Bicycle hub ratcheting mechanism.
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Previously:
https://www.homemadetools.net/forum/...886#post194505
https://www.homemadetools.net/forum/...985#post191178
https://www.homemadetools.net/forum/...974#post156905
https://www.homemadetools.net/forum/...718#post108237
https://www.homemadetools.net/forum/...103#post125829
