hull to cap joint and 5200

WillyC · #1 07-09-2006, 04:39 PM

I'm currently working on my 1976 20' sf. I'm planning on tru bolting the hull to cap/inner liner joint and applying 5200 sandwiched in the joint. My question is: can anyone foresee why I shouldn't be using the 5200. Is there any foreseeable reason why I might need to undo this joint later on? Seeing that the inner liner and cap are one and the same and the plywood in the cap is solid as a rock, I cant think of any reason not to use the 5200. By the way I'm in the middle of a complete restoration job. New transom and redesigned splash well area but no new floor because the plywood is solid. Thanks -will

stevebrownell · #2 07-10-2006, 10:42 AM

Will,

I just did that "fix" this weekend - applied a generous bead of 5200 between the hull to cap joint. After a good hit on a pier last year, the hull had broken away from the cap joint on my '72 20 SF, and since my boat has a full liner, there was no access from the inside. I ground all the loose material and old bedding compound from the joint with a DA sander and brass wire wheel, hit it with acetone and then with the 5200. Once it set up, it was a hell of a lot more solid than it's been in many years. I'm also going to run 2 layers of 9 oz tape along this joint, to give it additional stiffness and give the rubrail screws something to bite into. If you are through-bolting the hull and cap, it will likely work, but IMHO the 5200 is a good step in tying the two pieces together; any additional reinforcement would make sense. Regarding making this joint permanent, I think that it makes more sense than repairing it so that it can be disassembled, plus, a permanent fix would be more solid. Lastly, I think the 5200 & glass/epoxy route is probably the tightest joint your gonna get.

just my $.02
Let me know if you want to see some pics.

gigolot · #3 09-24-2006, 01:58 PM

When I took the gunnel off my 69 bowrider a few weeks back it was glassed in from the inside, riveted under the rubrail and then screws through the rubrail. It appears to be that way from the factory looking at the colors in the glass.