Manual Reel with 1:16 Overdrive
myminifactory
A DIY manual reel with a high-torque overdrive system utilizes a compact 2-stage planetary gear transmission housed in a repurposed Red Bull 250ml can. This innovative gadget allows for swift and efficient retrieval of lightweight items, such as keys or money, from upper floors of tall buildings without the need for an elevator. Each turn of the hand crank propels the reel to rotate 16 times. Moreover, this project serves as a hands-on learning experience about planetary gear transmissions while promoting eco-friendliness by upcycling discarded materials into functional devices.
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