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RE: [multimachine] overhead belting for milling spindle

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  • Bill Donohue
    Sent from my Verizon Wireless Phone ... From: Pierre Coueffin Sent: Wednesday, March 20, 2013 10:07 AM To: multimachine@yahoogroups.com
    Message 1 of 8 , Mar 21, 2013
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      Sent from my Verizon Wireless Phone



      From: Pierre Coueffin <pcoueffin@...>
      Sent: Wednesday, March 20, 2013 10:07 AM
      To: multimachine@yahoogroups.com
      Subject: Re: [multimachine] overhead belting for milling spindle

       

      Sherline uses a toothed belt running in a pulley that has no teeth.  I've never had any problem with the belt slipping or stalling during normal lathe or milling operations with this setup.  They do not invert the belt, since the belt has sloped sides, and the pulley has a matching slope.  In practice, it is like a V-belt, but the teeth allow it to wrap around a smaller diameter pulley.

      On Tue, Mar 19, 2013 at 5:28 PM, David G. LeVine <dlevine@...> wrote:
       

      Just as an aside, automotive multi-rib belts can be flipped inside out
      if you really need a flat belt. If that doesn't transmit enough torque,
      ribbed pulleys can be cut while running the belt inside out, then
      flipped back once they are installed.

      Another trick is to use automotive timing belts, inside out for flat
      drives, with timing pulleys for 1:1 or 2:1 ratios.

      Dave 8{)




      [The entire original message is not included]
    • David G. LeVine
      From: Pierre Coueffin ... However that is not a flat belt, it is a cogged V belt, similar to the AX, BX, CX, etc. series. Dave 8{) --
      Message 2 of 8 , Mar 21, 2013
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        From: Pierre Coueffin <pcoueffin@...>
        Sent: Wednesday, March 20, 2013 10:07 AM
        To: multimachine@yahoogroups.com
        Subject: Re: [multimachine] overhead belting for milling spindle

         

        Sherline uses a toothed belt running in a pulley that has no teeth.  I've never had any problem with the belt slipping or stalling during normal lathe or milling operations with this setup.  They do not invert the belt, since the belt has sloped sides, and the pulley has a matching slope.  In practice, it is like a V-belt, but the teeth allow it to wrap around a smaller diameter pulley.


        However that is not a flat belt, it is a cogged V belt, similar to the AX, BX, CX, etc. series.

        Dave  8{)

        --


        "Among the many misdeeds of British rule in India, history will look upon the Act of depriving a whole nation of arms as the blackest."

        Mohandus Ghandi, An Autobiography, Page 446.
      • Bruce Bellows
        The gogged V-belt is also capable of transmitting higher horsepower and runs with more tension then a standard V belt. The smallest sheave diameter for an AX
        Message 3 of 8 , Mar 22, 2013
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          The gogged V-belt is also capable of transmitting higher horsepower and runs with more tension then a standard V belt. The smallest sheave diameter for an AX belt is 2.2" pitch diameter and for a BX it's 4.0" PD.

          Bruce Bellows

          On 3/22/2013 2:26 AM, David G. LeVine wrote:
           

          From:Pierre Coueffin <pcoueffin@...>

          Sent: Wednesday,March 20, 2013 10:07 AM
          To:multimachine@yahoogroups.com
          Subject:Re: [multimachine] overhead belting for milling spindle

           

          Sherline uses a toothed belt running in a pulley that has no teeth.  I've never had any problem with the belt slipping or stalling during normal lathe or milling operations with this setup.  They do not invert the belt, since the belt has sloped sides, and the pulley has a matching slope.  In practice, it is like a V-belt, but the teeth allow it to wrap around a smaller diameter pulley.


          However that is not a flat belt, it is a cogged V belt, similar to the AX, BX, CX, etc. series.

          Dave  8{)

          --


          "Among the many misdeeds of British rule in India, history will look upon the Act of depriving a whole nation of arms as the blackest."

          Mohandus Ghandi, An Autobiography, Page 446.
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