using a dpdt to reverse a drill motor

Discussion in 'The Projects Forum' started by glynn, Jan 30, 2015.

  1. glynn

    Thread Starter New Member

    Jan 30, 2015
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    I have an old black and decker 3/8" drive electric drill. I have a 6 pin dpdt on-of-on switch. How can I use this switch to reverse the drill rotation without flipping the forward/backward lever on the drill?
     
  2. #12

    Expert

    Nov 30, 2010
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    Remove the reversing switch on the drill and attach the DPDT switch in its place.
     
  3. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    AFIK, those motors are wound-rotor, wound-stator. Reversing requires flipping either rotor with respect to stator or vice versa...
     
  4. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
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    Use the switch to reverse the wires to the brushes.​
     
  5. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    The brushes feed the rotor...
     
  6. glynn

    Thread Starter New Member

    Jan 30, 2015
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  7. glynn

    Thread Starter New Member

    Jan 30, 2015
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  8. glynn

    Thread Starter New Member

    Jan 30, 2015
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    Here's the drill internals....not sure how to get rid of the trigger and have it operate solely on a toggle
     
  9. BillB3857

    AAC Fanatic!

    Feb 28, 2009
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    Max, you lost me with the bridge suggestion. Another problem may be that the drill could be variable speed, ie triac control.
     
  10. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Actually forget that, I jumped the gun a bit.
    Max.
     
  11. MaxHeadRoom

    Expert

    Jul 18, 2013
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    As others have said, it is a Universal motor so the field or the armature has to be reversed WRT the other.
    If you notice the left hand stator winding goes to the left hand brush, this conductor would have to be cut and each end connected to a conductor to enable the reversing of the field to the rotor.
    It may not be worth the hassle.
    Max.
     
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