Skip to main content

I have been reading through information on this on the Forum about the Lionel 6-18009 Mohawk.  If I replace the grease and lubricate believe it should work.

However the question I have is:  Sounds like it was considered a good scale engine back in 1990 but is very obsolete tech in 2024.  When reading about "upgrades" mentions are made about compatibility with the Pullmor Motor.  Now I am about to show my ignorance, but to me the motor appears to be what I would term an AC/DC universal motor.  Won't this motor run on DC?  What makes this motor require different Output from a more up to date control board than a DC can motor?

Can someone please explain this in terms that someone that's not an EE can understand?  Thank you.

Lionel 6-18009

Attachments

Images (1)
  • Lionel 6-18009
Original Post

Replies sorted oldest to newest

I will eventually install ERR electronics in my 18009, specifically the AC Commander.  The Pullmor motor is a high-current, 3-pole design that is, IMO, best left as an AC motor, handled by the AC Commander.  The locomotive can be converted to a Pittman DC can motor, driven by the ERR Cruise Commander, at greater cost.  The disadvantage of the AC Commander is that it has no "cruise control" feature.  I don't believe it practical to rewire the Pullmor for DC operation and drive it with a Cruise Commander, but I could be wrong.

@KarlDL posted:

I will eventually install ERR electronics in my 18009, specifically the AC Commander.  The Pullmor motor is a high-current, 3-pole design that is, IMO, best left as an AC motor, handled by the AC Commander.  The locomotive can be converted to a Pittman DC can motor, driven by the ERR Cruise Commander, at greater cost.  The disadvantage of the AC Commander is that it has no "cruise control" feature.  I don't believe it practical to rewire the Pullmor for DC operation and drive it with a Cruise Commander, but I could be wrong.

Thank you for the insight Karl.

The problem with trying to run the Pulmore motor from a DC controller is they're designed to just supply the armature and reverse polarity to reverse direction.  However, the Pulmore motor has a field and an armature, and the field had to stay the same polarity and reverse the polarity of the armature to reverse directions.  Also, the Pulmore motor field is grounded on one end, which poses another small problem.  Finally, the Pulmore motor draws much more current running than the DC can motor, and would tax most can motor controllers.  Finally, the Pulmore motor has three poles, most can motors have 5 or 7 poles.  So, even if you solved the other problems, you still have choppy running.  Jon Z. from Lionel has a prototype cruise board for the Pulmore, but he was never happy with the low speed performance, and so never pursued the project.

Add Reply

Post
This forum is sponsored by Lionel, LLC

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

×
×
×
×
Link copied to your clipboard.
×
×