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[quote]QUOTE: Originally posted by ptt100 No way a steam locomotive could develop that much TE. It just would be impossible. It is a simple matter of adhesion. Using an advanced steam design would have no effect on the adhesion. The sole reason a diesel electric can develop so much tractive effort in relationship to its total weight IS because it has electric motors. [/quote] Not Impossible, there are advances in steam that would allow for higher TE without making the thing super big or cumbersome as you are imagining. Everyones thinking in terms of 1950's steam, big, cumbersome and not very efficiant. in the last 60 years there's been advances in almost every aspect of mechanical engineering, and many of the new advances could be applied tio a steam locomotive that can produce a very high TE, possibly retaining the size of a modern deisel and just as powerful, if not more powerful. Another advantage of using a modern Steam Loco, using the electrical generator method I mentioned above, is fuel costs. a deisel is consumming mass amounts to keep those large generators going, where-as the steam ones could burn relatively little to heat the water, thus the overall fuel ratio could be an advantage in itself. Jay
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