Originally Posted by
spclark
These replies are telling me it's the cold weather aspect of my recent rides that suggest a different approach to maintenance is indicated for cool / cold weather. No surprise, I rarely ever venture out when it's below 50°F.
This too an 'index vs. friction' thing... the former sensitive to environmental conditions, the latter somewhat more forgiving once set up properly, cable tension vs. spring tension.
I'll be sticking with my trainer for awhile yet... it's 10°F outside right now, streets covered with ice where plows left snow from Friday's blast to thaw / freeze in yesterday's sunshine.
Thanks all for your insights.
An hour's drive to the Specialized shop might not be worth it to you. And that's assuming that Specialized dealers are obligated to provide the free warranty tuneup despite their having made no money on the bike sale. Which, if true, would annoy me if I still worked in a shop that sold Specialized bikes. Maybe dealers can submit a claim to Specialized for the labor charge. I hope so.
In any event, rather than speculating on the cause and letting the bike continue to shift badly, maybe look at some videos detailing how to adjust the cable tension for optimal indexed shifting. It's one of the easiest bike adjustments to do.
Also check the torque specs on the various bolts and nuts on the bike and check them with a torque wrench. It's been decades since I worked in shops, so I hope Maddog or one of the other people here who currently work in shops can provide advice on what warranty checks entail for modern bikes.