I'm currently commuting on an old Schwinn Frontier (circa 2001) that I rescued from my son's garage. It came with grip shifters that were banged up and inoperable when I got it. I did a temporary fix by disconnecting the front derailler, and putting a $1.99 thumbshifter on for the rear. I'd like to go ahead and get this drive train fully operational but I'm not sure what is compatiable. It has a triple in the front with a seven-speed rear. The derailler just says Shimano SIS. So any ideas on either a trigger shifters (preferred) or a grip shifters that I can purchase that will work? Thanks!
Univega Gran Turismo, Cannondale Synapse, Bianchi Aquiletta Folder
Virtually any Shimano-branded 7-speed shifters will work. But 7-speed Shimano trigger shifters are getting a little hard to find. If you get the variety that is integrated with the brake lever, then you need to make sure the brake lever is for the correct type of brakes- cantilever or V-brakes - otherwise the braking may suffer.