crossovers with Tortoise switch machines

[Anonymous]

Does anyone know if it's possible to use one Tortoise to throw both switches in a crossover? Any products available? Any articles?

[cacole]

Yes, it can be done using piano wire linkages, but getting them adjusted so they both throw an adequate distance to not cause derailments is not worth the hassle. Spend a few extra bucks and use two separate Tortoise switch machines operated by the same control panel switch. This is one of those areas where an attempt to save money can wind up causing extreme aggravation and frustration.

[Anonymous]

Makes good sense. Rigging piano wire seems timely. Thanks much

[dehusman]

The way to do it would be to use linkages like they use with airplance controls.

The linkage would involve one long control rod, two L shaped links and two short rods to the throwbars.
The Tortise would be mounted so the action is parallel with the tracks. The main control rod would also run parallel to the tracks. Directly across from the throwbars on the switches would be the L links. The pivot point of the L will be between the control rod and the switch. One leg would be attached to the main control rod and the other to the rod to the throw bar. As the main control rod is moved east-west, the linkages make the two short rod move north-south exactly the same amount. Support the rods with eye screws.
the major drawback is the amount of real estate required under the layout to arrange all the hardware.

Dave H.

[nfmisso]

It is practical, and relatively easy to do. On Tortise can easily handle all four turnouts in a double cross over. The material cost for the linkages is less than $5, saving over $35 for a double crossover. Same thing applies to yard ladders.