I've noticed 'chain stretch' on all the chains I've used. Granted these have all been at the cheaper end of the scale: izumi, sram and KMC. Not so long ago I had to find a magic gear for my first vertical dropped frame and used a fresh(and cheap)! KMC. STretched half an inch in about a week. I then switched to a chain about two years old (sram + pre-stressed) that has the same number of links but is about a sixth inch shorter and has done me well since.
Chains stretch!
I've had similar mysrterious break-in periods with some chains. I just don't talk about it. it's a dead horse though right?
I've had similar mysrterious break-in periods with some chains. I just don't talk about it. it's a dead horse though right?