Originally Posted by
dabac
The more speeds we've gotten, the thinner the sideplates have become. The thinner the sideplates are, the harder they have to be to last long enough. The harder they are, the more brittle they become. The more brittle they become the more likely they are to crack during assembly.
If it's only a partial crack, it can take some time before the piece flake off.
What seal are you talking about?
i don't know if the metal shard came from the chain.
the seal i'm talking about is the crimped part of the chain push pin that keeps the pin locked in the chain. my understanding is that without that seal, the chain risks breakage