Pittman with Extra Magnets

736 Views 3 Replies 2 Participants Last post by R Livingston, Oct 2, 2004

R Livingston

Discussion Starter · Oct 2, 2004

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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R Livingston

Discussion Starter · #4 · Oct 2, 2004 (Edited by Moderator)

Thanks.

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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