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I hope the swingarm is returned to the factory for met. analysis. It could easy be a one off casting that had a hair line crack that eventually gave way. Whatever the cause it would be reassuring to know a complete investigation took place. Either way it must be a very rare occurance which would not put me off a CARC model.Edit: I note the bike is on a auction site. From what I have said above that is not acceptable unless the true cause is known already.
Shit does happen in any brand. Being such a rare occurrence does make you wonder but a bloke I know was riding his Suzuki SV650S which he'd owned from new, never dropped, 20,000K's , well ridden but looked after, never been on dirt, when the fork headstock cracked off the frame and threw him down the road. He got nasty gravel rash but luckily it happened at slow speed.The cops wanted to charge him with neg driving because it had to be trailered. Crazy blanket rules. But suffice to say, there are thousands of these bikes that never have any such problem, in fact it would be amazing to find one other case. You just have to be unlucky I spose.Fractures like that carc could possibly occur from an initial scratch in the wrong spot. Being a big hollow tube with a hole drilled at that point, there might be something there, some kind of a deep scratch or score, that started the thing over a long time.If anyone is worried they should have close inspection of their carc in this regard. But I'll be surprised if anyone else has the same problem. I do believe the story though and it seems wrong to make out that the owner is a bullshitter. Especially with no other evidence than the story which sounds totally plausible. All castings are not equal, we should accept this.
The jokes on Guzzi of course; I hear it now... Guzzi put the "R" in CARC in the wrong place. :beat_horse
FWIW, the swingarm (part # 978350) is the same on the 8V Norge, Griso, and Stelvio. It is also found on the 4V Stelvio. That tells me that this failure is extremely rare since the part has been used for at least 7 years and in multiple vehicle types. One bad casting...stuff happens.Peter Y.
What I think is absurd is that after one failure on a single machine all the shrieking hysterics come boiling out of the woodwork claiming that the design, used on many different models, is flawed and unsafe.
No 'Hate' on the owner from me. If the story is true I can perfectly understand his concerns and his choice to move to another brand. What I think is absurd is that after one failure on a single machine all the shrieking hysterics come boiling out of the woodwork claiming that the design, used on many different models, is flawed and unsafe.Pete
No 'Hate' on the owner from me. If the story is true I can perfectly understand his concerns and his choice to move to another brand. What I think is absurd is that after one failure on a single machine all the shrieking hysterics come boiling out of the woodwork claiming that the design, used on many different models, is flawed and unsafe.It also doesn't explain why the wreck is listed as impact damaged. Who knows the real story? Nobody!Pete
I do believe the story though and it seems wrong to make out that the owner is a bullshitter.
This old swing arm (Paralever) has been rolling down the highway for over 140,000 miles. I suspect it might be a bit more delicate than the CARC design, however, no issues, aside from a driveshaft (u joint) that failed at 121,000 miles. There's several thousand Beemer single sided swingarms out there, and aside from the pic of the 'flaming' one, I haven't seen too many pics of failed units, at least not any that look like the CARC pic in this thread. I have to agree .... the Stelvio must have hit something in its lifetime that fractured the swing arm.
I don't see anyone calling out the owner or poster. I think we're all in the same boat and just wondering how this happened. The most logical explanation is at some point, there was an "event" that caused a crack, and over time that crack grew until the final result as seen in the pictures. The million dollar question is, what was this "event"? I think we'd all agree that the most likely scenario is an impact of some sort, possibly days, weeks, or months prior and the owner never knew a crack had formed. A much less likely scenario, but I guess still possible, is this idea of a bad CARC from the factory (i.e. a casting defect). Hopefully someone will post up better pictures of the whole CARC, including the underside. If there are no signs of impact along the fracture, then I guess we have a unicorn and the first ever CARC failure from bad casting (at least the first I've ever heard of), but my guess is an impact started this disaster.In the end, CARC'd Guzzi's are more overbuilt than my car, so I'll keep riding the heck out of mine and not worry a moment about a similar failure.-NV
I haven't zoomed in on the picture, but it looks to me like the crack was there for a while. Dark colour in front of the tire , and shiny ( fresh ) aluminium colour where it finally let go. Giving it a bath once in a while , that crack may have been discovered before it failed completely, Ohhhh thats right , some of you guys are allergic to a clean bike :D-Ron.
Have another look at picture, it's swingingarm not carc that broke, Agree with Pete it was a bargain, I should've jumped on it, I'd use front end and brakes , engine, box and carc could've found homes for sure.
It's interesting how the cross-beam of the swingarm tore open along that dirty looking break... with that kind of pre-existing damage I would expect it to fail as bad as it did.
Look, it's very unfortunate but quite simply the design has been in production and use for well over a decade. There has been no pattern of systematic failure. Ofeople want to scaremonger they are welcome to but it's bullshit plain and simple. Two failures in a decade does not a 'Flawed Product' make. If it did BMW's system would be streets ahead in the failure rate.Petewell nothing is perfect and just like the suspension link there is always a few that dont make the grade! Too bad I cant post all the findings I think it would change your mind about the quality!