I'm not familiar with the Wagner drive [ or have forgotten from the MR's from years ago ]. I thought -- and I could be wrong here -- that the Q car drives were all single axle drives, like the Magic Carpets, and thus are a different category.
It appears Forumite WBC may know about similar predecessors to Kato, but he doesn't want to tell us.
Anyway, what's gone before is really moot anyway, and I'm somewhat sorry I brought it up; the key thing is the hope, as PC-Quebec suggested, that other builders who produce 0 ga equipment can scale it up and produce it for us -- with no patent infringement, of course !
Best, SZ
Look no further than American Flyer.
One of these pictures is the drive system for the Baldwin switcher and the other is from Also PA-1. Clearly they are of the same concept as the Kato drive system. A permanent magnet motor drives series of gears which turns a longitudinal shaft equipped with a worm which turns the wheels.
