Overrunning Clutch / Freewheel
Description
A simple and compact overrunning clutch or freewheel. See the [Wikipedia](https://en.wikipedia.org/wiki/Freewheel) page for an explanation of what it is and what it can do. If you ever wondered (when riding a bike) why the pedals stop rotating as soon as you stop pedaling, this magnificent device is the reason why. It basically is a mechanical diode. After printing *clutch.stl*, you want to move the two *fingers* around carefully, little bit up, little bit down, little bit left and right until they start moving around smoothly. And yes, a single finger would have been sufficient. Consider the second finger a *hot backup*. Use a few drops of glue to glue the covers to the clutch. Only the ratchet needs supports.
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