... some sharp curves, you would want to increase the spacing a little to ensure a running clearance. But the full Lenz spacing seems excessive. I don't have any data for German switches, but I guess that the geometry of the GWR curved switches is probably quite close. The upper crossover is created using GWR 10ft switches and 1:6 crossings. That's still very short for the prototype -- if you have a bit more space you could go for say a GWR 12ft switch and 1:7, like this: 2_011203_210000000.png cheers, Martin. posted: 2 Mar 2019 08:14 from: RogerW The MOROP.de gives 95mm as the recognised running lines spacing for 0 scale modular layouts. For the 610mm long Rivarossi main line coaches I seem to remember 100mm spacing with an inner curve of 6ft radius being safe. Maybe you could confirm that using your "dummy vehicle" part of Templot See http://www.morop.org/index.php/de/nem-normen.html Downloadable pdf from this page NEM 962 F Anlagen-Module Nenngröße 0- CDZ posted ...