Crosby 8mm G335 Chain Replacement Link

[GraemeS]

I bought an extra 40m of 8mm calibrated chain to connect to the chain that came with my boat (30m). In the Bristol channel there is a fair tidal range. I also bought a Crosby 8mm G335 chain replacement link which turns out not to fit the chain! I totally admit to not checking the dimensions completely and so have no beef with the suppliers but I thought I'd mention it in case anybody is thinking of doing the same.

Anybody know where I can get a Crosby type connector that will fit grade 40 8mm chain or something similar to go though the gypsy?

 

[vyv_cox]

Short answer is that you can not. The Crosby link is made to a different standard from metric chain. It is sometimes the case that the link is not a perfect fit and either a small amount of filing or squeezing in a vice is necessary to get the link to articulate properly.

 

[GraemeS]

So, does that mean it would be OK to shave a small amount off the link to make it fit? My concern is that it will weaken the link.

Vyv you'd know. Would it be better to have a link welded in rather than using the Crosby link and cold galv the local area to the repair.

 

[vyv_cox]

I know of many people who have filed or ground a small relief to the C-link. It is hardened and tempered, so filing might be hard work. I think there is adequate strength there even with a small amount taken off. First of all I would squeeze the last links in the chains to be joined in a vice lengthways, to open up the hole a little. It won't do any harm so far as strength or passing through the windlass is concerned and if it goes horribly wrong just cut the link(s) off.

I would not weld an additional link, too many unknowns with that approach. You will never find a welder who will admit that he might not have the skills, equipment or knowledge to do it but they will always take the work..

 

[GraemeS]

I shall give it ago this evening. If I fail I think I might make a trip up to William Hatchet and get them to weld it as they are the chain experts.

Many thanks for your advise - it is very much appreciated.

Graeme

 

[emandvee44]

I joined two pieces of 10mm anchor chain with a 10mm (equivalent size) crosby link. I had to hammer the joining link into the chain links, which was not too difficult.

M.

 

[GraemeS]

Just pinched the links in the vice as suggested by Vyv. Worked a treat. In fact it need only a small amount of spreading to make it work.