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Thread: Zero Force Motor Replication Project

  1. #231
    Senior Member John_Koorn's Avatar
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    Quote Originally Posted by Davy Oneness View Post
    Thanks for your reply Aaron.

    "Approval isn't required for any member to post.
    I simply gave you my opinion on the notes as a reply to your post."

    That has been my experience in the past, but yesterday it flashed on screen "waiting to be approved by moderator" and I still don't see it listed anywhere on the main bedini forum thread list, so if you have replied, can you please share a link for me here so I can find it?
    Hi Davy, I can see them here: http://www.energyscienceforum.com/sh...7097#post27097

    John K.

  2. #232
    John K, when I click it, I get :
    "Invalid Thread specified. If you followed a valid link, please notify the administrator"

  3. #233
    Senior Member John_Koorn's Avatar
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    Quote Originally Posted by Davy Oneness View Post
    John K, when I click it, I get :
    "Invalid Thread specified. If you followed a valid link, please notify the administrator"
    Davy, try this one: http://www.energyscienceforum.com/showthread.php?t=3863

    John K.

  4. #234
    Quote Originally Posted by John_Koorn View Post
    Hi John,

    This new link you kindly included does not work either. I get the same error message Davy quoted above, cannot see Davy's posts in question.

    thanks for trying to help.

    Gyula

  5. #235
    Networking Architect Aaron Murakami's Avatar
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    Quote Originally Posted by Davy Oneness View Post
    Thanks for your reply Aaron.

    "Approval isn't required for any member to post.
    I simply gave you my opinion on the notes as a reply to your post."

    That has been my experience in the past, but yesterday it flashed on screen "waiting to be approved by moderator" and I still don't see it listed anywhere on the main bedini forum thread list, so if you have replied, can you please share a link for me here so I can find it?

    When I replied, it looked like a regular post that everyone could see. That was the whole reason I replied to it.

    I found that in front, it did say moderated, so I approved it.

    I have no idea why once in a blue moon a post will require moderation - might be the quantity of images or something.
    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

  6. #236
    Networking Architect Aaron Murakami's Avatar
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    Quote Originally Posted by John_Koorn View Post
    Hi Davy, I can see them here: http://www.energyscienceforum.com/sh...7097#post27097

    John K.
    I think because you have moderator status. That is how it came up for me and did not notice that it was flagged for moderation somehow.
    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

  7. #237
    Senior Member John_Koorn's Avatar
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    I went in and approved Aaron's post as well. Not sure why it was moderated either but hopefully everyone can see the thread/posts now.

    John K.

  8. #238
    Quote Originally Posted by John_Koorn View Post
    I went in and approved Aaron's post as well. Not sure why it was moderated either but hopefully everyone can see the thread/posts now.

    John K.
    Thanks for straightening it out. I bet the system flagged it because I posted pictures from a link instead of uploading to this system. Probably part of a porn spam filter on this site, I'm guessing...

  9. #239
    Senior Member James McDonald's Avatar
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    Quote Originally Posted by Richard View Post
    "To date there has been only two Zero Force Motor builds acknowledged as good replications of the Bedini Zero Force Motor. Please provide the links to these videos."

    Hi James. My mistake, I only found one video of a brake test on a ZFM by DadHav on youtube.
    DIY Dynamometer (Prony Brake)
    This test indicated 56% efficiency on his ZFM.
    The other brake test I found by Peter Lindemann was on a conventional electric motor, not a ZFM.
    And although 56% is a poor showing, I am well aware that every motor has a sweet spot for efficiency depending on load, rpm and other factors so 56% under one set of conditions does not mean it can't go overunity under different conditions. At these power levels I believe the hydraulic bicycle disk brake would allow good testing duration (water spray or tray on disk may be required), controllability and readability (a single gage to read with no calculations for torque results by using a fish scale or a table scale). Putting a test run on video would eliminate the need to keep your eyes jumping back and forth and frantically writing notes as you change loading, you just freeze the video later as you note all readings (amps, volts, pounds, rpm) at each step when you change loading. I would mount the brake caliper on a lever arm with one end connected to the motor shaft with a bearing and the other end preferably one foot long with a contact point resting on the table scale. I have a Polder scale (I may have bought at Costco) 3/4" x 8" x 8" with a limit of 5kg/11pound and 1g/0.1 ounce resolution.
    Hi Richard --

    I just finished doing the new magnet test today. The results were positive. My torque was tripled from the original magnets I had on my ZFM and my ZFM speed increased by 1/3. The torque now is equal to or a little bit stronger then the Peter L. build. The original magnet size was N52 3/4 inch round by 1/2 inch tall. These were changed to N52 2 inch by 1 inch by 1/2 inch. The magnets were not glued at the time and they came off once the ZFM reached 9500 RPM running on +24 volts. Two magnets were destroyed in this test. The next test they will be glued. I expect to see higher RPM's with the next test. Good thing I bought two extra magnets. Another positive result from this test is my build stopped vibrating and now runs smooth. The biggest thing learned from this test is don't buy your magnets till you finish winding your coil. The magnet has to be at least the width of your finished coil so that the magnets's magnetic field cuts through all the magnet wire on your coil. My coil was very different from the original Peter L. build in that it has only one wire on each side but it's 18 gauge magnet wire which makes my coil bigger and wider to get the 3 ohm resistance I have on each side.

    I feel a need for speed!!!

    -- James
    Last edited by James McDonald; 07-23-2017 at 03:15 PM.

  10. #240
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    ZFM- more torque

    Quote Originally Posted by James McDonald View Post
    Hi Richard --

    I just finished doing the new magnet test today. The results were positive. My torque was tripled from the original magnets I had on my ZFM and my ZFM speed increased by 1/3. The torque now is equal to or a little bit stronger then the Peter L. build. The original magnet size was N52 3/4 inch round by 1/2 inch tall. These were changed to N52 2 inch by 1 inch by 1/2 inch. The magnets were not glued at the time and they came off once the ZFM reached 9500 RPM running on +24 volts. Two magnets were destroyed in this test. The next test they will be glued. I expect to see higher RPM's with the next test. Good thing I bought two extra magnets. Another positive result from this test is my build stopped vibrating and now runs smooth. The biggest thing learned from this test is don't buy your magnets till you finish winding your coil. The magnet has to be at least the width of your finished coil so that the magnets's magnetic field cuts through all the magnet wire on your coil. My coil was very different from the original Peter L. build in that it has only one wire on each side but it's 18 gauge magnet wire which makes my coil bigger and wider to get the 3 ohm resistance I have on each side.

    I feel a need for speed!!!

    -- James
    That's great, James.
    I can't wait to see a brake test.
    Did you have a chance to see if the current draw went up?

    Richard

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