I know that the original Lionel tubular 031 curved track was not measured in the conventional way from center rails, however I do not remember the actual dimensions. I have put together a couple of sample circles and come up with about 28.5 inches center to center and about 30.5 from outside of track clips. Does anyone know the exact dimensions? Also, does MTH 031 match up with the Lionel 031. Any assistance would be appreciated.
tk.
jim r