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The word "train" is superfluous there.

Not sure what you mean by "better", but from a purely engineering perspective the diesel is much more efficient, i.e. it uses a lot less fuel to generate a given power output. Although the steam locomotive has very different torque characteristics it is not as powerful as an equivalent-service diesel locomotive.

The diesel can also be turned off at the end of the run. A steam locomotive burns coal or oil all the time it is ready for service, and needs two "fuels": the fuel itself and prodigious amounts of clean water.

Operationally, the steam locomotive is labour-intensive and however much we may romanticise the machine, much of that labour is heavy, grubby and unpleasant. It takes two skilled men to operate it, plus a team of shed-men on preparation, disposal, cleaning & maintenance. The diesel loco needs only one man (or woman) in the cab - a nice, comfy, clean cab at that - and far fewer "support staff".

Both types are polluting, though that from a well-maintained steam locomotive in the hands of a good fireman and driver, and running properly on good-quality coal, is fairly low. It can present a fire hazard in some situations though. The bigger problem is when a steam locomotive is fired up from cold, since the natural draught in its chimney is too low to allow proper combustion so it emits a lot of mucky, sulphurous smoke.

Where the steam locomotive does score over the diesel or electric is its comparative simplicity that means if it breaks down in service, it may be possible to nurse it to the nearest suitable station whereas the diesel loco is stuck.

There is also a political point that the steam locomotive's fuel comes from potentially problematical sources whereas coal is more widely available.

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12y ago

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