I started project "reinforcement" to avoid high point load and because the boat was flexing a bit too much. This was clear from day one when we purchased the boat so I knew I just had to dig into it... Here in one the two aft bunks. I have here removed a rotten mini bulkhead/frame which also wasn't tabbed properly. I've grinded a large area for the new stringer and the new bulkhead that I planned to put in here on each side.
Cutting plywood/new bulkheads.
1/2" marine plywood.
Night has arrived.. cutting stripes of foam for stringers.
Four layers of each around 10 mm stripes of foam glued together and glued to hull. This is before shaping.
Shaped and in process of filleting with epoxy and filler.
One layer of Biax and one of UD.
Here's the stringer finished before painting. That's two layers of Biax, three of UD and I used Peel-Ply partly to avoid having to sand before painting.
Morning after, bulkheads to be put in place. I've cut some vent through them and shaped them by the corners.
Glued and fillet.
Tabbed and plywood sealed.
Haven't painted the area yet but shall do so when all floor work is finalized. Boat is slowly feeling stiffer with this and the other recently done reinforcements. Showing you the other parts shortly. /Alex
18 comments:
Nice Work! Looks clean!
Alex,
Thanks for your explaination of how to reinforce the hull. You skills have come in handy and most likely will be needed agian as the two of you sail the globe. Keep these types of posts coming along with Taru's observations.
Great stuff, thanks for posting! Looking forward to more details of the work you've done.
Good job! Looks professional. Actually, better than professional.
Good job.
I would enjoy more posts like this, hardware stuff.
Cheers
Great post Alex! Very well done, would love to see more.
Nice! Is that closed cell foam you are using? How stiff is it? It looks like mattress or cushion foam but it can't be.
Eric
Nice work. Cardboard templates to cut the bulkheads or just by eye? I'll bet you just took one look at the curve and cut the shape on the dock from memory. Bastard. It's fantastic to see some behind-the-scenes evidence of the incredible work Taru often writes about. More when you get a chance please.
Great post, Alex!
Your work is as beautiful as your lady. luck dawg ;)
Thanks, I love this kind of info on your upgrades.
Kent in Kansas City
Alex:
Feel free to write and post in Spanish if that is easier. Those of us who are interested will use a translator program.
Kent in Kansas City
The photos don't show any obvious drainage channels. It is so important to allow water to drain away from each sector of the bilge in order to avoid smelly puddles developing. It also makes cleaning much easier when time comes to hose out and scrub the bilge. The idea is to drain towards wherever your main pump is located.
Maybe the work is finished and I'm too late.
That does seem like a really well-done job. The window in the bulkhead is a nice touch. Few boat builders would bother with something like that unless they were really trying to save every last ounce.
envanandel: He's using a foam designed to act as a coring material. It's probably airex or something similar. It's much stiffer than anything you'd use in a cushion.
Looks good Alex. But it looks like some carbon there on the stringer - will its high modulus be out of 'step' with the surrounding matrix? and then take ALL the load.
Gary Underwood.NZ
Excellent post Alex.
Keep them coming.
Ian
Thank you for the info..
Looks great..
The guys following the blog truely appreciate the detail..
Peter
Cardboard templates for the bulkheads yes.
Sav there are drains by the bottom end of the bulkheads towards the bilge, these corners are not visible in the picture I see.
Gary: I could have used e-glass but I wanted something as light as possible and so basically the little amount of carbon there is, it flexes just enough to not give too much load to the rest of the structure. The low weight is what's important here.
Great Work!
He is my man!
Fillet Jojnts and all. Biax where it has to be. No fussing around. Sometimes I wish I would be in your shoes and not just selling these "goodies" from the office and advising on the phone. But done a lot before and now is a different time.
Smooth sailing!
Manfred
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