Newman machine replica

[potatogunman]

Below 

[potatogunman]

Was meant to be up in London to see the Steorn Demo this weekend, but due to the demo being cancelled and a stinking cold I thought I would crack on with the new Center magnet and Axle.

I have lathed down a 6mm brass Rod to be the Axle and now used two 45mm *4mm thick Neo magnets.

Have milled out a custom holder that now allows the rod to go all the way through.

The balance is brilliant and with a little twist of the Axle she spins up very loose inside the 200 ohm coil.

Will now go wire her up and see what gives.









Cheers

Sean.

Incredible !!   I like the magnet holder idea!!  very nice!!     I've noticed you used a pair of Neo megnets rather then the normal cerramic magnets....do you think that could contribute to its  really fast rotation?     I am  also considering on use neo magnets on my first newman project.   

I never thought that brass was conductive ...i learn new things everyday   

[CLaNZeR]

Thought this might be of interest.

I put both coils on the same shaft and joined them in Parallel.

12.67 volts constant for over 2 hours so far no increase, no drop.

39ohm coil on the left 200ohm coil on the right.

Video attached.

[hartiberlin]

Sean,
great setup,

would be interesting to see,
how much current it will draw now and if you put the
2 coils in series ?
Will it have the same torque as if you put the 2 coils in series ?

Also another ideo would be to pulse one coil as the motor
and the second as a generator and try to run buth from a charged
capacitor.
For better charging via BackEMF the generator coil must be also pulsed
via a commutator to a graetz bridge and then to the cap.
Then the cap charge goes again via a commutator to the motor coil.

Maybe you get it this way to selfrun.
The generator coil should have more windings than
the motor coil.

Regards, Stefan.

[maxc]

Hi all,

I spent the whole day trying to center the new commutator on the shaft but failed. I'll get it done tomorrow.
  The other commutator had to much run out and the segments were not evenly spaced.
But even with it off. At one time when i was adjusting it the battery voltage went up .2 in 5 minutes.
I have more wire about 120 ohms to rap on it.  I have at least 10 days of work left on it.