Originally Posted by
operator
There is NO "standard" for road bike drop bar size. Especially with an older bike like that it could very well be 25.8, 26.4, 26 etc etc.
I meant standard OS. I gave up typing "OS" because when I replied BF would not let me capitalize those two letters for some weird reason and "os" looks stupid. Most of those I see around here are 31.8 chopped risers on a road stem.