Saturday, Oct 03, 2009 at 07:35
Tony
No difference from this NP to your NS.
Why do you need aftermarket recovery points?
I have never heard of a factory one to fail.
The Video
Sand Snatch Recovery Pajero /Test Results
Following claims being circulated through clubs, retail points and on the Internet, that single point snatch strap recovery would result in damage to Pajeros (specifically, warping of monocoque frame, popped windscreen and guard damage), MMAL Engineering recently conducted a series of tests to prove categorically. That such was not the case.
LOCATION: Sandhills on private property at
Peake, South Australia (40km out of
Tailem Bend).
PROCEDURE: Intentionally bog new NP 3.8 Pajero (identical construction to NM monocoque Pajero), then use another Pajero to repeatedly snatch recover the vehicle, using the same single recovery point each time. (front RHD on the bogged vehicle and on the towbar of the recovery vehicle) In addition, to establish just how much load is involved in such recovery operations, a load sensor was first attached to the recovery vehicle, and the snatch strap then attached to it and then attached to the bogged vehicle. (It should be remembered that the loads involved will apply equally to the recovery and recovered vehicles i.e. not halved.)
Snatch strap rating was 8 tonnes. Properly rated D-shackles were used to locate the strap and load sensor. Strap slack on each occasion was approximately two metres, and the recovery vehicle was driven away in second gear low range.
Immediately before and after each recovery operation, engineering staff using depth gauges measured panel gaps. A total of ten different points were measured, including bonnet, front and rear doors and tailgate.
RESULTS: A total of six recoveries was accomplished, ranging from the most common bogging occurrence on flat ground to recovery over a very steep sandhill. (It should be noted that to bog the vehicle on flat ground, the ABS relay had to be removed to disable the traction control.)
The flat ground recovery measured a force of 21 kN (kilonewtons). (Ten kN is approximately equal to one tonne.)
Four successive recoveries were achieved on a slight sand
hill with quite severe sideslope. Maximum load here was 27 kN.
On the most extreme recovery, the load was 31 kN. According to information from tests conducted in Japan prior to monocoque Pajero being released, this is more than enough to distort some conventional 4WD chassis.
At the end of testing, no difference was noted between gap measurement prior to testing and after. All doors opened and closed as expected.
MMAL would like to stress that there is no danger in recovering a stranded Pajero using single point recovery, providing recognized snatch recovery techniques are used.
Dave Howard
Technical Officer
Pajero 4WD Club of Vic
AnswerID:
385538
Follow Up By: Member - Tony V (NSW) - Saturday, Oct 03, 2009 at 14:57
Saturday, Oct 03, 2009 at 14:57
Dave,
Thank you for the informative video and reply, it is good to get the facts.
Irrespective of what type of vehicle I would still suggest a bridle is used if possible (even on my 100). There again I would also only recommend that you use 500 mm of slack in a recovery.
FollowupID:
653192
Follow Up By: Member - Tony Z (NSW) - Saturday, Oct 03, 2009 at 20:03
Saturday, Oct 03, 2009 at 20:03
Thanks pickle You hear all sorts of things about recovery - factory points not up to the job and will pull off. Your reply will help if ever I need to be pulled out of a bog/sand but so far my NS has proved to go where I have wanted to go, BUT I will be able to push some limits now and know that if required I can be retrieved.
Thanks again
FollowupID:
653228