I just converted my Canyon Nerve AM to 2×10 (using existing Deore 32/24 rings, I will likely up the 32 to a 34 at some point) and installed the Canyon chain guide (like a Stinger, basically).
I have shortened the chain using big rings (over chain guide) plus 2 links measurement. I have locked out the shift to the large ring and (or so I though) had tweaked the H screw to the point where it would only just shift up (ie any lower and it can’t get off the granny) in the low gears.
However, on my last ride, I managed to shift the chain right off onto the cranks (forwards, not backpedalling). I believe this was in a shift off the granny while towards the small end of the cassette (since I just replicated it in my driveway in those gears…).
So what’s the solution here – do I need a bashring or do I just need to be much more conscious of getting out of the granny as soon as I’m in the middle of the cassette? Or am I wrong that I’ve got the front mech set right?
Obviously going 1×10 would be best solution but I just don’t think I’m strong enough yet. On a good day I can get around places I regularly ride with no granny, but if I’m feeling a bit tired (and I am over 40, and just a little bit overweight, with 2 kids, so this is not infrequent) I find I need the bail-out at times.
Advice appreciated, criticism and general slagging also accepted.