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There are several new Challenger and Big-Boy HO models on the market, from Lionel, Trix (I think that's the right maker), and Athearn. From what I've read, all of these models have pivoting driver assemblies similar to what you see on a model diesel engine. This would mean that the models don't truly track like an articulated locomotive. This is an important issue for me in considering the purchase of one or more models. Does anyone have one of these models, or had the chance to test one out? Id' like to know how the mechanisms are put together, and whether or not you feel that the mechanical compromises in the model have reduced the realistic appearance or not. Thanks, Doug Hansen
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