Kinetic rope,

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gstuart said:
daft question if i may

are u supposed to let KERR strops rest after being used , or is that an old wives tail

thks
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Sort of. They can be used a number of times directly after each other, but letting the rope relax allows it to recover better, like the muscles in your body ... stretch them too much and they tighten up and lose some elasticity, let them recover a while and they regain it. There will always be a limit to the number of times a Kerr will be effective as a Kerr due to the fibres becoming 'plastic', rather than elastic and effectively losing their ability to multiply the momentum gained from driving steadily away.
 
Paul D said:
Ah, no problem. Both links are Kerr's ropes, but the first one is a newer version. The 'woven' look one from Paddocks is what most people understand as a 'proper' Kerr system.

Kerr systems also come as straps, which have contrast 'bands' sewn into them that when they are broken (just the different colour strands) show the rope should not be used for KERR as it's become over stretched and lost a lot of it's integrity and elasticity..
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Cheers, Paul. Lack of knowledge on my part, but learning all the time. The word 'snatch' in one description made me presume there was another difference between the two.
 
I think it's the word 'snatch' that confuses people.

KERR Kinetic energy recovery, steadily increasing energy buildup and release, uses a properly made rope.

Snatch, drive away fast as feck and hope it all sticks together 'cos it uses anything to connect the vehicles, ropes, strops, chains, or a combination of them, and has little to no elasticity in the system so the energy transfer is immediate and often catastrophic.

Some people refer to a Kerr as a snatch rope and vice versa without really understanding the differences, even though they are not subtle differences!

Many people use normal ropes or straps/strops/chains and try to snatch a vehicle out, without understanding how large and immediate the transfer of energy is. A proper Kerr recovery is a pretty gentle thing when done right, though it still carries a lot of energy through the system. When done correctly there's definitely a lot less danger in a Kerr than snatch recovery.
 
goonarmy said:
I don't like kenetic recoverys. Winch or tow or dig if you need to. You can always connect additional vehicles.
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is suprising how many times u see someone try and do a grand prix style take off with the strop attached

like those ground anchors and also the tree strops , but know it takes time to learn how to recovery a vehicle properly without sending a shackles flying

know the kenitec ropes in the right hands can be very effective, but scare the life out of me so just have ordinary strops
 
Muppetdaze said:
So what's wrong with a normal rope? Or cable?
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Rope has only a little 'give' so needs slack taken up first, and try to pull whatever's stuck out without snatching. The little give it has isn't enough to multiply momentum like a Kerr, but is mostly enough to stop a full shock load and is less potentially destructive than a strap/strop or chain. A rope is also effective as a tow rope, or as an anchor for a winch vehicle.

A cable, I presume you mean a winch type steel cable, is an accident waiting to happen. Minimal give until heavily loaded, but it does stretch a little when used as it's mass creates lot's of potential energy storage such that when/if it breaks it can make the shackles/whatever's on each end, a deadly (literally) missile. If a cable has to be used at least one blanket or heavy 'soft' thing draped over it can mitigate this flying about. A better mitigation is to have a couple of tethers a few feet from each end of the cable going back to a different mount point to the cable so that if an end does break the cable is held from flying by the tether. Even then a blanket in the centre might help if the cable snaps in the middle. The only thing I think a steel cable is good for these days is as a last resort. Or is used in a Tirfor or a properly managed, maintained and warranted crane system ... And if you see anyone using a steel cable, my advice is to keep well away, at least the full length of cable being used and behind something, and take videos.
 
This has been an interesting read. I bought this set Amazon product

Hadn’t realised there was a difference between snatch and kinetic, I have added some higher rated shackles to the set but I’ll certainly ensure I’ll be very gentle with the snatch strap if I have to use it. I don’t intend to go anywhere that’s going to get me stuck but there’s always a chance.
 
I do like these 'Rated at 20 ton' claims made by companies who sell their tat to unsuspecting 4x4 owners...

Do these items come with a certificate to show they have been properly tested, or do you actually believe their claims?

Oh, that kit comes with some gloves - Nice - and a natty little bag to put it all in - Cool - and all for £60 - Sweet...
 
JohnM70 said:
I do like these 'Rated at 20 ton' claims made by companies who sell their tat to unsuspecting 4x4 owners...

Do these items come with a certificate to show they have been properly tested, or do you actually believe their claims?

Oh, that kit comes with some gloves - Nice - and a natty little bag to put it all in - Cool - and all for £60 - Sweet...
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The latter part were my thoughts exactly, had no idea what to buy and this seemed to solve the problem, hindsight being a wonderful thing and all that. On the upside it was at least not a huge investment if I need to get something more serious at some point. They look well made but for £60 you’re getting a lot for not much money. I can’t recall if there was a certificate or not.

My laneing trips have mostly been with a tour group so I would be unlikely to need them there, any other trips have been in pretty easy stuff. If I start doing anything more serious I probably need to purchase something else.
 
All my "old" kit was certified due to the work I done. This cert does not always mean it is well made or well thought out for use In thick mud.
& the cost of getting it re-inspected.:mad: This got beyond a joke. Sometimes easier to buy new.
Buy what you need & learn from experience.
Good luck
 
AdamD1 said:
My laneing trips have mostly been with a tour group so I would be unlikely to need them there, any other trips have been in pretty easy stuff. If I start doing anything more serious I probably need to purchase something else.
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You've already done more than some people in preparing yourself at all.
 
AdamD1 said:
This has been an interesting read. I bought this set Amazon product

Hadn’t realised there was a difference between snatch and kinetic, I have added some higher rated shackles to the set but I’ll certainly ensure I’ll be very gentle with the snatch strap if I have to use it. I don’t intend to go anywhere that’s going to get me stuck but there’s always a chance.
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There's lots of confusion. Snatch is a recovery technique and kinetic energy recovery rope is used to make a snatch recovery safe(r).

The 9m 'snatch' strap in your link will be KERR
 
blue beasty said:
The 9m 'snatch' strap in your link will be KERR
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Hi BB,

Is that a known certainty or an educated guess?
Only ask because you do see normal tow ropes advertised as kinetic in the title and then further down the description, " NOT A KINETIC rope". there is a lot of misleading stuff being sold out there.

See ebay number
272919404880


Cheers
 
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JohnM70 said:
Do these items come with a certificate to show they have been properly tested, or do you actually believe their claims?
Click to expand...

Coming to a market near you...soon..maybe.:p:p

I have some baling twine in , orange or blue, customers choice of colour / choice of length , short lengths will be knotted together to achieve length required / Certificate will be supplied in crayon and use a john bull stamping kit to put a BS stamp on it. As known by all agricultural workers: 1 cord of Baling twine has a Breaking strain of 2 Tonnes* ( see point 1 ), so multiple lengths can be added together to achieve the required maximum breaking strain ...NO LIMITS...... Honest Guv....:confused:

Point of note:
1) * Breaking strain has a tolerance of +0 Tonnes - 1.98 Tonnes.

Cheers
 
neilly said:
Hi BB,

Is that a known certainty or an educated guess?
Only ask because you do see normal tow ropes advertised as kinetic in the title and then further down the description, " NOT A KINETIC rope". there is a lot of misleading stuff being sold out there.

See ebay number
272919404880


Cheers
Click to expand...

I googled Noryb snatch strap and it's stated is 100% nylon with a max elasticity of 20%. It's designed for kinetic recovery and not generally recommended for freewheel towing or winching

The tree protector and winch extender will be polyprop/polyester/mix and isn't elastic like nylon
 
blue beasty said:
I googled Noryb snatch strap and it's stated is 100% nylon with a max elasticity of 20%. It's designed for kinetic recovery and not generally recommended for freewheel towing or winching
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Yeah , I did the same, but noticed the one I found had different dimensions. Plus the first review did not sound impressed... Second seems to love it..LOL
Amazon product

I sent a message to Noryb to confirm , will see what they reply with. But when their description has an error like this....
Made for heavy duty use with a width of 100mm which results in a minimum breaking strain of 12000kg (26500lbs / 13.2 tonne).

Does make me wonder??

Cheers
 
Well the reason they use the word 'Kinetic' is because it's the Fashionable thing at the moment, so their rope will show up in searches for Kinetic,
Personally I prefer "Frenetic assistance", that's when you run around like a headless chicken because the Ebay cheap Chinese rope has stretched , snapped and decapitated the pedigree black labrador a passer-by was walking, your eight year old daughter is screaming about the dog, the passer-by's husband is threatening you with all sorts of mayhem, the community support officer arrives on his bicycle and gets assaulted for trying to calm the Dog walkers down, you frantically trying to slip mud ladders under the back of the car while the daughter still raises merry hell. Finally you free the vehicle and escape, seeing flashing blue lights approaching the area in your rear view mirror, thank god the mud hid your plates. Your Daughter is now just curled into a ball and sobbing in the back, Now onto Amazon to buy another cheap rope and you and your eight year old are ready for next Sunday's green-laning, perhaps in a different county..............

Oh and you can always put Bicycle inner tubes over the rope to help protect it from mud etc
 
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