Well here's my "new" commuter. 87 Specialized Rockhopper, added crossroads tires, slime tubes, new cables, rear rack and grocery bag, front bag, mirror, computer, pump, lock. Got the bike for $30 off Craigslist and had most of the rest of the stuff. Without my stuff (clothes, laptop, lunch, tools, rain gear, water bottles) its about 35 lbs. My commute is 16 miles of mixed paved path and dirt/gravel trails. Rode it about 12 miles yesterday and it works fine, hopefully get a chance to ride it into work on Wednesday and Thursday.