Comparison of two systems - G. Shipov inercoid and my own concept.

 The problem of inertial propulsion is based on manipulation of centrifugal force rarely by changing location masses in linear movement. That aim can be achieved by application of two ways, one is based on adding the mass in proper hemisphere of rotation and the second is based on changing the speed of rotation of those masses. Two rotating masses can cancel the problem of side centrifugal forces because they are paired. When the masses are located on the same side and not on opposite sides the force is occurring, differently to the situation in which they are located on opposite sides if they are synchronized the force is equal zero. In Inercoid of G. Shipov they are forced to moving faster in forward part of the circumference and they don't touch external rim (there is no external rim at all in this case) thus don't need any bearings, different power is used from the DC motors to propel them faster in forward and slower in rear part of the system.  

In my solution the system is working more liquidly, however require bearings (linear and ball bearings). My system is based on application of special rim located on the outside and its curvature, which is limiting escape of the masses due to centrifugal force. So, the system operation is based only on the same current, no change in voltage is needed supplying the DC motor nevertheless the motor will get more voltage on continuous speed up needed to gain more propulsive force. Changing in speed is caused only by this curvature and the changed in time distance between the mases and the center of rotation. If the massed are close to the center of rotation the centrifugal force is falling also to almost zero, due to the minimal road to go for the masses. If the masses are passing in highest point of the system, they also have a potential in centrifugal force strength implicating from faster movement on more distant orbit around the center point of rotation.