https://blog.model-train-help.com/2010/11/hot-trains.html?utm_source=rss&utm_medium=rss&utm_campaign=hot-trains Model railroads and model trains Tue, 20 Nov 2012 06:01:30 +0000 hourly 1 https://wordpress.org/?v=6.9.4 https://blog.model-train-help.com/2010/11/hot-trains.html#comment-939 Sun, 21 Nov 2010 22:59:57 +0000 http://68.171.208.138/~blogmode/2010/11/hot-trains.html#comment-939 I am building a HO system outside ( I know you not supposed to do this) I’ve calculated the expansion from -10C to +40C, works out you have to allow expansion of 1/6″ per 100″. I think its better to use the usual track joiners and electically join the segments by soldering a wire, rather than soldering the joints

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