Chalkalis Gravity Wheel

[tagor]

I would suggest starting with a full rotation pendulum. This mode would be much easier than a swinging type. If you need any more help, let me know.

I have one !
how can I get OU ?

[teslaalset]

This construction can be simplified to the following test case:

Is there a difference in kinetic energy gain between the following two cases:
-you drop a stone from a bridge
-throwing a stone downwards from the same bridge

Kinetic energy gain when dropping = delta (potential energy) = mass * gravitational constant * delta hight.
Kinetic energy gain when throwing = deta (potential energy) + throwing energy = mass * (gravitational constant + extra acceleration) * delta hight

In other words: is there a gain in the energy that was spend by throwing down?
Energy spend to throw: E=F*t=m*a*t, with "a" being the extra acceleration caused by the throw.
Should be easy to calculate how much the extra kinetic energy is at point of reception

I see some resemblance with bungee jumping 

[tagor]

...

In other words: is there a gain in the energy that was spend by throwing down?
Energy spend to throw: E=F*t=m*a*t, with "a" being the extra acceleration caused by the throw.
Should be easy to calculate how much the extra kinetic energy is at point of reception.

no
no gain , because gravity is conservative ...

[teslaalset]

no
no gain , because gravity is conservative ...

I agree with you.
If you work out my given example case and use an elastic band than you should see following:
If the claimed extra energy at the bottom is not tapped, the extra energy will be spend in launching the stone upwards after reaching its minimum hight.
If there would be an energy gain, the peak hight, obtained after spending the upward force, will be higher than when simply shoot the stone upwards from the bridge with the same energy spend for throwing down the stone.
This will not happen, otherwise this would have been observed much earlier in time.

[TechStuf]

no gain , because gravity is conservative ...

Yes, but not too conservative.  Besides, sometimes two conservatives, like, say, gravity + angular momentum = .......