I have an old steel frame (ok, it's not that old). It is a 1992 Avanti Ultra, 6 speed downtube shifters, double chainring (got an icky biopace ring thing).
I absolutely love the bike, but the rear wheel is in such a bad state that it is dangerous to ride, so it's sat in the garage for over a year now. If I was to get a wheel for it, how many gears can the bike take? I understand that the older frames with less gears had a narrower gap between the drop-outs.
As for shifting, will it make a difference? I will use the friction rather than the index shifting. It has Shimano 105 groupset with downtube shifters, but not sure of the age of the grouppo.
Any help would be great.