NOVELTY - The DC motor (29) connected to DC battery (32) is provided on bicycle frame, in engagement with tuned centrifugal slip clutch (30) engaged with rear wheel hub assembly to selectively drive the rear wheel. The two stage start run control circuit is connected with the DC battery. The start run control button (52) on steering assembly is connected to control circuit to selectively drive the bicycle assembly.    USE - Electric bicycle assembly or tricycle assembly, four wheel electric vehicle.    ADVANTAGE - The electric bicycle assembly is selectively provided with solar panel adapted to charge the batteries thereby recharging the batteries without readily available electric source. The electric bicycle assembly is having light weight, high temperature DC electric motor with 80% or better efficiency and tuned centrifugal slip clutch in combination thereby results in single stage gear reduction having improved efficiency over multi stage gear reduction by reducing overall mechanical friction which wastes energy. The dramatic lurch forward by bicycle when start run button is engaged, since the tuned centrifugal slip clutch is used. The two stage start run control circuit prevents high current rate drainage of batteries to increase the operating range and efficiency of electric bicycle, without using energy wasting rheostats and voltage dropping resistors and/or expensive solid state controllers.    (US2001000284-A1)   NOVELTY - The DC motor (29) connected to DC battery (32) is provided on bicycle frame, in engagement with tuned centrifugal slip clutch (30) engaged with rear wheel hub assembly to selectively drive the rear wheel. The two stage start run control circuit is connected with the DC battery. The start run control button (52) on steering assembly is connected to control circuit to selectively drive the bicycle assembly.    USE - Electric bicycle assembly or tricycle assembly, four wheel electric vehicle.    ADVANTAGE - The electric bicycle assembly is selectively provided with solar panel adapted to charge the batteries thereby recharging the batteries without readily available electric source. The electric bicycle assembly is having light weight, high temperature DC electric motor with 80% or better efficiency and tuned centrifugal slip clutch in combination thereby results in single stage gear reduction having improved efficiency over multi stage gear reduction by reducing overall mechanical friction which wastes energy. The dramatic lurch forward by bicycle when start run button is engaged, since the tuned centrifugal slip clutch is used. The two stage start run control circuit prevents high current rate drainage of batteries to increase the operating range and efficiency of electric bicycle, without using energy wasting rheostats and voltage dropping resistors and/or expensive solid state controllers.    (US2001000394-A1)   NOVELTY - The DC motor (29) connected to DC battery (32) is provided on bicycle frame, in engagement with tuned centrifugal slip clutch (30) engaged with rear wheel hub assembly to selectively drive the rear wheel. The two stage start run control circuit is connected with the DC battery. The start run control button (52) on steering assembly is connected to control circuit to selectively drive the bicycle assembly.    USE - Electric bicycle assembly or tricycle assembly, four wheel electric vehicle.    ADVANTAGE - The electric bicycle assembly is selectively provided with solar panel adapted to charge the batteries thereby recharging the batteries without readily available electric source. The electric bicycle assembly is having light weight, high temperature DC electric motor with 80% or better efficiency and tuned centrifugal slip clutch in combination thereby results in single stage gear reduction having improved efficiency over multi stage gear reduction by reducing overall mechanical friction which wastes energy. The dramatic lurch forward by bicycle when start run button is engaged, since the tuned centrifugal slip clutch is used. The two stage start run control circuit prevents high current rate drainage of batteries to increase the operating range and efficiency of electric bicycle, without using energy wasting rheostats and voltage dropping resistors and/or expensive solid state controllers.