This article first apeared on BikeRadar
The 2017 Tour de France isn't Alberto Contador's first rodeo. And while he is happy to race the latest and greatest of many things – such as the new 640g Trek Emonda frame – he also has a few older products that he will continue using, thank you very much.
Old 9000 calipers for adjustment
Contador and the rest of his Trek-Segafredo Tour de France team has Shimano's brand-new Dura-Ace 9170 Di2 group. But Contador requested 9000 series brake calipers because he can adjust them on the fly.
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The 9100 have a quick-release lever that looks similar to that of a 9000 caliper. However, with 9100 it is either open or closed. While you can leave the lever partway between, the brake caliper will pop open if you pull the brake lever hard enough.
Contador wanted to stick with 9000 calipers because he can adjust them on the fly. The new 9100 calipers are either open or closed; there is no adjustment.
There are a few reasons Contador could want to adjust his caliper on the fly. One, if he gets a wheel change because of a flat, he could adjust if the new wheel’s rim width is different than his stock Bontrager Aelous 3.
Shimano 11-speed SRM
A cushioning ride
And a light ride at that
You can read more at Cyclingnews.com
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