Bedini RPX Sideband Generator

* NEW * BEDINI RPX BOOK & DVD SET: BEDINI RPX


2019 ESTC ALL SEATS SOLD OUT!
PRE-REGISTER FOR THE
2020 ENERGY CONFERENCE

Monero XMR

Page 4 of 4 FirstFirst ... 234
Results 31 to 37 of 37

Thread: ZFM Advanced Explorations Part II

  1. #31
    Senior Member Yaro1776's Avatar
    Join Date
    Aug 2012
    Location
    Heart of Vermont
    Posts
    354

    6 Pole Phase 2

    The machine shop came through with the motor parts today. The parts completed were the Timing rotor and the 6 Pole Neo rotor. Tried a dry assembly of the Neo magnet components along with a steel rod through the center of motor rotor as a magnetic assist. All was good until the placement of the last Neo, then the rotor assembly flew apart damaging two of the Neo's and ending up with two groups of high strength Neo's clustered together. Put this on the Not to Do List, for sure. Separating this mess was tedious.

    IMG_1677.JPG

    For attaching the Neo's to the Aluminum rotor a Loctite AA 332 adhesive will be used. This works well, the Neo skin fails before the adhesive. Game plan is to assemble the rotor step by step and use my Weber grill to cure the rotor adhesive at 200F, fact of life when the outside ambient is less than 20F. Indoors the odor from this adhesive can be toxic, never mind the smell.

    You will note that the Timing rotor has three sets of holes 120 degrees apart for the 1/4"D mini Neo's. In combination with Reed switches spaced 180 degrees apart, the BP switch board will fire every 60 degrees. Of course the appropriate timing Neo's selection must be in place for this to happen. Another obstacle!

    Remains to be seen how all this works out - just an experiment with displaced air core coil poles.

    Ho! Ho! Ho!
    Yaro

    "The Universe is under no obligation to make sense to you." -Neil Degrasse Tyson

  2. #32
    Yaro, Sincerely, consider bolting those in place along with the epoxy. The neos that is. regards, dennis

  3. #33
    Networking Architect Aaron Murakami's Avatar
    Join Date
    Jul 2012
    Location
    Spokane, Washington
    Posts
    1,456
    Blog Entries
    1
    Quote Originally Posted by dennis foyil View Post
    Yaro, Sincerely, consider bolting those in place along with the epoxy. The neos that is. regards, dennis
    Strapping tape works well - both Peter and John used that on top of gluing the magnets.
    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. #34
    Senior Member Yaro1776's Avatar
    Join Date
    Aug 2012
    Location
    Heart of Vermont
    Posts
    354
    Quote Originally Posted by dennis foyil View Post
    Yaro, Sincerely, consider bolting those in place along with the epoxy. The neos that is. regards, dennis
    Thanks for the concern Dennis and Aaron.

    The dry Neo assembly was done to check the fits and forces involved on the rotor prior to applying the adhesive. The rotor was not in the motor and this was part of figuring out the proper Neo mounting sequence. The adhesive will lock everything in place with the strapping tape as a backup - standard procedure in these parts for operation between 6,000-10,000 RPM.
    Yaro

    "The Universe is under no obligation to make sense to you." -Neil Degrasse Tyson

  5. #35
    Senior Member Yaro1776's Avatar
    Join Date
    Aug 2012
    Location
    Heart of Vermont
    Posts
    354

    6 Pole First Spin

    Another day in the continuing adventure of the 6 Pole ZFM started with mounting two opposing N-S Neo's on the rotor. Rotor was then installed to check the overall pole displacement for each coil. The Neo's are 2"Lx1/2"Wx1/2"T. A certain amount of anticipation here.

    Well, as it turns out the coil pole displacement of 60 degrees was not achieved, only 55 degrees - Bummer! It appears that the longer Neo's, with the 1/2" width, behave a bit differently on the 45 degree coil than the 1"x1"x5/8" Neo's. Certainly, there are other influences that modify the coil pole positions.

    No matter - time for the spin test; the motor was wired up and then powered up at a conservative 12v for the first trial. No problem starting up and rotating at a couple of thousand RPM. Shutdown at this point to assess the successes and failures before going forward.

    Another, more thorough calibration, will be completed within a week and the coil positioning tweaked a bit more based on the calibration data. The intention here is to test this present configuration to establish some initial performance baselines. The coils will be rewound at a later date to adjust for the 5 degrees, however another 6 pole rotor with wider 2"L Neo's will be tried prior to this modification.

    More pics and a video in the next posts.
    Yaro

    "The Universe is under no obligation to make sense to you." -Neil Degrasse Tyson

  6. #36
    Quote Originally Posted by Yaro1776 View Post
    Thanks for the concern Dennis and Aaron.

    The dry Neo assembly was done to check the fits and forces involved on the rotor prior to applying the adhesive. The rotor was not in the motor and this was part of figuring out the proper Neo mounting sequence. The adhesive will lock everything in place with the strapping tape as a backup - standard procedure in these parts for operation between 6,000-10,000 RPM.
    When it comes to strapping tape this stuff is the best I have found and it can be picked up most anywhere. I have never thrown a magnet when using this tape. http://www.bunkerincorp.com/hurricane.htm

    I hear some of you guys have issues with throwing magnets at high rpm, this tape will prevent that unsafe event from happening period. Run as much tape as your air gap will allow, make sure each wrap around the rotor is applied under tension so each consecutive wrap will apply more compression, holding your magnets tighter to the rotor. You want close to an 1/16th of an inch for wrap thickness when the rotor is taped. Do this and you can run any rpm you want on smaller machines like the ones on this thread.

    Dave Wing
    Last edited by Dave Wing; 12-11-2019 at 04:36 AM.

  7. #37
    Senior Member Yaro1776's Avatar
    Join Date
    Aug 2012
    Location
    Heart of Vermont
    Posts
    354
    Dave,

    Thanks for the lead on the Uber strapping tape. Checked out the url and it appears worthy of a trial. As the rotors increase in diameter and the Neo's become bigger every little bit of extra retention helps. The Neo's skin usually fails first!
    Yaro

    "The Universe is under no obligation to make sense to you." -Neil Degrasse Tyson

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •