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Schwinn Flat Bar Commuter

1988 Schwinn Circuit. Flatbar Rebuild. It came with the original Shimano Sante groupset except the brake levers. I removed all but the downtube shifters and replaced it with Tiagra 4700 I had laying around. Spaced and aligned rear dropouts to accommodate a 130mm hub spacing.

Frame:
1988 Schwinn Circuit Columbus Tretubi Steel

Fork/Headset:
Schwinn Cromo fork with Shimano Sante Headset

Crankset/Bottom Bracket:
Oval 500. 172.5mm cranks. Praxis M30 BB

Pedals:
Shimano M520

Drivetrain/Cog/Chainring/Chain:
Shimano Tiagra 4700 / Simano 11-28 / Praxis Levatime 52/36

Derailleurs/Shifters:
Shimano Tiagra RD-4700 SS, Shimano Tiagra FD-4700 / Shimano Sante Downtube shifters. (right shifter switched to friction)

Handlebars/Stem:
600mm Aluminum flatbar / Kalloy Uno 100mm Quill stem

Saddle/Seatpost:
Bontrager Montrose Elite / Ritchey Comp 27.2mm alloy

Brakes:
Tektro road calipers

Front Wheel/Hub/Tire:
Shimano RS100 / Conti GP 4000 SII 25c

Rear Wheel/Hub/Tire:
Shimano RS100 / Conti GP 4000 SII 25c

Accessories:
Origin8 Brake levers.

Added by J_Francis. Last updated almost 2 years ago.

As of almost 2 years ago, J_Francis has indicated that they no longer own this bike.

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