An electromagnetic machine comprising: a housing ; a stator assembly disposed generally within the housing , the stator assembly including a stator plate defining an opening , and a plurality of coil modules coupled to the stator plate ; a bearing assembly disposed in an opening defined in the housing and the opening defined in the stator plate ; an axle coupled to the bearing assembly in a rotatable fashion such that the axle is rotatable relative to the housing and the stator assembly ; and a rotor assembly fixed to the axle and disposed generally within the housing and including a rotor housing that defines a circumferentially extending channel that is sized to receive a portion of the stator assembly therein; characterized in that : the housing has an access window defined therein; the electromagnetic machine further comprises a locking mechanism configured to selectively prevent and permit rotation of the stator assembly about the axle within the housing ; the stator assembly includes a circuit board formed from a plurality of circuit board sections electrically connected together, each of the plurality of circuit board sections being electrically connected to one or more coil modules of the plurality of coil modules; and in response to the locking mechanism being deactivated, the stator assembly is configured to rotate relative to the housing such that a desired one of the plurality of circuit board sections is removable through the access window . a housing ; a stator assembly disposed generally within the housing , the stator assembly including a stator plate defining an opening , and a plurality of coil modules coupled to the stator plate ; a bearing assembly disposed in an opening defined in the housing and the opening defined in the stator plate ; an axle coupled to the bearing assembly in a rotatable fashion such that the axle is rotatable relative to the housing and the stator assembly ; and a rotor assembly fixed to the axle and disposed generally within the housing and including a rotor housing that defines a circumferentially extending channel that is sized to receive a portion of the stator assembly therein; characterized in that : the housing has an access window defined therein; the electromagnetic machine further comprises a locking mechanism configured to selectively prevent and permit rotation of the stator assembly about the axle within the housing ; the stator assembly includes a circuit board formed from a plurality of circuit board sections electrically connected together, each of the plurality of circuit board sections being electrically connected to one or more coil modules of the plurality of coil modules; and in response to the locking mechanism being deactivated, the stator assembly is configured to rotate relative to the housing such that a desired one of the plurality of circuit board sections is removable through the access window . the housing has an access window defined therein; the electromagnetic machine further comprises a locking mechanism configured to selectively prevent and permit rotation of the stator assembly about the axle within the housing ; the stator assembly includes a circuit board formed from a plurality of circuit board sections electrically connected together, each of the plurality of circuit board sections being electrically connected to one or more coil modules of the plurality of coil modules; and in response to the locking mechanism being deactivated, the stator assembly is configured to rotate relative to the housing such that a desired one of the plurality of circuit board sections is removable through the access window . <EOS>