Provides information on the GE 264 Ventilated Commutating Pole Motor, prepared by the MMTB dated 4/8/1922. Gives graphs for various gear ratios and wheel sizes. Would have been used for gear and wheel size selection. This type of motor was used in X 217 - see reference.Yields information about the motor used in Birney X 217Document printed on foolscap paper.tramways, technical information, tramcars, electrical equipment, motors, x class, tram 217