New answers tagged piece-usage
When your function (such as an extending crane boom) gets to one limit or the other, this clutch gear ratchets instead of binding up the motor and all the gears in between. ETA: Forgot the second question. It has appeared in many sets, most recently the Fairground Mixer.
Build a catapult with it. The catapult arm would be attached to the motor. Pulling the arm down will wind the motor
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