bedding the stringers

Kracker Jack · #1 10-08-2011, 10:05 PM

what should I use to bed my new stringers? 5200? subfloor adhesive? Thanks in advanced

Curapa · #2 10-08-2011, 10:09 PM

Epoxy them in.

Kracker Jack · #3 10-08-2011, 10:25 PM

then what is this im hearing about hard spots in the floor if you dont put a buffer between the glass on the floorand the stringer? Ive read that you can split the hull if the hull is tweaked right. Im gonna glass them over after i bed them in. Im kinda new to this stuff so bare with me.

cterrebonne · #4 10-08-2011, 10:26 PM

Quote:

Originally Posted by Kracker Jack

then what is this im hearing about hard spots in the floor if you dont put a buffer between the glass on the floorand the stringer? Ive read that you can split the hull if the hull is tweaked right. Im gonna glass them over after i bed them in. Im kinda new to this stuff so bare with me.

he might be talking about epoxy with some filler material in it?

http://www.fibreglast.com/product/Gl...res_22/Fillers

http://www.fibreglast.com/product/Th...ica_23/Fillers

my father in law used liquid nails construction adhesive outdoor formula for his stringers when he did them. He said it worked just fine.

Curapa · #5 10-08-2011, 10:32 PM

You want to take epoxy resin and mix it with a filler to fill the gap. There are many different formulas but I use Epoxy and West System 406 for my glue and fillets. I use micro balloons and Aerosil for fairing.

The epoxy glue will be the thickness of peanut butter, spread it on the stringer and put them in place. Then use the epoxy to make a fillet along the side of the stringer.

Curapa · #6 10-08-2011, 10:36 PM

There is a lot to learn but this will get you started.

http://www.epoxymethods.com/filleting.htm

Check out http://forums.bateau2.com/ for some more info on just about anything to do with boat repair.

Kracker Jack · #7 10-08-2011, 10:42 PM

very cool thanks for the help. I was gonna keep the existing"bed" with about 1 1/2 of the factory lay up there as a guide then use the 5200 to bed the stringer in the factory groove then glass over the whole stringer and tabbing into the floor about 6 inches. Is that a proper way to do it?

Curapa · #8 10-08-2011, 11:05 PM

If you have it all the way down that far I would just start fresh. Grind off all of the old stuff and put down the new. It will probably be easier anyways.

Either way you don't want to use 5200 for a structural part. You may be thinking that the glass wrapped over the stringer will be enough but don't give it that much credit. 5200 has many great properties but shear strength is not one of them. You are gonna have to get familiar with epoxy glue, fillets and fairing anyways. Bite the bullet and get some epoxy supplies.

bksah2 · #9 10-11-2011, 10:05 PM

While we are on the subject of stringers anybody ever seen a stringer run right down the center of the hull ,,I have seen them midway up the hull but never right in the middle ...my buddy pulled his floor and thats the way it was layed out ..Seem odd to me just wondering if it was normal or if it was redone years before and it was added

RidgeRunner · #10 10-12-2011, 07:56 AM

Skinny Water flats boat has a center stringer. Improper trailer adjustment from day one, broke one of the outer stringers at the chine and cracked the hull on my best friends boat. Get the floor out and bingo, there it was. It did not go any further fore than the start of the front deck. Used to support the center of the floor. The stringers were wood and all were touching the hull. Lightweight design IMO, no ribs (bulkheads) and the outer stringers were very small. 2x3 pine maybe??