The Theory of Operation needs simpler, step by step clarification.

The law of conservation of energy could have been beaten by a simple experiment
 
The proportion of the length of the resistance arm of the lever and force arm is 1:2,
The weight of the load and the force is 2:1.
The pivoting point of the lever fixed on the edge of the wheel.
The graphic above mainly means that by fixing a lever to the edge of a wheel, force will be saved without increasing the distance. The work gained is thus bigger than the work consumed.
W1(work paid)=F1*H (downward height) ,  W2(gained)=F2*H(upward height) , F2=2F1, W2=2W1.

How accelerated speed remains unchanged

According to the formula of the second law of Newton: F = ma, “F” and “m” are constant, but “a” changed. Any engines nowadays can keep acceleration only for a short time.
Only when the speed of a force-applying object is faster than or equal to that of an object applied on, can the speed of the object applied on increase.
Because the power of action should be more than that of the objects of resistance, the accelerating speed can go on, just like riding a bicycle downhill, while you can’t anyway speed it more than before at all.
We can keep “a (accelerated speed)” unchanged like “g (accelerated speed of gravity)” in the way as follows:
 
 
The motor and the battery are tied to the spokes securely

Given a flywheel fixed on a motor, which is set between the spokes of a bike rear wheel. Connect the flywheel with that of the rear wheel. When the motor starts, the flywheel connected to it drives the flywheel connected to the rear wheel in motion, then the rear wheel also moves, the motor and the rear wheel move simultaneously at the same speed. And the rear wheel theoretically moves at an ever increasing speed. The rear wheel can be used to start a generator. Thus the energy gained is much bigger than the energy consumed.