Ground anchors

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Ground anchors

Postby bat » 02 Jul 2018, 18:22

silverbullet wrote:Misfortune!
Tell us more about those anchor pins...


Not much to say about the pins, army surplus large tent pegs brought on e-bay
http://www.ebay.co.uk/itm/British-Army-Heavy-Duty-40cm-Steel-Peg-Single-x6-x10-x14-Tent-Gazebo-Marquee/323095687286?ssPageName=STRK%3AMEBIDX%3AIT&var=512309652927&_trksid=p2060353.m2749.l2649

Image

The soft shackle also came from EBay
http://www.ebay.co.uk/itm/Soft-Shackle-12690Kg-breaking-strain-Large-size-Massive-strength-WINCH-IT/251819630996?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649

The ground anchor plate is aluminium flat bar 80mm x 15mm with 32mm holes
I have put more holes than pegs encase there is an obstacle in the way when driving the pegs in (I could also put more pegs in if necessary)
I still need to chamfer of the edges of the holes as they are a bit sharp.

I was hoping to get to test them at Syncropendence but that wasn’t to be.

They can be used singly or in pairs.
The one's we have in our cave rescue kit are fitted with a hard-shackle they are also steel and very heavy.

Image Image


Image Image

Normally the pegs would be driven in further, but then I would have had to get them out.

Comments and thoughts welcome

Regards Gary
http://www.thebeast.blog/ Sheila's & Gary’s long term project a 1988 RHD diesel syncro camper van.
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Re: Ground anchors

Postby silverbullet » 02 Jul 2018, 18:36

Its all good info Gary and I am all for drawing in experience and knowledge from other sources!

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Re: Ground anchors

Postby HarryMann » 10 Jul 2018, 08:39

Thanks Gary..
The other plough type that Ian has repaired is at Aidans if anyone wants to try it begore next year.
We should have another recovery workshop then ?
I hope to copy roughly yours bybthen too having found a few heavy steel pegs.

Please drop me a PM when you discover what failed with your clutch.thanks
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Re: Ground anchors

Postby bat » 10 Jul 2018, 13:46

HarryMann wrote:Thanks Gary..
The other plough type that Ian has repaired is at Aidans if anyone wants to try it begore next year.
We should have another recovery workshop then ?
I hope to copy roughly yours bybthen too having found a few heavy steel pegs.

Please drop me a PM when you discover what failed with your clutch.thanks


Hi
Haven’t don any more with the ground anchor yet, however I've got some 25mm x 20mm aluminium flat bar which I intend to make some lightweight pegs out of, (That’s why the hols on the plates are quite big) I'm hoping to put a spiral twist in them so they are drive in, screw out should also be half the weight or less than the steel ones. Will post some photos if I am successful. (this project requires me to learn to weld aluminium as they need lumps on the end)

The problem with the clutch is inside the bell housing, I should know more shortly, as the van is off to Doug’s as soon as he has space on the ramp. Thanks for your time on the phone and advice. I will try to post some photos of the problem if possible and how it was fixed.

Regards Gary
http://www.thebeast.blog/ Sheila's & Gary’s long term project a 1988 RHD diesel syncro camper van.
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Re: Ground anchors

Postby Jim San » 10 Jul 2018, 14:31

I really like this idea, much lighter and easier to carry than the ground anchor/plough.

The steel pegs could have eyelets welded below the head - so they can easily pulled up/out using the van if needs be (to make it easier).

I'd go for something like this if I had a winch :ok
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Re: Ground anchors

Postby bat » 10 Jul 2018, 15:32

It may be a bit controversial but I am wondering if a winch is actually necessary.

Having acquired a tirfor winch (TU16)and cable (from e-Bay) I am thinking I may have wasted my money
The winch is rated to pull 1600 kg and together with the cable weigh around 32kg, plus I still need to carry some pulleys and rope.

Given the weight and strength of synthetic rope, with a few extra double /treble pulleys, and extra rope it may be possible to do the same by hand at a fraction of the weight.
I’ve also been considering the hand-cranked capstan winches something similar to those used on boat rigging, possibly on a movable mounting point.

I have the first two options available, so will experiment when I get time, and post my results. (will also watch e-bay for a cheap capstan winch)

Any thoughts welcome

Regards Gary
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Re: Ground anchors

Postby silverbullet » 10 Jul 2018, 17:13

32kg is quite enough to put your back out or worse! I wouldn't like to heave that about and have to stow it away afterwards (too much lumbar spine aggro as things are)
A handful of swingcheck pulleys and a rope, some steel pins and a lump hammer: light, simple, slow & steady.
Recovery shouldnt be done in a rush anyway? Take time to assess the situation and do it right at the first attempt.
Would a mattock or similar and a fulcrum block not do for drawing those steel pins out?

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Re: Ground anchors

Postby bat » 10 Jul 2018, 20:07

Hoping to cannibalise one of these to make an extractor.

Image

something like this (sorry for the pore mockup photo)

Image

the hole in the base of the spade part being used a bit like a claw hammer

Regards Gary
Last edited by bat on 11 Jul 2018, 09:49, edited 1 time in total.
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Re: Ground anchors

Postby silverbullet » 11 Jul 2018, 07:29

Second photo link broken?

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Re: Ground anchors

Postby bat » 11 Jul 2018, 09:54

silverbullet wrote:Second photo link broken?

Sent from my S60 using Tapatalk


Fixed I think
Sorry forgot to take the S of the HTTPS(photos nothing special )

Regards Gary
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Re: Ground anchors

Postby clift_d » 11 Jul 2018, 10:40

Wouldn't it just be simpler to get some pegs with a hook end so that you can just use any rod, or even another peg to lever them out?

http://r.ebay.com/duNYfB

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Re: Ground anchors

Postby bat » 11 Jul 2018, 15:32

clift_d wrote:Wouldn't it just be simpler to get some pegs with a hook end so that you can just use any rod, or even another peg to lever them out?

http://r.ebay.com/duNYfB

Image


Using steel you are probably right however, I am hoping to make them in aluminium so any force/ blows to the end of them will need to be down the centre line.
I think hitting the loop off the centre line of the peg will destroy the ally peg, however welding a loop to the side below the top is something worth considering.

My current thinking is to weld two short bits (about 50mm) of the 20mm x25mm bar to the sides of the peg to form a lump.
I am aiming to make the peg about 400mm-500mm long, so similar to the steel pegs I already have.
The hardest part will probably be putting the twist down the length of the peg, so they are drive in, screw out.

Suggestions always welcome (Especially on putting a uniform twist in aluminium bar)

Regards Gary
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Re: Ground anchors

Postby bene » 13 Jul 2018, 08:36

HarryMann wrote:Thanks Gary..
The other plough type that Ian has repaired is at Aidans if anyone wants to try it begore next year.
We should have another recovery workshop then ?
I hope to copy roughly yours bybthen too having found a few heavy steel pegs.

Please drop me a PM when you discover what failed with your clutch.thanks


Clive - how about a recovery workshop at Adventure Overland in September?
I will have both Tirfor winches then... (One of which will be for sale).
Snatch block, cable, soft shackles etc...
More than happy to donate my stuff for a workshop.
Cheers
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Re: Ground anchors

Postby silverbullet » 13 Jul 2018, 16:39

bat wrote:
clift_d wrote:Wouldn't it just be simpler to get some pegs with a hook end so that you can just use any rod, or even another peg to lever them out?

http://r.ebay.com/duNYfB

Image


Using steel you are probably right however, I am hoping to make them in aluminium so any force/ blows to the end of them will need to be down the centre line.
I think hitting the loop off the centre line of the peg will destroy the ally peg, however welding a loop to the side below the top is something worth considering.

My current thinking is to weld two short bits (about 50mm) of the 20mm x25mm bar to the sides of the peg to form a lump.
I am aiming to make the peg about 400mm-500mm long, so similar to the steel pegs I already have.
The hardest part will probably be putting the twist down the length of the peg, so they are drive in, screw out.

Suggestions always welcome (Especially on putting a uniform twist in aluminium bar)

Regards Gary
Making "barley twists" isnt easy for starters (oxy/acetylene hot work and big tools) and then you'll have to heat treat them or they will be soft as a very soft thing.
I really wouldn't bother, just to save a few kg...
The MOD pegs look like the dog's back wheels. No expense spared and made to a spec, not down to a price.
Bent over bar ones will just curl over/unwrap when the going gets tough (just when you dont want them to fail)
IMHO ;)

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Re: Ground anchors

Postby garyd » 14 Jul 2018, 15:02

Gary,
on the point of extracting pins - the big military anchor pins I used in the past have a hexagonal section and a hole through near the top. This enables a spare pin to be inserted and the driven pin to be rotated. The corners of the hexagon open out an over-size round hole and the pin can be pulled much more easily.

Given your nearly square aluminium pins, perhaps a holed flag welded near the top would allow a similar method of extraction?
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