Homopolar Generators (N-Machine) by Bruce de Palma

[PaulLowrance]

That's amazing Tesla built such a machine so long ago. What blows me away is Tesla "free energy" electric car. It is so fascinating. Tesla's nephew, Petar Savo, swears by it.

A few links:

http://www.keelynet.com/energy/teslcar.htm

http://www.keelynet.com/energy/teslafe1.htm

http://waterpoweredcar.com/teslascar.html

http://peswiki.com/index.php/Tesla's_Pierce-Arrow

scroll down to "Tesla's Electric Car"
http://rexresearch.com/feg/feg2.htm

Telsa's letter about the car:
http://www.nuenergy.org/rare/tesla_car.htm

Google search:
http://www.google.com/search?hl=en&q=Tesla+%22Electric+Car%22+Pierce+Arrow&btnG=Google+Search

Paul Lowrance

[mikestocks2006]

Well, I can't tell if one can get OU out of a setup like this but I've tried the concepts and they work.

Rotating the magnet along with the disk, in essence an statorless motor. There is no BackEMF there right?
No windings no stators for back drag. The magnet was spinning nicely, pretty fast I might add.

I also tried to get a homopolar generator going. It works! No stator there either. I had to spin it pretty high,
to get 22 millivolts out of a 18mm(0.7?) dia x 3mm thick Ni plated neo 2000 gauss craft magnet. Used a 5/64" titanium drill bit for the center hole. Heck took about 30 mins to drill. It's tough and I went slowly so the magnet didn't heat up much.
Then used a Dremmel tool to spin it, about 1/2, 2/3 full scale speed it's about 20000 rpm I'd say.


I was reading this and it was intriguing to get such high amps with no back EMF no drag. So I wanted to try it. Remember the magnet is spinning along with the pickup disk. This is NOT the same as stationary magnet and disk spinning as per Faraday
http://www.gerrior.net/AdvancedTech/01.BruceEDePalmaNMachine.htm#Second

DePalma was using smaller speeds but much larger mags in OD and 2 of them, where as I used one.
?A typical machine constructed with ordinary loudspeaker ring magnets of dimensions o.d. 2-7/8", i.d. 1-1/3" and ?" thickness, two of each epoxy-cemented on either side of a conducting disc 1/8" thick, delivers 30 millivolts at 3450 rpm. The field strength of the magnets as supplied is about 1000 gauss.?

Someone mentioned the Navy, well they have some interesting things going, 6000 Amp units nice!
http://www.vektrex.com/Products/homopolar%20motor.html

Also:
?Under this contract, GA will deliver a 36.5-megawatt, 120-rpm advanced design prototype motor, motor drive, and support equipment..?
http://www.ga.com/news.php?subaction=showfull&id=1109623897&archive=&start_from=&ucat=&

Some nice size power there using homoplar designs.

Not sure if DePalma?s designs/ideas are that insignificant?..There is a lot going on here.

The main obstacle seems to be the ability to draw the huge currents the device is capable of, through the rotaing contacts. Maybe mercury wetted pickups might do the trick? Since there is no BEMF, no stator to act the drag against, maybe an OU device is possible?

[innovation_station]

hello there is a new liquid superconductor that will do the job fine liquid a room temp

[kentoot]

Higher voltage for the faraday disk possible

If we replace the solid metal disc with a "spiral coil" instead, would it generate more voltage (less current) ?? please see picture 1. The center end of the spiral coil connects to the metal shaft, while the outer end connects to the metal ring.

The number of spiral turns could be somehow related to the voltage output. I guess we can also use a circular PCB with spiral trace pattern instead of a wire coil, that is if not much current is extracted.

Then this spiral coil would be sandwiched between 2 disc magnets, and rotate them all together (no stator). Voltage output is between the shaft and the metal ring. Please see picture 2.

What do you guys think ? would this work ? Sorry, I want to try to build one, but now on extreeeemly limited budget.   So for now just an idea.

[Gearhead]

kentoot

I have a generator that looks almost like the one in your drawing.  It has two huge  speaker magnets with a winding between.  My winding loops from near the shaft past one magnet around the top edge and back around  toward the shaft next to the other magnet.  I had hoped to increase the voltage this way.  It didn't work.  The voltage remained the same.

Perhaps a spiral winding will work.