Third Rail (model Rail)
The use of a third rail in rail transport modelling is a technique that was once applied, in order to facilitate easier wiring. Early train sets Pre-war train sets from makers such as Hornby were almost entirely O gauge, either clockwork or electric, with the electric sets using a three rail system. Both the track and rolling stock were made from pressed, lithographed tinplate, with a few pieces of die-cast zinc or turned brass. The third rail was insulated from the tinplate sleepers by insulating fibre washers. Post-war, there was a shift from O gauge to half-size scales of HO and OO. Improved technology at this time, particularly for moulded plastic components, made two-rail electrification practical. Many of the new generation of scenic railway modellers scratch-built their new locomotives for two-rail, although this was far from universally accepted. Most of the commercial train set makers continued with three-rail systems for some time. Difficulties of two-rail Usi ...
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