Robbieandrew Posted December 11, 2012 Report Share Posted December 11, 2012 So, half way through a beautiful day of sailing on my calypso 16 i heard a pop, then a few more pops and soon realised that a few of the rivits on my trampoline track had come undone. Pretty stupid of me to have confidence in some 30 year old pop rivits, but anyway, what I want to know now is the best way to fix them. I've never been a fan of rivits, I'm thinking it would be best to use some high quality marine grade stainless steel screws to hold it back in place, some that are a bit fatter than the pre existing holes, but i'm not exactly sure if that would be best. Does any one have any other suggestions? Link to comment Share on other sites More sharing options...
hills Posted December 11, 2012 Report Share Posted December 11, 2012 I'd just put some glue in the holes so that the old rivets won't rattle and then re-rivet it half way between the existing rivets. alternatively someone was selling a pair of 16' calypso hulls recently for $200, but I can't find them now. If they're still for sale just replace the hull. EDIT: Here's the advert, unfortunately they're in QLD though. http://www.muamat.com/classifieds/754/posts/2_Vehicles/15_Boats/5519777__calypso_catamaran_hulls_and_rudders_5metre.html Link to comment Share on other sites More sharing options...
Hawky Posted December 11, 2012 Report Share Posted December 11, 2012 Thats it Mate way to go new holes . Or if you dont wont to see old holes just get some new track and stager the new rivets. Cheers Link to comment Share on other sites More sharing options...
Robbieandrew Posted December 11, 2012 Author Report Share Posted December 11, 2012 Haha no way am I buying new hulls, way too expensive. Do you think I could rivit into the existing holes? I'm not sure if drilling new ones would weaken the hull too much... Link to comment Share on other sites More sharing options...
darcy1945 Posted December 11, 2012 Report Share Posted December 11, 2012 The easiest way, fill the existing holes with bog, re drill between existing holes, use 3/16" alloy rivets, (Monel or stainless will crack the glass as they pull up), that are 3/16" to 1/4" longer than the depth of the new hole. Use Sikaflex as a sealer adhesive on the track when re riveting. Using "Duralac" on the rivets will double their corrosion free life. Link to comment Share on other sites More sharing options...
Robbieandrew Posted December 11, 2012 Author Report Share Posted December 11, 2012 Thanks for the suggestions! Sounds good. A few Questions 1. Would something like "Sellys Knead it" work the same as Bog? (I'm familiar with using knead it where as Bog is new to me) 2. Drilling new holes between the existing ones shouldn't weaken the hull too much? 3. Would it be ok to use the existing holes at all? eg at each end? Or would that not be advisable Cheers Again Link to comment Share on other sites More sharing options...
darcy1945 Posted December 11, 2012 Report Share Posted December 11, 2012 Bog is f/glass resin with a filler, like q cells, added. Knead it, will work. Drilling extra holes shouldn't effect the strength of the hulls in any way. Use the original holes if you can drill them cleanly (you need to punch out the mandrel of the old rivet then your drill will run through the centre) Link to comment Share on other sites More sharing options...
Robbieandrew Posted December 12, 2012 Author Report Share Posted December 12, 2012 Alright, thanks for all the help! A few hours work ahead and I should be back on the water next week! Link to comment Share on other sites More sharing options...
Paul124ac Posted December 12, 2012 Report Share Posted December 12, 2012 Fibreglass rivets would be better, also known as Peel rivets, they don't stress the 'glass rather they peel back like a banana as the name suggests. I've used ally large head rivets on the Hydra as I couldnt get peels locally unless I bought 1000, after now fixing 4 tramp tracks I wish I hada bought the damn box. Link to comment Share on other sites More sharing options...
Robbieandrew Posted December 13, 2012 Author Report Share Posted December 13, 2012 So one more thing I wanted to ask, As I can't get washers on the inside of the hulls or anything, I was thinking of using a slightly larger rivet (3/16") so the surface area in contact with the boat would be bigger meaning less pressure etc. However, this would mean drilling both the tramp track and holes in the hull a bit bigger. Is that a really bad Idea? Link to comment Share on other sites More sharing options...
darcy1945 Posted December 13, 2012 Report Share Posted December 13, 2012 Not a problem, use a new/sharp drill. Link to comment Share on other sites More sharing options...
Robbieandrew Posted December 14, 2012 Author Report Share Posted December 14, 2012 Did one side today, seems pretty good, only problem was slicing my hand open with the rivet gun when one of the rivets snapped and it quickly snapped shut. Guess I know for the future now -_- Link to comment Share on other sites More sharing options...
hills Posted December 14, 2012 Report Share Posted December 14, 2012 Yep, I've chipped a bone in my finger that way. :( Link to comment Share on other sites More sharing options...
Robbieandrew Posted December 14, 2012 Author Report Share Posted December 14, 2012 Yikes! tell me things like that AFTER i've done the other side =P Link to comment Share on other sites More sharing options...
hills Posted December 14, 2012 Report Share Posted December 14, 2012 Lol sorry. I'm having it operated on, on 7/1/13. :( ... but that probably doesn't help, huh? Try putting a couple of metal pipes over each handle to give more leverage. Link to comment Share on other sites More sharing options...
knobblyoldjimbo Posted December 14, 2012 Report Share Posted December 14, 2012 Not at all good, hope it gets better. I did one side of my Maricat with the standard rivetter before driving around to Darcy's to borrow his concertina set. I've since bought one of my own, a chinese one for $20. Needed adjusting before it worked but just so much better, particularly for those long rivets. As they say "experience is what you get just after you needed it most" (then I found this! http://www.bored.com/findquotes/cate_11_Experience.html) Link to comment Share on other sites More sharing options...
Paul124ac Posted December 15, 2012 Report Share Posted December 15, 2012 I was going to add that riveting pliers are not the best for any rivet 3/16" or over, either use the concertina type or air riveters, seems I don't have to. If its any consolation I stuck a pozidrive bit thru my finger the other day when screwing trim back onto an old caravan, then later the same day I was putting the inside trim on and air nailed the end of my thumb, same hand. Beer fixed it. Mate down the road managed to put 2 75mm framing nails into his leg recently, don't use your thigh as a workbench for a framing gun. Link to comment Share on other sites More sharing options...
hills Posted December 15, 2012 Report Share Posted December 15, 2012 Lol, well so far with Doc's appointment, xrays, specialist appointment and pending operation my rivet pliers are going to have cost me over $750, so a concertina type would have been a great investment!! Link to comment Share on other sites More sharing options...
hills Posted January 19, 2013 Report Share Posted January 19, 2013 Just in case anyone needs convincing about purchasing a concertina riveter, here's what my finger looks like after surgery to fix my little riveting pliers mishap. :( Link to comment Share on other sites More sharing options...
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