... angles than my C10. So my "piece of string" question. What would be "normal" on a main (ish) line? I've started to build, so it's now too late to change, I'm just interested in your thoughts. posted: 17 Aug 2020 14:39 from: Martin Wynne ikcdab wrote: The inspector quotes the turnouts as being "1 in 16 with 30ft switches". I take this to be a F switch. Hi Ian, No, it's a GWR 30ft straight switch: 2_170910_250000000.png The GWR had only 3 flexible switches, B, C and D, introduced for new work from 1930. For the other sizes, shorter and longer, they continued to use their older designs. There is no "normal" crossing angle, everything depends on the site, the traffic, and the line speed. If there is any curving it always means a longer crossing to avoid a severe speed restriction over the diverging turnout road. 1:10 is fine for a station throat or branch terminus area, but ...