Quote:
Originally Posted by afishin82
. . . 4 layers to tab em in?
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4 layers of 1708 would be about 1/4" thick and serious overkill for your application, although Connor was trying to fix a loose stringer/cracked hull problem, so very appropriate for his situation. If you study the laminate schedule and detailed stringer tabbing sketch in the Boating Magazine article on the 20' Seafari, you'll see that Moesly used the equivalent of 2 layers of 1708 to install
key structural members, i.e., the
stringers. For the unnecessary bulkheads, I think one layer would be plenty.
The only bulkheads in my Seafari are the one just forward of the gas tank, and the one under the bunks, just forward of the head. Don't remember what the fuel tank bulkhead looks like, but from the attached pictures of the forward bulkhead, I'd say it's tabbed to the stringers with one layer of heavy roving. Note that there's no tabbing at all around the keel. Forum member Old Blues Player said the tabbing had come loose on his, which is why I took these pictures. Maybe his boat had a quality problem/"Monday or Friday build", but my boat has seen some very hard use on numerous Bahama trips, and those tabs still look good.
You might want to install some limber holes in those bulkheads so you don't build in a bunch of water traps! Any water that gets in those spaces needs to be able to run back along the stringers where it can get to the bilge pump thru the limber holes at the back of the stringers.