FIELD: transport engineering; bicycles.
SUBSTANCE: invention relates to bicycles controlled manually and provided with pneumatic drive. First change-speed control mechanism 14 to select low speed is arranged at such distance from first change-speed control mechanism 18 to select high speed that for selecting higher or lower speed when riding hand of rider should be moved to one of two different positions along longitudinal axis of handlebar H, or different hands should be used for this purpose. Supply valve 54 is connected with pipeline 40 to deliver compressed gas to first pneumatic lower speed shifter valve 62 and to pipeline 42 to supply compressed gas to first pneumatic higher speed shifter valve 72.
EFFECT: provision of reliable and definite change of speed at minimum error in shifting.
15 cl, 6 dwg
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