S2 7.9 - Exploding Daggerboard!

[Bitter Gnat]

So, over the last month the wife and I have noticed our boat seemed to be getting slower. Couldn't figure it out. Our bottom cleaner didn't tell us anything. It all came to a head last weekend when we finished a 22 mile race an hour and 15 minutes behind the first place boat. That winning boat was an S2 7.9 that walked away from us at the start. We dove the boat yesterday thinking it was just really dirty and discovered this.....



Any S2 7.9 owners/sailors out there in SA Land experienced this sort of catastrophic delamination of their daggerboards?  Just by the way the glass cracked off in mostly straight lines makes me think this was a failed repair?

I have a guy (Gouvernail, that's you!) who says he can rebuild it. But, wondering if searching for a used board somewhere be a more solid option?

Still kinda stunned at what we are looking at here.
 

 

[Somebody Else]

A 40-year-old foam daggerboard? Looks like about what one would expect. I would use a still-intact section of that to draw up plans for a complete new board, built using modern materials and techniques. The boat is good enough that the expense would be justified.

 

[Bitter Gnat]

Foam filler over lead. So, a bit more complicated I imagine?

 

[DA-WOODY]

So, over the last month the wife and I have noticed our boat seemed to be getting slower. Couldn't figure it out. Our bottom cleaner didn't tell us anything. It all came to a head last weekend when we finished a 22 mile race an hour and 15 minutes behind the first place boat. That winning boat was an S2 7.9 that walked away from us at the start. We dove the boat yesterday thinking it was just really dirty and discovered this.....

View attachment 461598 View attachment 461597

Any S2 7.9 owners/sailors out there in SA Land experienced this sort of catastrophic delamination of their daggerboards?  Just by the way the glass cracked off in mostly straight lines makes me think this was a failed repair?

I have a guy (Gouvernail, that's you!) who says he can rebuild it. But, wondering if searching for a used board somewhere be a more solid option?

Still kinda stunned at what we are looking at here.
 

maybe check out the whaat boat is this rudder off thread

you don't have a PHRF out there do you ??

a little cutting, a little grinding, sum Buffing out And yer Good to Go !!

 

[Steam Flyer]

So, what exactly is the problem?



Repairing that board should not be difficult. It's parallel sides, yes? Use the intact upper part to make a mold for the lower half, make sure when you lay it out to do the actual reconstruction that the mold is aligned as perfectly as can be with the existing 'board.

The thing that would make it expensive & difficult is that it's heavy to move. Worth firguring out how to do it with minumum lifting and moving.

FB- Doug

 

[Rouxfus]

If that notch is the leading edge of the daggarboard, my guess is that you hit something solid at speed *hard*… like a submerged cargo container edge, and the blunt force impact sheared the outer covering off along that line of fracture which seems to originate at the notch, and peeled it down and off like a banana peel as the boat rode over the obstacle.

 

[CaptainAhab]

1st Question:

What was the bottom cleaner using?

2nd Question:

How is it possible you only lost by 15 minutes in a 22 mile race (3hrs in a straight line at hull speed). Fix that shite and you will destroy your competition with no other improvements to your boat or sailing abilities.

3rd Question:

What did your competition do to your dagger board?

4th Question:

Your wife must have really good tits to distract you enough not to notice that you were pointing 10 degrees lower off of the starting line. Or once again the competition really sucks and they don't know how to point. WTF is the truth?

5th Question:

Where are the pictures of those superb tits? Please include pictures of your wife's ass if it's worth seeing.

 

[DaveK]

I’d send it to Fred (Gouvernail) It’ll be fixed correctly. If you can’t find a replacement. As Fred once told me. There’s only a finite amount of info concerning fiberglass and Fred knows all of it. 

 

[sunseeker]

1st Question:

What was the bottom cleaner using?

2nd Question:

You only lost by 15 minutes in a 22 mile race (3hrs in a straight line at hull speed). Fix that shite and you will destroy your competition with no other improvements to your boat or sailing abilities.

3rd Question:

What did your competition do to your dagger board?

4th Question:

Your wife must have really good tits to distract you enough not to notice that you were pointing 10 degrees lower off of the starting line. Or once again the competition really sucks and they don't know how to point. WTF is the truth?

5th Question:

Where are the pictures of those superb tits? Please include pictures of your wife's ass if it's worth seeing.

Dude, grow the fuck up. 

 

[Captain Bastard]

My diver emails photos from under the boat to prove he did the work and he does this with all his customers. I have had divers that are more adept at billing than actually scrubbing the boat. When things like this turn up, you wonder if the diver was even under the boat.

 

[terrafirma]

You won't know yourself when you get that all tricked up. Speed up the trailing edge and fair it properly and you might get a few knots extra out of her.!

 

[Recidivist]

My diver emails photos from under the boat to prove he did the work and he does this with all his customers. I have had divers that are more adept at billing than actually scrubbing the boat. When things like this turn up, you wonder if the diver was even under the boat.

Was the centreboard retracted when the bottom was scrubbed?  I used to have the swing keel up on the mooring to minimise growth ...

Agree that there is much silverware in your future when this is fixed!

 

[Bitter Gnat]

Bottom was clean. Good divers are hard to find in these parts. I like our guy. Just don't think he understands sailboats.

Funny thing is we never noticed a pointing problem. Just slow. Really slow.

I've been floating around SA since close to the beginning. I, as well as my wife, laughed at the tit request. Guess we need to grow up too.

We lost by 1 Hour and 15 minutes. The dude that won the race was Jeff Progelhof. Current J22 World Champion skipper. So, I think we will still have our work cut out for us once we get this all figured out.

Fred has been contacted.

 

[Pollination]

If you keep it on a Mooring....looks like the boat was wrapped around the mooring chain.....if the daggerboard was down...looks like it was!  Fire your diver.....

 

[Bitter Gnat]

She is kept on a dock. Board down. 

The board was perfect when we put her in the water a year ago.  We never hit anything in that time. I imagine it would be a huge noticeable bump to do that kind of damage. The board always moved up and down in the box while sailing with no problems. Although that may explain how the glass was ripped off in such straight lines.

 

[Ncik]

Perfectly legitimate explanation, someone released Orca into your lake.

 

[Rum Monkey]

so were is the bottom half of the keel? or is that the full length?

 

[shebeen]

Bottom was clean. Good divers are hard to find in these parts. I like our guy. Just don't think he understands sailboats.

interesting mystery. I find it hard to believe he could have missed it if it looked like that, that either happened during sailing or during heavy weather while docked.

Maybe it was just a crack at first, water got in over time and it peeled off like an onion under sail. 

My feeling is that a lifiting daggerboard of this size is not common, and the casing movement might have cause wear over the years.

 

[sailman]

Why would you move it while sailing?

Did you lift it downwind?

That's not recommended for safety reasons although some cheats do it anyway.

Careful how you throw “cheat” around.  Nothing wrong with it depending on your local rules.