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Zipp wrong1

This cog is incorrectly installed on a Zipp freehub body. The freehub’s design allows the cog to be slid on in the incorrect position. The next rail counterclockwise from the freehub body’s stepped rail is angled on its leading edge (rather than being wider and squared-off as in the Xentis and Bontrager photos to come). This flaw means that the cog’s low step adjacent its narrow tab (aligned with the “11-23B SF3” stamp) can slide on over the angled back edge of the rail. When installed in this position, the narrow tab encircled in red is the only tab that the cog contacts, and this puts it under great strain. Photo courtesy Dan Large of Campagnolo USA