Mark Posted February 16, 2006 Share Posted February 16, 2006 Chaps, Quick question about strps and strop ratings... If something is being marked as being x tonnes SWL this is a rating for lifting, yes? Firstly, what is the safety factor of lifting equipment? 5 ? if so, thensomething marked as 2t swl should be safe for 10t pulling (rather than lifting). Am I correct in this assumption? If so what rating should I get on a strap that I intend to use for recovery purpuses on a Disco? I am thinkin in terms of 5t or 8t? Ta Mark Quote Link to comment Share on other sites More sharing options...
Tonk Posted February 16, 2006 Share Posted February 16, 2006 i think the safety factor is 7, ie 1 ton lift is 7 ton pull Quote Link to comment Share on other sites More sharing options...
MogLite Posted February 16, 2006 Share Posted February 16, 2006 I thought it was x7 for pulling as opposed to lifting. Aren't good strops colour-keyed ? Purple = 1 tonne Green = 2 tonne Yellow = 3 tonne I've used green and yellow with no problems Quote Link to comment Share on other sites More sharing options...
Tonk Posted February 16, 2006 Share Posted February 16, 2006 hmmmmm colour coded strops, now who would've thought........ Quote Link to comment Share on other sites More sharing options...
bishbosh Posted February 16, 2006 Share Posted February 16, 2006 See THIS THREAD from earlier....... and try THIS LINK Quote Link to comment Share on other sites More sharing options...
Mark Posted February 16, 2006 Author Share Posted February 16, 2006 Thanks Bish, well remembered! Mark Quote Link to comment Share on other sites More sharing options...
bishbosh Posted February 16, 2006 Share Posted February 16, 2006 No worries, I only remebered it because I had something to contribute for a change! Quote Link to comment Share on other sites More sharing options...
Mark90 Posted February 16, 2006 Share Posted February 16, 2006 Strop Ratings If she throws yer dinner in the dog/bin, won't speak to you and has a 'head ache' that no known pain killer can cure all because you came home late with another rusty landrover then I'd rate that strop as a 7/10 Quote Link to comment Share on other sites More sharing options...
Mark Posted February 16, 2006 Author Share Posted February 16, 2006 If she throws yer dinner in the dog/bin, won't speak to you and has a 'head ache' that no known pain killer can cure all because you came home late with another rusty landrover then I'd rate that strop as a 7/10 Ah, that explains a lot.... Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted February 16, 2006 Share Posted February 16, 2006 ISTR there's a great deal of variance in straps/strops depending on what they're used for and the level of certification. Safety factor could be anywhere from 1:1 to 10:1 or higher. No doubt someone will correct me on this, but I also seem to recall straps designed for lashing heavy loads are rated by the load they will restrain, not their lifting breaking strain - so a strap that will hold a 10t load from falling off the side of a truck may break at 5t lift or less. On the flipside, at work we have slings etc. rated for suspending people from poles, they are rated to 250kg but they're more heavy duty than many of the multiple-ton rated strops I've seen used for off-roading. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted February 16, 2006 Share Posted February 16, 2006 Hmm I had it in my mind that it was 2x for pulling, 5x for lifting and minimum 10x when personnel transport is involved i.e. lifting people. Which means if I wanted to hang myself I'd need a decent rope for safety's sake One criticism I saw somewhere about wire winch cables is that 8mm wire rope which is commonly used is only rated to about the breaking strain of many 9000lb winches, giving almost no safety factor at all. Quote Link to comment Share on other sites More sharing options...
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