Ha!! Don't get me started. :-) As a Shimano guy, I was hoping that that was an 11sp Campag chain, but I quickly found out that it wasn't, after checking out Rabobank's gear.
I guess the obvious answer to the question of what happened is that the chain wasn't attached properly, or something else went drastically wrong, but still.....
Does anyone know why it busted?
For the newbies reading this, here's a little gem about light, 'fast', cutting edge bling: "there's nothing fast about something that's busted and sitting on the side of the road." Ha! It never gets old. :-)
I couldn't believe how narrow the 11sp chain was when I first saw one, and likewise with 10sp before that. And then there's obviously the thinness of the plates! 'Back in my day', the plates were so thick that the pins were re-useable (as you'd obviously know, but many lurkers wouldn't). In fact, I still only have one 10sp bike, and race mostly on my 9sp DA stuff. I'm in hurry to get more super-narrow chains, and I doubt I'll ever get 11sp.
I was once building a new Campag-equipped bike for a friend, and after I read all the' by-laws' about attaching the chain, I said: "er, um, I think you'd better get the shop to do this bit, coz i don't want it on my conscience if something farks up."