Can we convert DC geared motor rpm from 200 to 60 rpm

Replies

• 

  Jeffrey Arulraj

  Use gears on the op side I am not sure But I know that the gears can be used to both speed up and slow down
  
  Couple a larger gear to the output of the geared motor
  
  The gear you must have be capable of reducing the RPM that can be done by using a Larger gear in the output of the motor
  
  Hey #-Link-Snipped-# #-Link-Snipped-# am I right in this do correct me if I am wrong
• 

  Gurjap

  Although another gear can be used, it will be a major hassle to make space for it, if it can be arranged at all. Instead I suggest controlling the voltage supply to the motor by using a potentiometer or a variable resistor in series with it.
• 

  mallumatmari

  Gurjap

  Although another gear can be used, it will be a major hassle to make space for it, if it can be arranged at all. Instead I suggest controlling the voltage supply to the motor by using a potentiometer or a variable resistor in series with it.

  By adding resistance in series Can I get same torque as 60 rpm motor??? I'm asking because the bot should run on terrain.
• 

  Jeffrey Arulraj

  Hey just check with the motor there are ways to control the Speed of the Motor
  
  Check for articles relating to Speed COntrol of Motors that will surely help you
• 

  Gurjap

  Interesting question. I might do some analysis here by asking you what kind of load the motor is carrying and then telling you that since
  
  Power= Torque x angular speed
  
  and since your load hasn't changed, but you have decreased the voltage supply and hence the power, the angular speed must proportionately decrease, leaving the torque pretty much the same.
  
  I refer you to lancet.mit.edu for more info.
  
  PS. Remember, your choices in controlling the RPM might pretty much boil down to putting a resistor in series to the motor. In that case, you'll just have to make do, without considering a reduction in torque.
• 

  mallumatmari

  Conqueror

  Hey just check with the motor there are ways to control the Speed of the Motor
  
  Check for articles relating to Speed COntrol of Motors that will surely help you

  Conqueror

  Hey just check with the motor there are ways to control the Speed of the Motor
  
  Check for articles relating to Speed COntrol of Motors that will surely help you

  Ya I got a pdf on dc motor speed controlling. Thank you
  Even that gear idea looks nice, I will try.
• 

  Jeffrey Arulraj

  mallumatmari

  Ya I got a pdf on dc motor speed controlling. Thank you
  Even that gear idea looks nice, I will try.

  Geared control is having a limitation of larger size so do check it friend
• 

  zaveri

  #-Link-Snipped-#
  
  you were quite right about the gears.
  
  #-Link-Snipped-#
  
  you can reduce from 200 rpm to 60 rpm by using gears.
  
  all you have to do is couple a larger gear to the existing gear on the motor shaft.
  
  and as for the specifications of the larger, use this formula:
  
  T1/T2 =N2/N1
  
  where T1 = number of teeth on smaller gear (the one on the motor shaft).
  
  T2 = number of teeth on the larger gear (which you will now couple)
  
  N1 = speed of small gear (200 rpm in your case)
  
  N2 = speed of larger gear (60 rpm in your case).
  
  
  you know T1 N1 and N2. substitute them in the above formula and get the value for T2.
  
  also if you want to save space, then replace the existing small gear with an even smaller gear, since this may also bring down the size of the large gear for the same speed ratio.
• 

  mallumatmari

  Gurjap

  Interesting question. I might do some analysis here by asking you what kind of load the motor is carrying and then telling you that since
  
  Power= Torque x angular speed
  
  and since your load hasn't changed, but you have decreased the voltage supply and hence the power, the angular speed must proportionately decrease, leaving the torque pretty much the same.
  
  I refer you to lancet.mit.edu for more info.
  
  PS. Remember, your choices in controlling the RPM might pretty much boil down to putting a resistor in series to the motor. In that case, you'll just have to make do, without considering a reduction in torque.

  Thank you, my first pick and place was flop because I not used any formula for arm, I will use that arm formula.
  And for motor speed reduction I got a pdf,
• 

  arunchary

  us this configuration to get the control of speed in PWM manner.
• 

  arunchary

  #-Link-Snipped-#
  follow the circuit which is pwm controlling of motor speed.
• 

  arunchary

  #-Link-Snipped-#