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  #1   Report Post  
Scott Vernon
 
Posts: n/a
Default To shackle or Quick Link?

he was asking about quick links, marc.


"Marc" wrote in message
...
More to the point. the shackle you can fit to the chain is weaker
than the chain. Buy your rated chain from an industrial sling mfg. and
have them put an oversize link at each end. (small extra charge). Now
you will be able to fit the proper sized and rated shackle.



On Thu, 17 Jun 2004 09:44:54 -0400, Martin Baxter
wrote:


Another anchor question: Why don't we use quick links rather than

shackles to attach the rode to the anchor?

Seems to me that the same size quick link is about 20% stronger than it's

shackle equivalent, and if you tighten the closure nut with a wrench there's
no way for it to work open. Even if you only tighten by hand and by some

miracle (fish with fingers, crafty crabs?) it manages to work open, you
still
won't lose connection so long as there is some tension on the rode.

Cheers
Marty



  #2   Report Post  
Marc
 
Posts: n/a
Default To shackle or Quick Link?

According to the BBB chain dimensions in the following link
http://www.pyacht.net/online-store/s..._bbb_chain.htm
neither a 3/8" shackle or a 3/8" quick link will pass through 3/8' bbb
chain. You must go 1 size smaller. hence the suggestion to install
oversized end links from an industrial supplier of load rated chain.

This factoid is true for all shapes and sizes of chain, proof , ht,
bbb, and is one of the dirty little secrets of the anchor rode
packages offered by marine retailers.

After the anchor breakout force rating, the shackle is your weakest
link



On 17 Jun 2004 14:48:20 GMT, "Scott Vernon"
wrote:

he was asking about quick links, marc.


"Marc" wrote in message
.. .
More to the point. the shackle you can fit to the chain is weaker
than the chain. Buy your rated chain from an industrial sling mfg. and
have them put an oversize link at each end. (small extra charge). Now
you will be able to fit the proper sized and rated shackle.



On Thu, 17 Jun 2004 09:44:54 -0400, Martin Baxter
wrote:


Another anchor question: Why don't we use quick links rather than

shackles to attach the rode to the anchor?

Seems to me that the same size quick link is about 20% stronger than it's

shackle equivalent, and if you tighten the closure nut with a wrench there's
no way for it to work open. Even if you only tighten by hand and by some

miracle (fish with fingers, crafty crabs?) it manages to work open, you
still
won't lose connection so long as there is some tension on the rode.

Cheers
Marty



  #3   Report Post  
Scott Vernon
 
Posts: n/a
Default To shackle or Quick Link?

Who told you this crap Mark, bob**** the shackle expert?
I'm not familiar with BBB chain, but proof coil and HT will take a shackle
pin 2 sizes (2/16'') BIGGER. In fact, everything I've read says to use a
shackle the next size up from the chain.

--
Scotty
S/V Lisa Marie
Balt. MD USA



"Marc" wrote in message
...
According to the BBB chain dimensions in the following link
http://www.pyacht.net/online-store/s..._bbb_chain.htm
neither a 3/8" shackle or a 3/8" quick link will pass through 3/8' bbb
chain. You must go 1 size smaller. hence the suggestion to install
oversized end links from an industrial supplier of load rated chain.

This factoid is true for all shapes and sizes of chain, proof , ht,
bbb, and is one of the dirty little secrets of the anchor rode
packages offered by marine retailers.

After the anchor breakout force rating, the shackle is your weakest
link



On 17 Jun 2004 14:48:20 GMT, "Scott Vernon"
wrote:

he was asking about quick links, marc.


"Marc" wrote in message
.. .
More to the point. the shackle you can fit to the chain is weaker
than the chain. Buy your rated chain from an industrial sling mfg. and
have them put an oversize link at each end. (small extra charge). Now
you will be able to fit the proper sized and rated shackle.



On Thu, 17 Jun 2004 09:44:54 -0400, Martin Baxter
wrote:


Another anchor question: Why don't we use quick links rather than

shackles to attach the rode to the anchor?

Seems to me that the same size quick link is about 20% stronger than

it's
shackle equivalent, and if you tighten the closure nut with a wrench

there's
no way for it to work open. Even if you only tighten by hand and by

some
miracle (fish with fingers, crafty crabs?) it manages to work open, you
still
won't lose connection so long as there is some tension on the rode.

Cheers
Marty



  #4   Report Post  
Capt. Mooron
 
Posts: n/a
Default To shackle or Quick Link?

Bang on the Mark Scotty.... and Never use a screw type link. The threads
strip in a hurry with very little force and then the entire unit straightens
out! I speak from experience here!

CM

"Scott Vernon" wrote in message
...
| Who told you this crap Mark, bob**** the shackle expert?
| I'm not familiar with BBB chain, but proof coil and HT will take a shackle
| pin 2 sizes (2/16'') BIGGER. In fact, everything I've read says to use a
| shackle the next size up from the chain.
|
| --
| Scotty
| S/V Lisa Marie
| Balt. MD USA
|
|
|
| "Marc" wrote in message
| ...
| According to the BBB chain dimensions in the following link
| http://www.pyacht.net/online-store/s..._bbb_chain.htm
| neither a 3/8" shackle or a 3/8" quick link will pass through 3/8' bbb
| chain. You must go 1 size smaller. hence the suggestion to install
| oversized end links from an industrial supplier of load rated chain.
|
| This factoid is true for all shapes and sizes of chain, proof , ht,
| bbb, and is one of the dirty little secrets of the anchor rode
| packages offered by marine retailers.
|
| After the anchor breakout force rating, the shackle is your weakest
| link
|
|
|
| On 17 Jun 2004 14:48:20 GMT, "Scott Vernon"
| wrote:
|
| he was asking about quick links, marc.
|
|
| "Marc" wrote in message
| .. .
| More to the point. the shackle you can fit to the chain is weaker
| than the chain. Buy your rated chain from an industrial sling mfg.
and
| have them put an oversize link at each end. (small extra charge). Now
| you will be able to fit the proper sized and rated shackle.
|
|
|
| On Thu, 17 Jun 2004 09:44:54 -0400, Martin Baxter
| wrote:
|
|
| Another anchor question: Why don't we use quick links rather than
| shackles to attach the rode to the anchor?
|
| Seems to me that the same size quick link is about 20% stronger than
| it's
| shackle equivalent, and if you tighten the closure nut with a wrench
| there's
| no way for it to work open. Even if you only tighten by hand and by
| some
| miracle (fish with fingers, crafty crabs?) it manages to work open, you
| still
| won't lose connection so long as there is some tension on the rode.
|
| Cheers
| Marty
|
|
|


  #5   Report Post  
Jeff Morris
 
Posts: n/a
Default To shackle or Quick Link?

The quicklinks are handy to have because they are easy to put on, no parts to
drop, etc. However, its also hard to see of they're working loose, while a
shackle can be wired or cable tied and its obvious of they're coming apart.

Be a bit careful comparing numbers - some are "working load" and others are
"breaking strength." I think for chain and shackles "working load" is define as
25% of breaking strength. Also, you want to consider the failure mode - a quick
link can deform making it hard to take apart.

BTW, why not use a swivel to connect to the anchor? Maybe your Danforth won't
pull out as much if it had a swivel.

interesting link:
http://www.suncorstainless.com/sscart/pdf/rigging.pdf


"Martin Baxter" wrote in message
...

Another anchor question: Why don't we use quick links rather than shackles to

attach the rode to the anchor?

Seems to me that the same size quick link is about 20% stronger than it's

shackle equivalent, and if you tighten the closure nut with a wrench there's
no way for it to work open. Even if you only tighten by hand and by some

miracle (fish with fingers, crafty crabs?) it manages to work open, you still
won't lose connection so long as there is some tension on the rode.

Cheers
Marty





  #6   Report Post  
Martin Baxter
 
Posts: n/a
Default To shackle or Quick Link?

Jeff Morris wrote:



Be a bit careful comparing numbers - some are "working load" and others are
"breaking strength." I think for chain and shackles "working load" is define as
25% of breaking strength. Also, you want to consider the failure mode - a quick
link can deform making it hard to take apart.


I was aware and considered working load, not breaking strength, your 4 to 1 figure is the
one usually used for chain and chain fittings.

BTW, why not use a swivel to connect to the anchor? Maybe your Danforth won't
pull out as much if it had a swivel.


Can't see how that would help.

interesting link:
http://www.suncorstainless.com/sscart/pdf/rigging.pdf


Hope Bob checks it out, he could use the extra heave thimbles on his mooring lines.

Cheers
Marty

  #7   Report Post  
Bobsprit
 
Posts: n/a
Default To shackle or Quick Link?

Hope Bob checks it out, he could use the extra heave thimbles on his mooring
lines.

I don't have mooring lines.

RB
  #8   Report Post  
Scott Vernon
 
Posts: n/a
Default To shackle or Quick Link?


"Bobsprit" wrote in message
...
Hope Bob checks it out, he could use the extra heave thimbles on his

mooring
lines.

I don't have a boat.

RB


  #9   Report Post  
Bobsprit
 
Posts: n/a
Default To shackle or Quick Link?

Scotty wrote..

I don't have a boat.


Nope. You have a Siedlemann, which is sorta shaped like a boat.

RB
 
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