FridgeFreezer Posted December 31, 2019 Share Posted December 31, 2019 These things have always made me nervous but seeing this on Sunday was a reminder! Thankfully it happened on-site at no speed and the truck was trailered there & home again. Quote Link to comment Share on other sites More sharing options...
ianmayco68 Posted December 31, 2019 Share Posted December 31, 2019 Nasty , I thought they were supposed to be super strong ? Quote Link to comment Share on other sites More sharing options...
steve b Posted December 31, 2019 Share Posted December 31, 2019 Not in my opinion , there is no way any fabrication could possibly come anywhere near the factory item . These things encapsulate the risk of so-called upgrades with highly safety critical parts . They should be regulated out of production , utter carp . cheers Steve b 2 Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted December 31, 2019 Share Posted December 31, 2019 Cripes ! I've seen it happen on disco rears but never on the front radius arms. I had some of those QT arms on my old 90 but I think I'll stick with what look like the forged originals. Mo Quote Link to comment Share on other sites More sharing options...
Cynic-al Posted December 31, 2019 Share Posted December 31, 2019 (edited) Nothing wrong with land rover metal cracking brake pipes too! Edited December 31, 2019 by Cynic-al Quote Link to comment Share on other sites More sharing options...
smallfry Posted December 31, 2019 Share Posted December 31, 2019 Large offset wheels or spacers ? No way is ANY fabbed arm going to be anywhere near as strong as the forged original. IMO the majority of "upgrades" are like the Kings new clothes ………... 2 Quote Link to comment Share on other sites More sharing options...
neil110 Posted January 2, 2020 Share Posted January 2, 2020 (edited) Adding holes for "lightness" is never a good idea in such a safety critical item. Nice, bendy, half shaft on the discovery Edited January 2, 2020 by neil110 Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 2, 2020 Author Share Posted January 2, 2020 A little "zoom & enhance" CSI-style for those who are curious: Is it me or does the top section (above the hole) look rusty, as if it had propagated up from the hole for some time and then the rest of it snapped under load? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted January 2, 2020 Share Posted January 2, 2020 Yes, agreed. Quote Link to comment Share on other sites More sharing options...
lo-fi Posted January 2, 2020 Share Posted January 2, 2020 Is it supposed to be bent like that (to clear the large tyres, presumably)? I'd hope not, it would be as much of a stupid idea as those speed holes, but you never know... The bend just looks far too deliberate.. Quote Link to comment Share on other sites More sharing options...
miketomcat Posted January 2, 2020 Share Posted January 2, 2020 No it started out straight..... Mike Quote Link to comment Share on other sites More sharing options...
monkie Posted January 2, 2020 Share Posted January 2, 2020 What was the driver doing at the time of the breakage? That metal looks alot thinner to me than the standard one. Quote Link to comment Share on other sites More sharing options...
Ex Member Posted January 2, 2020 Share Posted January 2, 2020 I would guess he dropped off a ledge onto the arm looking at the location and type of failure. Quote Link to comment Share on other sites More sharing options...
smallfry Posted January 2, 2020 Share Posted January 2, 2020 Top bit does look rusty, but a steel fabrication will just bend under compression. Looks like a fatigue fracture to me, maybe finished off by impact. As an aside, look at the way the powder coat has peeled off and rusted underneath it. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted January 2, 2020 Share Posted January 2, 2020 On 12/31/2019 at 3:11 PM, steve b said: Not in my opinion , there is no way any fabrication could possibly come anywhere near the factory item . These things encapsulate the risk of so-called upgrades with highly safety critical parts . They should be regulated out of production , utter carp . cheers Steve b I agree. I looked at these a number of years ago and decided I would put up with having slightly odd steering. Quote Link to comment Share on other sites More sharing options...
Cynic-al Posted January 2, 2020 Share Posted January 2, 2020 I think they have fallen onto a rock or run into something fast as a dead stop. Slid off a ledge with the brakes on etc. I cant imagine the torque or driving / braking has done that. Still good going though. I've never known anything go like that. I wonder if it was damaged before this event and this was the final straw? Perhaps in the past slid sideways onto something which would tear the thin top and bottom edges of the I section which of course is what gives it the up and down strength. I'm not sure it fair to say they're all rubbish, lots use them and find them quite adequate. I think there are a lot that make them with no design or testing, they just copy what they see, or it could be damage the owner hasn't seen which has escalated. I think it was colin Chapman who used to say if it doesn't break it's too strong 🤣 Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted January 3, 2020 Share Posted January 3, 2020 Years ago, QT arms were well known for failing in similar ways, though more under the axle between the fixings. they then changed the design which helped, but they still failed with a good whump into something where a standard arm would be fine. Gwyn Lewis bends the standard arms for castor correction for this reason. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 3, 2020 Author Share Posted January 3, 2020 5 hours ago, Bowie69 said: Years ago, QT arms were well known for failing in similar ways, though more under the axle between the fixings. You mean like this? @Cynic-al - there's zero rocks on the site for him to hit, it's very soft sandy soil. My best guess is powering up a climb or something given where it happened on site. Either that or somehow driving into a tree, root, or hole in the ground coming down - but no damage on the wing so likely not a tree. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted January 3, 2020 Share Posted January 3, 2020 Yup, exactly @FridgeFreezer, that was the picture I remember. QT then stopped drilling under the axle, which would reduce the chance of that failure. I seem to remember the discussion on that came tot he conclusion that that arm had fractured over time, as the broken edges are partially rusty. I bet flex was good with it like that..... 1 Quote Link to comment Share on other sites More sharing options...
landroversforever Posted January 3, 2020 Share Posted January 3, 2020 Regarding Fridge's post, it looks like a fatigue failure to me too. It's the narrowest part of the arm with a hole in. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 3, 2020 Author Share Posted January 3, 2020 From the "M" logo lasered near the axle end it looks like those were Terrafirma arms too, so not even a shonky eBay welded-in-a-shed item - looks like about £250 a pair Quote Link to comment Share on other sites More sharing options...
Ex Member Posted January 3, 2020 Share Posted January 3, 2020 Just shonky made in China with pot metal that may or may not resemble steel. Quote Link to comment Share on other sites More sharing options...
reb78 Posted January 3, 2020 Share Posted January 3, 2020 Interestingly, I was servicing the D2 the other day and the standard hockey sticks on that have 'speed holes' in them.... Quote Link to comment Share on other sites More sharing options...
western Posted January 3, 2020 Share Posted January 3, 2020 Yeah, but they are far stronger than the aftermarket arms shown above. Quote Link to comment Share on other sites More sharing options...
Jon W Posted January 4, 2020 Share Posted January 4, 2020 On the subject of caster correction, I see britpart do caster correction swivel housing. Surely this would be a better way to go that changing to castor correction arms?? Any thoughts Jon Quote Link to comment Share on other sites More sharing options...
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