Saturday, Jan 24, 2009 at 08:15
True, but when a strap is developed, this is the only certain way to test its breaking strain. Sure they will batch test to ensure that they have a strap that consistantly meets the stipulated rating so not every strap is tested but if consistant results are achieved then it can be safely assumed that all straps will meet or exceed their rating.
One thing that the magazine testers did was put a strain gauge on the tow point of the vehicle and did a multitude of tests involving recoveries in different terains including sand, mud, dirt, inclined etc. This gave a very accurate indication of actual force required to shift a vehicle.
They even went as far as to test the effects of a wet / muddy strap, frayed strap, old strap etc to see how age and environmental exposure affected the straps.
Overall I don't think you could have done a more comprehensive test.
One thing that impressed me was that they had run this test a year or 2 ago and nearly 50% of all straps (including ARB and a couple of other well know ones) failed to meet their specified rating. Manafacturers instantly stood up and took notice and now we have very few that didn't meet their specified rating.
This was a great test to 1. inform the public on the do's and don'ts of using a snatch strap and detailed information on their design and intended purpose and 2. ensure the industry keep on their toes by constatly testing and improving their quality control.
Regards
David
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