Silent Clutch Rear Hub, Feb 25, 2022 · The Onyx Racing Product hubs are silent thanks to the patented sprag clutch mechanism found on every rear hub produced by Onyx, all the way from the slender OHM junior BMX hub to the robust and time-proven Classic mountain bike hub. There is no clicking from the pawls of an internal ratchet from wheels built with these hubs. Dec 4, 2004 · Bicycle Mechanics - Shimano RO-80 silent clutch hub - In my quest to get my bike to work below temps of -15 I found reference to a shimano RO-80 silent clutch rear hub. The term to look for for the most common silent design is a "roller clutch hub". Sprag clutches are one-way clutches that have infinite number of engagement points, close to zero friction and fully silent operation. With the aid of the patented sprag clutch freewheel mechanism, you can roll silently and surprise the pack when laying the power down which transfers instantly to the rear wheel with next to zero losses. Fits 7/8/9/10 speed cassettes. Shimano used to make some that were primarily sold on police bikes -- finding one used can be a way of getting a wheelset that has them. We have a great online selection at the lowest prices with Fast & Free shipping on many items! In the early 2000s Shimano produced hubs with a silent clutch rather than with freehub pawls. My LBS was under the impression that Aug 10, 2021 · There are many videos about this HUB on YouTube, technically what Shimano says, it should produce sound for a certain speed, than the clutch system mute it, and became silent like mine. qy, xeam, pbf1c, qdlxx, xf, 1lvr2, pwoj, fj, retgn, 7qkwe,