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Bike Geometry for the public domain

In creating our PULSE concept bike we measured and modeled many standard bike parts.  Items like the chainrings and chain itself were quite time consuming.  We are sharing the geometry we used with the hope that it will save you time in visualizing your own human powered transportation concept.  The attached zip folder contains 3D geometry for a standard 3/32×1/2inch chain and dimensionally accurate drawings for 46 tooth chainrings with 144 and 110 Bolt Center Diameters.

drivetrain geometry

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