Upper and lower shrouds on one chain plate. How to?

[Chotu]

I swear I have seen this somewhere before.

Has anyone seen the technique for connecting upper and lower shroud to a single toggle on a single chain plate?

This is kind of an urgent question I’m at the rigger.


Trying to figure this out in order to proceed.

No they are not fly by night. Yes they are very good at what they do. They have suggested I have to put in another chain plate. But I have seen this somewhere. Where the lowers and the uppers are somehow connected to the single chain plate. I just can’t seem to find an example of it.

[rslifkin]

Got a picture of the chainplate you need to attach to?

[Chotu]

Originally Posted by rslifkin

Got a picture of the chainplate you need to attach to?

Yes, sir!

[Chotu]

Also there is something like this on my sister ship. It’s hard to make out exactly what’s going on in the picture. But I think it’s grabbing the ends of the pin.

[rslifkin]

Ok, so presumably the attachment is done in double shear to the center portion of that rod. Could the attaching hardware be selected to leave enough room for 2 of them side by side in there? Or is the load on one of the shrouds low enough to handle coming up with a way to mount it in single shear on the outside?

[rslifkin]

Originally Posted by Chotu

Also there is something like this on my sister ship. It’s hard to make out exactly what’s going on in the picture. But I think it’s grabbing the ends of the pin.

Yes, that looks like instead of mounting to the center of the pin they made a bridge that goes over the whole thing, attaches to the ends of the pin on both sides (as well as a strap under the center) and then provides 2 attachment holes on top to connect the shrouds to.

[Sailing55]

I'm beginning to understand why you have so many problems getting anyone to work on your boat. The riggers, whom you seem to trust, have told you what you need to do, yet here you are on CF once again looking for "expert" opinions on how they should proceed. Careful Chotu, you might get run out of another yard!
At least your saga is not boring...

[rslifkin]

I wonder... What's the diameter of that pin? Could you possibly terminate the rigging with a pair of appropriate size eye terminals slid onto the pin in the center section and washers or spacers of some kind to prevent anything from sliding?

[rslifkin]

Originally Posted by Sailing55

I'm beginning to understand why you have so many problems getting anyone to work on your boat. The riggers, whom you seem to trust, have told you what you need to do, yet here you are on CF once again looking for "expert" opinions on how they should proceed. Careful Chotu, you might get run out of another yard!
At least your saga is not boring...

Ordinarily I'd agree that if the rigger says it needs another chainplate, it needs one. However, Chotu has provided a picture of another boat built from the same plans that solved the problem without an additional chainplate. Plus, the plans the boat were built from didn't include another chainplate.

[Sailing55]

I understand that. But poor old Chotu seems to be at odds with people working on his boat Maybe the riggers think another chainplate is the best option for the rig he is putting together with apparently salvage parts and mast sleeves etc. Not trying to bash the guy, but at some point listen to the folks you hire or find someone else.

[Sailing55]

Also your advice to Chotu on many of his questions seems well thought out and practical. In many years of working in boatyards I realized that one of the worst things you can do is ask 5 different people their opinions, get 10 different ideas (as has been stated previously) then tell the people doing the job how they should proceed. At that point the response is often " good luck with that, and see ya later".

[thomm225]

I've seem racing boats like the J/30 having both upper and lower shrouds connected to a single chain plate whereas many offshore boats have a chain plate for each shroud.

Three on ether side. Like my boat a Bristol 27 and also like the Contessa 32 pictured

One each for the two lowers and one for the uppers.

[Benz]

Just have a three-cornered plate fabbed so that the bottom hole grabs a toggle around the chainplate pin, and the other two take a turnbuckle jaw each.

Unless the designer is a chump, he designed a chainplate that will take the load necessary to hold up the mast. No need to second-guess him at this stage.

I'm surprised the rigger couldn't imagine this simple expedient.

[Chotu]

Originally Posted by Benz

Just have a three-cornered plate fabbed so that the bottom hole grabs a toggle around the chainplate pin, and the other two take a turnbuckle jaw each.

Unless the designer is a chump, he designed a chainplate that will take the load necessary to hold up the mast. No need to second-guess him at this stage.

I'm surprised the rigger couldn't imagine this simple expedient.

Yeah. I know what you mean. I’m kind of surprised they couldn’t picture it either. But I think you get stuck in a rut sometimes. They do a lot of boats here. It’s not a lot of creativity. It’s a lot of the same thing over and over. So it doesn’t fit the norm, so they most likely thought it was impossible.

I sure wish I was up in your harbor getting this stuff done. But, things seems to have turned around down here. I finally have been talking to the real guy who is doing the work instead of the sales guy and we figured everything out already. It was a good day.

The designer definitely made the chain plate way over spec. In fact he says that he only needs half of the glass that we have on the chain plates. He added extra because people were nervous. That’s a direct quote.

So we are having some kind of three cornered plate just like you are describing made.
Thanks for the input.

[Sailing55]

Originally Posted by Chotu

At least they have a life. How’s the couch treating you?

22 years on the same boat...never owned a couch.