Actually, no. The Model Power “Metaltrain” cars are new tooling. The Mantua Classics cars are from Mantua, of course, but oddly enough, only the old-time cars are Tyco tooling. The former Mantua “Heavies” were originally the Lindberg line. The freight cars in the old Tyco line went to IHC.
I think Model Power’s original plastic trainset line came from Cox.
Yes, those trucks made a big splash - weren’t they the first to use delrin and needlepoint axles? Quite an innovation, that was.
The early Cox line was Athearn, yes. At some point (1974 according to Tony Cook’s site) they started importing their own line, and this ended up going to Model Power. Their wide-vision caboose and weird container cars, for instance, are old Cox cars.
Walthers’ Trainline GP9 is apparently an upgraded Cox GP9 with a new drive.
Tony Cook is doing a great job gathering up information on these various trainset lines, which is an interesting and neglected field of HO model railroading. I don’t necessarily want to run 'em, but I sure do like to read about 'em.
Athearn was among the first to use needle point axles with RP25(.110") wheels and was smooth rolling however,the Lindbergs was by far the smoothest rolling.
Indeed Tony is doing a great job on the old train set lines which is part of the history of model railroading.