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Thanks for the ideas.
The 3,2,1 Star Picket version - with a load capacity of only 2100kg - is that enough for a heavily bogged heavy full sized 4wd - do you just pull the pickets out of the ground.
Same comment on the hedghog - will it actually hold?
No one has mentioned ground anchors - anyone actually used them?
Cheers
Garry
We used to tap them back out with the same small lumphammer we hammered them in with. If there was a stuck peg, we'd lever it out with another peg. We never had any problems.Quote:
Originally Posted by chazza
Considering we used them in limestone mountains, we rarely ran into such problems. The holes in the hedgehog were big enough that you had a certain amount of wiggle room and could angle the peg off in different directions if you did strike a rock. And there were enough holes in the hedgehog that you could easily afford to miss a few. I agree that they aren't suitable to 100% of situations, but I'd be confident that they'd get you out of trouble 90% of the time. Again I'm referring back to climbing techniques here, but if the ground were hard enough that I couldn't get an ground anchor in, then I'd probably be looking for a rock to get a sling around, or a crack in the rock to get a chock into and anchor off of that. I'm not claiming any massive 4x4 experience here, you aussies are the experts at that :D I'm just looking at the problem from a different point of view. I do like your stake idea though, I guess it's all the same principle really - distribution of load. On a slightly different topic, we had to do many courses on this kind of stuff many moons ago, and there is an optimum angle between your anchor points, which if exceeded, significantly decreases the effectiveness of the anchor point, and increases the chance of it getting ripped out (and in the case of winching out a truck, getting planted through your windscreen). I'll see if I can get the material emailed to me - it makes for an interesting read.Quote:
Originally Posted by windsock
I would, and have done in the past, bet my life on it.Quote:
Originally Posted by garrycol
I've never used these, but they look very similar to what we use in snow rescue - we call them dead man anchors. The key is getting the correct angle on them - too shallow and they pull out, too steep and they rip the ground up like a plough. Get them in at 45 degrees and you have a rock solid anchor to work from.Quote:
Originally Posted by garrycol
Do a google search under "Ground Anchor Plates"
I saw a demo of this:
https://www.aulro.com/afvb/images/im...10/09/1603.jpg
At a boat show, and was very impressed. It's called a SARCA ground anchor.
Super SARCA Anchor - anchorright.com.au
There was a good video on how it works, and how it is better than normal ground anchors, but I can't find it yet.
Did that - some companies selling them but virtually nothing on experiences on how well they work or do not work.Quote:
Originally Posted by Hymie
Garry
This gets good reports from people in the UK who do winch comps:
X-eng High Performance Off-Road Engineering
what you're calling a hedgehog I call a herring spine and when its pegged in its a herring bone anchor.
each link of 4 pegs (on the ones I get hold of) is rated to 250kg in softish sand and 500KG in medium clay and up to 1000KG in hard clay, its an operator experience how you call the ground, with a suitable jackhammer you can drive the buggers into roads and concrete slabs if you need to. (never had to and I dont want it back if I do) the pegs are about 18 inches long.
they work well but are not (IMHO) as versitile as a set of star pickets and a good roll of fencing wire to windlass it all together with.
I dont rate those ground plough anchors for anything but sand/light clay work Ive seen a couple of instances where they've bumped into something and "bounced" free while under tension.
It's been a long while since this one has come up.
http://www.aulro.com/afvb/general-ch...d-anchors.html
http://www.aulro.com/afvb/general-ch...nd-anchor.html
What we used to call a Ground Anchor or Earth Anchor Holdfast to a reccce mechQuote:
Originally Posted by Blknight.aus
yeah, but from memory the ADF ones have the 6 hole configuration and a higher load holding per anchor. The old bloke who lends me his when I'm going to play anchor man insists they are herring bone anchors (the pegs angle much like when you do a herringbone halt in convoy) and the name sort of stuck for me... (especially when I want to borrow them)
Ive got a rough knock of up of one done in 6mm plate drillled to take the old 113 track pins. If a set of the ones from a wrecker were to fall off the side of the truck..............