Originally Posted by
fuzz2050
... I think all the 72* had cantilever brakes.
Originally Posted by
USAZorro
... the 72* would have cantilever brakes. This one doesn't look to have those.
The BB looks quite a bit like the investment cast one that is on top of the line models (at least in 1984) on the 760, 770 and 170. (My '84 has that). Of course if it's a different year, it could be a different model - but not a 72*.
Gentlemen, as much as I hate to contradict the experts, I have a 720, which is a 1982 frame purchased new as a frame in 1983, that does not have cantilever studs (and never did, by the way. I always wanted them, but they were not available at the time!).
Originally Posted by
fuzz2050
I know the 'Trek' stamped bottom bracket is post 82, so that narrows it down somewhat. If i had to guess, either a 4** or a 6**
But I will go along with that. Mine has "Cinelli" cast into the bottom of the bottom bracket. Oh, and to thoroughly confound you, mine is Italian threaded!
Just in case you're wondering how I know mine is a 720... a few months ago I had the fork off so I could rattlecan the frame, and I found some markings on the steerer. Stamped into the steel were the letters "REYNOLDS 531 DB" and, very near there, the number "720" which looked like it was done with a dremel tool.
OP: it could be that if you take the headset apart and look at the steerer tube you will find the information you're looking for.
--Rudi