circuit board on tredmill to Saw

Discussion in 'The Projects Forum' started by greg1m53rg, Jul 8, 2014.

  1. greg1m53rg

    Thread Starter New Member

    May 21, 2014
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    Hi
    I am new and would be very thankful for any help !!
    I have a dc motor out of a treadmill that has a control board that does not work. {the one that adjusts the speed and incline} the circuit board works fine
    I would like to bypass the control so I can use this motor on my table saw.
    Thanks
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
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    You will still need a controller of some kind, look on ebay for KB or Baldor drives, they have the current limit and other features that you would need for any kind of decent control.
    Max.
     
  3. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
    5,005
    745
    How about a motor speed controller using a triac, need to upgrade the triac and bridge rectifier to suit the current.
     
  4. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    I second MaxHeadRoom's suggestion and have personal experience with KB drives for relatively small DC motors. BTW, that patent number cites a KB patent (5,066,884) as prior art. Nothing like sticking with what is known to work.

    John
     
  5. alfacliff

    Well-Known Member

    Dec 13, 2013
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    nice pictures of board, but none of motor, is it an ac or dc motor? that would have a lot to do with the kind of drive needed.
     
  6. MaxHeadRoom

    Expert

    Jul 18, 2013
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    OP states DC.;)
    I have only seen one AC-capable motor on a treadmill and that actually was a Universal motor run in DC mode.
    Max.
     
  7. Experimentonomen

    Member

    Feb 16, 2011
    331
    46
    And treadmill motors are far too weak to run a table saw.

    Yes they do state1-2HP on the data plate, but this is not true, i have a motor thats larger than a treadmill motor and its only rated to 400 watts.
     
  8. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Plus they do not reach the very high RPM's usually associated with circular saws.
    Any RPM increase using mechanical means would decrease the torque even further.
    Max.
     
  9. greg1m53rg

    Thread Starter New Member

    May 21, 2014
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    The motor is 5 hp dc
    that turns @ 5100 rmp
     
  10. MaxHeadRoom

    Expert

    Jul 18, 2013
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    5HP T.M. motor? Take it with a pinch of salt!
    If you compare it to high industrial 5HP DC Motor you can usually see the difference in size right away.
    Max.
     
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