- on Hobby & Modelling
- Published in issue 7/2005 on page 0
Converting a DCM Motor
The DCM motor used in our locomotive is still an old-fashioned 3-pole series motor with an electromagnet to provide motive power. The new 5-pole motor has a permanent magnet. We therefore wondered if we couldn't improve the driving characteristics if we powered the field winding separately, using a bridge rectifier and a 27 Ohm current limiting resistor. This would effectively create a permanent magnet.