http://www.lrisolutions.co.uk/index....ge-90-110.html
This back from the seller.
Tested by a Motorsport body. Looked it up. Towed a mandated 2500kg load from a sand trap. Rated to double as safety factor.Quote:
Our supplier has told us that these are tested by and certified compliant by the MSA (Motor Sports Association) up to 5000kg. You would have to contact them for the results of their tests.
NOT ON MY LIFE would be my phrase. Is it on yours?
I see still no good!
Ok so back to finding somewhere to attach my Jate Rings then, thanks. There should be a law against advertising inaccurately...
Written to the seller again, sent more info, asked them to ask the manufacturer if they approve for off road recoveries with winch or snatch.
For a D2 (which it seems you're on your second) Philco points are the best I've seen. If I was to design front points for a non bar mount they'd look exactly the same (but maybe in black). I use a 6000kg round sling as a bridle with the correct included angle to give it a 1.7x addition to strength. Margins and test figures rate it much, much higher at destruction. Plus it's a lifting sling so there's a huge safety factor built in to the rating as well.
There's also a reason out largest bar manufacturer (ARB also stopped fitting any recovery labeled points to their bars. Originally they used eye bolts, 16mm ones which are <1T (Against my 2.5T 20mm ones which are always used in pairs) and then had a small piece of 3mm plate welded under the bar edge.
Jate rings won't attach to a D2. Trialled and errored that one. And again, they come from a Military use as a tie down lashing point. Rated for higher than the vehicle load with a safety margin.
Philco's aren't a good idea, they twist the shackle the wrong way apparently, had this discussion a while back, puts the pin under too much load from memory.
See Jate Rings on a D2 apparently https://www.aulro.com/afvb/images/im...016/07/797.jpg
Yeah, and if you're recovering up hill there goes the bar and the shackle is loaded against the chassis.Quote:
Originally Posted by Islandnomad
The Philco ones may not be perfect Who aid they weren't a good idea?) but without a front bar, mounted correctly with appropriate points or eye bolts integrated there's no way to make a reasonable sized/weighted point in the right location (up high enough and orientated "correctly" and strong enough. I've tried.
Look, we took 25min to knock up a base over engineered replica of the other thing. Run the results past two other engineers who immediately said thats a motorsport part before they even looked at the test and then said no ****ing way would they use it for anything more than towing onto a tilt tray. We've knocked up a bar which on paper will distribute a 20Tonne load across a D2 chassis without plastic deformation of it or the bar, only the eye bolts which despite being RATED at 10x less than load still do not catastrophically fail BECAUSE OF APPROPRIATE SAFETY FACTORS.
We can't stop you killing yourself or others or writing off another car (yours or someone elses). I just hope no one here is with you WHEN it happens.
Well the person that pointed this out, that I had a detailed discussion with, was a very experienced member on here, and I'll quote him "Don't use recovery points that orientate the shackle pins in the horizontal plane as the shackles will become the weakest point if they are not pulled on from directly ahead, shackles aren't designed to be pulled off centre".
He actually convinced me that Philco type recovery points are a flawed design, and he's right!
Quote:
Originally Posted by Islandnomad
Quote:
We can't stop you killing yourself or others or writing off another car (yours or someone elses). I just hope no one here is with you WHEN it happens.
Give it a break mate I'm just talking, calm down...
@clubagreenie ..... wouldn't it be more constructive to show us photos of what you use for recovery points? Seems to me there's a potential market for properly designed recovery points, particularly if they come with comprehensive fitting instructions - could be a good little earner for you :p
Unless you can fit a self aligning recovery point any design will be compromised.
Lifting and Rigging fundamentals, whilst partially applicable to vehicle recovery are not quite the same.
No recovery gear is rated to SWL, rather they are rated to Maximum eg. A 8,000kg snatch strap will likely fail at 8,000kg of load.
While an off angle pull places additional stress on a shackle pin in a recovery, should the pin be exposed to an excessively high load the mount or chassis (all 2-3mm of it) is likely to take some deformation.
The issue here is that no recovery is ever exactly the same.
If the recovery was to pull a vehicle over the top of a sand dune for example the recovery is likely to be in the vertical plane (vehicle nose up/down, recovering vehicle above/below)
If the vehicle is stuck in mud on a bend and the recovering vehicle is offset say 15 degress then the recovery will be in the horizontal plane...
To minimise the issue a suitable length bridle between 2 points will allow the offset to be handled whilst sharing the forces more equally through the recovery points and chassis.
There are ways to design a recovery point that will work through both planes however the cost will climb well above that of the ones mentioned previously.