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Rocovering from a winch bar
Posted: Fri Jan 28, 2005 10:55 am
by Mick G
Just had an ARB winch bar fitted (no winch yet) to my S2 Disco and am wondering which points are safe to snatch, winch and generally recover from. If anyone has any detailed pics of points or even where I can attach some that would be great.
I read somewhere that because the winch bar is air bag complient, I run the risk of inferfering with the air bag bits if I keep snaching or winching directly from the eyes on the winch bar?
All help, advice links appreciated.
Posted: Fri Jan 28, 2005 11:41 am
by grimbo
did you ask ARB to show you/tell you what were the appropriate points to use for recovery. Probably a better idea to get the facts directly from the horses mouth
ARB
Posted: Fri Jan 28, 2005 11:55 am
by Mick G
Yeah, I asked ARB and they reckon it is fine to recover off the points on the winch bar, although being new to 4x4 and hearing lots of differing opinions, the seed of doubt has been planted. Would like to know if anyone else has any thoughts or experience similar.
Cheers
Posted: Fri Jan 28, 2005 12:18 pm
by TuffRR
Newer ARB bars seem to strengthened in this area. I certainly wouldn't recommend recovering from the older style as the eyelet is easily pulled out. I can't say for sure about the newer strengthened ones but my gut feeling is i would rather use a securely fastened hook bolted through the bullbar and reinforced underneath.
The use of a hook also removes the need for a D shackle which i try and avoid using as much as possible when using snatch straps due to the energy stored in the strap. Imagine if the eyelet on the bar gave way with a shackle attached to it. I have seen some horrific pictures of when similar things have happened!!
Posted: Fri Jan 28, 2005 12:50 pm
by RoldIT
The ARB S2 bars have some pretty complicated AIRBAG crush cans fitted, don't think I'd be using anything on that bar to connect a shackle, especially in a snatch config.
Look into getting some points fitted directly to your chassis, er on the side of safety.
Recovery points
Posted: Fri Jan 28, 2005 1:37 pm
by Mick G
[Look into getting some points fitted directly to your chassis, er on the side of safety.]
I think this is the best way to go to avoid any dramas. Cheers for all the input.[/quote]
Posted: Fri Jan 28, 2005 2:48 pm
by HSV Rangie
dont fporget the triggers are usually chassy mounted thats why the bar is SUPPOSED to crush so that they fire.
Michael.
Posted: Fri Jan 28, 2005 4:33 pm
by Slunnie
9000lb winch through a snatch block generates 18000lb safe pull potentially through the bull bar which is about 8200kg and offset loaded. A Disco2 weighs 2300kg, and a snatch strap will break in half at 8000kgs.
My bullbar has had some pretty hard hits on the ground and into trees (rut driving), and I've read reports of high speed hits on Roos without the bar moving. The bar is mounted in a very solid manner. The mounts have a concertina in them though they dont seem to move - if anything a hit causing compression in them will move the bar back by only 4-5mm max. There are no electronics in the mounts.
I snatch off my bar using the eyelets either side of the winch fairlead and have never had a drama, though I have always done this in a sensible manner and kept the snatching/pulling in a reasonably forward direction - though I'm not pedantic about it. If you snatch sideways I think the eyelets will bend.
DONT use the factory recovery point. A mates tore out and carved up an LC80's rear 1/4 during a snatch operation.
Posted: Fri Jan 28, 2005 6:57 pm
by ISUZUROVER
The winch mount on an ARB bar is a seperate cradle that bolts to the chassis behind the "crush cans" or "concertina" crumple zone section. So when winching you don't put any real load on the front (aibag compliant) section of the bar except maybe some slight side loading through the fairlead.
I would only use recovery points mounted to parts of the bar/winch cradle/chassis that are behind the crumple zone section of the bar.
Posted: Sat Jan 29, 2005 3:41 am
by Team Raider
ISUZUROVER wrote:The winch mount on an ARB bar is a seperate cradle that bolts to the chassis behind the "crush cans" or "concertina" crumple zone section. So when winching you don't put any real load on the front (aibag compliant) section of the bar except maybe some slight side loading through the fairlead.
Sorry
you're incorrect on this matter. The TJM bar uses a cradle and soft Alloy crush cans.
The ARB uses a direct to bar mounting and the winch is mounted to the front plate of the bar ahead of the crush cans and in no way connected to the Chassis other than these.
Cheers!