Schmidt Coupling - Offset Coupling

thingiverse

The new design can be found at http://www.thingiverse.com/thing:243983. For those using metric slicing/printing software like Cura, download the "METRIC" file versions. Schmidt couplings enable shaft connection despite misalignment or changes in radial displacement during operation. The equal distribution of forces results in a sinusoidal overlap that facilitates constant torque transfer between input and output shafts. Assembling involves pinning the crank arm and handle with 1.75mm filament, using two sizes of pivots (6 shoulder pins and 3 1/8th" diameter pins), inserting metal spines into pivot holes or deforming ends with a hot knife, and fixing 3x 1/8th" pins with flattened ends. Attach coupling plates to endplates using 8-32 hex socket screws, tape, or acetone. The uprights are intended for ABS plate gluing, with "Stand2.stl" as a fixed upright and "StandPosable" for adjustable output shaft positioning. Print the base carefully to prevent warping. Print links, pivots, and crank shafts slowly with solid fill, while other parts can be loosely filled. Ensure proper printing orientation for better fit and sand surfaces for improved operation. Check out the provided YouTube videos for demonstration.