Open Source Bike
- OpenBike - Wiki page dedicated to recumbents, NC license. 3D printed concept. . There are other tube and connector concepts, worth investigating.
- 3D Printed + Carbon Fiber joints - 
- Cargo bikes for the 3rd world. These guys may be open to open source design - . Founder talks about holishift.
- Joints that are 3D printed and structural - . Sounds like a decent option. Did anyone ever replicate?
- Red Bull, with molds for carbon fiber -