Hi, I've posted a lot about issues getting my Surly to have index shifting.
Surly LHT - Shimano 44/32/22 SLX crankset, 7 speed cassette, 7 speed chain, 2 sets of shimano 7 speed downtube shifters.
I've worked on bikes for years -- read all Sheldon's stuff, etc.
Basically, I've always been able to set it up to where it seems fine in the stand, and maybe for a day or two commuting....but then I'll stop at a traffic light, and when I start up again the chain will "pop" or "clunk" right when I start pedaling again.
Then it goes for maybe another 2 days with completely normal shifting, then does it again....really annoying.
I tried aligning the derailleur hanger -- which seems to have reduced but not eliminated it.
I've tried turning the RD barrel adjuster a bit tighter or looser to fix -- same result.
What the crap is going on with this? Are downtube shifters just not as precise on each individual shift as STI? My old 9-speed STI stuff never did this.
I mostly ride on the 44t chainring. Chain is relatively new (not stretched out). Cogs are relatively new also (not wore out).