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I have one of those dinosaurs . Bought the turntable and fully automatic preselector in the early 1990s. I only took it for a test drive (um, turn) and never installed it anywhere. At leastI think I have it on the bottom of one of the boxes in my stash. I did contemplate selling it on ebay (after buying the Walthers TT), but I now don't recall if I did that. Anyways, going from memory, this is a design going back to early 70s and it has no electronics in it whatsoever. The operation is purely mechanical: motor, gears, switches, solenoids and all sorts of contacts. Detection is doen by metal wipers contacting metal strips placed around the perimeter of the pit. It was fun to watch it automatically travel to the track I selected (with the bridge position indicator in the preselector moving along with the actual bridge showing its real-time position). Quite an impressive feat for a mechanical device.IIRC, the track power is totally isolated from the rotating mechanism so there is no worry DCC causing any problems. Also IIRC the bridge polarity is automatically switched after it rotates 180 degrees so you probably won't need an auto reverser.Other than that, I remember it being very noisy. I don't know where one would go for things like additional tracks as I think these are long out of production. Maybe some hobby store in Germany would still have some old stock?
Arnold Rapido Self-Indexing Turntables & Controllers.These turntables for their time ran flawless, great track lineup, reliable, but as mentioned, very noisy.I've been collecting all Arnold specialty track section boxs as well as their switchs, flex track, Roundhouses as well as their turntables & controllers since they first appeared.Extra turntable track entrance sections were sold four to a box with the metal wipers.If you decide to use the Arnold, I should have some extra good used turntable entrance track sections w/metal wipers.Don't know about using DCC with them, as i've always been DC only.Ernie