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Reply to "Walthers Polydrive 060 switcher 1940-41"

I don't think real accurate quartering would be needed with the poly drive.    You need very accurate quartering when the side rods carry the power from the geared drivers to the others to maintain smooth power and avoid lockups etc.

With poly drive, the drivers are all driven from the internal shaft  and rods just ride along like the old Lionel and what not from 50s and such.    The rods on those old toy trains, even the nice were just along for the ride.    The better ones had most of the stuff needed but it carried no load.   So if there is no load the rods can be bored out sloppy if the quartering is a little off and the worst that will happen is a little noise.

Another thought, poly drive is not a whole different it appears than what we get on most O scale diesels with gearboxes on each axle connect to a single gear tower.    My newest SD9 has all axle powered with gearboxes all connected to a single shaft and gear tower is a good recent example from Sunset.

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

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