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79SN Rebuild |
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Dbat 79SN 
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Joined: April-11-2011 Location: Appleton, WI Status: Offline Points: 13 |
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 Posted: February-10-2012 at 6:49pm |
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Yes, I am doing the floor as well. Thanks for the quick reply.
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Dave
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Jllogan
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Joined: May-18-2011 Location: canton, OH Status: Offline Points: 1728 |
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Posted: February-10-2012 at 7:08pm |
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seems that two gallons is about where most guys end up. That left me some do to the inspection panel in the back and the wood pieces up under the bow, I used every drop.
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Keeganino
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Joined: October-27-2009 Location: North Carolina Status: Offline Points: 2063 |
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Posted: February-10-2012 at 10:03pm |
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Yep go for the 2 gallon kit. The first coat soaks up a ton. Each successive coat will require less. I did 3 or 4 coats and. Y the last one will barely soak in at all. Then you know it is saturated.
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"working on these old boats may not be cost effective but as it shows its what it brings into your life that matters" -Roger
1973 Skier |
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: February-10-2012 at 10:17pm |
Dave, Have you been looking at the existing threads on stringer replacements? they are an excellent source for what's needed. The big variable will be the moisture content of the wood you are using. What is it? have you checked it with the moisture meter??? The drier it is, the more CPES is sucked in!! |
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Dbat 79SN
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Joined: April-11-2011 Location: Appleton, WI Status: Offline Points: 13 |
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Posted: February-28-2012 at 11:09pm |
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I've been reading threads and doing reserch on epoxy vs. polyester resins for stringer replacement and I just don't seem to find a clear answer. The original boat was done with polyester resin, but it appears that there is quite a bit of differing opinions on which one should be used. Can anyone clear this up for me?
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Dave
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79TiqueRebuild
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Joined: January-21-2009 Location: Kansas City, Mo Status: Offline Points: 238 |
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Posted: February-28-2012 at 11:23pm |
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David, From what I remember when doing the research for my 79 sn rebuild, is that polyester is hydroscopic. Water will penetrate it. I used epoxy and was pleased with the results. I'm sure some of the experts will chime in. I am just a hobbyist but I hope that this helps. Monty
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Gary S
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Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Posted: February-29-2012 at 12:41am |
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My little experence comes from having an attached garage,epoxy does not smell up the house and keeps everyone happy.
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Online Points: 21186 |
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Posted: February-29-2012 at 10:44am |
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Glass CC's were built with polyester resin until 1989. They were built with vinylester from '89-92 (AME4000). Since then, theyve used a vinyl/epoxy blend (AME5000).
Epoxy is the best of the 3 types- it does not absorb water. It is also the strongest, and its easiest to work with (easy to get proper mix ratio between resin and hardener, very low on fumes, no need to add wax to get it to cure, etc). Polyester is the low end in all these regards, vinyl splits the difference between the 2. Pricing per gallon is in the $30 range for poly, $40 for vinyl and $50 for epoxy. For a manufacturer, the difference in cost is significant when youre building a lot of boats (which is why most are built with poly). For a single boat rebuild, the cost difference for the small amount of resin required (10-15 gallons) is only a few hundred bucks... so it seems most people are willing to spend a little extra for the "good stuff" if theyre going to be investing 200+ hrs in labor for such a project. |
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Dbat 79SN
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Joined: April-11-2011 Location: Appleton, WI Status: Offline Points: 13 |
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Posted: February-29-2012 at 2:18pm |
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Thanks for the input. Now I have the next question...what is the best epoxy to buy? Most of the epoxies that I have found are about $75-$100 a gallon and the one I have found some of the better reviews on is "System Three". Do you have a recomendation and a source?
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Dave
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Online Points: 21186 |
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Posted: February-29-2012 at 2:31pm |
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I, and many others here, have used US Composites with good results.
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Dbat 79SN wrote: