Rotation Stopper for 'Sunstar' Electric motor for bicycle
grabcad
The metal sheet forming process involves using two unthreaded PEM spacers and a moldable, pliable foam block spacer. This assembly is attached to the motor unit's existing mounting points. A 5mm silicon O-Ring is used for attaching the assembly to the lower front frame bar. The foam block adjusts according to the frame's geometry. I examined different bike frames from GrabCAD to identify a suitable solution and found this design fits various frames. Offering multiple sizes of O-Rings would accommodate diverse frame sizes at minimal cost. A similar concept could be applied to the rear wheel frame arm, but its varying geometries may limit compatibility.
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