Recommended upgrades for older steel Trek MTB?
I'm thinking of using an old 1993 Trek Antelope 820 Sport Trail to be a "credit card" tourer. That is, lightly loaded, small rear pannier only, used for up to a week at a time. The one I have is in good shape. All parts other than tires and bar grips are stock.
1) Recommended 26" touring tire?
2) It's got flat handlebars -- would one of those trekking bars fit? I am not sure if handlebar diameters from the early 90s are the same as today.
3) The front derailleur, a Shimano Altus C10, is pretty crappy. The rear one is not too bad. Any recommended upgrades for that, or just leave it alone?
Other than obvious things (adding a rack, making sure everything is checked, tightened, and lubed), are there any other recommended upgrades/changes?