9speed, about 400 – 450 miles so far on a bike set up and built by *shock horror* …. halfords. i ride on nothing smooth, i stomp my feet down whilst in the middle ring to climb hills, im not a small lightweight person, i change gear at the wrong times (usually whilst stomping up a hill) and i’ve never used a proper lube (yet) just gt85.
no problems so far 🙂
if it does snap then i’m buying a heavy duty chain and a small pack of this sram chain link thingies and i will wrap my broken chain around my neck and wear it like a medal celebrating my obvious awesomeness for riding hard enough to break stuff