... turnout, and there is a noticeable discontinuity in the diverging straight ahead road. The main lines on the left are clearly dead straight at this location, but it's not possible for the track in the foreground to be exactly parallel to them throughout. (This picture also shows a Barry slip in the yard on the right, and catch points in the diamond-crossing giving access to the yard. If the foreground line had been a running line, these catch points would have been much further back beyond the diamond.) padwood582.jpg If faced with this issue, is it preferable to insert the turnout in the straight rather than the curve? If it's a visible section of the layout, you insert the turnout in the main running line, and adjust the size of it to get as near as possible to what you want for the diverging road. For a fiddle yard or other hidden areas where a geometrical solution is required, insert the turnout in the straight track and adjust it until the substitution radius matches the curve. regards, Martin. posted ...