Full length passenger cars are usually 85' over the couplers. Shortie cars could be 72'. Probably 80% of the full length and must negotiate 20" radius HiRail track with ease.
As for the general operating radius of Scale S Gauges, I don't know that answer. Need some feedback for that. Feel free to chime in.
Scott - China
Thanks for considering these! For budget planning, assuming these are a "go" when would the PRR and NYC sets actually hit? I have to try and squeeze these in around the E6's, E7's and F3's in O scale!