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Old 27-04-2014, 11:31   #1
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Which way round should the shackle be?

So ive bought my Rocna 40 KG galvanised anchor and i am connecting it to my 10mm galvanised chain, does the pin of the Wichard stainless 12mm shackle go through the chain or the anchor??

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Old 27-04-2014, 11:38   #2
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Re: Which way round should the shackle be?

You are going to catch some flak here for using a stainless shackle, and perhaps for using just one shackle instead of 2. So anyway, if you were to go with 2 shackles, one would have the pin in the anchor. The other would have the pin in the chain.
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Old 27-04-2014, 11:46   #3
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Re: Which way round should the shackle be?

the pin may fit the anchor better without chafing....? I've got no problem with hi strength SS shackles...
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Old 27-04-2014, 17:30   #4
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Re: Which way round should the shackle be?

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I've got no problem with hi strength SS shackles...

Where do you find these? I've had a tendency to stay away from stainless as it's less strong than high carbon steel, but didn't know about high strength stainless
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Old 27-04-2014, 17:38   #5
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Re: Which way round should the shackle be?

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Where do you find these?
Here:
HR shackles
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Old 27-04-2014, 18:00   #6
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Re: Which way round should the shackle be?

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Originally Posted by No Ice View Post
So ive bought my Rocna 40 KG galvanised anchor and i am connecting it to my 10mm galvanised chain, does the pin of the Wichard stainless 12mm shackle go through the chain or the anchor??

Brian

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Hi Brian,

I don't think it matters. I got one shackle and can't for the foggiest visualise which way its up. No doubt some who "knows better" will give you the correct answer which will mean you have to spend $1,000 or buy a new boat... Or both!
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Old 27-04-2014, 18:35   #7
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pirate Re: Which way round should the shackle be?

The pin... if you can fit the lug of the shackle through the link its to small..
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Old 27-04-2014, 18:41   #8
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Re: Which way round should the shackle be?

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The pin... if you can fit the lug of the shackle through the link its to small..
And this is good reason for using two shackles...






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Old 27-04-2014, 18:52   #9
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Re: Which way round should the shackle be?

Please don't put a stainless shackle in between two galvanized items in an electrolyte.
If you don't know why not, please look it up.
The correct way to mount the correct shackle will be to put the pin through the last link of the chain, and it should touch the last link halfway around its circumference, to avoid a point load. The anchor should have a slot allowing the ear of the shackle through it.
Ideally a 5/8" shackle on a 1/2" chain. ie. one size up.
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Old 27-04-2014, 18:54   #10
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Re: Which way round should the shackle be?

High tensile strength stainless shackles:

http://www.petersen-stainless.co.uk/pdfs/USA-PHD.pdf

Personally I think properly sized, galvanised shackles are more than adequate
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Old 27-04-2014, 19:01   #11
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Re: Which way round should the shackle be?

I'd just never heard of high strength SS is all, If I can get over the looks of a galvanized anchor and chain, I'm sure the galvanized shackle won't offend
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Old 27-04-2014, 21:24   #12
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Re: Which way round should the shackle be?

Why Would anyone want a stainless shackle between a galiv chain and a galvi anchor?? I guess Im just to old to understand this new style fancy looking stuff!! But then Galvi has always worked just fine for me !! Ya can't make a silk purse out anchor set up !!
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Old 27-04-2014, 21:39   #13
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Re: Which way round should the shackle be?

As mentioned - if you can get the ear, the bit with the hole in it, through the chain link the shackle is too small. Ideally you want a shackle pin that's as big as you can get into the link, but still allowing some play. You should be using a bow shackle (the bow will be through the hole in the anchor shank). The reason for the bow shackle and putting the 'bow' in the shank hole is to allow maximum articulation so that you minimise the opportunity of point loading.

It is difficult to fathom why you would want to use a stainless shackle (between 2 galvanised components) when you can buy a cheaper gal shackle that is much stronger than anything stainless.

I'm not quite sure why some are advocating 2 shackles.

You should consider the chain as your weak link (as its the most expensive item) and that everything else added, shackle(s), swivels, should be stronger (have a higher WLL).

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Old 27-04-2014, 22:09   #14
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Re: Which way round should the shackle be?

Two shackles are kind of like a swivel, only they probably won't fail. The shackle in the anchor shank can be quite large also. The bow of a shackle is not meant to ride on the sharp edges of the slot of something like the slot in the shank of a Rocna while the pin will set nicely in that slot. I think mostly, the ability to articulate is the main feature of 2 shackles.
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Old 27-04-2014, 22:19   #15
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Re: Which way round should the shackle be?

When galv shackle starts to loose strength you can see it happening. SS can fail without warning signs
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