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On what does depend rpm of brushed DC motor?How to increase...

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Question by Nikola
Submitted on 12/18/2003
Related FAQ: rec.models.rockets FAQ Part 08 - Boost and Rocket Gliders
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On what does depend rpm of brushed DC motor?How to increase it at about 15000-18000rpm?


Answer by mohan
Submitted on 4/11/2005
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it depends on back emf directly and it is inversely proportional to flux generated
  to increase it lower the flux as much as possible[but not 0] by lowering the current through the shunt coil[i.e. increasing the field resistance]

 

Answer by JOSH
Submitted on 1/17/2006
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the less turns in the windings. the more current that flows which creates a bigger magnetic field (flux. therefore reactes against the magnet more pushing it faster and faster

 

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