Member Since: 02 Dec 2005
Location: Bradford, West Yorkshire
Posts: 6100
Synthetic Winch Line - What rating??
Does anyone know if there are simple guidelines regarding winch line SWL's (Safe Working Limits)?
I have ordered a synthetic line to replace the steel cable and have been told the SWL is 7000kgs which I assumed to be plenty as most of my strops and shackles are rated to this much. However another source has told me that I should be looking at a line with at least 10000kgs SWL.
Anyone know how to calculate such things? Assume a lot depends on the use of the winch and whether snatch blocks are deployed etc etc2020 BMW X1 18d XDrive X-Line Auto
9th Dec 2008 6:07 pm
AndrewS Tarquin of the Desert
Member Since: 06 May 2005
Location: Y...... because I can
Posts: 10438
SWL = Safe Working Load
12mm thick synthetic rope should be OK. But then again I witnessed 4 12mm thick synthetics break this weekend at Santa's and they were attached to light challenge trucks not a 2.7 tonne D3In the Beginning there was nothing, which exploded.
9th Dec 2008 6:12 pm
UNG
Member Since: 20 Jun 2008
Location: Lancs
Posts: 753
With regard to SWL's some are quoted as pull loads and some are quoted as lifting loads it may be worth checking what they are quoting.
Lifting equipment used in winching situations can be used above it's rated load as it has a large safety margin for lifting use
As for snapping plasma's it all depends how much maintenance and abuse you give it IMO"Never keep up with the Joneses. Drag'em down to your level. It's cheaper".
9th Dec 2008 6:35 pm
CFB
Member Since: 02 Dec 2005
Location: Bradford, West Yorkshire
Posts: 6100
Oops my mistake, cheers Andrew.
The rope I have is 10mm, will have to try it and see how it fares. Won't be doing any seriously difficult recovery work but need to know it is at least suitable for most situations.2020 BMW X1 18d XDrive X-Line Auto
9th Dec 2008 6:35 pm
AndrewS Tarquin of the Desert
Member Since: 06 May 2005
Location: Y...... because I can
Posts: 10438
UNG wrote:
how much maintenance and abuse you give it IMO
same with all equipment I suppose In the Beginning there was nothing, which exploded.
Hi,
Products rated for lifting normally have a SWL figure (Safe Working Load) displayed on them on normally near the eye at one end.
There should also be a SF (safety factor) indication in the same place, normally 7:1
Thus a pruprle strap SWL 1000k & SF of 7:1 is acceptable for pulling applications on a D3 depending how it is rigged.
In a straight pull the SWL & SF apply, when doubled up these figures can be doubled.
However there are certain rigging set ups that lessen the standad figures. The most common of these is when the strap is used as a "choker". This lessens the standard figures by about 25%
Straps that are not rated for lifting would normally display a minimum breaking strain. This figure
is the load that one should expect to be able to put on the equipment without a failure.
Getting back to your winch cable , your supplier should be able to specify the minimum breaking strain of the cable. If he can't then I wold be dubious about the product.
Hope this helps.
Non Stick NickI am a hob nobber.
9th Dec 2008 7:23 pm
10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
What's the rating of your winch? the rope should not be less than that, if you intend to use it for 3rd party recovery, stick with the steel!
9th Dec 2008 9:40 pm
CFB
Member Since: 02 Dec 2005
Location: Bradford, West Yorkshire
Posts: 6100
Winch is rated at 9500lbs which is 4310 kilos, rope is Dyneema 60 which is rate at 7000kgs so should be fine I reckon.2020 BMW X1 18d XDrive X-Line Auto
9th Dec 2008 9:47 pm
AndrewS Tarquin of the Desert
Member Since: 06 May 2005
Location: Y...... because I can
Posts: 10438
CFB wrote:
Winch is rated at 9500lbs which is 4310 kilos, rope is Dyneema 60 which is rate at 7000kgs so should be fine I reckon.
Until your winch drum gets hot and melts the rope In the Beginning there was nothing, which exploded.
You need a sleeving on it so it dose not melt Land Rover use them at Eastnor we did our winch training with them but you do need to keep an eye on them and wash them to get the grit and muck outHome of RLD Hidden winch mounts Spare wheel Locks Trailer Body Fabrication [email protected] D3/4 sump plates MY 14 sump plates and the Discovery Sport wheel protectors Discovery 5 wheel locks
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9th Dec 2008 10:04 pm
ronp
Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15220
AndrewS wrote:
But then again I witnessed 4 12mm thick synthetics break this weekend at Santa's Challenge
Now that wasn't the 12mm synthetic holding up your sexy white stockings then was it Andrew?
I was a normal heterosexual chap, but in these new woke awakenings I now identify as a Wardrobe.
9th Dec 2008 10:24 pm
CFB
Member Since: 02 Dec 2005
Location: Bradford, West Yorkshire
Posts: 6100
It has a protective sleeve on the first few wraps on the drum, also I use a Superwinch EP9 which has a brake on the motor not the drum so it doesn't get too hot 2020 BMW X1 18d XDrive X-Line Auto
9th Dec 2008 11:12 pm
AndrewS Tarquin of the Desert
Member Since: 06 May 2005
Location: Y...... because I can
Posts: 10438
ronp wrote:
AndrewS wrote:
But then again I witnessed 4 12mm thick synthetics break this weekend at Santa's Challenge
Now that wasn't the 12mm synthetic holding up your sexy white stockings then was it Andrew?
So you thought they were sexy did ya In the Beginning there was nothing, which exploded.
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this weekend at Santa's and they were attached to light challenge trucks not a 2.7 tonne D3
Law of Mechanical Repair:
