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Bedini motor why stress can only use ceramic magnets?

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  • sunboy
    replied
    Window motor, the stronger the magnetic properties of the higher efficiency

    Window motor select the neodymium magnet efficiency will be higher, but the stronger the higher the efficiency of magnetic!

    Leave a comment:


  • tecknomancer
    replied
    PM-Alternator

    Originally posted by jibbguy View Post
    Actually the existence of a shaft Commutator is the technical difference between an Alternator and a Generator (although the other common usage of the word "generator" as any rotating device that produces current ignores this).

    There certainly are PM Alternators.. generally more expensive that "field" ones, fitted as after-market on boats and cars, usually for higher current output (and they are more efficient, especially for slower RPM applications like wind turbines since they don't need field current).

    Permanent Magnet Alternators PMA wind power wind turbines wind mills PMG Permanent Magnet generators PMA wind power turbine hydro power wind turbine

    Fossil Freedom - Permanent Magnet Alternator

    Outboard motor PM-Alternator built into the flywheel (which has an interesting design with all mags facing the same pole direction, and the coils in series but wound alternately "CW" and "CCW").

    continuousWave: Whaler: Reference: Permanent Magnet Alternators
    thanks for the links I stand corrected

    Leave a comment:


  • jibbguy
    replied
    Actually the existence of a shaft Commutator is the technical difference between an Alternator and a Generator (although the other common usage of the word "generator" as any rotating device that produces current ignores this).

    There certainly are PM Alternators.. generally more expensive that "field" ones, fitted as after-market on boats and cars, usually for higher current output (and they are more efficient, especially for slower RPM applications like wind turbines since they don't need field current).

    Permanent Magnet Alternators PMA wind power wind turbines wind mills PMG Permanent Magnet generators PMA wind power turbine hydro power wind turbine

    Fossil Freedom - Permanent Magnet Alternator

    Outboard motor PM-Alternator built into the flywheel (which has an interesting design with all mags facing the same pole direction, and the coils in series but wound alternately "CW" and "CCW").

    continuousWave: Whaler: Reference: Permanent Magnet Alternators

    Leave a comment:


  • tecknomancer
    replied
    year of the electron

    Technomancer, haven't you heard? Bedini motors don't have torque
    YouTube - Bedini Motors Have NO Torque!
    I will have some new vids soon, the VMG is now spinning 16lbs of flywheel 16 mags and a converted alternator with 12 neos magnets and 1 1/8 " cores I have used both coat hangers and welding rods both work fine I hope this will be a big year for FE


    sorry permanent magnets make it a generator not a alternator
    Last edited by tecknomancer; 02-10-2010, 09:49 PM.

    Leave a comment:


  • Sephiroth
    replied
    Originally posted by tecknomancer View Post
    neodymium's work perfect if you space the coils far enough apart I switched to neodymium's 2 years ago and had no issues with them the VMG project is neos and its the only way I have found to get enough torque to make a motor and not just a energizer but I only use 24 chips on my motor Mr Bedini uses alot more chips on his energizer, ZPF motors all about the torque both solutions are valid and should be studied to gain a better understanding of pulse motors/energizers
    Technomancer, haven't you heard? Bedini motors don't have torque
    YouTube - Bedini Motors Have NO Torque!

    (yes it uses neos as well but with air core)

    Leave a comment:


  • tecknomancer
    replied
    neos work perfectly

    neodymium's work perfect if you space the coils far enough apart I switched to neodymium's 2 years ago and had no issues with them the VMG project is neos and its the only way I have found to get enough torque to make a motor and not just a energizer but I only use 24 chips on my motor Mr Bedini uses alot more chips on his energizer, ZPF motors all about the torque both solutions are valid and should be studied to gain a better understanding of pulse motors/energizers

    Leave a comment:


  • stonewater
    replied
    yes it is,

    Originally posted by Matthew Jones View Post
    Iron core with Neo's. John Bedini's of course but...
    YouTube - baja 22 063.avi

    Half bipolar switch, Hall sensor and timing wheel driven.

    Matt
    but it is not a simple SG circuit it is a window motor circuit

    Leave a comment:


  • ray0energy
    replied
    Originally posted by darkwizard View Post
    Neodymiun Magnets work very well on the SG with air core coil
    same here i always use neomagnets on all of my motor projects.
    whit air core. but i find ferrit core work the best like Bill Muller.
    becous de swhits faster than metal
    i use reed, coil, and optic trigger and the last work the best

    Leave a comment:


  • Matthew Jones
    replied
    Iron core with Neo's. John Bedini's of course but...
    YouTube - baja 22 063.avi

    Half bipolar switch, Hall sensor and timing wheel driven.

    Matt

    Leave a comment:


  • stonewater
    replied
    I agree

    Originally posted by darkwizard View Post
    Neodymiun Magnets work very well on the SG with air core coil
    because there is no core to saturate, just like a window motor, so the repulsion needed is much less. window motors can run on 4 milliamps

    Tom C

    Leave a comment:


  • darkwizard
    replied
    Neodymiun Magnets work very well on the SG with air core coil

    Leave a comment:


  • stonewater
    replied
    why ceramics

    simple answer on the SG it is just a trigger that is all. the AG is not a torque motor. you just want to be able to switch the tranny and allow as much of a push with as little current needed when the pole flips.

    window motors are a different story altogether.

    Tom C

    Leave a comment:


  • dambit
    replied
    Originally posted by yx630514 View Post
    磁铁有太多的秘密,,,,,
    Sorry didn't get that, my mandarin translator is on vacation.

    Something about magnets and how there is a lot about them we don't know.

    It's been a while since I've had to read mandarin so I could be wrong.

    Cheers,

    Steve

    Leave a comment:


  • yx630514
    replied
    佩服楼上的

    磁铁有太多的秘密,,,,,

    Leave a comment:


  • Matthew Jones
    replied
    Originally posted by theremart View Post
    Thanks for the input Matt,

    So when you have these "side by side" what is the spacing, and what is the size of your neos, as grade and physical size?

    I have Howard John's book on magnets, but sounds like you have a working knowledge of what it means from watching your videos.

    Mart
    Like I said a bunch of smaller strong neo's work good. I generally use something like a 40 lbs 1/2 cube (Because I have bunch) or something close that in a cylinder. I keep them about 50% of there own width apart for this application.
    I did not get that from Howard Johnson's stuff. I actually got it from Energy from the vacuum. A section about skin effects. Bedini's mostly.
    Once I read it It got me thinking and subsequently, trying. It a valid method for lowering the force that iron and magnets have against each other.

    It will never completely stop the lock. If it did we would not saturate the iron. But it helps alot. Simulators do not take the skin effect into consideration but they do give some signs.

    Vizimag Simulation

    You can also use this same effect for generating energy. A saturated core (Explained above) and magnets close together can produce a near perfect sign wave. Yet everything in the negative of the sign wave is produced freely with out the need for torque. The only work needs to be done is when a magnet is in position over the core of the coil.

    Simulation2

    Notice the density of the flux between the magnets, and its direction.

    Like I said take it for what its worth.

    I wouldn't use neo's with and SSG for some of the reasons Ted laid out, but thats not the only thing out there either. So saying they are bad in general for motors is just not the truth. And I had to point that out. Alot of misconceptions and no real research.

    Cheers
    Matt

    Leave a comment:

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