As good solution for tunnel hidden catenary - There are reversed rail from Atlas Code 55 flex track. (Hard, flexible, solderable, nonoxidizing, good sliding) But how to made joint point between modules? Obviously, the ends of rail from both modules must be longer than track itself, they also must overlap each other and bended up allowing mechanically noninterruptable moving of pantograph. But how one can make this ends as removable (shiftebable into module )for transportation? Please answer who knows. -------
