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Old 30-12-2013, 21:12   #61
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3/8" mantus chain hook, purchased from mantus web page:
Stainless = $48.00
Galvanized = $32.00
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Old 30-12-2013, 21:15   #62
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Re: Mantus chain hook

Quote:
Originally Posted by Bash View Post
Sherman Johnson snubber hook at WM. = $79.99
Soft shackle at WM = $27.99
Chain hook at WM = $7.49
Hardware store chain hook = $1.50
Soft Shackle at eBay = $14.95
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Old 30-12-2013, 23:57   #63
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Re: Mantus chain hook

Quote:
Originally Posted by Cotemar View Post
Soft Shackle at eBay = $14.95
Yip and add another $17 for shipping!

Still I have a hook and a rolling hitch is always an option. I am one of those who Sets the anchor and then when it feels good, set s the snubber. Easy enough to take in a bit of chain to set the snubber if in a very tight spot.

As to wear and tear my Samson post is real strong.http://www.cruisersforum.com/images/smilies/smile.gif
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Old 31-12-2013, 04:07   #64
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Re: Mantus chain hook

Quote:
Originally Posted by Cotemar View Post
Soft Shackle at eBay = $14.95
Soft shackle from a bit of dyneema lying around..

5 minutes
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Old 31-12-2013, 04:20   #65
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Re: Mantus chain hook

Quote:
Originally Posted by conachair View Post
Soft shackle from a bit of dyneema lying around..

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In this day and age, as basic a seamanship skill as a 3-strand eye splice.
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Old 31-12-2013, 05:05   #66
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Re: Mantus chain hook

Quote:
Originally Posted by thinwater View Post
In this day and age, as basic a seamanship skill as a 3-strand eye splice.
And incredibly useful all around the boat.

http://l-36.com/soft_shackles.php
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Old 31-12-2013, 15:05   #67
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Re: Mantus chain hook

Quote:
Originally Posted by Guy View Post
I thought this thing would be the greatest. Not so. In just one funky anchorage it ended up grabbing the chain a second time in it's jaw twice in just 2 weeks time. There was lots of bouncing around and of course tidal shifts. The chain ended up getting hooked in the jaw a second time and for some reason that caused everything to get twisted up into a mess. I had it on a 20' snubber on about 150' of chain in about 20' of water.
Back to a rolling hitch for me.
What size chain do you have, we will send you a plastic gate...
It will prevent any chance of this happening.....
Just email me your address and the size chain and we will hook you up
And guys be patient, it will take us a few days to catch up with all the gate requests... I just need a day to celebrate New Years.. And the printing will continue...
For this limited time its all free... New Years Gift....
Just remember the gate needs to be used with an "anchor shackle" for the proper fit....
1/4 hook 7/16 inch shackle 1/2 pin
5/16 hook 7/16 inch shackle 1/2 pin
3/8 hook 1/2 inch shackle 5/8 pin
1/2 hook 5/8 inch shackle 3/4 pin
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Old 31-12-2013, 15:38   #68
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Re: Mantus chain hook

We use a grab hook in the middle of a 1" bridle. The ends of the bridle are cleated to the port & starboard bow mooring cleats. We can shift the bow slightly port or starboard as needed and the strain is off of the windlass. We are too heavy for the rubber snubbers. Anchor rode is 320 ' of 7/16 G4 chain. Secondary anchor on chain/nylon 3-ply with rope gypsy.
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Old 31-12-2013, 16:01   #69
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Re: Mantus chain hook

Rubber snubbers are a bit of a waste of time or money anyway in an anchor bridle/snubber combination , whether you (the yacht) are heavy or not.

If you use a small one they use up all their elasticity at low loads, you would need 5 x 1 inch rubber snubbers (from memory they are standard length around 15 inches) to absorb the same energy of a 12mm x 10m long piece of nylon cordage. If you simply use one small one they will become ineffective at higher loads - all the stretch will have gone - and its at higher loads you need the elasticity.

(To put another way - if you consider 'catenary' to be overrated then rubber snubbers (unless you use 5 of them!) fall into the same category - all the usefulness disappears at winds over, say 30 knots, probably lower.)

Bigger rubber snubbers are obviously better, have not worked out (nor intend to) energy absorption capabilities.

Rubber snubbers, even small ones, are heavy and very expensive, compared to 12mm nylon.

They are excellent when used in marina mooring environment as their elasticity is contained in such a short length and the loads when attached to a pontoon should not be great. But as part of an anchor snubber system - there are infinitely better options.

Jonathan
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Old 31-12-2013, 16:04   #70
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Re: Mantus chain hook

Quote:
Originally Posted by Mantus Anchors View Post
What size chain do you have, we will send you a plastic gate...
It will prevent any chance of this happening.....
Just email me your address and the size chain and we will hook you up
And guys be patient, it will take us a few days to catch up with all the gate requests... I just need a day to celebrate New Years.. And the printing will continue...
For this limited time its all free... New Years Gift....
Just remember the gate needs to be used with an "anchor shackle" for the proper fit....
1/4 hook 7/16 inch shackle 1/2 pin
5/16 hook 7/16 inch shackle 1/2 pin
3/8 hook 1/2 inch shackle 5/8 pin
1/2 hook 5/8 inch shackle 3/4 pin
I'm currently using a 7/16" SS shackle with a 1/2" pin for my 3/8" chain, Mantus hook. Are you saying that the gate will not work with that shackle?
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Old 31-12-2013, 16:05   #71
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Re: Mantus chain hook

Quote:
Originally Posted by Nicholson58 View Post
We use a grab hook in the middle of a 1" bridle. We are too heavy for the rubber snubbers.
They make a rubber line snubber for 1" line.

Falcon Safety Mooring Line Snubber / Compensator - 7/8-1"
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Old 31-12-2013, 16:08   #72
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Re: Mantus chain hook

Quote:
Originally Posted by JonJo View Post
Rubber snubbers are a bit of a waste of time or money anyway in an anchor bridle/snubber combination , whether you (the yacht) are heavy or not.

If you use a small one they use up all their elasticity at low loads, you would need 5 x 1 inch rubber snubbers (from memory they are standard length around 15 inches) to absorb the same energy of a 12mm x 10m long piece of nylon cordage. If you simply use one small one they will become ineffective at higher loads - all the stretch will have gone - and its at higher loads you need the elasticity.

(To put another way - if you consider 'catenary' to be overrated then rubber snubbers (unless you use 5 of them!) fall into the same category - all the usefulness disappears at winds over, say 30 knots, probably lower.)

Bigger rubber snubbers are obviously better, have not worked out (nor intend to) energy absorption capabilities.

Rubber snubbers, even small ones, are heavy and very expensive, compared to 12mm nylon.

They are excellent when used in marina mooring environment as their elasticity is contained in such a short length and the loads when attached to a pontoon should not be great. But as part of an anchor snubber system - there are infinitely better options.

Jonathan
WOW, JonJo,
Not a word you said here is valid.
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Old 31-12-2013, 16:53   #73
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Re: Mantus chain hook

The maximum load you can apply to a 1 inch snubber is 280kg. The limit is set by the manufacturers - though you could go beyond this - but the snubber might break. The maximum energy that this snubber will absorb is 233 joules.

If we take a 5t yacht moving at 1kt, surging at anchor, then the energy of the yacht is 1250 joules.

In order to absorb that energy you would need 5 snubbers.

A nylon rope will absorb considerably more energy - a 10mm x 10m long rope will easily absorb 1250 joules. In fact the 10mm nylon rope can absorb over 7,000 joules but this will be at half its max elasticity - so lifespan might be short! You could use a thicker piece of nylon, which will absorb less energy at the same load but last much longer.

I have not checked how much snubbers cost in America, here they are expensive (and heavy) - maybe you can quote me for one snubber vs 10m of 10mm nylon (either 3 ply or anchor plait). Note to compete with energy absorbing capabilities of nylon you will need 5 x 1 inch rubber snubbers. Maybe you can also weigh a 1 inch rubber snubber and compare it with the weight of 10m of 10mm 3 ply

Jonathan
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Old 31-12-2013, 17:16   #74
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Re: Mantus chain hook

I use a high quality galvanized chain hook that's nothing fancy just like you would find on a logging skidder. It's randomly fallen off once or twice a year. I just got my SS Mantus 3/8 hook today and I really think it's gotta be a improvement. Nothing's perfect, but since it's got a bunch of metal where the old hook had none I think it's gonna be a winner. Sure it might come off, but that's life. Everyone here is so serious, lighten up guys. We're slackin off in the sun, life's good.
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Old 31-12-2013, 17:43   #75
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Re: Mantus chain hook

JonJo,

Rubber snubbers for 1" line cost $56 usd which is cheap.

Take that rubber snubber and put a 1” line through it and then around it three times and I will lift your cat out of the water any day of the week and bounce it like a rag doll.
Your numbers are all wrong as usual. Last year you told me I would break them after three anchoring’s.
I used them all season up to 45 knots. They eliminated the shock load from strong wind and waves.
I never had that feeling of sliding backwards and hitting a dead stop. Shock load gone.
They look as new as the day I put them on.

I hate to pour cold water on your enthusiasm.
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