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Jim
 


Member Since: 09 Sep 2005
Location: Aberdeenshire
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England 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3
Shackles

What would the reccommended size be for:

Arrow road towing
Arrow pulling someone out of mud
 Jim  
Post #2357718th Oct 2005 9:33 am
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Slimer
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Stronger the better in both cases
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Post #2357918th Oct 2005 9:39 am
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Jim
 


Member Since: 09 Sep 2005
Location: Aberdeenshire
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England 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

I guess that Smile

But what sizes are readily available?

I have found 2, 3.25 and 4.75 tonne so far.
 Jim  
Post #2358318th Oct 2005 9:45 am
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Slimer
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I keep 3 of the 4.75s in the car, a few places sell 6.x ones so I might add one of them too at some point
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Post #2358718th Oct 2005 9:57 am
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BN
 


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Slimer wrote:
I keep 3 of the 4.75s in the car, a few places sell 6.x ones so I might add one of them too at some point


At least double the weight of the car on a couple of shackles, i.e 6 tonnes.
  
Post #2358918th Oct 2005 10:05 am
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10forcash
 


Member Since: 09 Jun 2005
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United Kingdom 2007 Discovery 3 TDV6 HSE Manual Zermatt SilverDiscovery 3

BN wrote:
Slimer wrote:
I keep 3 of the 4.75s in the car, a few places sell 6.x ones so I might add one of them too at some point


At least double the weight of the car on a couple of shackles, i.e 6 tonnes.
The rating of shackles (for the tested ones) is for lifting, generally with a safety factor of three, also bear in mind that to be able to use them, they need to fit the recovery points - the 6T bow shackles are quite big....  
Post #2359018th Oct 2005 10:09 am
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Jim
 


Member Since: 09 Sep 2005
Location: Aberdeenshire
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England 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

BN wrote:
Slimer wrote:
I keep 3 of the 4.75s in the car, a few places sell 6.x ones so I might add one of them too at some point


At least double the weight of the car on a couple of shackles, i.e 6 tonnes.


So would that be 2 x 3.25 tonne Question
 Jim  
Post #2359418th Oct 2005 10:21 am
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BN
 


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Jim Last wrote:
BN wrote:
Slimer wrote:
I keep 3 of the 4.75s in the car, a few places sell 6.x ones so I might add one of them too at some point


At least double the weight of the car on a couple of shackles, i.e 6 tonnes.


So would that be 2 x 3.25 tonne Question


No I keep 6 tonne shackles Jim. In reality over enthusiastic retreival can be very dangerous. TFC found that his recovery snapped so easily when he became stuck and in no way was he really stuck. Go for the best you can afford with the best tensile strength.
  
Post #2362118th Oct 2005 2:11 pm
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Jim
 


Member Since: 09 Sep 2005
Location: Aberdeenshire
Posts: 215

England 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

With TFC Recovery point breaking, what did they then attach to?

Who are reputable makers of shackles, other than 'Black Rat' as these only go upto 4.75 tonne.
 Jim  
Post #2362518th Oct 2005 2:19 pm
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10forcash
 


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Jim Last wrote:
With TFC Recovery point breaking, what did they then attach to?

Who are reputable makers of shackles, other than 'Black Rat' as these only go upto 4.75 tonne.
Jim, it wasn't the recovery point, it was an old strop, although it was being used to 'snatch' not tow, which would have contributed to its failure
any shackles provided with a test cert. or traceable back to a proof test loading for that batch, will be OK
<edited to add: I got my 6.5 tonne ones from here http://www.forgetec4x4.co.uk/winchingequipment.html >
 

Last edited by 10forcash on 18th Oct 2005 2:27 pm. Edited 1 time in total 
Post #2362718th Oct 2005 2:20 pm
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Pelyma
  


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But a 4.75 ton can be a lot stronger than a 6 ton, it is only the working rating not its actual strength.
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Post #2362818th Oct 2005 2:22 pm
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10forcash
 


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Pelyma wrote:
But a 4.75 ton can be a lot stronger than a 6 ton, it is only the working rating not its actual strength.
yep, there is also the issue of wether a 6T shackle can be fitted onto vehicle recovery points, due to their size, I carry both 4.75 and 6.5T shackles, along with 10T strops  
Post #2363118th Oct 2005 2:30 pm
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Jim
 


Member Since: 09 Sep 2005
Location: Aberdeenshire
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England 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

Lizardlegs.com wrote:
Black Rat 4.7- tonne bow shackle broke at an impressive 33.7 tonnes’ load. We then performed the same test on a likewise randomly selected 3.2-tonne Black Rat bow shackle which, in turn, broke at a no less impressive load of 27.2 tonnes.

So are 'Black Rat' out performing many other makers? How would a Black Rat 4.75 shackle compare with some 6.5 tonne ones from other sources?
 Jim  
Post #2363518th Oct 2005 2:44 pm
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10forcash
 


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Jim Last wrote:
Lizardlegs.com wrote:
Black Rat 4.7- tonne bow shackle broke at an impressive 33.7 tonnes’ load. We then performed the same test on a likewise randomly selected 3.2-tonne Black Rat bow shackle which, in turn, broke at a no less impressive load of 27.2 tonnes.

So are 'Black Rat' out performing many other makers? How would a Black Rat 4.75 shackle compare with some 6.5 tonne ones from other sources?
provided you compare like-for-like, there should be very little difference, unless a manufacturer (or reseller, as I don't think BR actually manufacture anything, just buy in, brand & resell)is deliberately upping the safety factor or derating the SWL for their products  
Post #2363718th Oct 2005 2:52 pm
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Pelyma
  


Member Since: 06 Jan 2005
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From the articles I read this seems to be exactly what they are doing as they do appear to break at a lot higher load than others. But I'm not an engineer so someone maybe able to inform us for definite.
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Post #2364718th Oct 2005 3:28 pm
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