BICYCLE WITH AUTOMATIC GEAR SHIFTING

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FIELD : transport.SUBSTANCE : invention relates to control of automatic gear shifting of the bike with the help of centrifugal force of rotating loads with the following connection of add-on effort from rotating wheel plug from rare gear shifting actuation. Buckle plate (6) of stars is spaced concerning centrifugal loads on different wheel plugs. Cable (7) of rare gear shift control (3) passes through motionless axle (8) of plug attachment of front wheel and along (1) the bicycle frame. At that half coupling, passing add-on effort from the plug of rotating wheel directly connected with cable (7) of gear shift (3). Technical decision is directed on removal of mutual gage restriction of stars and loads, which provides bigger motion of centrifugal loads and greater number of stars in buckle plate.EFFECT : simplification of construction, widening of possible values of transmission ration in chain gear, gain in sensitivity to speed changing.2 dwg