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What if Both Stator and Rotor Are Permanent Magnets in a Motor—Will It Rotate?

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  • #1 21668972
    Siva Kumar
    Anonymous  
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  • #2 21668973
    Steve Spence
    Anonymous  
  • #3 21668974
    Rohit Dubla
    Anonymous  
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  • #4 21668975
    stephen Van Buskirk
    Anonymous  
  • #5 21668976
    Peter Evenhuis
    Anonymous  
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  • #6 21668977
    Steve Spence
    Anonymous  
  • #7 21668978
    Mark Harrington
    Anonymous  
  • #8 21668979
    Mark Harrington
    Anonymous  
  • #9 21668980
    Steve Spence
    Anonymous  
  • #10 21668981
    Steve Spence
    Anonymous  
  • #11 21668982
    Mark Harrington
    Anonymous  
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  • #12 21668983
    Donald Dahl
    Anonymous  
  • #13 21668984
    Mark Harrington
    Anonymous  
  • #14 21668985
    Donald Dahl
    Anonymous  
  • #15 21668986
    Mark Harrington
    Anonymous  
  • #16 21668987
    Donald Dahl
    Anonymous  

Topic summary

✨ The discussion addresses the feasibility of a motor with both stator and rotor composed solely of permanent magnets, without an external power source or prime mover. It is clarified that magnets alone cannot provide continuous mechanical energy; an external energy input is necessary to sustain rotation. Without switching or moving magnetic fields, the rotor would align with the stator magnets and stop, preventing continuous motion. Attempts to create such motors often fall into the category of perpetual motion claims, which violate fundamental physical laws including conservation of energy and are considered impossible by mainstream physics. References to John Bedini's circuits and monopole motors are mentioned, but these are widely regarded as pseudoscience or scams lacking scientific validation. The consensus emphasizes the necessity of energy input and magnetic field switching in motor operation, dismissing the concept of a self-sustaining magnet-only motor as unfeasible under known physics.
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FAQ

TL;DR: Fact: 0 watts of continuous power come from fixed magnets alone; "magnets are not a source of power." [Elektroda, Steve Spence, post #21668973]

Why it matters: This FAQ helps hobbyists avoid dead-end builds and understand why magnet-only motors stall, saving time and money.

Quick Facts

Will a motor with both stator and rotor as permanent magnets rotate on its own?

No. With only fixed magnets, the rotor turns until poles reach the lowest‑energy alignment, then it locks. Continuous rotation needs a changing field. [Elektroda, stephen Van Buskirk, post #21668975]

If I arrange the magnets cleverly, can I get perpetual rotation?

No. Without time‑varying fields, torque goes to zero at equilibrium. You still face friction and drag that drain motion over time. [Elektroda, Donald Dahl, post #21668983]

What exactly makes the rotor stop in a magnet‑only setup?

At some angle, attraction/repulsion balance so net torque is zero. The rotor settles there and stays locked unless the field is switched. [Elektroda, stephen Van Buskirk, post #21668975]

What happens when I try to extract power from a magnet‑only spinner?

Load it and it stops. "As soon as you try to extract work, the unit stops." The output cannot exceed the missing input. [Elektroda, Steve Spence, post #21668977]

What is a perpetual motion machine in this context?

It’s a device that runs forever and/or outputs energy without input. Physics treats this as impossible for working machines. [Elektroda, Donald Dahl, post #21668987]

Are YouTube magnet-motor videos good evidence?

No. Internet videos aren’t scientific proof. Serious results appear in peer‑reviewed journals with reproducible measurements and methods. [Elektroda, Donald Dahl, post #21668987]

Is the Bedini or similar "free‑energy" motor legitimate?

Treat it skeptically. Experienced builders call those sites hoaxes and warn readers to protect their wallets. [Elektroda, Steve Spence, post #21668980]

I still want to experiment. What should I expect and measure?

Expect zero net energy gain. Losses are always greater than 0%, so motion decays without input. Measure spin‑down time and load effects. [Elektroda, Donald Dahl, post #21668983]

Quick How‑To: Demonstrate why switching is required.

  1. Mount a rotor with permanent magnets and a magnetic stator.
  2. Spin it by hand and mark where it stops repeatedly.
  3. Introduce a coil you can energize to switch fields; observe continuous rotation only with switching. [Elektroda, stephen Van Buskirk, post #21668975]

Who says magnets aren’t a power source, and why quote them?

Experienced forum moderators and builders state it plainly: "magnets are not a source of power." They reflect standard physics teaching. [Elektroda, Steve Spence, post #21668973]

Does putting the device in vacuum solve the problem?

No. Even without air drag, you still need time‑varying fields for torque. Dissipative effects and equilibrium still stop it. [Elektroda, Donald Dahl, post #21668983]

Why do some people believe these motors work?

Novelty bias, selective videos, and misunderstanding of physics fuel belief. Open minds help, but laws of nature still apply. [Elektroda, Rohit Dubla, post #21668974]

What’s a safer way to evaluate extraordinary motor claims?

Look for independent replications, load tests, and publication in recognized journals. Be wary of sales pitches and evasive data. [Elektroda, Donald Dahl, post #21668987]

Will stronger neodymium magnets change the outcome?

Stronger magnets increase forces but not the physics. Without commutation or a changing field, the rotor still finds equilibrium and stops. [Elektroda, stephen Van Buskirk, post #21668975]
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