Just before leaving for York I got an email from Steve at Ross Custom Switches asking me if I would test a prototype standard gauge switch that he is developing. He wants his design to allow any and all standard gauge locos and rolling stock to be able to negotiate the switches without problems.
This photograph shows why many of the vintage "large gear" locomotives such as the Lionel #42 have problems with turnouts. Note the way the large drive gear dips down below the railhead. If there is not sufficient clearance between movable rails and check rails and at the frog, these vintage locomotives with hit, hop and jump over switch components. Steve's new design has this covered. All of my big gear locos and rolling stock with large wheel treads cleared the prototype without problems. Hooray! Terrific!