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Author Topic: Newman machine replica  (Read 137599 times)

potatogunman

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Re: Newman machine replica
« Reply #120 on: July 06, 2007, 06:06:44 PM »
I added 4 diode's to the drawing..... would diode 2,3 & 4 be nessisarry or would
Diode 1 be enough?

potatogunman

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Re: Newman machine replica
« Reply #121 on: July 07, 2007, 02:18:07 AM »
I was thinking of using two   4" dia x 1" thick Neodymium magnets.
instead of using ceramic magnet  because the pulling force is much much greater!! ;D
my question is would a Neodymium magnet produce more output energy then a ceramic magnet?  .....would it spin faster? ;D    hehe

TheOne

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Re: Newman machine replica
« Reply #122 on: July 07, 2007, 02:32:59 AM »
something I am sure is it will cost more :)

maxc

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Re: Newman machine replica
« Reply #123 on: July 07, 2007, 03:34:07 AM »
Hi all,
Just lost long post. >:(

Here's pic of new commutator.

potatogunman

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Re: Newman machine replica
« Reply #124 on: July 07, 2007, 04:19:08 AM »
something I am sure is it will cost more :)

somtimes we must pay to play ;D      hehe

hartiberlin

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Re: Newman machine replica
« Reply #125 on: July 07, 2007, 05:58:58 AM »
Hi all,
Just lost long post. >:(

Sorry to hear this !
Please use Firefox browser as it stores the input field text of the form,
so when you click forward or backwards buttons you willnot have lost the text.
Also a good idea is to first write a longer text in a text editor and
then copy and paste (STRG and C    and   STRG and V ) it into the input
posting text field.

Quote
Here's pic of new commutator.

Very nice, looking forward for a new video.
Many thanks.

hartiberlin

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Re: Newman machine replica
« Reply #126 on: July 07, 2007, 06:02:08 AM »
I added 4 diodes to the drawing..... would diode 2,3 & 4 be neccessarry or would
Diode 1 be enough?

Just only D1 is needed, no more diodes.

You might check then in the circuit the polarity of D1 ,
if you turn it around by 180 degrees, if it will work better then...

Please let us know.

Many thanks.

potatogunman

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Re: Newman machine replica
« Reply #127 on: July 07, 2007, 05:09:30 PM »
og right!!!  the diode is  backwards  hehe.... 
what would be  good to use as a load?   

CLaNZeR

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Re: Newman machine replica
« Reply #128 on: July 07, 2007, 08:07:37 PM »
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.

(http://www.overunity.org.uk/Newmiddle1.jpg)

(http://www.overunity.org.uk/Newmiddle2.jpg)

(http://www.overunity.org.uk/Newmiddle3.jpg)

(http://www.overunity.org.uk/Newmiddle4.jpg)

Cheers

Sean.


CLaNZeR

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Re: Newman machine replica
« Reply #129 on: July 07, 2007, 08:49:21 PM »
Well the new Middle Axle has made a BIG difference.

The Amp meter goes in 10ma increments and it is not even moving as shown in the Video attached.

The Volt meter started off showing 12.76 volts and after 10 minutes of running I decided to Video it as it was hovering between 12.78-12.79 Volts.

Just checked as I was posting and it is still hovering between this range.

Now gonna try work out how to use the amp meter on the Analogue Meter LOL

Now trying to find a 12V light bulb LOL

Cheers

Sean.
« Last Edit: July 07, 2007, 09:19:42 PM by CLaNZeR »

TheOne

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Re: Newman machine replica
« Reply #130 on: July 07, 2007, 08:58:02 PM »
nice replication!

hartiberlin

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Re: Newman machine replica
« Reply #131 on: July 08, 2007, 02:39:53 AM »
Hi Sean,
very well done.
Good video quality !
Please for a better recharge effect of the battery,
shortout the ampmeter , when you are done with measureing
and it might help to use thicker and shorter cables.

Your motor seems to run only on less than 5 milliAmps..
Maybe you have a better scale ampmeter, so we can really see the input power ?

Yes, try now to get a 1 to 3 Watts bulb and put it into series with the battery and shortout
the ampmeter.
Probably at this low input current you also have a very low RF output, so it maybe needs to go to
higher input voltages to see the bulb getting light up.
But it seems you have quite some nice torque already at the rotor axis, right ?


Many thanks.

Eddy Currentz

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Re: Newman machine replica
« Reply #132 on: July 08, 2007, 02:55:57 AM »
Here?s a motor I put together in the last few days. I originally put in on a lead acid battery and the voltage didn?t change a bit. Then I stuck a 9V on it and it has been running for over 8 hours now. The voltage is down about a volt but not bad for a motor of this size.

(http://img265.imageshack.us/img265/6895/newman1yd3.jpg)

I used almost 3000? of 20ga wire for the coil. I had a big old donut magnet kicking around so I used that for the rotor. The frame is from a cable spool and I used some 3/8? bearings and mounted them in two blocks of wood.
This motor is a kick! I?ve built about 5 Bedini motors but this one is so simple that it?s cool.

Here?s the magnet. It fits pretty snug but turns without any rubbing.

(http://img489.imageshack.us/img489/7082/newman2tc6.jpg)

I made a short video of it and posted it here:

http://www.youtube.com/watch?v=K7C4V6WXvkM


hartiberlin

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Re: Newman machine replica
« Reply #133 on: July 08, 2007, 03:12:52 AM »
@Eddy Currentz
well done !

Now if you go substitute the microswitch
with some better commutator contact points, which
will spark more, then you would get a better recharge effect
into the battery.
Is this a rechargeable NiMh 9 Volt battery ?

You might also want to put 2 x 9 Volts or up to 10 x 9 Volts batteries in series
for higher speeds and use an additional 1 to 5 Watts incandescent
bulb in series to see, if you can light it up from the generated RF
power at the commutator.

Eddy Currentz

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Re: Newman machine replica
« Reply #134 on: July 08, 2007, 04:35:03 AM »
@Eddy Currentz
well done !
Thanks. It's not the highest quality construction, I just cobbed it together at work with what I had.

Quote
Now if you go substitute the microswitch
with some better commutator contact points, which
will spark more, then you would get a better recharge effect
into the battery.
Is this a rechargeable NiMh 9 Volt battery ?
No, it's a regular alkaline battery. But I have seen today that the term "rechargeable" can certainly be applied to normally nonrechargeable batteries with this motor.
Commutators are a trade off. You can get great sparking with a couple of wires slapping a buss bar, but the copper oxide and carbon will quickly build up and ruin the effect without regular cleaning. A microswitch will last much longer and does produce some arcing across the contacts. It's hard to get good consistent arcing without degradation to the contacts. I have a carbon brush commutator that I used on another motor that I may try.

Quote
You might also want to put 2 x 9 Volts or up to 10 x 9 Volts batteries in series
for higher speeds and use an additional 1 to 5 Watts incandescent
bulb in series to see, if you can light it up from the generated RF
power at the commutator.
Thanks, I will definitely try what you suggest here. First I want to rebuild the rotor since it has a lot of drag on it right now. I'm going to remount the magnet and straighten out the axels. I also want to mess around with the timing since I only took a couple of minutes to get this going this morning.
These motors are great fun.   ;D

Ted