Is it safe to assume that a late 90s aluminum Schwinn MTB (which were their higher end frames back in the day) would have a 1 1/8" steer tube? When did MTBs stop using 1" steer tubes. I had a Schwinn High Sierra chromoly frame from the late 80s or maybe 1990 with a 1" steerer.
I've always wondered what the timeline was and can never find good search results given the difficulty of searching 1 1/8 versus 1. And "steer tube diameter timeline" isn't turning up much.
Thanks for your help.