Wheels of fortune
Jan 27, 2021
3 minutes
Words SAM CHALLIS
Photography
ROB MILTON
The oversize pulley wheel (OSPW) system was pioneered by engineer Wolfgang Berner, and it set internet forums ablaze when it was first spotted on the Sram Red rear derailleurs of Fabian Cancellara, the Schleck brothers and Lance Armstrong during the 2010 season.
‘What is this rear derailleur thingy?’ was the topic headline of countless threads, accompanied by a grainy screenshot of Spartacus at his imperious best in one of the two time-trials
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