... with the works behind the 'Brighton' sign: http://www.flickr.com/photos/31890193@N08/3479344013/in/faves-70607220@N04/). So I'm assuming the formation may have been inherited from much earlier but some changes made in the 20th century and normal renewals. You can see why the tandems have been giving me trouble! Rgds TH posted: 8 Jul 2013 17:44 from: Martin Wynne Hi Tony, Thanks for the further notes. I have had another stab at this: 2_081224_530000000.png The relative disposition of the V-crossings now matches the photos. I have made the centre road the main road, with a straight entry and zero-length transition to 1560mm radius within the tandem. The first switch is RH, 15ft straight switch leading to a 1:12 V-crossing. The second switch is LH, 12ft straight switch leading to a 1:8 V-crossing. The middle V-crossing is 1:6. The turnout on the right is a 9ft switch and 1: ...