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Variac problem

Discussion in 'Electronic Design' started by John Popelish, Oct 30, 2007.

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  1. I would be looking for a motor brush about the right size
    and with an attached lead (if yours has that). You can sand
    a slightly over sized one down to fit the holder and be back
    in business for a few dollars and dirty hands. Around here,
    the hardware store and the Farm Bureau store sell them. Or
    you might find a suitable one in an old electric drill or
    other universal motor (though ones with leads attached are
    hard to find).
  2. Robert Baer

    Robert Baer Guest

    I have a GE Volt-Pac #9T92A1 2.5A variac, and the brush has died
    (broken up) on me.
    Online search shows a source that costs about $45, and a low
    brand-new price variac replacement is $75+shipping (digiKey wants about
    That $45 price is totally outrageous for a dinky brush that one could
    lose if dropped.

    Any decent-priced sources?
  3. I have several cases of Superior #21 powerstats I bought a while ago. I can
    sell you as many as you want for $35 each (which is what I paid) plus
    shipping. I can probably fit several in a USPS $10 flat rate box. Of course
    these are bigger (5 A) than what you have.

  4. Barry Lennox

    Barry Lennox Guest

    There used to be small companies (like a one-man band) in some places
    that could make custom brushes from several stock sizes, they just
    grind them to suit on a sander, or DIY, it is a dirty job though.
  5. john jardine

    john jardine Guest

    My 8Amp Variac lost it's brush (god knows how). Simply couldn't be arsed
    going through the process of finding/buying the correct part, so for peanuts
    picked something near from a box containing thousands of 'em, at a local
    vintage auto jumble. Bit of filing and it went straight in.
  6. Jamie

    Jamie Guest

    go to a sewing machine store or a hardware store which use to at
    one time have small brushess on hand for power tools and little
    motors. You can get one to fit I'm sure.
  7. Robert Baer

    Robert Baer Guest

    Worth the try; thanks!
  8. Robert Baer

    Robert Baer Guest

    Worth a look...
    Brush shape looks something like this..

    | |
    +--+ +--+

    ... where the ^ is a bit larger to this "scale".
  9. Robert Baer

    Robert Baer Guest

    At present, i am bidding on e-bay; will just recycle the one i have...
    ....seems the easiest way to go.
  10. Robert Baer

    Robert Baer Guest

    This one has no leads.
    Have "run around" various hardware stores and gave up.
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