Onyx hubs are known for their instant engagement, thanks to a Sprag clutch system that expands metal pins between two steel rings to engage. Because the pins are basically dragging on the rings’ surfaces, they rock into a locked position within a fraction of a degree of rotation, which is virtually imperceptible. The downside is […]
The post IB17: Onyx shows lighter prototype 1-1/2 clutch hubs, Campy FH body & more appeared first on Bikerumor.
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