Originally Posted by
canklecat
Nice. Just go through the bike to check cable tension and the barrel adjusters to ensure reliable index shifting. I'm curious whether the SIS stem levers included indexed shifting for the front derailleur. Some Shimano SIS thumb shifters for triple chainrings were indexed.
My 1992 Univega Via Carisma had SIS thumb shifters. Worked really well for awhile, but by 2017 it was worn out and too difficult to repair. There was some complex gearing and the axle pins and support holes wore out. Eventually I switched to bar end shifters.
Front indexing is a generally new thing- if your chainrings aren't ramped and pinned, you generally don't have indexed front shifting. This bike looks to be around 86/87- long before ramped and pinned chainrings became common.
Did your Univega have thumb shifters or trigger shifters? Thumb shifters will last as long as DT shifters- trigger shifters will foul up- especially the earlier ones. I don't know of too many brands that were speccing thumb shifters by 1992- was there even an upper level Shimano group that had thumb shifters by 1992?