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Thread: 3D Printed Window Motor

  1. #81
    https://www.youtube.com/watch?v=xcBmaDqj578&t=2s & https://www.youtube.com/watch?v=BOWLWe9HEMw
    I can't imagine that there is any null between these magnets either. Although they are ceramic they are still large, strong, and relatively close together. You can see that they are triggered by smaller diameter magnets using hall switching.

  2. #82
    Senior Member Tom C's Avatar
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    Doug,

    to answer your question yes we are working on both a half bipolar and a full bipolar circuit board kit. we are almost finished with our full Tesla switch kit and this will be next. we tend to do a lot of testing before we ship something.

    I will p.m. you when we have one ready.

    now to the magnetic field lines and magnet /coil interaction. when I built my first window motor it would not rotate at all. I brought it to john, he said my magnets (neo) were too powerful. he said you want the edge of the detectable field in gauss ( not sure how strong) of the pole of the magnet to just touch the outer edge of the window motor coil. and he wanted the filed lines to completely disappear from interacting with the coil where they overlap. this may have to do with electron flow directionally in the open circuit but I do not know. it is how the window motor becomes more efficient. I have not played with them much other than that. for effect he took a screwdriver and slowly worked it closer to the rotor, when the metal started interacting, he said that was where I wanted the back winding edge of the coil.

    with the one I built he said I needed my coils 9 inches from the magnet on either side. considering this was a 4 inch rotor it would have been unmanageable. now its just a 400 dollar scary magnetic rotor that I am not sure what to do with, so it sits in a box away from other things. it pulls screws in from 10 inches away. really bad design on my part, but I was working from ignorance.

    Tom C


    experimental Kits, chargers and solar trackers

  3. #83
    And then we have DadHav's build with the neo's: https://www.youtube.com/watch?v=OMVtGxSYdhU He is running this motor from the Full Sequential Bipolar Circuit with wire triggering on capacitors. I have to be honest, his build was at least in some part inspiration for my small 3d printed design. His magnets appear to be the same size as mine with the same spacing. I'm sure his build is much more precision than mine. He also used all nonmagnetic material to include the shaft (stainless steel) and bearings (ceramic) where I used chrome plated steel. He is even able to run it from a Tesla coil with electrical transmission through the air!! Holy Cow!! https://www.youtube.com/watch?v=lqgjeN3Jnj8&t=518s

    I did the screwdriver trick with mine. It noticeably begins to interact about an inch past the outer diameter of my coil. I can say that at 12V+ I am certain that it has enough torque to replace the DC motor in the 1984 setup running on the Full Sequential Bipolar Circuit.

    Doug

  4. #84

  5. #85
    Quote Originally Posted by DMANN View Post
    Very nice!
    care to elaborate :-) what's running what or charging etc... or are you merely having a good time spinning things :-)

    In kind of a response to what you note is similar to Dadhav's build. Dadhav built according to a video JB had posted of a windowmotor running on Caps. JB never said that build was OU much less U. JB did however mention at one time that the geometry was all wrong if you were looking for OU. He was not referencing Dadhav's build but Rick F's which is very similar if not the same.
    Sincerely,
    Patrick A.

  6. #86
    Thanks Patrick. Just spinning for now. I had to get the parts printed and lined up to get it all linked together. The window motor is running with a two transistor basic Bedini SSG. The bottom is going to have to be reworked to be used as an energizer. The spikes from the window motor coils are only at 80 volts. I would say that it is definitely more of a motor than an energizer with the way it is currently running.

    Rick's Small Window Motor: His magnets are the same length and width but they are a 16th of an inch thick. They are butted directly against one another. He is using a mosfet circuit triggered by a hall switch on souths only. It is neat to see that it spins easily up to 10k + rpms. I think that Gerard Morin is doing something along the same lines but has a high frequency generator linked up to the shaft of a brushless motor.

    I just want to use my window motor as the prime mover in my setup here. I was hoping that I could get better efficiency than an off the shelf dc motor or even Matt's scooter motor. But I am going for the same end result which is something that resembles the 1984 setup.

    Doug Mann
    Last edited by DMANN; 12-02-2017 at 10:04 AM.

  7. #87
    That's really really nice, and a lot of printed parts....

    I cant wait to see this running from a full H bridge Bedini/Cole circuit.... and some of the the genny coils output feeding a big cap that is running the Bedini/Cole circuit.........

  8. #88
    I did this update video for the latest setup. There won't be anything else posted from me till after the first of the year. So have a Merry Christmas and a Happy New Year!

    https://1drv.ms/v/s!Apbifed6cvBmauMlNWM8JmgT4Xg

    Doug Mann

  9. #89
    Senior Member Tom C's Avatar
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    Doug,

    I am sure a bunch of us would love to see this at the next conference. if you are coming I will give you a spot at the teslagenx booth to display it if you want!!

    Tom C


    experimental Kits, chargers and solar trackers

  10. #90
    Quote Originally Posted by DMANN View Post
    I did this update video for the latest setup. There won't be anything else posted from me till after the first of the year. So have a Merry Christmas and a Happy New Year!

    https://1drv.ms/v/s!Apbifed6cvBmauMlNWM8JmgT4Xg

    Doug Mann
    I'm love'n this build Doug!
    Do you think the rubber bands ran smoother or is that just my perception loss from the video?
    -Patrick

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