Marklin/TRIX HO scale challenger 3784 testing on the RailStand

HO scale challenger 3784 testing on the RailStand roller demo/test stand, the roller demo stand install into the wood base.

[choochoo]

Having roller systems for HO, S and O Gage locomotives I notice the stability of each locomotive I test. The rocking of the unit as the wheels roll. I do have two Marklin/TRIX Big Boy's and like this Challenger they are more steady than any other locomotives I have run. Balance is important if you expect true prototypical performance. TRIX seems to be the best in my opinion.