Originally Posted by TrevC
I've been trying to find a suitable shackle/swivel combo for our ground tackle setup. I'd like to fit hardware
that has a working load of at least equal to our chain. The chain is 5/16" G4 HT (3900lbs WLL), with a 25KG Rocna. There's no over-sized end links on the chain
I've only found one brand of shackle that would be correctly rated, but they're not in stock. Here: Alloy SPA Shackles
The alternative seems to be Titanium. Does anyone on the forum have experience with Titanium shackles and swivels?
I would go for the 13/32" Ti bow shackle
, which would join chain to the anchor. I would then use one of the Ti swivels
after a couple of feet of chain.
Thanks for any input!
Keep in mind that Ti is x% stronger than steel
only BY WEIGHT, not by volume. To make a Ti shackle which is equal in strength to a given steel
shackle, it will need to be rather larger than the steel one. For it to be stronger, it will need to be a lot larger. Since size is what usually constrains us (getting the pin through the chain end link) Ti seems unsuitable for this purpose. We want as much strength packed into as little volume as possible. And the weight -- and weight is the one really great advantage of Ti -- of the shackle is irrelevant, connected to a quarter ton or half ton of anchor chain.
As to that swivel -- that's the type that can't handle lateral loads.
And would kind of galvanic corrosion
issues would you have, with such an unlike metal immersed in sea water
between two steel parts
Personally, I don't like any of that stuff. Stick to tested "colored-pin" galvanized shackles, as far as I'm concerned.