Originally Posted by
twowheelies
its s new chain, but since it didn't with a connector pin (the kind you break part off of once installed) or quick link, i did pull a pin halfway out, then push it back in. could that hav been the cause...!?
It was on my last broken chain.
I was going on vacation and needed to swap in a "mountain" cassette. Without thinking, I spliced in a few links to lengthen the chain.
It worked fine for me, but when I loaned the bike to a friend (a much stronger rider) while I worked on his, he parted the chain and turned the RDER into a pretzel.