SINE QUA NON...

[iacob alex]

...or the keystone,the essential  requirement for a possible gravity powered device can be  the TIME FACTOR... so, to  let the phenomena(gravity and inertia) some free time...to increase the "unbalance"(as seen ,not as  a common "weighting "machine)...to give the green light for a cascade-type fall/flow and to store("coil") this ,as a heavy hub rotational inertia.

As a case may be,we must imagine the design not only as a comparative/weighting device,but as cascade-watwerfall coiling/loadind up design.

It seems that a pendular arrangement answer to these requirements...

When the device is big enough(something between Bessler or Vandugegs and Aldo Costa),we can dream of some real results:that it will do his job...the self-running,as a first step and the free power,as a second step.

        All the Bests!  /  Alex

[iacob alex]

....this first image,vague feeling can be illustrated by the word cascade,so falls,waterfall,cataract,chute,niagara,downpour,shower,deluge,flood,rush,slide,avalanche...

I hope ,one of them will suggest you the first step in your own design.

      All the Bests!  /  Alex

[iacob alex]

           
     Hi P-Motion!

  I wish you to be ahead of the game...

  If you intend a wooden shape,take a look at   www.evert.de  ,there is a simplified model(also wood),a Bessler size.

  Take care about the "falling chimney" effect,if you intend a bigger size.

  Type on net "Aldo Costa" ,so to admire  an imprssive exploit.There are a lot of images   

      All the  Bests!  /  Alex

[ChileanOne]

Gravity motors are possible, but you have to rethink the whole idea. One wheel alone will never do it. You need to work with at least two wheels, transfering the balls at a precise point between them, and using the principles of lever and pendulum (thinking on the center of the wheel as a pivot point instead of a complete circle), you will get it going as if it would be magical.

Soon you'll realise that to be practical, you need very dense materials, and a lot of wheels working together.

But is possible.

[Bessler007]

  I love an idea I can get my mind around.

And by using leverage, it will be a principal that a 5th grader can understand.