Joined: Sep 2016
Posts: 183
Likes: 160
From: Gulf Coast
Bikes: '93 Cannondale R500; '88 Centurion Ironman Expert, '97 Cannondale R900, '95 Serotta CSI, '83 Trek 700, '97 Lemond Zurich, '89 Bianchi Giro, '87 Schwinn Prologue, '83 Fuji TSIV + one perturbed wife
The frame is a Schwinn Prologue so it should be a 28.6 diameter DT. I may try finding some scrap pipe of similar diameter and tighten the clamp around it just for kicks. If it doesn't work, there's not a whole lot lost in the FD. I'll just start over and look for another 1055. Thanks for the feedback!