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post #11 of 13 Old 08-13-2013 Thread Starter
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Re: Chain plates

According to most of the internet information out there, they indicate that the chainplate is attached to a member of the hull superstructure.
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post #12 of 13 Old 08-13-2013
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Re: Chain plates

Originally Posted by Ruthlessrider View Post
OK, I don't claim to be all that knowledgable on marine terminology, so just to make sure I know what everyone is talking about, can someone define bulkhead, please? To me a bulkhead is a walled barrier between compartments, such as the barrier between the head and the V-berth. The chain plate seems to be not anchored to the bulkhead, but to one of the boats ribs (my term). So the boat would have a wooden rib helping to form the plane of the hull, sandwiched by the chain plate, covered by epoxyed fiberglass. Wrong?
Your definition of bulkhead is fine.

I can't make out what the rib is that you are talking about but it don't matter much. One way or another you have to chop out rotten stuff and replace it. Working with epoxy is well documented in the west systems site.
If you put it back together with solid wood and epoxy and do the 8 to 1 bevel it you want to do any patches it should be as strong as new.

I wouldn't do anything like this myself without at least having one book.

This is good one.
If you don't know about this stuff you can do something that will make sense at the time but will cause the repair to fail, and you may not be so lucky the second time.

The lesson from the Icarus story is not about human failing.
It is a lesson about the limitations of wax as an adhesive.
If you have an engineering problem solve it.

Last edited by davidpm; 08-13-2013 at 05:53 PM.
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post #13 of 13 Old 08-16-2013
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Re: Chain plates

cut out the old peice of wood covered in glass as best and intact as possible, this will be used as a template.
then using cardboard from a box make a second template that is cut to fit what you have left from your cut.
you will have to sand/grind some wood and glass back and attempt to make as flush as possible.
when you are satisfied with card board template then transpose onto a marine grade plywood and cut new piece
put a layer of matting up on glass section and extend at least 18 inches on both sides of new board, snug board in at same time so it is fitted into place.
with another matting lay along first layer and then cover wood on each side but do not wrap over end come to an inch of end, then cut where needed to make fitting tight at hull side on both sides of the plate.
next take a tight weave cloth and in smaller sections fold into corner extending to end and 10 inches along hull 6 more layers will work and each one on hull should be 2 inches shorter.
then p-lace the last of the cloth over the whole repair to cover andhelp when you fair it out
grab a can of structure filler and fair out all
place plate and with sharpie mark holes, drill
re bolt plate and locktight with blue.
should be as good or better then new
repaint if needed and Bob's your uncle

Sailing The Great Lakes in my "Bluewater" Grampian 26

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Last edited by KnottyGurl; 08-16-2013 at 02:14 AM.
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