• Mechanical Interlocking

  • Discussion related to everything about model railroading, from layout design and planning, to reviews of related model tools and equipment. Discussion includes O, S, HO, N and Z, as well as narrow gauge topics. Also includes discussion of traditional "toy train" and "collector" topics such as Lionel, American Flyer, Marx, and others. Also includes discussion of outdoor garden railways and live steamers.
Discussion related to everything about model railroading, from layout design and planning, to reviews of related model tools and equipment. Discussion includes O, S, HO, N and Z, as well as narrow gauge topics. Also includes discussion of traditional "toy train" and "collector" topics such as Lionel, American Flyer, Marx, and others. Also includes discussion of outdoor garden railways and live steamers.

Moderators: 3rdrail, stilson4283, Otto Vondrak

  by Statkowski
 
This may not interest many people, but an Australian outfit called Modratec (Modratec, PO Box 2205, Graceville, Qld 4075, Australia; Email Address: [email protected]) is now offering a kit with which to build your own custom-designed (you design it) mechanical interlocking for your model railroad. It includes electrical connections for signals, switch machines, etc., and the price is quite reasonable (which is geared to the complexity of the interlocking).

Key to the mechanical interlocking design is a computer program called SigScribe4 (which you can download), which creates the actual mechanical design for your interlocking (one line crossing a line, etc.).

The down side? It's based on a British-style Controlled Manual Block System (most American railroads were busy converting their CMB interlockings to Automatic Block System operations circa 1905. All the signals are on the left side (British left-hand running, you know), and are British style. But, with some imagination and forethought it can be made into something more of an American style.

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It's something not everyone on your block will have. You can reach their web site at http://modratec.com.
  by Statkowski
 
I just whipped up a single diamond crossing of two single-track lines. Included in the twelve-lever interlocking were four home signals, four approach signals, and two sets of split-rail derails protecting the diamond.

Basic cost for the interlocking machine in current American dollars came out to $55.86 (AUS $77.00). Additional electrical switch connections would have bumped up the price $15.23 (AUS $21.00) more.

Total cost, not including shipping, just over $81.00 !