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Thread: Zero Force Motor Replication Project

  1. #311
    Senior Member Yaro1776's Avatar
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    Quote Originally Posted by Aaron Murakami View Post
    Hi Yaro,

    At 1500RPM uncoupled from the Kromrey, it goes 1500 rpm with a dc motor draw of 12.24v at 0.78a = 9.54 watts. This is WITH the flywheel on the back end of the motor. I'd test w/out the flywheel, but can't find the right Allen Wrench at the moment. All three measurements are with the DC motor on the back end of the flywheel.

    Coupled to the Kromrey with nothing on the output of the Kromrey at 1500 rpm, it takes 12.62v at 1.98a = 25 watts.

    Coupled to the Kromrey with the output of the Kromrey shorted at 1500 rpm, it takes 12.5v at 1.75a = 21 watts.

    The DC motor needs up to 15 extra watts to turn the Kromrey at 1500 rpm at whatever efficiency that DC motor is. Even if the flywheel takes 100% of the DC motor draw to turn, we're looking at 25 watts for 1500 rpm but of course will take less than this.

    25 watts = 0.0335 HP to turn it at that speed. I don't know the optimum speed, I can tell you there is nothing linear about the machine. And sometimes, it just spontaneously jumps in speed 10-20% and then slows down. Might be bad brush contacts, etc... it's not in the greatest shape. So anyway, that is just this particular build.

    I want to build a larger Kromrey with a few bells and whistles as time permits. Getting all the parts together right now.
    Okay - that is good info. The present YZFM will produce that at about 7800 RPM, so theoretically a 5:1 ratio belt drive should work to drive the small Kromrey device right now and provide the starting torque to get everything up to speed. Very Interesting...

    Yaro

  2. #312
    Senior Member Yaro1776's Avatar
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    Hello Cristian,

    Nice video of your design - interesting arrangement on the coils that seems to work okay. It appears that you are using around 8.9 watts to drive the motor at 1,700+ RPM. You will find that as you alter the Firing Angle (coil power on time) and the Advance/Retard of the firing point that the machine will change speed and input consumption.

    Maximum speed is not really the goal, though it does raise the level of excitement at times. Goal here is to maximize torque and subsequent horsepower while minimizing power input.

    Good work!!!
    Yaro

  3. #313
    Networking Architect Aaron Murakami's Avatar
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    Quote Originally Posted by Yaro1776 View Post
    Okay - that is good info. The present YZFM will produce that at about 7800 RPM, so theoretically a 5:1 ratio belt drive should work to drive the small Kromrey device right now and provide the starting torque to get everything up to speed. Very Interesting...

    Yaro
    Kromrey might do better at even lower speeds. There is a point where the output volts and amps increase then the current stays the same even with the voltage going up a bit - have to look at the input output ratio to see the point of diminishing returns. The Kromrey acts like a constant current generator and constant current generators are supposed to unload the prime mover when output is shorted. I think that is something nobody ever really got about the Kromrey so it isn't anomalous at all - at least not that specific aspect of its operation.
    Aaron Murakami





    You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete. ― Richard Buckminster Fuller

  4. #314
    Senior Member Yaro1776's Avatar
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    Aaron,

    Sheesh! You are certainly distracting my attention towards the Kromrey device; but I will ignore this siren song for awhile and keep focusing on the ZFM goals for the time being. There is more to be mined from this motor and I am loathe to be distracted away from it as this point.

    Keep priming the pump with the Kromrey info and progress.

    Yaro

  5. #315
    Quote Originally Posted by cristian alba View Post
    Hello everyone
    I think I do not bother this approach on Ron's project and I propose to look at a not unusual way to start up the ZFM, this time with the circuit proposed by Peter Lindeman. This video is uploaded to edit anything with little clarity due to the lack of good light of my work site, but in a very short time I will return with a version with details.
    Ron, your work is very fine, you love and interest at the same time
    Yaro, you are the veteran of this engine. If to this engine, I put an aluminum rotor, with my optosensor ignition system how many revolutions do you think it will achieve if you touched more than eleven thousand?
    OK sorry Mr. chrome that has translated into English but I do not think it is a barrier to communicate when you have to say things.
    Here is the video: https://www.youtube.com/watch?v=0GP8...ature=youtu.be
    Very interesting concept Cristian! thanks for sharing

    Ron

  6. #316
    Senior Member Ed_Morbus's Avatar
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    thanks for sharing Cristian Alba

  7. #317
    Senior Member Faraday88's Avatar
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    Quote Originally Posted by Aaron Murakami View Post
    Kromrey might do better at even lower speeds. There is a point where the output volts and amps increase then the current stays the same even with the voltage going up a bit - have to look at the input output ratio to see the point of diminishing returns. The Kromrey acts like a constant current generator and constant current generators are supposed to unload the prime mover when output is shorted. I think that is something nobody ever really got about the Kromrey so it isn't anomalous at all - at least not that specific aspect of its operation.
    Hey Aaron,
    Perfect!!! On the hind sight the G-Field gets loaded heavily if left OPEN at its terminals... JB shows this in the DVD there are more experiments that i would suggest like it charges a Battery really well when you use the rectifier diode in a particular fashion..and the Capacitor in another way.. MIT scientist realized that it supercharged batteries like never before so they smartly debunked the last few units that JB built for them that never saw the light of the day again !!
    Kromery and G-field are different...JB improvised the kromery design and that the G-field.
    btw Stanley Meyer, EV Gray, have the G-Field generator incorporated in their patent design..
    Rgds,
    Faraday88.
    Last edited by Faraday88; 12-20-2017 at 12:29 AM.
    'Wisdom comes from living out of the knowledge.'

  8. #318
    Quote Originally Posted by cristian alba View Post
    Hello everyone
    Today I present you my new motor concept https://www.youtube.com/watch?v=FmvW...ature=youtu.be
    I need criticism or comments. This is a small deviation from the main theme and the following will be a new engine model with coils in the form of eight. In any case I have seen a real alternative to the usual coils
    Sincerely, Cristian Alba
    Cristian, is that armature just being used to hold the magnets? How many magnets and there polarity? One coil? What does the switching?

    Thanks

    Ron

  9. #319
    Quote Originally Posted by cristian alba View Post
    >>>With the two coils, I do not know. Can you tell me what I'm going to try?<<<

    It is an inadvertence with the translation of Google. sorry
    Not a problem... as long as you are having fun and learning then all is well.

    I will post my version two next...

    Ron

  10. #320
    Here is my version two. I have gone to 12 magnet stations, N S N S.

    I am only pulsing on the north pole over the coil. When I pulse with the north pole entering the face of the coil the south pole is just entering the gap. So I get the two reactions for one pulse.

    Not that much difference really between version one. Now I get 730 RPM on 12 volts but only 250 mA.

    But this one allows me to run at 24 volts in which case I get 1300 rpm at 500 mA, a real improvement.

    Ron

    IMG_7994e.jpg

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