This happened the other day...just riding along, minding my own business and off popped the chain. I can't see how but the magic link appeared to have come undone on its own.
Chain is a KMC X10 SL. I *had* recently refitted it but rode 40 miles before it made a bid for freedom. Can't see how it could come undone on its own but pretty sure I fitted it correctly. Is there a reason they say they're not reusable? Might make me rethink my magic link purchasing strategy (ie: buying some and not just reusing the old ones) Anyone else had one come undone?