The Vincent chewed a front exhaust pushrod a couple of years ago and my beloved came and picked me up in our van, but you wouldn't have fixed that leaving all the alloy in the timing chest. The Norvin killed a battery a few years ago but you have to take the back wheel out to get to that and it only has a side stand, anyway I wasn't riding it at the time, a mate was so he just jumped on the back of me and we fetched the van, the 1150 burnt a plug out 10 years ago which is why I needed to sort the carb. Other than that, I seem to remember a clutch cable breaking on one of my Triumphs about '98 and it threw a rod in 1996, Ok I'm just lucky I guess although I do remember a period in the 70s when I seemed to get a puncture almost every week !!