i searched. i couldn't find an answer. so im just gonna ask:
i have a miyata 912 im converting. i need a headset and a fork. am i looking for 1" or 1 1/8" if i am going threadless? its an old (80's) frame. i don't know much about steertube sizes or anything. can i even use a 1 1/8" fork and headset on an older frame? any help would be rad.