CS30 boom vang question

[zar]

As I've mentioned elsewhere, I've just bought a 1986 CS30, my first boat, and am learning my way around it. I've just found a problem and am kicking myself for not having caught this before I bought the boat.

The plate where the vang is attached has been nearly pulled out in one corner. The surveyor didn't catch this either.

Anyway, I have two questions. First, how much is it going to cost me to fix this? (It seems to still be solid, no movement in the plate, but obviously it's compromised.) Second, upon studying the setup I'm beginning to wonder if the vang is improperly attached and the mainsheet and vang tackles should switch places. Can anyone tell me if it's properly set up?

See the following photo to see what I mean.



Actually, scratch the second question - it must be properly set up because otherwise the mainsheet and vang lines would tangle. It just seems odd that all the vang load is on one side of the plate.

.

[Steven Glover]

This undoubtedly happened with a accidental gybe with a very tight boom vang. The fitting is different from mine and I do not see it listed on the Rig-Rite site for Isomat Spars (NG 46). You must have an earlier CS30 as the mast collar changed as well as the attachment hardware in late 86 models. The fitting is attached with 1/4 inch stainless steel rivets. They can be drilled out with a 1/4 inch drill bit and the fitting will come off. It can be replaced with a variety of fitting. See the Rig-Rite site or if you are considering a rigid vang in the future most brands come with custom attachment fittings which have to be rivited to both the mast and boom. As it is only being held by three rivets its integrity is compromised. Untill replaced/fixed, I would avoid very heavy air sailing where a heavily tensioned vang is required. For normal sailing conditions you are probably fine. As for using the lower fitting on the mast collar, I have only seen blocks attached there and the collar may not be designed for the force generated on the boom vang. Perhaps other CS30 owners have used this attachment point and can comment.
Steven Glover
CS30 Kelsea
BYC, Ottawa

[alex]

I don't think you should use the collar for the main sheet. It will pull the mast against the cabin top as the collar is not connected to the mast.

[paragon4445]

I noted your problem today, and being at my boat today, I checked out my boom vang. I have a middle bar attached to the plate at the bottom section and my vang is attached at the top bar so it won't slide down to the corner. So there must have been a design change. I have an early 30. Who was the surveyor?

Rick

[zar]

Jul 29, 2009 18:36:20 GMT -5 paragon4445 said:

I noted your problem today, and being at my boat today, I checked out my boom vang. I have a middle bar attached to the plate at the bottom section and my vang is attached at the top bar so it won't slide down to the corner. So there must have been a design change. I have an early 30. Who was the surveyor?

Rick

The surveyor was Wallace Grouk out of Port Credit. He seemed to have a good reputation, has a decent website full of useful info, and I liked his sample surveys.

[alex]

First of all, it isn't hard to fix. You can drill out the rivets and hammer the plate flat and put them back. But I would put two more rivets in the middle of the plates.

Secondly, have a look at the Garhauer solid vang. It make sailing much better. No topping lift to flop around. The garhauer vang uses 8 bolts or rivets.

[zar]

That's a huge relief to me, that it isn't hard to fix, as I had visions of spending hundreds on it.

Mind, I might still spend hundreds...don't rivet guns need air compressors? I'll probably use bolts or something.

[alex]

Zar,

No need for air compressor. Princess Auto and Canadian Tire sell hand rivet pliers for about $30-$40.

If you are a regular customer of The Store Masons in Port Credit, you can usually borrow one for a day or two.

You can get SS rivet for about $0.20 cents each at The Store Masons. Put a bit of anti-seize compound in the hole before you insert the rivert to prevent galvanic corrosion. Again, Princess Auto or Canadian Tire sell them for a few dollars a jar. Both tools available in the automotive section.

After you drilled out the riverts, you can pry the thing off and put it on a vice to hammer it flat again. It doesn't look that bad.

[zar]

Brilliant! Thanks for that info.