>From the design, I see horizontal mass displacement are not relevant. What is
left is vertical movement. I don't think any sinusoidal movement lead to energy production this way, otherwise we should notice such anomalies from innumerable industrial devices (?). Therefore we should examine the waveform of the masses. Second or higher orders of harmonics? My favorite is the second because it make the waveform asymmetric. Asymmetry is interesting because lot of interesting things based on asymmetry like diodes, pumps, mechanism capturing energy from waves. For example suppose gravitational pull down is sensitive to velocity. On a symmetric movement (sinusoidal) net gain is zero but not on asymmetric ones. Now are there common machines around us involving heavy parts to asymmetric movements? Not yet found one. So let design one of them. Could it resemble to RAR?
