Bob, Ed is right about the flywheels. Two motors will mess us BEMF. Motors generate a "back voltage" (back electro-motive force or BEMF). Since the decoder output is usually a series of pulses, with the width determining the "average" voltage, the decoder actually measures the back EMF during the space between the pulses. Since two motors in a model will never be identical or have identical loads, even if they were indentical, you would never get a good reading unless you used a separate decoder for each motor.
Dave Heine Easton, PA -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ed Sent: Tuesday, October 18, 2011 1:17 PM To: [email protected] Subject: {S-Scale List} One Motor vs. Two > This also brings up the question of Ed's mentioning of BEMF with many decoders. I wonder if a flywheel would also have similar effect of interfering with that feature as the dual motors might? > Bob Werre Roberto'.....A flywheel does not interfere with the decoder's sensing of the generated voltage during the coasting time in between the DCC pulses. Flywheels are a great addition to any loco as well as all-wheel electrical pickup. Makes a world of difference. Ed L. ------------------------------------ Yahoo! Groups Links ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/S-Scale/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
