S2 7.9 - Exploding Daggerboard!

[M26]

What local rules allow lifting the board?

same as lifting the rudder....

or let me ask you this way: is there any rule that bans moving apendages? Is there a rule that allows canting the keel but lifting it is prohibited?

 

[Monkey]

Ignore the village idiot. The 7.9 class specifically allows lifting the board while sailing. It’s rule 2.10 in the class rules. 

 

[eerie sailor]

In a passage race in a 7.8m trailer-bailer.

The rules were that the centerboard had to be locked down.

Traversing a narrow shallow section with only one identical boat 50m in front of us, symmetrical kites up.

Said to the crew "Let's follow him, if he makes it we will.  Watch him."

SUDDEN STOP AND ROUND UP KITE FLOGGING BOAT ON ITS EAR!

The 'other boat' sailed on even closer to the shallows than we were.

They lifted the board, we stuck to the rules naively thinking that they were doing the same.

Some sailors are fucking cheats.

Every phrf organization out there knows S2 7.9s have lifting centerboards. The boat also has almost 1000# of internal ballast. Lake Michigan phrf is the only organization I'm aware of that says board down all the time. 

 

[AnotherSailor]

Dude, grow the fuck up. 

and learn how to read.

 

[AnotherSailor]

I don't know Fred personally, but I am sure that is a solid route to go. As others suggested, you can do it yourself, but unless you have a ton of fiberglass experience, it will require a lot of learning: you need to fill in the gaps, have the new part bond to the old (if that is still in good shape, at least) and somehow end up with the right shape. I have messed way too much with epoxy, glass, and fillers, and I know it would take me a long time to get this right. It is not impossible, but if you would like to go sailing anytime soon, I would ask a professional like Fred.

I am sure you posted on the class site as well. You might be lucky to find one that is in good shape, but me thinks that those will be hard to come by.

 

[Bitter Gnat]

Great. Went to bed just a normal guy looking for advice and woke up a cheater. 

Lake Ray Hubbard in Texas. We had a hell of a freeze back in Feb, but the lake never froze over.

No way would I try to fix this myself. Leaving it to the professionals. My wife (aside from having great tits) makes good money. So, all good there!

 

[ROADKILL666]

I would fire your diver then slap him for not saying anything 

 

[LEE73]

See some board damage before, mine to be exact.

Never see one with this much damage before.

Going to dive on mine this week after seeing this.

I raise the board and rudder at the dock,

The class rule has always allowed the board to be raised downwind. The boats are rated in PHRF as such.

 

[kmcfast]

Take 3 flat plates of steel, weld together, fill epoxy and micro balloons, then fair the leading and trailing edges.

Roger Mac Gregor built 1000's of them.

 

[Grande Mastere Dreade]

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.

he's on a lake, if he hit anything, it would be slimy mud.     and why not the guys fixen boats just to the east of you?

 

[Grande Mastere Dreade]

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.

you weren't birthed at sapphire bay when everything went tits up?

 

[DarthSailor]

Great. Went to bed just a normal guy looking for advice and woke up a cheater. 

Lake Ray Hubbard in Texas. We had a hell of a freeze back in Feb, but the lake never froze over.

No way would I try to fix this myself. Leaving it to the professionals. My wife (aside from having great tits) makes good money. So, all good there!

right coast facing the dam or facing I-30

Never mind I just paid attention to the background 

also this https://sailinganarchy.com/advert/s2-7-9-hull-421-2/

 

[Crime Scene]

The part of the leading edge of the board that meets the opening in the hull is a standard maintenance point for an S2 7.9. Depending on how often you raise the board, it could need to be maintenanced once per year. If left unattended for long periods of time, that notch will grow and end up with your current result. You may want to contact S2 Yachts for guidance on the repair/rebuild and once it is right, be sure to look at it once per year.

 

[Cal20sailor]

The part of the leading edge of the board that meets the opening in the hull is a standard maintenance point for an S2 7.9. Depending on how often you raise the board, it could need to be maintenanced once per year. If left unattended for long periods of time, that notch will grow and end up with your current result. You may want to contact S2 Yachts for guidance on the repair/rebuild and once it is right, be sure to look at it once per year.

Pretty sure S2/Tiara is Tango Uniform.  I did some work with Eric years ago, you couldn't find a nicer guy and left us way too soon.

 

[Parma]

I would fire your diver then slap him for not saying anything 

Yep, but only after he asks if the diver saw anything and if he did why he did not report it. It's possible the diver does not have BG's phone, email etc.

Or maybe the diver saw the damage and thought "He has to know about this. Anybody who hits something that hard has to take a look for damage. I don't need to mention it and cause further embarrassment"

 

[Bitter Gnat]

Eric Schlageter was a great guy. Sailed with and against him in SD for many years. He should still be with us. 

Boat is at the one true RCYC. Not that smaller club up on the other side of the northern border wall.

S2 side of Tiara is mostly dead. Luckily, I can get a template kit from Computer Keels.

 

[Grrr...]

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.
 

A very common method of damaging these boards is to not have them all the way down.  I.e. - we drop ours the last 2 feet to wedge it hard into the 'down' position.  If you don't do that, it's possible for the board to move some in the trunk and damage the trailing edge against the trailing edge of the dagger board trunk.  I'd take a look at your boat and see if that trailing edge of the trunk has been damaged.  This can allow water ingress to the board.

Another common way for these to fail is for the top surface (the very top horizontal surface) to allow water ingress.  Over time, water gets into the board, and then the freeze / thaw cycle can delam them and them to fail.  I've them do that twice, though never to this degree.  And neither failure was quick - they looked like they had taken years of not being paid attention to.

 

[Zonker]

Although that may explain how the glass was ripped off in such straight lines.

If the outer layers were double bias cloth (fibers at +/- 45 to the vertical axis) that could explain the failure in a straight line.

The blisters in the green (foam?) sure indicate long term water intrusion

 

[Glenn McCarthy]

Results of the 6th Mode:
 

View attachment 461598 View attachment 461597

 

[40grit]

We would be glad to fix it. Obviously we need the keel. Process, would foam the lead in a box mold using 15 pound foam. Then re shape, laminate and post finish. Picture lead core surfboard. 
we see a lot of failures when things cycle freeze thaw.