15' radius for 4-6-6-4 or 4-8-4 Gauge One? I'm interested in garden rail, but the portion of my back yard that I can use is about 70' wide by 30' deep, and that's fence-to-fence (wide) and fence-to-patio (deep). I'm concerned that only having a max. 15' radius turn is going to look pretty silly with longer locomotives such as the Challenger and even the GS-4, especially if there are any passenger cars to speak of. Is this just too tight a radius? Any opinions? Would I be better off selecting older-era, shorter engines? Thanks.