Shamrock Ave. Ft. Worth, TX

[Justinmiller171]

I just set up a 15" half-circle and set a gp-7 and some 50' boxcars on it and they run good on it, it doesn't look good visually but it will work. all cars stayed on the track even at higher speeds and no problem with the couplers.

You should be okay with 15" curves, although I still suggest going without them.