Need to reduce rpm's of 6 volt motor

Discussion in 'General Electronics Chat' started by mvp204, Nov 6, 2007.

  1. mvp204

    Thread Starter New Member

    Nov 6, 2007
    Have one of those spinning wing decoys with 6 volt motor. Want to reduce the speed of the motor to about half. Is there a potentiometer or resistor available for this? Thanks, Mark
  2. thingmaker3

    Retired Moderator

    May 16, 2005
    Use the site search function to find "PWM" or "Pulse Width Modulation." Plenty of good advice for the reading.
  3. nomurphy

    AAC Fanatic!

    Aug 8, 2005
    You mabe able to use a rheostat, which is the same thing used in old toy trains (the big black box with the knob on top), and in slot-car hand controllers. It mainly depends on how much power the rheostat (pot) will need to dissipate vs. the voltage /current required by the motor -- which is why they tend to be so large.
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    As a cheapo suggestion, eliminate one battery (this assumes the decoy has 4 AA or C cells). Cut a dowel to length, wrap it in foil, and use it to take the place of one battery. This will reduce the voltage and possibly make the motor run slower.
  5. mrmeval

    Distinguished Member

    Jun 30, 2006