by george matthews
David Benton wrote:Interesting article. I don't think double stack is the way to go though, The need is for speed , and the double tacks have terrible aerodynamics. Could be improved no doubt, but it also restricts the routes they can take in Europe.Once again the problem is change of gauge. Whereas it is not a problem to lift single stacks from one train across to another, as is done at present at gauge change points, it would be more complicated to shift a double stack. And in any case double stack is really only found in America where there are few over the track bridges. In Europe there are many bridges and tunnels too, all of them limited in height to one stack.