Help... 1/3 way through trasom repair and...!

[johnny_boy]

Hi guys, some of you may remember me although I haven't posted for some time. I have been renovating a MK1 Rigid Raider in the UK for longer than I care to mention, lol! I have finally got round to starting the laying up of the new transom after removing the outer skin from the double skinned hull (EEEks, I know, would have been better to remov the inner skin, lol)Anyhow, have determined spec as West Systems Epoxy resin, 2 layers biaxial,1 roving woven, 2layers biaxial, 1 roving woven, 2 layers biaxial, 1 roving woven, followed by pigmented resin, faired with low density filler and painted.Have finally got round to laying up now that the temperature here in the UK is in excess of 15 degrees celsius most days and the rain is less frequent. THE PROBLEM I have been having is this. I have removed the drain plug and am intending on re-fitting it once transom is complete. The hull has suffered from water ingress and the flotation foam is saturated. This causes slight dripping from the lowest point of the keel at the transom, which I attempted to keep at bay with paper towel until the first few layers of biaxial/woven had cured. This unfortunately didn't work and as a result water has been dripping through the uncured resin. I assume this has been washing the resin away in the process. What sort of problems is this gonna cause me and how do I rectify it before I continue the laying up process. Thanks in advance guys!!!

 

[Bob_VT]

Re: Help... 1/3 way through trasom repair and...!

Moving to Restoration

 

[jonesg]

Re: Help... 1/3 way through trasom repair and...!

The quick fix is tilt the bow down so it doesn't drip but that leaves the water in there.

the proper fix is gut the foam out.

the damaged resin will need to be removed, I'd wait til it cures then grind or sawzall it out or whatever tool works for you. If that means you remove some of the lower wood so be it but it needs to come out.
You can patch it back with epoxy putty made from epoxy cabosil and chopped fiber, that will be stronger than stinkin wood anyway.
Make it stiff enough to hold vertically then cover with sheet plastic and back it up with a sheet of plywood to hold it in place til it cures.

some very talented boat builders prefer to always remove the outter skin rather than working from the inside. Look at this, he does very good work from the outside.
http://www.hermco.net/

 

[erikgreen]

Re: Help... 1/3 way through trasom repair and...!

Yeah, removal of the outer skin is actually easier in a lot of ways than removing the inner skin, but you have to be good at finishing gelcoat and matching finish and color to have it look anything close to good.

It's like painting a car... you can do it yourself with a rattle can, but it'll look like you did. To make it look good you do lots of prep, pick a high quality paint, apply it in the right way in a spray booth, and oven cure.

Most people don't know how to do that in gelcoat, so they end up with a solid transom and a boat that looks like crap, which kills the resale value and a lot of pride in ownership.

That's why we mostly recommend working from the inside here. Plus usually the same boats that need transoms need stringers too, so you need to pull out most of the interior anyway, in which case doing the transom from the outside IS actually more work than just doing extra work on the inside when putting in new stringers.

Erik

 

[chrishayes]

Re: Help... 1/3 way through trasom repair and...!

I couldnt imagine trying to do this work from the outside in. What a nightmare that would be and you are pretty much garunteed to have a hack looking backside! lol

 

[jonesg]

Re: Help... 1/3 way through trasom repair and...!

I couldnt imagine trying to do this work from the outside in. What a nightmare that would be and you are pretty much garunteed to have a hack looking backside! lol

Well this guy has never touched fiberglass resin before,
nothing hack looking about his work.

http://www.classicseacraft.com/foru...r=72809&page=1&view=collapsed&sb=5&o=&fpart=1




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