I'm reading an article by Joe G. It finally hits home a point that I maybe missing. He states the class one RR min frog used is a #8. !!!!!
What? A #8 is min and in yards! A lot of people post that larger curves look better and are more realistic. I try to use the biggest that will fit. SOmetimes I just have to make it fit. Then I notice some real traclwork with what appears to be sharp curves. Sure they're just tracks for an industry. They look pretty sharp for real engines to manage. I see min curves listed on the loco's spec page and now I'm wondering if there's a minimum radius that the real RRs use for curves? What would a class one RR use on the mains? How about sidings?
I have always just used what my engines will navigate as the min I used. If it looks too small, I enlarge it a bit. Not ever thinking that there must be a real spec somewhere that I could go by. The Loco spec page with min curve degree maybe this place???