Hi Luc

Just one more for the road, this should the the easiest to implement, the spring is vital as it keeps the  5" arm going in a small arc of about 43.43 degrees, this device would be the best way to make an ellipse from a few pivots, this could even be the system used by Skinner., regards Arto.

Hi gotoluc,
need to add an intermediate shaft to the drive bearings fixed to the walls of your box, upper shaft sprocket wheel has pressed from the outer surface of the leash near the electric motor; the lower end of the structure is a trapezoidal transmission pulley to pulley arm on disk.  The figure below:

Okay, I had the time to review all the ideas and have decided to go with havuhung (above post) idea since it can salvage the work I've already done. Good recovery on your part havuhung, thanks.

I wish to thank Artoj for all his ideas and drawings. I'm sure others who haven't built the elliptical assembly could consider the drawings and the above as a simple option.

I would also like to thank ARMCORTEX for a good idea which is not complicated to build: http://www.overunity.com/14655/1939-gravity-power-multiply-power-by-1200/msg407464/#msg407464

and thank you to alfilmx for the simplest of solution: http://www.overunity.com/14655/1939-gravity-power-multiply-power-by-1200/msg407524/#msg407524 
Please note one would need the ellipse groove to be about 1 inch deep so the shaft does not hit bottom when it comes in the narrow area of the ellipse since the lever becomes higher. Also, this setup would have more friction losses but should be fine for simple proof of concept build. It could of been fine for me if I hadn't built havuhung's first suggestion.

Great job guys

Thanks for sharing

Luc

My worry with this is that a single array wont allow us to tap into the energy without killing the inertia, same problem that chalkalis faced.


You should try a light load and see if by adjusting the speed of lever @ that exact moment you can re-energize it. I fear that this will be all or nothing, the whole machine, or it dont show any gain.

My theory is that we can make microcontroller unit, pwm feedback drive with encoder feedback, wich will basicly a very responsive subsystem that can control speed perfectly  given the speed order

And a main system that will detect change in lagging weight and send  commands to the subsystem, to  basicly emulate the Skinner upper part.
So a position feedback system detects when we are about to lose control and send new command to subsystem ( wich also has encoder system).
Motor drives can also use current feedback but that always needs to be modeled motor to motor and not as rock solid and universal. Always engineer for wors case when you dont know what you're doing...

If good logic framework is done, it can become basicly extremely flexible system, simply changing a few variables we become equivalent to skinner
machining a new piece.

I would be ready to make this if I see that this is not another joke by Aaron.

Nothing motivates me more than overunity and bragging rights. It wouldnt be really for the money since a bunch of  chinese chip crackers would undercut me.

Hmm can anybody guess ??

From my research there is a moment where energy can be harvested, if I see the chalkalis video.

This about the concept, chalkalis taps the wheel and chalkalis assistant puts wood exactly @ the right place, chalkalis cut wood all day with tap of his hands, or tiny motor.

Now, take bruce lee or conventionnal machine, to cut wood, he is sweating like a mad man. Get it ?? Tac tac with his pinky... but... dont interfere with swing

My best guess is that this is a synchronizer, wich exacts working is not really important, think ''multiphase'', think about overlapping the swings @ all costs

He overlapping the ''OU'' time period of multiple phase shift arrays.

With his asymetric orbit, he overlaps those moments in time, just as rectifier would with tip of phases. All array are out of phase by some degree.

Now comes in ''what orbit'' question... circular, elliptical, square or triangle ?... This is the real question .éé

Nice pictures Luc


If you look at the second one you can see quite plainly how the top of the botton shaft is made, it is a stub end into the bottom shaft, it has to turn and slightly move in and out of it, not much but it moves, the overall length changes as it moves through the ellipse. I have said this before we knew about this photo, if it doesn't do this it will lock to the input power at its stress point in the ellips.


Pitty we don't have more good quality photos at different angles, especially the top drive of the levers, but I'm sure I have it right.


regards


Mike


PS. I have also worked out that the system controls itself, I have posted this on the EF topic thread, this man was totally brilliant.


regards


Mike

The weight motion and base bearing operation resembles that in the bottom cone of the David Hamel 3-cone device.

I've posted a feature page about this at http://peswiki.com/index.php/Directory:William_F._Skinner%27s_1939_Gravity_Motor