1973 Winner Bimini 17' Trihull Rebuild

[TitanTea]

Re: 1973 Winner Bimini 17' Trihull Rebuild

I like your hanging rack for the cap. Looks exactly like the frame from my portable "garage" I picked up to store my 2 personal watercrafts. Cool.

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

That's exactly what it is.

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

I looked back at oops' extension thread but I didn't find what exactly (more specifically quantity) his peanut butter ingredients are. Can anyone help?

 

[tdrudd87]

Re: 1973 Winner Bimini 17' Trihull Rebuild

Its kind a mix till its good thing. I have been using 1/32" milled fibers and aerosil in my recent batches, mabye 8 spoons of each in a solo cup amount of resin. USComposites says 1:1 aerosil gives a mayo like consistency.

I keep adding until the mix will not flow, like a thick mayo or weak actual PB. I would go on the runny side for bedding the transom, and a firmer mix for filling gaps and filleting.

Terry

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

I talked to a guy that has a fiberglass repair shop and he does boat transoms for a living, and he told me I could use plain old "bondo" for bedding the transom. He said it's waterproof and bonds to wood just as good as fiberglass resin. Does that sound right?

 

[cperrine]

Re: 1973 Winner Bimini 17' Trihull Rebuild

Bondo bad.

You can't really wet-out with bondo. Are you using polyester or epoxy resin?

Re: your floor. It will last 304,000 thousand years if you seal the bottom as well as the top, seal any holes you drill, use bronze screws if you're sinking them and use marine ply (no voids, and really strong).

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

I think I'm ready to start putting in the transom. I do have a thought, my transom is one 1/2" piece of plywood and anothe 3/4" piece of plywood laminated together. So my question is do I just put the 1/2" ply in first and then add the 3/4" ply or do I laminate them together and put them in as a unit?

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

By the way, I didn't realize there was a second page to this disscussion already, oops.

I'm using poly resin since that lasted the last 37 years, I don't think I'll have her that long

 

[dawitner]

Re: 1973 Winner Bimini 17' Trihull Rebuild

I'd be real careful with that plywood, I'm not sure if that is a "Thompson's" type sealer on there or if it is a wax ie: PEG (polyethelyne glycol) that is sprayed on the plywood to make it water resistant.

If it is the peg you may have much difficulty getting anything to stick to it.

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

If you're talking about the stuff I'm using for the floor, I did see someone else on here using it and no mention of any problems getting anything to stick to it. As for the transom, it's all Marine grade plywood. I figure the floor will be an easy fix in the future (if it's needed) because it doesn't tie into the transom.

 

[cperrine]

Re: 1973 Winner Bimini 17' Trihull Rebuild

Your transom is only 1 1/4" thick? or did I miss something.

I would laminate the two sheets together first, but maybe I don't fully understand your sichyation. more pics? Whatever makes clamping easiest.

1/8" rollers apply a good even coat of resin on that glass mat.
Also, you can add West System fillers to polyester resin, plus you can mix the resin and filler before adding the catalyst.

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

According to what came out, yes it is only 1 1/4" thick. I thought it was 1 1/2" but the more I dug into it, it was apparent that 1 1/4" was the correct thickness. I tried West Systems 406 Cabosil type stuff and the peanut butter just didn?t want to work out. It didn?t thicken up like I thought it would. Hopefully it?ll be okay the way it is. I decided to install the 1st layer (1/2? Ply) and here are some pics of the clamping fiasco.

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

Next is the 3/4" ply, and tie it into the existing structure. Then onto the floor. Looks like I might be making some headway finally

 

[cperrine]

Re: 1973 Winner Bimini 17' Trihull Rebuild

Looks good. Be sure to work from one side to the other, so as not to trap air between the sheets. You can use screws where clamping is tough, then pull them out when you're done. Fill small holes left by screws, or other, with toothpicks/matchsticks coated in resin. There are syringes that you can fill with resin too.

I think it takes a lot of filler to get the right consistency. Sometimes I make a small practice batch.

My two favorite fillers are 406 colloidal silica and 407 low density. Both are extremely easy to mix in. 406 is a strong adhesive and 407 is great for fairing.

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

The 3/4" ply is in now. I soaked the new Mahogany backer block for my bow eye in resin and put it in place and covered it in glass. I also soaked a new block of Mahogany to back up the pump outlet on the side of the boat that goes to the front pump. Once everything sets up I'll be able to start using the 1708 and tie the new transom into the stringer system.

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

Today I tied in the transom to the stringer system with 1708 Bi Ax. Also covered the 3/4" ply with csm.

 

[tallcanadian]

Re: 1973 Winner Bimini 17' Trihull Rebuild

How did I miss a tri hull thread..good gravy. Nice looking boat. Big old transom on her. Good work so far. Your on the right path. I too think those jugs are nice. I've never seen anything like it. I'm wondering if this was rebuilt before. But it doesn't matter. Nice work and Keep the pics coming. I'll be watching this one. Good Luck.

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

My parents bought one of these Winner boats (a 15' or 16' v hull) back in the 70's and said the salesman said the claim to fame on these is that they had flotation built into the hull and could not sink even if filled with water. I think it might have had a new floor at one time but I'm not certian.

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

The floor is cut and fitted, now for fiberglass.

 

[Ksmith0110]

Re: 1973 Winner Bimini 17' Trihull Rebuild

Some more pictures, now to clean all the surfaces and start glassin'. I might need to do some more grinding around the edges to help the glass stick to the hull but I'll try to get it done today.