So I just saw on Facebook, a traction modeler use an a Athearn SW1500 chassis, for powering a 3D printed model of Charles City & Western No. 50 (an Interurban car I believe is at Boone, Iowa). How tight a curve can an SW1500 from Athearn take?

Hi, My Broadway EMD SW1500 Switcher needs servicing. But I do not know how to remove the shell ! Can someone help me with the instructions to do so ? Or indicate a Web Link on YouTube. Thank you, John From Montreal - Canada

If I run the engine around the track I have no problems. If I use the engine as a switcher backing into sidings, building a larger train, etc, the engine stalls when and wherever I change direction. Sometimes it stalls on frogs. This I can take care of, but it stalls on good clean straight...