Ok, there really was something interesting in the now-closed Banjomole thread. That is, will vintage Treks work for 650b? If not, why not? If so, what are the compromises?
I have a 610 and a desire to try 650. What brakes are necessary with the stock forks? Do you need the older forks with 55 mm offset, or will the higher-trail 52 mm or even 45 mm forks work?
What about cornering clearance? 650bs are are about 5 mm closer to the ground than 700cs. Vintage Treks have 7.2 cm BB drop virtually across the board. Does a user of 172.5 cranks have to go to 165s?
Clearance for 58 mm fenders?
inquiring minds want to know more, but a 650b Trek does not look like a slam-dunk to me. Nonetheless it's what I have as an experimental platform.