mr_mcp Posted August 19, 2009 Share Posted August 19, 2009 Hi, I need to get some shackles for my recovery rope, I have a standard 300tdi Defender 90 - what weight tolerance should I go for? I'm guessing 2 tons would be too weak? Thanks! Quote Link to comment Share on other sites More sharing options...
bishbosh Posted August 19, 2009 Share Posted August 19, 2009 A 2 tonne shackle would probably be strong enough due to the significant safety factor built into them (7:1 IIRC), but you really want a bigger one so fitting it onto strops and winch hooks etc is less of a struggle. Mine are 4 3/4T which is a good size to go for. Please do not try and save a few pounds on unrated shackles - they are not worth the risk to you or anyone in the vicinity of the recovery. Quote Link to comment Share on other sites More sharing options...
alantd Posted August 19, 2009 Share Posted August 19, 2009 Agreed. Not worth the risk. 2T is very low if you're pulling out of mud. The safety factor is there for when they've been knocked about a bit (inevitable) and if there's any shock loading. The 2T rating is a static figure. 4T definitely. Quote Link to comment Share on other sites More sharing options...
mr_mcp Posted August 19, 2009 Author Share Posted August 19, 2009 OK I'll go with them, thanks gents Quote Link to comment Share on other sites More sharing options...
western Posted August 19, 2009 Share Posted August 19, 2009 Go for nothing less than 3.25 tonne rated shackles, some have blue.red or green 3/4 inch diameter pins. I get mine for around 4quid each. Quote Link to comment Share on other sites More sharing options...
Part1cle Posted August 19, 2009 Share Posted August 19, 2009 You need to think about the whole scenario - what you are attaching it too at both ends and the rope/pulling medium you are using. Use quality shackels with a big enough radii to not cut the rope - think what you might need then double it. Think about most winches, they are iro 9+ tonnes to pull a 2 tonne Landy. Would you want to have a busted truck, or worse still a busted mate, because you didn't get the right stuff? Try your local lifting specialist, they may be cheaper than you think for standard stuff like shackles. Cheers, H. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted August 20, 2009 Share Posted August 20, 2009 I have a selection of 3.25 and 4.75T shackles in my box, happy with either of them for most recovery jobs but not happy with cheapy unrated ones. The 3.25T ones are physically smaller and this can be useful at times. I think the rating is usually for lifting so at least 5x safety factor and something like a 24mm nylon rope has a breaking strain of about 12 tonnes, but I would suggest that if you are getting anywhere near 12 tonnes on a single shackle or rope then you need to reconsider the technique being applied Quite a few made-up winch ropes that you can buy have 2T rated hooks on them ... even the big swivel hook on my Milemarker winch line is only rated at 3 tonnes for a 4700kg rated line pull. Quote Link to comment Share on other sites More sharing options...
bishbosh Posted August 20, 2009 Share Posted August 20, 2009 Think about most winches, they are iro 9+ tonnes to pull a 2 tonne Landy. Slight correction - most winches are 9,000lbs which is about 4 tonnes. Quote Link to comment Share on other sites More sharing options...
mr_mcp Posted August 20, 2009 Author Share Posted August 20, 2009 Great advice, thanks all. As you say, it's better to be safe than sorry so I opted for a 4.75T shackle which comes with a test cirtificate. CChrs, mr_mcp Quote Link to comment Share on other sites More sharing options...
western Posted August 20, 2009 Share Posted August 20, 2009 Rated shackles are stamped with thier safe working load for LIFTING, so as BM says above they are more then adequete for pulling/recovery use. Quote Link to comment Share on other sites More sharing options...
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