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#1
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Rebuilding Trimaran
I am new to this group and would like get some feedback on my rebuild
project. I have a 25ft Searunner Tri.The starboard amass is bad and I ma rebuilding it. The ply has delaminated to the point the really is no ply in places. My first thought was to soak the ply with Dr Rot and put plastic sheets over that with pressure against it to resecure the ply layers. Upon further study, it looks like I will remove all rotten ply, and lap in new sections. I decided this after finding some areas the ply had come loose from the ribbing. Looks like about 30% of the ply will be replaced. The bilge areas, bow and stern are all great. No sections of rotten ply are so close as to allow any bulkheads to move, so shape should stay fine. Now the comment area. What would you recommend to coat the outside with once I've got the new ply on? I plan to sand all the boat and coat everything the same. Also I am missing the rudder, anyone know the specs for a Searunner rudder. Finally, anyone want to come help, or maybe do this project for me- Just kidding. I'm really looking forward to when it's done. I hope to get a webpage going with picture of the progress, if anyone would be interested. Wish me luck. Robert -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#2
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Rebuilding Trimaran
I'd recommend coating both sides of the plywood with epoxy before
you even start cutting. Where you're going to be doing adhesive bonding between ribs and ply, make sure you sand the epxoy to give it some tooth before bonding. Note that if the original construction had glass over ply, then you should add glass to your construction as well. After the boat is back together again, sand with 150 grit, fair with epoxy bog and paint with the paint of your choice. Also, keep in mind that your delamination problem probably started with the edge of the ply panels getting wet - this would be a good place for you to coat with epoxy as well. If you can't find the original designer (Jim Brown, I think, or maybe John Marples), then you could contact Kurt Hughes - he'd probably be able to give you plans for an appropriate rudder. By the way, Roger Taylor did a series of books (Good Boats, More Good Boats, Still More Good Boats, and Even More Good Boats), one of which had an article about a SeaRunner. You might be able to find one of these at the library or through interlibrary loan. There may be some clues as to rudder construction for you. The SeaRunners were pretty simply built boats, so the reduced drawings may be enough for you to get close enough. Matt "Just Us" wrote in message ... I am new to this group and would like get some feedback on my rebuild project. I have a 25ft Searunner Tri.The starboard amass is bad and I ma rebuilding it. The ply has delaminated to the point the really is no ply in places. Looks like about 30% of the ply will be replaced. The bilge areas, bow and stern are all great. No sections of rotten ply are so close as to allow any bulkheads to move, so shape should stay fine. Now the comment area. What would you recommend to coat the outside with once I've got the new ply on? I plan to sand all the boat and coat everything the same. Also I am missing the rudder, anyone know the specs for a Searunner rudder. |
#3
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Rebuilding Trimaran
the curvature of the hull comes from bending long pieces of plywood over
the frames. repairing with small pieces may not reproduce the same radius of curvature. there may be techniques, such as auxilliary framing or laminating thinner plywood, which will put curvaure in patches. "Just Us" ) writes: I am new to this group and would like get some feedback on my rebuild project. I have a 25ft Searunner Tri.The starboard amass is bad and I ma rebuilding it. The ply has delaminated to the point the really is no ply in places. My first thought was to soak the ply with Dr Rot and put plastic sheets over that with pressure against it to resecure the ply layers. Upon further study, it looks like I will remove all rotten ply, and lap in new sections. I decided this after finding some areas the ply had come loose from the ribbing. Looks like about 30% of the ply will be replaced. The bilge areas, bow and stern are all great. No sections of rotten ply are so close as to allow any bulkheads to move, so shape should stay fine. Now the comment area. What would you recommend to coat the outside with once I've got the new ply on? I plan to sand all the boat and coat everything the same. Also I am missing the rudder, anyone know the specs for a Searunner rudder. Finally, anyone want to come help, or maybe do this project for me- Just kidding. I'm really looking forward to when it's done. I hope to get a webpage going with picture of the progress, if anyone would be interested. Wish me luck. Robert -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- -- ------------------------------------------------------------------------------ William R Watt National Capital FreeNet Ottawa's free community network homepage: www.ncf.ca/~ag384/top.htm warning: non-freenet email must have "notspam" in subject or it's returned |
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