Drive arrangement for a bicycle

A drive arrangement for a bicycle, comprising

• a chain, wherein the chain includes inner and outer chain links, respectively comprising inner chain link plates and outer chain link plates, at least some of the inner chain link plates comprising:
• an inner side;
• an outer side;
• two ends having annular regions, each annular region having a round outer contour;
• a connection region, which connects the two annular regions;
• and
• two collars, of which one collar is arranged at the inner side directly adjacent to each of the two annular regions;
• wherein the connection region of the inner side has a recess having an inner side material thickness, and wherein the inner side material thickness is smaller than an annular region material thickness of the annular regions;
• and wherein a surface of the recess comprises a first curved part-face which adjoins a planar part-face;
• a front chain ring which is rotatable about a chain ring axis and has a multiplicity of teeth which are constructed for engagement with the chain, the front chain ring comprising:
• a plurality of teeth formed on a circumference of the chain ring and having a first and a second group of teeth, wherein at least some of the teeth of the second group of teeth are arranged in an alternating manner between the teeth of the first group of teeth, each of the first group of teeth being wider than each of the second group of teeth;
• wherein each tooth has a load flank via which force is transmitted between an adjacent roller of the drive chain and a respective tooth of the plurality of teeth;
• wherein each load flank is geometrically designed and arranged such that the load flank includes continuous upper and lower portions, the upper portion of the load flank having a first radius of a first load flank curvature and the lower portion of the load flank having a second radius of a second load flank curvature, such that the surface of the load flank changes direction when the upper load flank meets the lower load flank;
• a rear wheel sprocket arrangement rotatable about a sprocket rotation axis and comprising a plurality of sprockets which are coaxial with respect to the sprocket rotation axis, the plurality of sprockets arranged with axial spacing from each other and having different numbers of teeth which are constructed for engagement with the chain,
• wherein the rear wheel sprocket arrangement has a gear range quotient which is formed by division of the number of teeth of the sprocket having the largest diameter by the number of teeth of the sprocket having the smallest diameter, and has a packing density quotient which is formed by division of a number of sprockets in the sprocket arrangement by the axial spacing of axially outermost sprockets from each other measured in millimeters, and
• wherein the rear wheel sprocket arrangement has a gear range packing coefficient, formed from a product of the gear range quotient and the packing density quotient, that is greater than 1.25;
• and
• a rear derailleur.