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Chain can be used, but I prefer to use a strap.Quote:
Originally Posted by Grover-98
The length of each leg of the bridle should be long enough not to create high side loads on the recovery points or chassis rails. The side loads result from the angle the legs of the bridle make.
Depending how the recovery point is bolted to the chassis, prying forces, higher than the load in the bridle, can be created in the bolts. Substantial side loads on recovery points should be avoided.
Quote:
Originally Posted by Grover-98
In theory a rated chain should be fine.... but I tend to figure the less bits of metal hanging on the end of a snatch strap the less chances of a random metal projectile doing something unpleasant. :eek::eek:
I'd use a strap if i was you..
Cheers, Mark
Cheers guys! I guess my best option will be to pick up two tow hooks! ill just use the pin in the tow bar at the rear...as for a bridle im not sure what i should use chain isnt the best option! so maybe a perpose built strap!?
I personally WOULDN'T buy a recovery point from supercrap. have a look at these. Accessories - The Economic Alternative for the Melbourne Landrover & Rover 4wd Community or Recovery Points
You may need to buy high tensile bolts for added length at any bolt shop.
I have the AMV ones but probably should have gone the 4x4 ones as they look thicker. They are roughly $100 a pair. I had the thick recovery points on my D1 (wouldnt fit to my D2:()& they never bent & I think is a much better investment than any other recovery point.
Dave.
don't use a chain!!!!!!!!!!Quote:
Originally Posted by Grover-98
if your snatch strap is rated at 8000 lbs you need a stronger chain.
forget it.
the chain isn't designed to take the sudden load incurred in a snatch situation, and if the chain breaks, it will be a seriously dangerous missile.
Iv seen you guys using two bow Shackles on the bull bar, is that ok to do?
Maybe in an emergency but I think the steel is too thin. I wouldnt trust it. when your life is at risk, its not worth it. A bow shacke that has just snapped off the front of a bull bar will smash straight through the back window of the recovery vehicle. I know if I have my kids in the back seat & somebody wanted me to recover them using the bull bar rings....I dont think so. There maybe others here who have used them plenty of times with success, but I wouldnt risk it. It will obviously depend on the severity of the recovery, but you dont know how bad you will get stuck when in the bush. My 2c worth.
Only if the bar is designed for recover from those point.Quote:
Originally Posted by Grover-98
Poor recovery points can lead to serious damage and injury.
A few years ago someone had his legs smashed by a bull bar that was pulled of a vehicle by a snatch strap.
You are asking a lot of questions where respondents can only give general answers as to what they might do in a similar situation. These general answers can easily be invalid/dangerous if misinterpreted or executed in a manner that was not envisaged.
I know you want to learn but our vehicles tend to have many variations and some may influence what is right or wrong as far as recovery is concerned.
Shock loads, and how the loads are transferred through attachments etc. is not always well understood.
You are a little over 1/2 hour from me - you are welcome to call around if want a chat about this.
I use a tree trunk protector as a bridle/equaliser strap. Thread the loop end of the snatch strap through it and then attach each end of the TTP to your two chassis mounted recovery points.
Now there's going to be comment about using TTPs for this purpose, but they are double thickness so should be Ok.
That way the load "self adjusts" so there is always even load on each recovery point, no matter what angle you are pulling at.
I wouldn't be using bow shackles through those standard "holes" on the bullbar - I've seen pics where the bow shackle has pulled through that bit of metal and gone through the back window of the pulling vehicle.
Grover-98, if you use a bridle, which is a good Idea to spread the load, make sure that it is long enough when connected to form an angle of less than 45 degrees at the point where the snatch strap attaches (Apex).Quote:
Originally Posted by Grover-98
Reason: a bridle strap at 45 degrees will have tension under load in each side of the strap equal to the weight being snatched, i.e. if a force of 2 tons is applied to the bridle at 45 degrees there will be 2 tons of force (tension/load) applied to each side, therefore your bridle strap would have a combined load of 4 tons.
If your strap was shorter and the angle created at the apex (where the snatch strap connects) was 90 degrees the load on each side of the strap would be double the load, i.e. 4 tons/side meaning your bridle strap would have a load of 8 tons.
Solution: keep your bridle strap as long as possible to reduce the angle at the apex.
My suggestion for recovery points is, square off the ends of the chassis with a solid brace between the chassis rails and box it in to add strength, weld some large captive nuts on the bracing (behind), level with each chassis rail, drill 2 holes in the bull bar to line up with these 2 captive nuts, refit the bull bar and screw a large Eye Bolt with flange into these holes, if necessary use washers to get the eye bolts with the eye holes in the Vertical axis when tight, always use rated shackles that have a SWL/WLL equal to or above the breaking strain of your snatch strap, Regards Frank.