Snatch & Mud, Oops.

Sorry Well, but your comment is a little misleading.
You put one eye through the eye of the other snatch strap and then you feed the other end of the first strap back through the eye of the second strap. A strong (25mm or slightly larger)stick between the two snatch straps will make it easier the pull them apart.
It is hard to explain on a key board but I think you know what to do.
The way you explain it, the stick would take the total load of the snatch and it would break.
Personally, I would never use a rolled op newspaper or magazine unless as a last resort.

You will never break the "Stick as you call it" if the timber is short and stout ie like a piece of pick handle. I have used this system on countless occasions with no problems. The hardest snatch was pulling a extended 10 seater troopcarrier with trailer attached up out of a creek crossing on the way into Iron Range and had 2 straps joined in this manner.

You do not feed the second strap through the eye only a loop of it, the "stick" goes through the loop across the eye then pulled tight.

To get the idea a little better pass the strap around a tree when the eye meets the strap again pass the a bit of the strap through the eye to make a loop the "stick" goes through this loop pull tight and there you have it.

Checking Stretch of Snatch Strap.

If all the Kinetic Energy of the Recovering 4WD is transferred to Elastic Energy in the Snatch Strap then the stretch of the strap can be determined. (Assuming no losses due to friction)

From Energy Conservation,

Kinetic Energy of Recovering 4WD = Elastic Energy in Snatch Strap
KE4WD=PEStrap
3472 J = 1/2 k x2
therefore x = 0.579m or approximately 6% extension.

And from Hookes Law the Force Stored in the Snatch Straps is,

F = kx
= (2.075 Tonne/m) (0.579m)
= 1.2 Tonne

Determine Speed of Shackle if Snatch Strap Breaks.

If all the Elastic Energy of the Snatch Strap is transferred to Kinetic Energy in the Shackle then the peak Speed of the Shackle as the Snatch Strap returns to it's 9.0m length can be determined. (Assuming no losses due to friction)

From Energy Conservation,
Elastic Energy in Snatch Strap = Kinetic Energy of 3.2 Tonne Shackle PEStrap = KEShackle
1/2 k x2 = 1/2 m v-squared where k = spring constant
x = distance stretched (meters)
m = mass of shackle (kg)
v = velocity of shackle (m/s)
1/2 (20750N/m) (0.579m)-squared = 1/2 (0.68kg) v-squared
v = 101m/s

or Peak Speed of Shackle v = 364 km/h

Thanks for the pics Truckster, yeah snatches scare thebleepe out of me, always a last resort... The forces put on the snatches and the recovery points is mind blowing, I know people use them all the time but it's different when you've got your big nose right in the firing line! Strangley enough though none of the other bstards wanted to get in the mud and push me out! LOL

Truckster,

If you're going to cut and paste other peoples work from the Internet, you really should make reference to the site - otherwise, not only is it taken out of context, but it is breach of copyright - might also be a problem for David and Michelle down the track for hosting it.

This one is from http://www.whyalla4wd.org.au/Shackles.php, and your recent UHF post (#16300) copied from http://www.telstat.com.au/cb_info.htm

Ivan, Truckster did have a link to the site just above it in his reply.

Well what do ya know Ivan, if you click on the link above, it opens the Whyalla club page... With the info on it, and a lot of other stuff too..

... some people have firewalls at work that dont allow certain sites to open.. thats why I posted it.

so there ya go.

Fair cop mate - though if it were me, I'd be putting the text and the link in the same post..

The UHF one is copyright though - and no link there...

I'm not trying to be a pr*ck - just speaking for what I believe in - I have a web page and if people were reposting chunks of that without reference I'd be mighty upset

Yeah not sure if it was the same section, but it sounds like it. There track goes around the bit where I got stuck... I did it earlier this year when the water was half way up the doors and almost got stuck, crapped myself. With the water only just above the side steps I though to myself, "oh yeah peice o' cake, I'll show these novices how it's done". Went a lot slower this time so as not to crunch the bottom of the car so much, go about half way through and errr. Bugger. But yeah good fun!