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DEAL DRIVE AUTOMATIC
circa 1982
DYKINS INDUSTRIES
BY USING AN EXPANDING & CONTRACTING CHAINRING MECHANISM BUILT
INTO THE CRANK SET, THE BICYCLE PROVIDES UP TO 16 GEAR RATIOS THAT RESPOND
AUTOMATICALLY TO THE PRESSURE EXERTED UPON THE PEDALS. IT IS THUS AN
AUTOMATIC DRIVE SYSTEM THAT DOES NOT REQUIRE ANY OF THE MECHANISMS
ASSOCIATED WITH GEARED BIKES.
Photos above taken at the Canada Science and Technology
