Wednesday 19th November 2025

Progress 'normalising' the diamond crossover.

The first job was to cut away the insulating material in the two frogs, which a disc cutter in the right hands made short work of. Various pieces of NS rail  laid upside-down were trialled to fill the gap and create the new frog. These will be filed down to the correct shape in due course.


Insulation removed.

New frog - Various pieces of NS rail were trialled upside-down to fill the gap. These will have to be filed down to the correct shape in due course.

Geoff had worked out that we required one more wire between the boards and the control panel to complete the new switch wiring. Fortunately, the 20-way socket on the board had a single spare pin and with the help of a record drawing/schedule, it was relatively easy to add the wire.


The rewiring of the crossover is to suit the future switching arrangement designed by Geoff. A three position rotary switch on the control panel will enable:

Position 1. Diagonal right-to-left.

Position 2. Middle, straight through running on both front and rear tracks. 

Position 3. Diagonal left to right.