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Author Topic: Newman machine replica  (Read 137610 times)

TheOne

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Newman machine replica
« on: June 09, 2007, 12:55:48 AM »
I started the replica of the newman machine like the one from this topic http://www.overunity.com/index.php/topic,2492.0.html

The first 3 photos are front/side/top view of the flower pot, the pot have 2 glued rollerskating bearing on the sides.

The last 2 photos are the wire I will use and the magnet I find in my old microwave.

I am not sure i how will able to put the wire around this but i will hopefully figure out soon!

hartiberlin

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Re: Newman machine replica
« Reply #1 on: June 09, 2007, 02:04:53 AM »
Well done,
maybe you should just have used a more cylindrical plastic container
or something simular. Not so cone like...

Try to stay around 10 to 50 Milliamperes as the average input current,
then your battery will not discharge but will recharge from the RF bursts.
Just only measure  this with analog DC ampmeters. Digital meters
will get confused from the spikes..

If you make the coil too small and the voltage too high, so that it draws
on average more than 100 milliamps then it is not so good and battery
might discharge. Depends on the inductance L of your coil and the switching
frequency what your coil will draw in milliamps.

Make it this way, that it will draw 100 Milliamps if the magnet stand still,
then when it rotates and only makes short contact the average input current
will drop to around 20 milliamps or below,
depending also on the strengthof your magnets and you coil inductance L.

So lets calculate:
If you use a 12 Volt battery:
amps= Voltage / resistance.
so Resistance= Voltage / amps.

So 12 Volts / 0.1 amps= 120 Ohms.

So your coil should have at least 120 Ohms in DC resistance.

If you have lower DC resistance  just reduce the used voltage.
It would be good to at least use 2 to 10 Kgs of copper wire,
cause this matters. More wire makes it more efficient.

Good luck.
Regards, Stefan.

TheOne

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Re: Newman machine replica
« Reply #2 on: June 09, 2007, 04:14:56 AM »
Quote
maybe you should just have used a more cylindrical plastic container
or something simular. Not so cone like.

yeah i know but i did not find any content with the right size also plastic is usually so small its will be hard to put wire around it, all flower pot are cone so he prob use something similar, its hard to see from the video

i dont know how many pound of wire i have but prob more then enough! I dont know if i will put all the wire around of just a part of it, my only problem is how to put the wire :), that will take foreever i guess

I will try to do that tomorrow, i was hoping seeing his part 5 video before starting the wire to make sure i dont do something stupid! he will prob tell more about his device on his next part.

TheOne

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Re: Newman machine replica
« Reply #3 on: June 12, 2007, 05:14:34 PM »
Here the finished version (with wire)

I need to find out how to fix the magnet on this, right now its only for photo purpose you see the magnet inside, also i try to power up with 4 aa batteries and it was working

More stuffs later.

hartiberlin

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Re: Newman machine replica
« Reply #4 on: June 12, 2007, 07:52:56 PM »
Well done,
maybe just take a flat piece of wood,
drill a hole through it and glue the magnets ontop and
onto the bottom of the wood and stick the axis through it and glue
the axis to the wood.That would be probably pretty easy to do.

Good luck.

Regards, Stefan.

TheOne

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Re: Newman machine replica
« Reply #5 on: June 12, 2007, 08:17:02 PM »
Here what i have done

so far the motor seam to use more input then generating output :)

what is the best connection? i mean what is the % of rotation the coil need to be connected with the battery? I try less as possible but i am not sure if its the way to go

TheOne

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Re: Newman machine replica
« Reply #6 on: June 12, 2007, 09:14:41 PM »
here the result with a crappy video from my mobile phone!

IronHead

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Re: Newman machine replica
« Reply #7 on: June 12, 2007, 09:19:36 PM »
Very nice replication so far !

TheOne

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Re: Newman machine replica
« Reply #8 on: June 12, 2007, 09:43:10 PM »
thank you!

this is my first device we can say! :)

Also i made a new video using a real camera, here the link:
http://www.youtube.com/watch?v=sk73ITQxkjE

TheOne

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Re: Newman machine replica
« Reply #9 on: June 13, 2007, 12:06:34 AM »
I changed the connection a little bit, now its turn very slowly and just do a little pulse on a rotation like 10-20% contact max, and now i see the voltage with my multimeter go from 12 to 16 volt!

Before its was lower and the battery did not charge but the engine was turning faster like the last video. Now it turn so slow it's funny to see :)

I will see in few hours if the battery is charged back...

hartiberlin

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Re: Newman machine replica
« Reply #10 on: June 13, 2007, 01:53:50 AM »
Well done,
yes,if you change the Fire angle versus magnet angle and it now
rotates slower you are working now in the generator regime and
not more so much in the motor regime.
So it is running slower but converts more stored magnetic energy from
the coil back to electrical energy via the spark to your battery.

Now it would really be helpfull,
if you could get some graphite and use this as the contact material
versus a copper ring on the axis shaft.
So you could get a better back current spike and even
charge up your battery better.

It all depends on the right commutator materials.

For instance drop some conducting tap water onto your
contact points and you will have totally different back current pulses,
much lower...Just try that for a short test....you will see the difference
of the contact materials. If the contact points are wet, it behaves differently...

TheOne

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Re: Newman machine replica
« Reply #11 on: June 13, 2007, 03:01:58 AM »
ok thanks for your comment

I dont have graphite, i will try to find some this week, also i want to see if my battery will get charged up with what i have


hartiberlin

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Re: Newman machine replica
« Reply #12 on: June 13, 2007, 03:21:53 AM »
You can easily get a graphite rod from an zinc carbon battery D-cell or AA-cell. Make sure it is really a zinc carbon cell you dissassemble and not the currently mostly used alkaline batteries, as these don?t have graphite rods...
Also you could just get a soft pencil, these also have conductive graphite in them mixed with clay, the softer the less clay in it....

jorgerojo

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Re: Newman machine replica
« Reply #13 on: June 13, 2007, 04:57:07 AM »
Hi Guys:
How does the comuttator conexions work? How many cables do I have to wind? how many turns? where do I have to conect the cable coming out from the coil?
Please help!!!
I would like to follow you TheOne
Thank you!!!

TheOne

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Re: Newman machine replica
« Reply #14 on: June 13, 2007, 06:25:31 AM »
so far its quite simple, one wire go on the negative battery and the other is on the shaft, i put some tape on the shaft so the other coil wire touch the metal a little bit per rotation, and one wire touch the shaft with the positive battery

for the amount of turn i dont know myseft lol, but mine is big i think, few pound of wire.

I stopped my motor, i changed something and i screw the voltage, so its not charging but seam to work with very few current. with some of test i was able to go from 11.98 volt to 12.02, but i screw something and after 3 hours the battery goes to 11.96, so i bet i need to put more work on the best arrangement for the communicator (tape on the shaft)