S Satan New member Jul 23, 2009 #1 i was watching stage 18 of the tour de france, the individual time trials, and i saw the irregular egg shaped chain disk of bradley wiggins. what advantage or disadvantage does this give a rider compared to one that has a circular chain disk?
i was watching stage 18 of the tour de france, the individual time trials, and i saw the irregular egg shaped chain disk of bradley wiggins. what advantage or disadvantage does this give a rider compared to one that has a circular chain disk?
