Bike Forums - View Single Post - [Nexus gear hub] Ratchet+pawls vs. roller clutch?

11-19-22 | 11:03 AM

#22

Winfried

Senior Member

Joined: Aug 2011

Posts: 2,748

Likes: 139

From: Paris, France

Since the hubs are compatible, it was a snap swapping the 8R31 for the C6001.

Thanks to its needle bearings, I confirm the latter runs better, especially the previously crappy 4th gear, even while still running its original Shimano grease.

https://www.sheldonbrown.com/nexus8.shtml
https://www.2rad.nrw/project/shimano...abe-demontage/
https://wanderingdanny.com/oxford/20...-8r36-redline/

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Edit:

Stats: On average, after giving the crank a one turn spin by hand with the Brompton (ie. 16" wheel) on a stand…
- the 8R31 with the original Shimano grease stopped after about 5s
- the 8R31 after being bathed in ATF oil would stop after about 10s
- the C6001 with the original Shimano grease stops after about 15s.

I guess the C6001 will spin a bit more the day I give it an ATF job.

Last edited by Winfried; 11-22-22 at 05:08 AM.

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