Semi-recumbent and crank forward bicycles Bicycles that use positions intermediate between a conventional upright and a recumbent are called semi-recumbent or crank forward designs. These generally are intended for casual use and have comfort and ease of use as primary objectives, with aerodynamics sacrificed for this purpose.
Semi-recumbent and crank forward bicycles Bicycles that use positions intermediate between a conventional upright and a recumbent are called semi-recumbent or crank forward designs These generally are intended for casual use and have comfort and ease of use as primary objectives, with aerodynamics sacrif.iced for this purpose.