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Author Topic: Newman motor #2 by detrix42  (Read 21295 times)

detrix42

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Newman motor #2 by detrix42
« on: February 22, 2010, 06:08:44 PM »
Hello every one.  I am excited to announce that my second motor, with 26 awg wire, and a slightly modified commutator is working perfectly.  No over unity because I am using such a thin gauge wire. but I believe this motor to be very very efficient.  And yes I have a video:

http://www.youtube.com/watch?v=fdw3DAVuLbA

I believe I am getting over 2000rpm.  I will get an amp meter, and a tachometer soon.

While the video was uploading I ran an off video test.  The test ran for only 50min because it killed a battery. Only one battery got hot, and the machine slowed way down. I replaced the bad battery, and even added one more and it started up with out a problem. 

I am so excited to have a working motor. Thanks to every one who offered advice.
I hope you liked the video.
Cheers.

detrix42

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Re: Newman motor #2 by detrix42
« Reply #1 on: February 22, 2010, 07:38:46 PM »
I am going to ramble a bit here. Because I don't have an analog amp meter right now, I want to try to calculate some numbers.  Please let me know if I have done something incorrectly.

With my current commutator, there is 6 pulses per revolution.
I think I am getting at least 2000rmp's.  This is 12,000 pulses per minute.
12,000 / 60sec is then 200Hz.
200Hz then means, each pulse is .005 seconds or 5mSec.

would the current be 1/200th of total non-pulsed current???
if it is then with 150v/57ohms of non-pulsed current is 2.63A.
1/200th of that is 13.16mA. 
Would this mean I am using 1.97 watts of power???

I believe I read that 9V batteries have 625mAh (milli-amp-hours)
Does this mean my current set-up could/would run for 47 hours??? That is if I don't kill a battery during that time. ;)

if this is true, this is not bad at all. Again let me know if I have my math right or wrong.
Cheers.
« Last Edit: February 23, 2010, 05:00:04 AM by detrix42 »

detrix42

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Re: Newman motor #2 by detrix42
« Reply #2 on: February 23, 2010, 05:03:11 AM »
I tried to run another 1 hour run.  Before the hour is up, one of the batteries started getting hot, and the motor slowed down.  I believe I am doing things right if I am killing batteries. ;D

So now I need a source that can handle the back spike. or figure out how to capture it.

detrix42

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Re: Newman motor #2 by detrix42
« Reply #3 on: February 23, 2010, 07:17:49 PM »
quick update:  I made a 3min video, technically from a different angle, and I wanted a video that got quicker to seeing the motor running, and not have to wait 5 minutes.

http://www.youtube.com/watch?v=F6qLiAeyPng

If you have any questions, please ask.

detrix42

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Re: Newman motor #2 by detrix42
« Reply #4 on: February 28, 2010, 05:45:43 AM »
Hello everyone.  sorry that its taking so long since my last post.  But I have finally acquired an analog meter to measure the mA.  It has been along time since I have had to use an analog meter. But I did measure 80 to 95mA.  The voltage while running was 115v.  Batteries are very depleted. Motor only runs for 30 seconds, and then begins to slow down due to lack of current. but currently this means my motor is using 9.2 to 10.925 watts.  This will be greater with fresh batteries. 

I am working on a new commutator. Being made out of a small bicycle wheel rim (no tire on it). 

detrix42

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Re: Newman motor #2 by detrix42
« Reply #5 on: March 01, 2010, 05:16:31 PM »
Ok, I will do my best to document the construction of my next commutator including pictures.  I missed a couple of opportunities to take some picture at the very beginning, but I am not to far into, just like 3 steps into it.  Pictures speak better than words...

jadaro2600

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Re: Newman motor #2 by detrix42
« Reply #6 on: March 01, 2010, 07:31:30 PM »
I've found placing a suitable capacitor across the leads of the ammeter will provide more accurate results.

detrix42

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Re: Newman motor #2 by detrix42
« Reply #7 on: March 02, 2010, 03:08:04 PM »
My second Newman motor has been completely disassembled, to make room for motor #3.  I will continued to post my progress of building motor #3 in this thread, but when I am finished (which may be a while), I will start a new thread.

But motor #2 is now no longer available.  ;)

detrix42

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Re: Newman motor #2 by detrix42
« Reply #8 on: March 05, 2010, 03:07:49 AM »
Hello everyone.  Here is a small update, so you all know that I am hard at work building my next motor.  Below are some pics of me building a really big commutator out of a child's bicycle wheel rim. 

Pic #1: my setup for soldering the wires to the copper segments.
Pic #2: my soldering skills  ;)
Pic #3: 20 segments ready to go on the commutator

detrix42

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Re: Newman motor #2 by detrix42
« Reply #9 on: March 05, 2010, 03:57:04 AM »
More pics of my commutator being built.

Pic #4: Putting copper segments on wheel.  Using a spacer piece for exact placement
Pic #5: Showing spacer piece removed.
Pic #6: Done puttting copper segments on.  Worked out exactly as planned with the spacer piece.

I will be adding short-out segments tomorrow, plus other stuff.

detrix42

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Re: Newman motor #2 by detrix42
« Reply #10 on: March 05, 2010, 08:36:06 PM »
Here is what have done so far today  Friday March 5th 2009:

Pic #1: I don't know the actual name for the disks, so I will call them the power couplings since that is where power is connected or contacting.

Pic #2: Copper superglued to the power couplings
Pic #3: Showing gap that needs to be soldered
Pic #4: Showing my soldering skills  ;)   Just a little bit is needed.
Pic #5: Power couplings superglued to the wheel's hub.

And the adventure continues...

detrix42

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Re: Newman motor #2 by detrix42
« Reply #11 on: March 06, 2010, 06:35:30 PM »
Progress update:

See the wonderful pictures.  :D

More picture to come later tonight

detrix42

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Re: Newman motor #2 by detrix42
« Reply #12 on: March 07, 2010, 04:56:46 AM »
Ok, more pics for you all.  Did not get much more done. Did not get much time to work on it today.  Tomorrow I will spend much more time.

Enjoy the Pics, I hope they help someone....I can hope.

detrix42

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Re: Newman motor #2 by detrix42
« Reply #13 on: March 07, 2010, 10:39:00 PM »
Progress update:

3rd picture has some important information in it.

Am I providing enough info?

detrix42

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Re: Newman motor #2 by detrix42
« Reply #14 on: March 10, 2010, 03:52:18 AM »
Quick update.  Only one picture of my "frame" for the next winding.  Currently planning on one pound of 30 awg wire on each side.