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Pittman with Extra Magnets

736 Views 3 Replies 2 Participants Last post by  R Livingston
Does anyone know anything about using neo magnets to supplement the field of old motors like the Pittman DC 196?

Would the increased field strength be best with a rewind or substitute armature (have some Pittman 65A-6 volt armatures). And what gear ratio would then be best?

Has anyone experimented with the stock wind, and extra magnets, while gearing at, say, 2.5:1? (more torque, less revs than with the stock field).

Motor would be used on home tracks with 10-16 foot straights, at 12 to 13.8 volts, up to 30 amps.
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I have been clicking the magnets on to the motors the way they "want" to go. I used a compass for a while, until I reversed its polarity in my magnetizer. Took me a while to figure that one out...

The best way seems to be powering the motor up to 6 volts or so on the bench, and moving magnets around until the revs go up. Worked fine on a Strombecker Scuttler, but couldn't find the "sweet spot" for a Tyco 901-6v inline. All trial and error at this point.
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