This bicycle has been updated - click here for the latest version

Here is my slightly idiosyncratic sport tourer built by Chris Bull at Circle A Cycles.

The gearing on this is meant to get me over the steepest of climbs. My ratios go from 103" down to 21" using 42/26 chainrings and an 11-34 cassette. There is what looks like an alarming gap between the 105 front derailleur and the 42t ring (necessitated by chainstay clearance), but the shifting is smooth and positive with the friction barcons. The front derailler is adjusted so that there is no chance of overshift in either direction. The neutral chain line on the 42t ring is on the 17t sprocket giving a comfortable cruising gear ratio of 67".

Here's a parts list:
Circle A Cycles 55cm (c to t) Columbus Zona frame.
Phil Wood bottom bracket
Sugino 110/74 triple crank
TA chain rings, 42t mounted on middle position of crank and 26t on the inner position
Shimano PD-M324 pedals
Shimano 105 double front derailleur
Shimano XT cassette, 11-34
Shimano XT rear derailleur
Shimano barcon shifters
SRAM chain, PC-99
Velocity Dyad rims, 32 spokes front, 36 spokes rear
White Industries hubs
M15 Shimano RX100 57mm reach caliper brakes
Shimano brake levers
Continental Top Tour 700Cx28 tyres
Brooks B17 saddle
Nitto technomatic stem
Chris King headset
Nitto Noodle bars

-- Clive Standley


Circle A Sport Tourer - side view


Circle A Sport Tourer - crank & bb detail


Circle A Sport Tourer - Rear Derailleur
Circle A Sport Tourer - rear brake detail
Circle A Sport Tourer - front derailleru


This bicycle has been updated - click here for the latest version

Current Classics Photo Gallery - Cross Bike Photo Gallery
Single Speed Garage Photo Gallery
- Working Bikes & Practical Hardware

   Submit a Current Classic Bicycle Photo