the snow bicycle comprises a main frame similar to the one used on a conventional bicycle . it features a rear drive wheel assembly removably connected to the main frame . the rear drive wheel assembly comprises two longitudinally - oriented wheels operatively connected between a two - section frame . a track belt is winded around the two wheels and two parallel sets of rollers are provided on each side of the lower inner side of the free track belt to support the rear of the main frame when the bicycle is on the ground . this provides a versatile arrangement that suitably combines stability and the ability of to reach high speed on various types of grounds , particularly snow or ice .