Smartwall intelligently redistributes material around the tube cross section to increase lateral and torsional stiffness while adding the least weight. Smartwall was inspired by Cervélo’s aero bikes, whose shapes are driven primarily by low drag considerations. Reducing the frontal area of the frame is a part of an aerodynamically efficient design, but narrow tubes have inherent challenges when trying to construct a stiff and light frame. Smartwall addresses this elegantly.
Most unwanted frame flex is out of plane, putting one side in compression and the other side in tension. Thus, material farthest from the center plane has the greatest effect on improving stiffness. Smartwall adds material only at the outside walls, farthest from the center plane, to maximize lateral stiffness and minimize weight.
Smartwall clearly makes sense for all frames. In fact, we use Smartwall to set new standards in frame stiffness, strength and weight throughout the R series. And we still use Smartwall to create stiff and light aero frames.