Motorized wheel system

A motorized wheel system comprising:

• (a) a shaft comprising a proximal end and a distal end that are connected by an elongated middle portion having a circular cross section, wherein the proximal end of the shaft is connected to a collar fastener, and wherein the distal end of the shaft is attached to a connector;
• (b) the collar fastener configured to attach to at least one of a bar, shaft, and rod of a transportable device, wherein the collar fastener is detachable from the transportable device, and wherein the collar fastener contains a first portion and a second portion that partially enclose a grip portion and tighten to adhere the collar fastener to the transportable device;
• (c) the connector connecting the distal end of the shaft to an outer retention enclosure, wherein the connector provides a limited rotation angle between the distal end of the shaft and an outer surface of the outer retention enclosure;
• (d) the outer retention enclosure comprising the outer surface, an inner surface, and a substantially hollow interior at least partially disposed around a motor unit and a wheel structure;
• (e) the wheel structure comprising a wheel and a stabilizing unit connecting the wheel to the outer retention enclosure;
• (f) the motor unit comprising a motor and a motor mount connecting the motor to the outer retention enclosure, the motor unit configured to provide rotational movement to the wheel structure;
• (g) an independent energy storage system comprising at least one of a battery and a solar cell;
• and
• (h) a power control mechanism configured to adjust power provided from the motor to the wheel structure, thereby adjusting the speed of the rotational movement of the wheel structure, wherein the power control mechanism is attached to the transportable device.