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jate rings
Posted: Sat Jun 11, 2005 6:15 pm
by uninformed
hey all, just making up some "jate rings" for front recovery points. untill i get a bullbar. (only stock LR bumper). so i cut them out and are all ready to weld up...... when i dry fitted them to the chassis i can imagine that they will want to swing foward when being recovered and if using a chain briddle, the chain will want to pull up into the bottom of the chassis rail, as i can't imagine too many times when the recovery line will pull lower than chassis height. so how tight do you do the bolt fixing them. i have seen them mounted so they are leaning back towards the front axle so as not to get caught on shit. so are the able to rotate forward under load or are they done up real tight? any help will be great. going on my d110 tray back
cheers, serg
Posted: Sat Jun 11, 2005 7:33 pm
by landy_man
they are meant to be able to swing freely....
just make sure your welds are 100% and that the high tensile bolts are up to the job..
Posted: Sat Jun 11, 2005 9:27 pm
by 81rangie
Can you buy these here in Aus?
Nick
Posted: Sat Jun 11, 2005 10:18 pm
by landy_man
yes...
I believe Troutbeck Sales in Melbourne sell them
Posted: Sat Jun 11, 2005 11:51 pm
by red90
All the factory fitted (military) ones I have seen are tight. The recovery force will move them, of course. It is not the best recovery method as they are marginal for strength. If you plan a real recovery, you need to be bridled to two of them.
Also, make sure your home made ones are as strong or stronger than the bolt to the chassis.
I have them as my 90 is ex-military, but never use them. In the military they are used for securing the vehicle for air drops. Recovery is from other points.
Posted: Sun Jun 12, 2005 1:37 am
by 1tonsoup
I do not think they need to be too tight, if you use locknuts there is no need. As I understand it from an old magazine article (from the days when the LR mags actually had tech articles) the JATE rings are sufficiently rated for kinetic energy rope recovery, when used together. IIRC from the article they are rated using a safety factor of five (?) and even then have a rating of something like 5 tonnes of force for each ring. All this is from memory so could be rubbish. (Yep I know 25 tonnes sounds like a lot
)
They are a lot more suited to recovery than the old 2-bolt lifting eyes fitted to military Series landies.
Posted: Sun Jun 12, 2005 1:44 am
by uninformed
basicly using 8mm plate with a 32mm dia hole cut in it and some 32mm dia-8mm wall tube so the tube is pulling inside the legs(8mm plate) this way the welds only hold it together and are not being relied on for the pull. grade 8 12mm bolt and will only use both for recovery never one.
cheers, serg
Posted: Sun Jun 12, 2005 8:54 am
by landy_man
the round tube on jate rings is solid rod
Posted: Sun Jun 12, 2005 10:56 am
by uninformed
yes, but i had this lying round so its free. i feel it will do the job as they are only 85mm between legs and the 32mm tube is 8mm wall.
serg
Posted: Sun Jun 12, 2005 12:52 pm
by landy_man
uninformed wrote:yes, but i had this lying round so its free. i feel it will do the job as they are only 85mm between legs and the 32mm tube is 8mm wall.
serg
by all means use it... but I would not....you have to be 100% it is not going to fail and kill someone... a persons life is worth more than 2 pieces of 85mm solid rod
Posted: Sun Jun 12, 2005 8:40 pm
by uninformed
yes very good point. just having a go and trying to use what i have. i think the tube may be a better grade than mild steel. i will have to find out before i use them. like i said these are only a stop gap for the moment and i don't think (hope) i'll need to use them in an extreme situation. you can get stuck and you can get STUCK. if i get the opportunity i will destroy them under controlled environment to see how they faired
cheers, serg