Sorry, me again....
Have just put some winter wheels on Champ (found in the garage - him indoors' old wheelset with very few miles on the clock and a new 11-28 cassette added). I naively headed out for a ride yesterday after just throwing on the wheels, but couldn't change up into the 28 (not too hilly a ride, so didn't really need to). Have just been messing around trying to index the gears, and no amount of messing around with the tensioning nut will make it change up into the 28.
Why, oh why, oh why?
Obviously, it is some sort of subtle message that I should just get some stronger legs - but shouldn't I just be able to swap wheels over just like that (works between Champ's summer wheels, and my race wheels, both of which also run an 11-28) - though I did notice these wheels are rather fatter than any of my others (the brakes are now incredibly shard - must loosen off the cables a bit). Do I just go back to very old grotty winter wheels with amazingly worn braking surface, or am I missing something obvious (should I have added a spacer when I put the cassette on or something like that)?
Promise that one day I will get the hang of this bike business and go away with all my dumb questions.