Newman Motor Replication- Brushless Commutator

Just a quick update on my Newman motor replication.
My goal here was to reduce friction and I was tired of adjusting the commutator all the time. My concern with going with a brushless commutator was that it would somehow reduce the back emf. I installed a neon bulb to verify that I'm still getting output from the coil.
I also took this time to add more wire to the coil, I added aprox 500 more feet (700 feet was initial run) for a total of 1200 feet total (which is still not enough)
The new commutator is made from a Reed type switch taken from an alarm system.
It's triggered by a small magnet that I mounted to a hard drive platter. I simply timed the magnet to cross the reed switch turning the power on when I want it to. Nice thing is, it's now fully adjustable!
In this video the motor is drawing aprox 40 milliamps while lighting a neon bulb.
In my next video I will be removing the generator I made on the end to try and get rpms up to charge a bank of caps and or a battery.

Category:

Science & Technology

Tags:

• Newman
• Motor
• replication
• reed
• switch
• commutator

[crazzieg]

Put another neon across the reed with a .01uF that will stop the arcing or use a 1N4008 to shunt the reed. The reason for the Xistor not working to well is because the reed can only be cycled just so fast,say a 1000 contacts/sec. A 400V darington with a trigger coil can go up to 100,000 contacts/sec or more easy.The Xistor should have stopped the arc all together if it was biased right. Googley relay suppression.

[TheB3e]

Thanks for the tips.. I have a few darlingtons sitting here and another Neon too.. will give it a try!

[TheB3e]

Ok, I tried your suggestion with putting a neon across the reed. What happens is the neon will light up but when it does, the neon "upstream" goes out. What Ive noticed is that as long as I have an electrical load on it, I dont have to worry about the neon. As soon as there is a load the neon goes out anyway sending all power instead, to the load (caps & Batteries)

[TheB3e]

The transistor did stop the arching and once it was introduced into the circuit I noticed I could no longer get the Neons to light up, with or without an electrical load. This may or may not be a problem. If I had a scope I could see if the the back voltage is still returning multiple high voltage charges back into the circuit.

What I found was with the transistor- battery charges slower but circuit draws less amps with larger loads. But will draw more when input voltages are increased.

[armakuni2000]

Very very interesting we could try to rise up the voltage more than this...

[TheB3e]

Yeah, Joseph Newman actually uses a transformet to up the voltage and has his supply batteries wired in series. He claims its "speed" or "time" that produces the big gains not the amperage. I notice by using 2 9V batteries wired in series the motor runs faster, and can fill a 200V cap bank very quickly. Pretty interesting stuff! Thanks for all the ideas.. lets keep going!

[rabidowski]

If I understand Newman's theory correctly, the key is to "trap" electron flow in the coil by shifting them back & forth fast enough. He originally used a 55 mile coil! When going small scale like this, you have to also increase the on/off (for the EMF collapse) so it would be fast enough to "trap" the electrons. His theory is that they move at the speed of light. So if your coil is too short, it's gonna be near impossible to time it right.

[digoron80]

Can I order one from you? If you are in the States, of course... Or can we contact and talk on the phone or something...

[jasonspinmaster]

better still you can always use an optic sensor

[bluestix]

Why not use a Hall Effect Switch?