The submitted motor-generator for an electric car has many rotors. But it differs from usual that radiuses of rotors are various. This difference of radiuses allows to use energy of centrifugal acceleration for reception of superfluous capacity.

During start all rotors work in a mode of the motor. At higher speeds or during a stop at a traffic light only the central big rotor works in a mode of the motor. Other rotors with small radius work in a mode of the generator and charge the accumulator. Rotors can be in quantity 3 too.

At very high speeds 2/3 of coils of the big rotor can work in a mode of mutual generation. I.e. only 1/3 coils will consume energy from the accumulator.

Various variants of this generator are possible. There are 5 different kinds - including multiaxial variants too. This motor-generator was invented in 1998. But then nobody trusted that it can develop more energy, than will consume for promotion of itself. But known experiments of Chas Chambell in 2007 have proved that centrifugal acceleration can create over-unity capacity at a difference of radiuses of weight.

It is proved that this motor -generator can create minimum of 50 times more energy, than spends for rotation of itself.

Now many inventors use this principle of a difference of radiuses and declare their authorship. But they cannot explain the reason of occurrence of superfluous energy. Or they attribute this effect to constant magnets. Until 2001 these magnetic generators did not work. But we had a theoretical explanation of this effect in 1998. This theory can be looked on a Web site: http://technogeo.ucoz.com/