An here’s is where the 3D printer starts to aid in prototyping and the build. The CR10s prints a high quality and strong ABS bearing holder (providing the right printer settings are used). Just for fun this part is bolted to the rear cross member and then wrapped in carbon fiber (after the bearing is pressed in).
Here’s the 3D model:
About a 1 lb rear triangle from an aluminum mountain bike frame hold the unpowered rear wheel. Either a 406 or 559 wheel can go in the back. An air shock provides suspension and is attached to the back of the velomobile ‘tub’.
Here’s a view that gives an overall perspective with a 406 greenspeed scorcher attached.