the present invention provides an electrostatic motor wherein the poles of the stator have a substantial geometry in the shape of fixed “ comb - poles ” adapted to be crossed by moving “ comb - poles ” of the rotor . the fixed comb - poles are equally spaced apart , radially and inwardly extending from an electrically insulating hollowed outer cylinder forming the stator , while the moving comb - poles are equally spaced apart , radially and outwardly extending from an electrically insulating inner cylinder forming the rotor and located inside the stator . having all those combs essentially facing each other allows for taking full advantage of the electric force vector created between adjacent comb - poles of the stator onto the free moving rotor comb - poles when they are electrically charged . the rotor comb - poles become charged by passing through a stator comb - pole thereby eliminating any known collector devices . this geometry allows for making ac or dc motors using the electrostatic power with a theoretical efficiency of nearly 100 %.