Hi everyone, I am building a small HO layout. I can get more track in and a better fit if I use some curved turnouts. I plan on running Athearn Genesis sd-40 -t2's. My question is: has anyone figured out the ABSOLUTE minimum inside radius CURVED TURNOUT that this engine can take? I would work on this problem myself but I don't have any flex track in order to make tighter curves and experiment. (and payday is not until next week). I know that I should not plan on running these locos on this small layout. but I like them and my train room is very small. I am going to give it a try. Additionally, what company makes curved turnouts with the sharpest curves? Thank you.