Custom Dropouts

The video tutorial at: bikecad.ca/dropouts_from_static_drawings explains how you can either control dropouts parametrically or select from a number of commercially available dropouts in the form of static drawings. There is currently no way to add your own custom dropouts to the collection of static drawings on your own. However, you can e-mail me your dropouts in some vector based file format such as DXF, SVG or PDF and I can add your dropouts to the collection in the next update of BikeCAD.

Meanwhile, there is no such option with chainrings. All chainrings are defined parametrically through the available input fields and menus. You can however represent an aero chainring by selecting either 0 or 1 for the number of arms in the spider.