help with my Newman machine

[potatogunman]

would'nt   electro manget   consume more energy.......  i   would try Neo magnet  they are stronger....but more expensive

[hartiberlin]

Electromagnets are not so good,cause they need additional power
and the modern Neodym magnets are cheap and powerful enough.

The magnet fields of the coil(s) are too weak to affect the fields
of the magnets so they will last very long !

Also if you design the commutator right,so that it does work on attraction
rather than an repellation the magnets will last forever.


You can run such a coil-magnet combination more as an electrical  generator or
more as a motor.
It depends on the phase angle, when you switch on the coil to the battery versus
the magnet position angle inside the coil.

If you put this phase angle this way, that you connect the battery to the coil
when the magnet induces higher positive voltage  than the battery voltage,
then if you make contact again at this point this higher positive voltage will
recharge the battery.

Also when the coil switches off and the BACK EMF induction voltage occurs
and the spark jumps, the rotating magnet helps to induce even a stronger
and higher voltage then due to its inertia, so the BACK EMF voltage will
stay longer on and this will produce a more powerful spark.

So all in all, this phase angle from magnet postion inside coil
versus commutator firing timing
is important to tune the machine for maxium torque
or for maximum Electrical output via BackEMF pulses.

So you have to decide, if you go for maximum torque
to propell a mechanical load or go for
maximum BackEMF pulses, that recharge your batteries.

I would suggest trying better to go for
maximum BackEMF pulses, where the magnet rotates slower
and the motor has lower torque.

This way you can light up an incandescent bulb put in series
with the batteries before going to the commutator and coil
via the BACKEMF pulses.

[hartiberlin]

The difference between a Newman motor/generator and a normal DC motor is:

In a normal DC motor the counter EMF induction voltage from the
moving magnet rotor  inside a coil stator is always smaller than the supplied
battery voltage.

In a Newman motor due to the high turn number coil and the use of
Back EMF voltage pulses, these pulse voltages are always much higher
than the battery voltage and thus it will recharge the battery.

The more pulses you have per revolution, the better it is.
So you can design the commutator also this way, that it
makes contact several time per revolution.

[naby]

hm it appears i did not understand you correctly the first time

so i actually get energy fed back to the battery only on 2 occasions, during the sparking when i connect and disconnect the battery with the coil at the start and the end of 30 degree part? And during the 330 degree part no sparking is present?

can you give me some examples of angles where machine produces more torque and some examples of angles with more battery charging?

if the machine has more torque, isn't the faster spinning going to produce more voltage in the coil and recharge the battery better?

1 more question

if magnet generates more electricity from turning then it requires for him to turn why isn't the battery connected all the time?
When magnet field of the magnet causes more voltage then the battery,it should recharge the battery, when the magnet turns at such an angle so that it causes less voltage then the battery voltage , the battery should power the magnet and turn it, and overall output should be greater then 100%?

[Jason]

The more pulses you have per revolution, the better it is.
So you can design the commutator also this way, that it
makes contact several time per revolution.

So what you are saying Stefan is that you can have more pulses yet still be in the 30% pulse range? Or are you saying forget the 30% and pulsate more frequently?

I am going to try and build a generator to power my house with this Newman design. I live very simple so I do not have to have mass quantities of power. I thought that I could put a meter on the wall and when the power in the batteries are getting low, hit the switch to recharge. I see a few people downing this design but so far this is the only one that is simple enough for me to tackle. If I can get enough rpm and torque to power a generator from this design, what else do I need? My only concern is finding some big magnets and maintaining magnetization. Thanks, Jason