crack on cockpit coaming (sp?)
Moderators: kenneth, sbroam, TheKrikkitWars, Mike W., Sir Adam, KNeal, PAC, adamin
crack on cockpit coaming (sp?)
I've got an old Dagger Cascade I'm planning to take down the Grand Canyon, but it has about a six inch open crack on the inside of the cockpit coaming. I drilled out 1/4 inch holes on each end to stop if from propogating, but I'm wondering if I have any better alternative than tape to keep water out.
Any thoughts?
I assume it's cross-linked polyethylene.
thanks
Aargh
Any thoughts?
I assume it's cross-linked polyethylene.
thanks
Aargh
- sbroam
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I would suggest welding, at the same time embedding stainless steal mesh. PAC has welded crosslink with good results. My results were not so good...
If you have to go with tape I would suggest Gorilla Tape (as in Gorilla Glue) - that stuff is, as the kids say, "tha bomb".
If you have to go with tape I would suggest Gorilla Tape (as in Gorilla Glue) - that stuff is, as the kids say, "tha bomb".
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here's something from another board, looks pretty bomber
http://rickspix.smugmug.com/gallery/736 ... 3775_LKEo2
http://rickspix.smugmug.com/gallery/736 ... 3775_LKEo2
Joe
Can you post a photo or two? Tha might help the boat doctors on the site!
I have welded, with success, crosslink but its a though go and its more to do with luck than being good.
Here is a link to the process Scott and I have used.... this was my first shot at it so it was very rough. Over time the quality improved.
http://www.geocities.com/paulcline2002/ Getting the mesh to embed properly is key to strenght.
Since your taking it on the Grand - if the welding works - I'd back it up with some vynal mastic (that stuff works! and is a good back up)! Pack some extra in the kit bag too just in case.
Also what was the cause of the crack pure stress or is it age related. Hate to be stuck on a run with an boat that has a history of imploding! My $.01.
PS: How's the Viper?
I have welded, with success, crosslink but its a though go and its more to do with luck than being good.
Here is a link to the process Scott and I have used.... this was my first shot at it so it was very rough. Over time the quality improved.
http://www.geocities.com/paulcline2002/ Getting the mesh to embed properly is key to strenght.
Since your taking it on the Grand - if the welding works - I'd back it up with some vynal mastic (that stuff works! and is a good back up)! Pack some extra in the kit bag too just in case.
Also what was the cause of the crack pure stress or is it age related. Hate to be stuck on a run with an boat that has a history of imploding! My $.01.
PS: How's the Viper?
Paul C.
Cboats Moderator
Official TOG Member (Team Old Guy)!
Cboats Moderator
Official TOG Member (Team Old Guy)!
thanks
Thanks for the tips. The Vinyl Mastic sounds like my kind of repair -- a step up from duct tape.
I'm not sure of how the crack got started. I think someone pushed down on that part of the coaming getting in or out of the boat. The rest of it feels pretty solid so I'm not too concerned about the boat falling apart (boy that would suck wouldn't it? Hard to get out of the canyon once yer in there).
Incidentally if anyone has any air bags to fit this boat, I could use a couple. I don't usually use bags but in this case...
My plan is to ship the boat to Flagstaff and then, after the trip, give it to my nephew who lives there.
Last time I was in my Atom and the smaller volume and pivotable rear caused me some problems in the runouts from the rapids.
PAC, the Viper is great. My 6-year old daughter has claimed it to be her boat when she is big enough to paddle (based on the fact it has a little pink in the paint job). Thanks again for a sweet boat.
Aargh!
I'm not sure of how the crack got started. I think someone pushed down on that part of the coaming getting in or out of the boat. The rest of it feels pretty solid so I'm not too concerned about the boat falling apart (boy that would suck wouldn't it? Hard to get out of the canyon once yer in there).
Incidentally if anyone has any air bags to fit this boat, I could use a couple. I don't usually use bags but in this case...
My plan is to ship the boat to Flagstaff and then, after the trip, give it to my nephew who lives there.
Last time I was in my Atom and the smaller volume and pivotable rear caused me some problems in the runouts from the rapids.
PAC, the Viper is great. My 6-year old daughter has claimed it to be her boat when she is big enough to paddle (based on the fact it has a little pink in the paint job). Thanks again for a sweet boat.
Aargh!
- the great gonzo
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A buddy of mine had the same problem on his, and he ended up stitching his boat up. He drilled the end of the crack, then he drilled 2 rows of holes alon the crack, one above, one below, and then he 'stitched' it up. I think he used surgical stainless steel wire or something similar.
Everything was then sealed up with Marine Goop. That was maybe 10 years ago and he still paddles the boat once in a while.
TGG!
Everything was then sealed up with Marine Goop. That was maybe 10 years ago and he still paddles the boat once in a while.
TGG!
Everyone must believe in something. I believe I'll go canoeing - Henry David Thoreau
Plastic welding
Mark Jones in Christiansburg can plastic weld x-link or linear.
eddytrn@i-plus.net
eddytrn@i-plus.net
explain please
Cheajack, what does it mean, to "blue flame"? And do you think I could get that G-flex from Davey Hearn's outfit?
- sbroam
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By "blue flame" I think he means to take a propane torch to it, just lightly - it's supposed to ionize (?) the surface. I've seen that recommended as a surface prep before welding or trying to bond something to crosslink - including the instructions for an Old Town repair kit for one of their ABS canoes.
I have seen a mastic repair hold up very well. The first time I saw it was when a neighbor in the HVAC business used it to fix a crack in his kayak. It was right under the seat so you know it got stressed. It was water tight for him for a couple of years of casual use - for all I know, it still is.
I have seen a mastic repair hold up very well. The first time I saw it was when a neighbor in the HVAC business used it to fix a crack in his kayak. It was right under the seat so you know it got stressed. It was water tight for him for a couple of years of casual use - for all I know, it still is.
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aargh, you can get the 4 oz tubes of G-flex from johnrsweet.com, now in the hands of Davey and Jennifer Hearn. Also boat chains like West Marine carry it.
However, I'm not optimistic about G-flex contributing to the repair unless the area is flamed and some Kevlar or polyester cloth is incorporated, crossing the crack inside the boat.
I hate to say it, but is this boat a good risk for the Canyon in its aged state? Will raft support be able to carry the Cascade if the cockpit rim rips out to a greater extent?
The Canyon is one of those places where poly isn't necessarily an advantage. One wouldn't be hitting many rocks, and composite boats are easier to repair.
However, I'm not optimistic about G-flex contributing to the repair unless the area is flamed and some Kevlar or polyester cloth is incorporated, crossing the crack inside the boat.
I hate to say it, but is this boat a good risk for the Canyon in its aged state? Will raft support be able to carry the Cascade if the cockpit rim rips out to a greater extent?
The Canyon is one of those places where poly isn't necessarily an advantage. One wouldn't be hitting many rocks, and composite boats are easier to repair.
it is a bit of a risk
hmmm, Ezwater, I hear ya. But my composite boats are either old too, or too squirty, or both.
The Atom would be my strongest boat, and I did survive in it last time, but as I said the low volume, edgy stern gave me some problems last time.
Maybe we could leave the cascade in there, high up in the rocks, like that metal boat at mile 180 (or wherever it was).
(just kidding)
The Atom would be my strongest boat, and I did survive in it last time, but as I said the low volume, edgy stern gave me some problems last time.
Maybe we could leave the cascade in there, high up in the rocks, like that metal boat at mile 180 (or wherever it was).
(just kidding)