I broke a chain this past weekend. I'm afraid I don't remember how new it was. I haven't had a chance to put a lot of miles on the car yet, so I wasn't thinking it was ready to be changed (but could be wrong)
The night before the test day I tightened the chain. I suppose I could have tightened it too much, but it didn't seem like it.
I figured I'd post pics here in case someone might have a keen eye and can make an educated guess about why it failed.
A little more info: It's a stock Hyabausa. I was coming out of a 2nd gear corner. I'm pretty sure the two sprockets are aligned well. My chain is shorter than most and the rear sprocket is small, too - 22T (because my Quaife has a reduction gear inside). It was not the master link that failed.
I do have some good, new chain to install, which I'm hoping/expecting will last a while. Maybe I should plan on replacing it pretty regularly.
Thanks for any thoughts.