9t doesn't work because of the polygon effect. Read about it in Bikeradar's presentation of the XX1, where it was told the protos used a 9t cog from the Shimano commuter grouppo.
Unless Shimano decided touse a 10 mm pitch chain for their 1x11 group, then they could use an 11t in a 1/2" 9T cog diameter.
EDIT: damn you search and my lack of looking at dates... -_-
Although - a dream come true - finally a bike that goes to 11!!!
Mo cowbell.
Unless Shimano decided touse a 10 mm pitch chain for their 1x11 group, then they could use an 11t in a 1/2" 9T cog diameter.
EDIT: damn you search and my lack of looking at dates... -_-
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