@Jerry Multon said:
Can anyone tell me the min. radius that is used in prototype practice for station platform curvature?
I’ve recently designed and constructed a short platform on 4.5 chains radius in 12in:1ft scale, if that helps? The end-throw of a Mk.1 coach was used in the calculation to increase the clearance distance between the running edge and the platform edge. Everything passes normally though as they say at Bank Central Line eastbound, “Mind the gap”.