Please stay isolated. Things won't get back to normal until we have beaten the virus and the only way to do that, is to prevent it from spreading.


Martinez type contact

On my old layout, I needed to add some sensors in a hidden area that was very unaccessible.

This is how I planned on adding an s88 contact point as needed in hidden areas of the layout. The advantage was that I could simply glue the assembly down next to the track without having to lift track, cut rails and relay the track.

A big disadvantage was that track cleaning devices were likely to destroy the switch or get hung up on them.

Antonio Martinez has a much simpler technique using aluminium foil.  I am abandoning my experiment and have started my first Martinez type contact. I stuck a length of packaging tape on one side of some foil (thus insulating one side), then cut it out with a tail of bare foil that I twisted and fastened into a Märklin socket for easy connection to the s88 lead. Here it is, insulated side up.

I can them simply pin it down over one side of the rail so that it cannot touch the center studs and covers one running rail. If it wears out I can easily make another to replace it.

Update: These tin foil switches worked without any problems for over 9 years. Even then they did not fail, they were taken out of service as I dismantled the layout.