Convertible push-bike

A kit for converting a bicycle from a pedal-powered bicycle to a push-powered bicycle, comprising:

• a collapsible crankset, the collapsible crankset (i) including a spindle, two crankarms, and two collapsible pedals and (ii) configured to be convertible from a pedaling position to a backward-retracted position;
• wherein,
• the spindle is connected at each end to one of the two crankarms, at least one of the crankarms reversibly articulating with respect to the spindle, the articulation of the crankarm retracting the crankset from the pedaling position to the backward-retracted position;
• each of the pedals articulating with its respective crankarm for collapse into a housing to protect the child's legs;
• and,
• the crankset remains entirely intact for converting from a pedal-powered bicycle to a push-powered bicycle without requiring disassembly and re-assembly of the crankset during the process of teaching the child how to ride the convertible push-bicycle.
• conversion adapters to install the articulable crankset into a bicycle;
• and,
• instructions for assembling the articulable crankset into the bicycle and converting the bicycle from a pedal-powered bicycle to a convertible bicycle that can also function as a push-powered bicycle.

A method of learning how to ride a bicycle, the method comprising:

• obtaining a convertible, push-bicycle having
• a steering mechanism operably connected to a front wheel and a frame, the frame operably connected to a rear wheel and a collapsible crankset, the collapsible crankset (i) including a spindle, two crankarms, and two collapsible pedals and (ii) configured to be convertible from a pedaling position to a backward-retracted position;
• a housing operably connected to the frame and configured to receive the two crankarms and the two collapsible pedals in the backward-retracted position to protect a rider's legs;
• and,
• wherein,
• the spindle is connected at each end to one of the two crankarms, at least one of the crankarms reversibly articulating with respect to the spindle through a reversibly fixable joint, the articulation of the crankarm retracting the crankset from the pedaling position to the backward-retracted position;
• each of the pedals articulating with its respective crankarm from (i) the pedaling position to (ii) the backward-retracted position for the receiving by the housing to protect the rider's legs;
• and,
• the crankset remains entirely intact for converting from a pedal-powered bicycle to a push-powered bicycle without requiring disassembly and re-assembly of the crankset during the process of teaching the rider how to ride the convertible push-bicycle;
• articulating the crankset from (i) the pedaling position to (ii) the backward-retracted position for the receiving by the housing to protect the rider's legs;
• and,
• operating the convertible, push-bicycle with the crankset in the backward-retracted position.