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Cannondale wants all to move to bigger bottom bracket - BikeBiz

Cannondale wants all to move to bigger bottom bracket

Today at the first day of Eurobike, the international trade show held in Friedrichshafen, Cannondale announced it would like to offer up its bottom bracket size as a free international standard. Designer Chris Dodman said all other bicycle interfaces had increased in size in the last 100 years, the BB size is the only one to remain the same.
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Cannondale introduced its 30mm spindle in 2000. The standard BB spindle diameter is 24mm.

A fatter spindle "externalizes crankset bearings to gain a stiffer pedalling system," said a Cannondale press release at today's launch of the BB30 standard. This was held away from the Cannondale show booth because the new standard is "neutral", said Cannondale Europe president Jeff McGuane.

Chris Peck, Cannondale VP of R&D said: "As an industry, we work with a number of constraints that can stifle innovation. By offering our BB30 as a free international standard, both frame and component companies can offer consumers more choice and better performance. For example, Specialized has adopted our standard for their F.A.C.T. crankset."

Info, engineering drawings and tech notes for BB30 can be found at the website below.

Listen to this morning's full presentation on a podcast by Bike Biz editor Carlton Reid. The podcast is on iTunes or at other podcast catching places. Search for 'Cycling News and Views'.

PIC: Chris Dodman, Cannondale's British designer, based in Basle, Switzerland.

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