Here's a reliable scheme for controlling unmodified switch points with pneumatics. This scheme is for use on track that is raised up off the baseplate in modules. I have reduced the depth required below the track to a minimum of 9 plates in the (...) (19 years ago, 19-Oct-05, to lugnet.trains, lugnet.technic, lugnet.loc.uk, lugnet.build, lugnet.announce.moc) !
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