Yesterday at Tenerife a friends bike broke the rear axle at highway, The good thing is he wasn’t going fast when it snapp.... I think it’s scary..
Appears to have failed at the bearing face within the hub. Is there a badly designed change of section there that has caused a stress concentration leading to early cyclic fatigue failure?
Hope the rider is ok. Shame there are no shots of the actual break, you can see the caliper kept it in check for a while, looks like it's taken the valve holder with it.
Dunno if it’s an S or base TBH. Same wheels as my old v4s but I can’t remember if the base shares them. He’s been giving it some though looking at the rear tyre (which has also had its valve knocked out, presumably on impact). Hope it was not at any kind of speed, suspect more likely to fail like this under fast acceleration rather than steady motorway cruise.
Oh, and if I were running Ducati I would want to take a very close look at this, just to be sure. Having said that, never heard of this before on any Pani but must have happened for a reason.
... I got sent the video of the guy running up to it this morning filming it, it's all over the net tbf. Also its a V4. But yeah, dodgy as fuck.
I remember there was a recall on early 748/916 where certain chassis number bikes had to have an ultrasonic inspection of the rear axle shaft. My 748 was fine but my mate’s SP got a new axle as it had flaws.
This is 819Z0021A as listed for V4S on the Omaha site. I can't do the arrow point thing but it must have failed somewhere between the splined section and the back face of the wheel mounting.
That does look like it failed right at the bearing face on the shaft. I imagine Ducati will want a look at that
