Rzeppa Joint (Constant Velocity) Mechanism
thingiverse
Rzeppa Joint is a type of mechanical coupling to transmit rotational motion through a variable angle. Unlike a Universal Joint, the input and output speeds are the same. This mechanism is typically found in automobile applications. Print the parts and assemble them as shown in the pictures. 1 of each part, and 6 balls are needed. 3 pieces of 1.75mm filament are used to lock the shafts in place. A specially designed retaining ring is used to connect the input shaft. Also uploaded are the outer and inner races, without the shaft. These parts are uploaded just for reference. https://www.youtube.com/watch?v=1Ky5V9HLle4
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