a better grab to the hull...

fiber glass does not like to bend around corners......co you are going to have to do some tricky cutting of the glass....

in each sucessive layer.....i would cover the last glass joint....

(i know this sounds greek to you.....but you will get it....)

one wrap of csm over the stringer and one up the hull.....then the next layer....across the edges of the csm....then do the same with the 1708 but alternate so the joints are always covered by a layer over top.....

one thing......lets have a look at how the boat is on the trailer........it might be causing some stress issues with the hull right now....

that will need to get addressed before you can start glassing.

 

[oops!]

Re: Cracked Sea Doo challenger hull

click the link im my sig to read on how to glass.....the first 16 pages have the glassing instructions

 

[mazjag]

Re: Cracked Sea Doo challenger hull

Its not on a trailer..Its on tires on its side on the ground..I think what caused it was me...I just kinda drove the boat like a big jet ski including jumping big waves and now I`m paying the price.. I have 3 more joints that are partially cracked like that.. I did read that thread and I think I can handle that..Just didn`t know how the cloth CSM thing..thanks, Jason

 

[oops!]

Re: Cracked Sea Doo challenger hull

the toatal amount of cloth and matt is very little .....2 yds of each.


1.5 oz csm......and 1708 bi axe.

you are just cutting it all up into little sections....

you want to lay csm first.....and in between each 1708.....

with each sucessive layer.....cut the csm larger than the last. that way....each layer grabs farther on to the hull..each 1708....is the same size as the csm.....the 1708 will not touch the hull....just the csm will.

do all the repair areas at one time.....do you might be glassing for a few hours.

jumping the sea doo should not cause that....they are built for that....
if this was under warranty .....i would take it back.

after the hull is repairs form the inside.....we can worry about the out side and the cut out portions of the deck.
but this basic glassing job you are doing.....will pre-pair you for the next step.....so the learning curve will start here....

dont worry.....weve got your back.

 

[Yacht Dr.]

Re: Cracked Sea Doo challenger hull

Ok.. I still do not see the repair that we are looking at from the outside pics on any inside pics.

I see stringer system..but no inside of the hull at the moment. Unless I am missing something.

YD.

 

[mazjag]

Re: Cracked Sea Doo challenger hull

No, you are correct. The first one ft. of the strake has nothing behind it so I went into the storage compartment to see what was up..Thats when I found those cracked stringer junctions...I can see ,but I don`t have a pic from the inside of the strake...I`m still a little confused on that..It seems by looking at it in order to lay some glass I`m gonna have to cut through that stringer system to the outer skin. This is were I`m at with it..Don`t laugh as I have never done this.. If you look at the one pic of the inside of the stringer system you can see were I put the self tapping screws through it..Go ahead and let me have it...thx..Jason

 

[oops!]

Re: Cracked Sea Doo challenger hull

ve resin.....is Vinyl Ester resin.....its like a high grade resin.

west marine is really really spendy.

us comp (FOR THE TIME BEING......HINT....HINT... RESTO FREEKS) is the cheapest place right now.

 

[oops!]

Re: Cracked Sea Doo challenger hull

.I`m still a little confused on that..It seems by looking at it in order to lay some glass I`m gonna have to cut through that stringer system to the outer skin. This is were I`m at with it..Don`t laugh as I have never done this.]

lol....you are confuddeling me !

are you suggesting that the crack is in the area where the stringer /bulkhead meets the hull. and behind the 2 or 3 inch area of the junction?... or just all around it.....

the fiberglass inside IS the outside

 

[mazjag]

Re: Cracked Sea Doo challenger hull

Thanks opp, am I way off on my repair? I`m using the West System 105 which I know you don`t like epoxy but its idiot proof(I think) ...I honestly don`t care about some money as long as it will go again..

 

[mazjag]

Re: Cracked Sea Doo challenger hull

I`m a little lost so let me do it with a pic...see pic.. This isn`t the outer skin of the hull.. This is that inner liner part..Between this and the outer skin with the gelcoat is like 8-10 mm of foam. I would have to cut a large hole in it to glass it from the inside..that make more sense...it maybe me..thx..Jason

 

[Yacht Dr.]

Re: Cracked Sea Doo challenger hull

the fiberglass inside IS the outside

Not in this case my friend..

As I have been Saying .. you have 3 layers.

Deck
Stringer system
Hull

Until You grind out that Inner and Outer repair ( FACE to FACE ) your not there yet. .. Your only looking at the inner lam points of a stringer system and NOT at the Inside Hull of the boat.

Ok.. you have a hole in the bottom .. you cant see through the inside.. are you asking if your done grinding on the inside of the boat when you cant see a 2 foot(ish) repair ?

Your fixing the stringers and not the hull..

Two Different things.. Two different repairs..

YD.

PS. stick a small screwdriver from outside to inside.. can you see it ? great.. take pics and post them.

 

[mazjag]

Re: Cracked Sea Doo challenger hull

Yeah, I get it now after looking at several hundred times..I see how its built..I have to get to the inside more...Whats involved in putting a piece like this back in place? I have more stuff to cut out, but want to see how much is involved to repair it.. This stringer system seems to have a large amount of cracks for a boat that was made to thrash on..thx..jason

 

[Yacht Dr.]

Re: Cracked Sea Doo challenger hull

Repairing a deck cutout is easy.

Screw some cleats ( strips of wood screwed and 5200 or PBd to the deck and extending a few inches into the cutout hole ) around the cutout.

Put the cutout in the hole and grind a few inches around the seam. Glass/fill and fair/Spray ( or roll gel ) and buff if its a finished surface.

YD.

 

[mazjag]

Re: Cracked Sea Doo challenger hull

Thanks, I`ll cut more.lol...what do I add to the gelcote to give it that not slip rough finish? Jason

 

[Yacht Dr.]

Re: Cracked Sea Doo challenger hull

Thanks, I`ll cut more.lol...what do I add to the gelcote to give it that not slip rough finish? Jason

I didnt say any more Cutout lol .. talking about the last access pic of yours. Read it again ...

Cabosil + Gel mixed with a textured roller is the only way I have found to give you that Martha Stewart look in your finished gel.

YD.

 

[mazjag]

Re: Cracked Sea Doo challenger hull

I`m a little lost..I kinda got off on the wrong foot and didn`t want to go inside the hull..The more I have fixed the more I think I can do this..(with help!) and I`m going inside as suggested and understand the stringer system..Yes YD, I know I have 2 different repairs..I don`t understand what to do inside..Please look at the pics of the original crack and see what I did to tie it to the stringer system..I tied everything to that 90 degree edge in the stringer with epoxy and screws.What happens on the backside and what am I joining the outer shell to with cloth or mat.Look at the last pics where the screws are to locate my position in the hull..Where do I cut ? thx..jason

 

[Yacht Dr.]

Re: Cracked Sea Doo challenger hull

These are Very technical Repairs and I suggest you have it looked at by a Pro.

I really cant say any more about this repair..

Without hands/eyes on this project its really too hard to convey the proper procedures for a repair like this.

Please do not get me wrong.. I will hand it off to the more experienced members here....

YD.

 

[mazjag]

Re: Cracked Sea Doo challenger hull

No sweat YD, you guys have been great..At a certain point I have just have to do it.. Some of the advice is above my head(my fault) I`m gonna give it a college try and see what happens...I have a pattern to rebuild the strake like the other side using mat. Its coming together or it will fall off the boat.. I`ll post pics what I figured out to do with it..thanks for your input! Jason

 

[SS47]

Re: Cracked Sea Doo challenger hull

Mazjag, i may be wrong, but it looks like the boat was stored outside where it was cold enough to freeze, and apparently had water near the inside of the keel at the same time. This may be a manufacturing defect. Either way, the previous suggestion to "mold a form to the bottom side, and repairing from the inside is the best option. The stringers more than likely can be duplicated with a form matching the original. Form material could be anything from wood to cardboard, depending on the shape your attempting to duplicate. You can replace, rebuild any part of the boat that you may need to remove for the proper repair procedurs.If what i have suggested to you at this point seems useless, then at least pick up a copy of "the fiberglass boat repair manul" by Allan H.Vaitses. Between the book and the experts at your disposal here on Iboats, you'll be much more comfortable in "cutting away".

 

[mazjag]

Re: Cracked Sea Doo challenger hull

Maybe, this boat has a title from Ohio..As far as making a mold and the stringer..A little above my head. Kinda using common sense, West Systems book on repair, and youtube..I have watched like a 100 videos on it..Push or shove I will post some pics etc. of how it turned out. As it stands I already found another hull that needs engines and seats for 1200.00 if this doesn`t work..I don`t imagine it going anywhere anytime soon, but I`m gonna fix this boat I think ...Jason