Bike frames are simple on the surface ... OpenBike to make the process accessible to more people. An open-source set of files designed for CNCs and 3D printers, the OpenBike uses readily available ...

It's 75 pounds with some 10-15 pounds in weight savings over a comparable aluminum frame, per Roberson. Part of that is explained by the Hero being a big bike capable of carrying riders of all sizes.

The bicycle frame is the main load bearing structure of the bicycle and in order to select materials for its construction or to make an efficient frame design the loads carried by the various ...