I was asked today, while talking about my Climax Engine.... Is there a formula for determining the width of an engine vs the "gauge" of the railroad?? Especially in narrow Gauge. So you won't put too narrow a track under too wide an engine????? I answered that there are all kinds of standards, but i thought it was an interesting question.. Suppose you wanted to build a railroad with a new gauge. How "narrow" can you go?????