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Reply to "My early 1946 Lionel Berkshire arrives"

And its not so much the rollers getting hot that was the issue, it was the motor itself overheating on long running display layouts.  Running hot thins and and breaks down the lubrication for the motor's shaft bushings.  The high stack develops more torque and runs cooler, along with having extra time spend line boring the snout bushings and balancing the armature itself.  Engines good for hot rollers are dual motored F3's pulling a heavy load for any decent length of time that haven't been properly serviced in awhile.  Sucking lots of amps thru 2 rollers is a quick way to heat them up!    AD

I’m still comparing the pictures above. What the difference between hi stack and not? What do you look at to tell the difference?

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