The motor casing took about 3 weeks of pure cad modelling. Firstly, we modelled 7 or 8 protoype revisions. All of which, were 3d printed on joes prusa. Joe concieved the idea and built the programmable board. However, the design work for the motor controller mostly involved complex surfacing. So, I re-modelled over some of the scan geometry of the excerise bike. This new surface data gave me points to model the motor casing. Thus, I modelled around the components and bike stem, to create the geometry. Furthermore,the weld bead on the peleton bike joints varied slightly from bike to bike. As a result, I had to create variable tolerance between the connecting surfaces. I used solidworks design software to 3d model, render and output all CAM files for production.