Sorry that I haven't answered all the questions. Here's a couple more answers:
I did not buy the chains at the same time.
I don't think the chain has a directional requirement.
Originally Posted by
FBinNY
Since you've virtually eliminated installation as a factor (you use a connector which hasn't failed), you're left with few possibilities. Unless you bought all the chains together on within a narrow time interval, defective chains are likewise unlikely (what are the odds of buying 3 defective chains).
It's possible that you're cutting the chains too short (LT big/big+ 1"), but that's easy enough to rule in or out.
So, we're down to something about the sprockets, and you.
Question, this bike is Hyperglide, what were your prior bikes? If not Hyperglide, then I see that as the difference. Hyperglide makes overly aggressive possible, and can break chains in a way that non hyperglide bikes can't.
BTW- you never said whether the breaks were off the pin type or fractured plates.
I actually did say that the outer plates failed the last 2 times but I couldn't remember what happened the first time. Now, however, I am not sure the plates failed this last time. It looks like the pins on the quick link broke loose. This all happened in the dark at -2F on my way to work and when I got the bike back home I assumed that part of the chain was left laying in the road. Now I am not so sure there is anything missing other than the other part of the quick link.
I never heard of Hyperglide before. The bike I referred to with over 11,000 miles is a Surly LHT. I can't say whether it has Hyperglide or not, but unless it comes stock, then it does not.
I hope I have not left any questions unanswered. I thank you for your patience and your insights.