... Forum sent a picture of a drawing for this area- here it is. 3591_091212_270000000.png The radius is marked, roughly track gauge, extending over a greater length than the sleeper width. Meanwhile the printout from my Templot template shows a curve, but not one as long and gentle as that, though it is difficult to say where it begins and ends- just the useful thing about the three marks on turnout acute crossings. 3591_091216_190000000.jpg Here is a screenshot of the Templot trackpad for the same thing, showing a crisp bend. 3591_091213_080000000.png So I'm wondering a few things about this. First, is there a good modelling reason not to emulate the prototype? Dave Bradwell on the Scalefour Forum suggested that making the knuckle bend crisp will help flanges not to go the wrong way on such a flat crossing in P4. This seems completely credible, and I wondered if that is the reason Templot doesn't show a prototypical gentle bend. Second, what I think is the most interesting thing- why does the prototype do what it does? Surely the same considerations would ...