12 times more output than input, dual mechanical oscillation system !

[Eddy Currentz]

It would be easy to drive a pendulum with a Bedini coil. They are bidirectional and you can control the amount of drive to the pendulum.
If you built the pendulum, like I did the Milkodini, on a wheel with only 4 or 5 magnets, you could swing the pendulum as high as you want at it's natural frequency.
This coil is very efficient and would provide all the drive you need for a 10 to 15 lb pendulum.
Dealing with the secondary is a whole different can of worms.

[hansvonlieven]

G'day all,

Attached is the avi capture of a computer simulation of a Milkovic device. I have only programmed gravity into this, no allowance for friction or air resistance. The pendulum length is twice the distance between the balance beam's fulcrum and the pendulum's fulcrum.

The weights are such that when the beam is horizontal in a quiescent state there is perfect equilibrium.

Note the erratic movement. It gets much worse when you allow it to run further but the entire file is over 26 MB, too big for posting here. Nevertheless this is an example of what happens when using these parameters.

The programme used is WorkingModel 2005.

This is just a short illustration of what I have been talking about.

Hans von Lieven

[DarkLight]

The period must be the same.
Pendulum and lever must move in synchrony

[Eddy Currentz]

That's an interesting simulation, but I'm afraid it bares little resemblance to reality. In my experience, when the pendulum swings down the lever swings up. There is some irregularity in the motion, but it is confined to small erratic excursions. They more resemble harmonic or parasitic oscillations. I have never had a machine even come close to behaving like that simulation.
The position of the pendulum and the load with respect to the fulcrum changes the dynamics of the machine. The length of the pendulum is also a critical parameter.
To achieve optimal performance, a fair amount of testing and adjustment is required. These things can act like real slugs when they aren't happy. But once you get the load impedance matched to the pendulum, the machine comes alive.
Milkovic claims that there is no connection between the load and the pendulum, and this is correct in a narrow sense. You can extract energy from the secondary, or hold the lever still, and it makes little difference to the pendulum (within certain parameters). However, there is a point of resonance where the secondary is reflecting energy back to the pendulum in an additive way. This is the tuning we're after.
A short, heavy pendulum works well. Look at Milkovic's machines and see how an optimal setup is constructed. Why reinvent the wheel when someone else has already done most of the work?

[hansvonlieven]

G'day Eddy,

I will post simulations soon of different layouts. This particular arrangement shows very graphically what you are up against.

Believe it or not, this is actually the optimum harmonic combination. It generates the most energy with the least losses. The natural frequency of the balance beam is one octave above the natural frequency of the pendulum. Any attempt to bring these erratic movements under control like shorter pendulum, springs, discord between balance beam and so forth will get the vibrations under some control but will also cost you much of the available energy.

I have a few ideas of how maximum energy can be obtained without creating rogue frequencies but the system is still incomplete, though promising.

You are correct when you say that a very short pendulum length diminishes the problem albeit it does not cure it altogether.

Hans von Lieven