... it along it each track. The spacing usually needs to be increased on sharp curves. This can be checked for running clearances using the dummy vehicle tool. tools> spacing-ring dummy vehicle menu item. regards, Martin. posted: 26 Jul 2014 14:01 from: Martin Wynne Hi Michael, Here is the dummy vehicle tool being used on that tight spot. I made a dummy vehicle copy on the outer track, and here the dummy vehicle is being rolled along the turnout road on the inner turnout: 2_260808_320000001.png At A above I have attached the spacing-ring to the dummy vehicle. You can see that it is infringing the opposite rail, indicating that the track spacing is too close. Rolling the dummy vehicle with the spacing-ring attached is a convenient way to check the spacings. But to work against the adjacent rail like this, the ring inner diameter needs to be set according to your track gauge. For 6ft way 44.67mm centres, the settings are: P4 68.67 mm EM 69.3 mm 00-BF 16.5 71.0 ...