Hi Peter and all,

I built a small solenoid motor a few months ago while researching the Gray device. It is a converted R/C motor, solenoid driven, about 1000VDC 3-400us square wave pulse because of capture diode across coil to hold energy in the coil. Power comes from a step-charged 1uf, 3000 V. oilfilled cap, IGBT driver triggered by a photo-intrupter off the flywheel. Would run very fast but is VERY out of balance due to weight of solenoid plug. Probably had it up to about 4K a couple times.

I guess it is basically a Teal motor although I wasn't aware of his work in the past.

I watched the "video" on the web and mine is just the same but much higher voltage as I discovered the effects seem to multiply as the voltage goes up. All back EMF goes back into the solenoid to provide full use of the pulse for mechanical effort.

There is a picture at: http://tech.ph.groups.yahoo.com/grou...view/df46?b=26

The limitations to post pictures on this site seem to be very limited so I just put it in there and they were gracious enough to accept it.

Could post a video if anyone interested.....

Enjoy
Ben