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Re: [mill_drill] Treadmill motor conversion

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  • Curt Wuollet
    Well, the treadmill motor project is back on the shelf, pending a heftier drive. Checking out ebay and the usual suspects, there don t seem to be any decent
    Message 1 of 38 , Jun 4, 2009
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      Well, the treadmill motor project is back
      on the shelf, pending a heftier drive.
      Checking out ebay and the usual suspects,
      there don't seem to be any decent deals at
      the moment. Drives in the 15 or 20 Amp
      class are too spendy at the moment, I'll
      have to talk to some people and maybe
      get a blown drive to fix. I have a small
      KB VFD in that condition, I may see if
      there are any likely 3 ph. motors floating
      around. No mods to the mill so I can
      bolt it on again when I get electronics.
      Put the mill back together to make a
      scale mount for the Z axis. The prototype
      has been working great, so I'll do the
      permanent unit now that I have some
      time. Took some pix which I'll post.

      Regards

      cww

      Starlight Tool Services Ltd wrote:
      >
      >
      > Rick
      >
      > The LA Fitness models that I have worked on are 120V 1 Ph 20A and the
      > internal VFD supplies the neccesary 3 Phase output to the motor.
      > These motors would be ideal for your applications other than they are
      > open design, not even open drip proof if I remember correctly.
      >
      > Twist lock plugs are available in single and three phase and a variety
      > of voltages, and are usually used to prevent accidental unplugging of
      > the machine so I could see why they would use them at a large Gym..
      > Our local gym uses a cable clamp and screws the cords to the wall.
      >
      > I would not hesitate to grab one of these units, if the price was
      > right, but I would have a hard time justifying paying any amount of
      > money for them rather than just getting a proper TEFC 3 phase
      > motor and a controller for it and not have to concern myself with
      > "getting Rid" of all the extra garbage that comes with the machine.
      >
      > Just my 2 cents
      >
      > Walter
      >
      >
      >
      >
      >
      >
      >
      > ----- Original Message -----
      > *From:* Rick Sparber <mailto:rgsparber@...>
      > *To:* mill_drill@yahoogroups.com <mailto:mill_drill@yahoogroups.com>
      > *Sent:* Tuesday, June 02, 2009 10:05 AM
      > *Subject:* RE: [mill_drill] Treadmill motor conversion
      >
      > Walter,
      >
      > That explains why the plugs on the machines at my local LA Fitness
      > look a bit odd. They seem to be twist lock Hubble and now I can
      > see that they are probably 3 phase. So buying a used one of these
      > wouldn't be so easy to adapt without yet another box to convert
      > from 220 to 3 phase. DC sounds better to me right now.
      >
      > Rick
      >
      > *From:* mill_drill@yahoogroups.com
      > [mailto:mill_drill@yahoogroups.com] *On Behalf Of *Starlight Tool
      > Services Ltd
      > *Sent:* Monday, June 01, 2009 1:00 PM
      > *To:* mill_drill@yahoogroups.com
      > *Subject:* Re: [mill_drill] Treadmill motor conversion
      >
      >
      >
      >
      > Just serviced three LA Fitness commercial grade treadmills.
      >
      > They have 3 phase motors with VFD drives.
      >
      > Walter
      >
      > ------------------------------------------------------------------------
      >
      > No virus found in this incoming message.
      > Checked by AVG - www.avg.com
      > Version: 8.5.339 / Virus Database: 270.12.50/2150 - Release Date:
      > 06/02/09 06:47:00
      >
      >
      >
      >
    • Curt Wuollet
      Well that one is on hold also. They want like $15 for shipping. Regards cww
      Message 38 of 38 , Jun 7, 2009
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        Well that one is on hold also.
        They want like $15 for shipping.

        Regards
        cww
        Curt Wuollet wrote:
        > Take it from me. it's no picnic
        > being in the electronics business
        > anymore. We don't do electronics
        > here like we used to, it's all overseas.
        > I've bought stuff from them before
        > but I don't remember exactly what.
        > They have a highly eclectic selection
        > that varies from time to time. I was
        > also gonna look at the other tach
        > they list online. Maybe that's the
        > one with the surface speed and
        > shaft speed gizmos.
        >
        > Regards
        >
        > cww
        >
        > Regards
        >
        > cww
        >
        > Rick Sparber wrote:
        >
        >> cww,
        >>
        >> The laser tach has worked very well as long as the reflective tape is
        >> nice and smooth.
        >>
        >> I assume you will deal with Circuit Specialists on line. I am
        >> fortunate to be in their neighborhood once a week and they have
        >> counter service. No S/H. Just tax. The place is funny to visit. Until
        >> recently, their sign was busted up so it was hard to tell if it was
        >> them. Their awning was in shreds and sitting in the parking lot. The
        >> lot was covered with loose gravel and bits of broken glass. You go
        >> through this beat up old rusty HEAVY steel door. Their retail space is
        >> all roped off. All you see are a few people on the phone and a desk
        >> with lots of little drawers behind them. Yet the people are very
        >> helpful and nice and the prices are great. No minimum either.
        >>
        >> They finally got rid of the awning and old sign. Their new sign is
        >> just their URL. The gravel and glass has finally been swept up.
        >>
        >> Rick
        >>
        >> -----Original Message-----
        >> From: mill_drill@yahoogroups.com [mailto:mill_drill@yahoogroups.com]
        >> On Behalf Of Curt Wuollet
        >> Sent: Sunday, June 07, 2009 3:19 AM
        >> To: mill_drill@yahoogroups.com
        >> Subject: Re: [mill_drill] Treadmill motor conversion
        >>
        >> Yeah, I can be patient. The bug to
        >> have variable speed bites me when
        >> I use the mini-lathe which has it and
        >> it's really handy. Also, I would like
        >> more spindle speed for tiny bits and
        >> end mills to do PC board work. But
        >> that isn't a priority now anyway I
        >> guess. When I saw the motor cheap
        >> I went off on a tangent. I may order
        >> one of those laser tachs though, that's
        >> a really good price and I have lots of
        >> uses for it.
        >>
        >> Regards
        >>
        >> cww
        >>
        >>
        >>
        >>
        >> ------------------------------------
        >>
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        >>
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        >>
        >>
        >>
        >>
        >
        >
        >
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