>In article <6hmh0e$ckl$1@mirv.unsw.edu.au>,
> G.Lambert@unsw.edu.au (Geoff Lambert) wrote:
>>
>> dbromage@metz.une.edu.au (David Bromage) wrote:
>>
>> >As speed increases for diesel and electroc locos, the tractive effort
>> >decreases. For steam, it increases with speed.
>>
>> Such a thing bids fair to lead to perpetual motion, a wonderful
>> concept, but one which does not hold. See my previous answer.
>> Geoff Lambert
>>
>I was under the impression that a Steam Locomotive's T.E. dropped and its
>H.P. increased as speed increased until a maximum was reached (in modern
>designs) at approx 40 - 50 m.p.h.
Um, yes, isn't that what I said?.... if not in that post, then in the
previous long-winded one.
>Wendy, for some interesting information, try e-mailing Daniel an
>dsdawdy@mcs.com and ask for his information on Baldwin #60000. It contains
>test information etc that is probably just what you want.
Try:
http://www.rrhistorical-2.com/cwrr/Parlor/baldwin/baldwin.html
This an extract of Lawford Fry's 1924 book on this engine. There are
probably better places to find generic information on traction
characteristics, such as Wes Barris's page:
http://www.arc.umn.edu/~wes/misc/largest.html
Numerous text books and journals contain discussions of some value,
say (a small selection):
Ransome-Wallis: Encyclopaedia of World Locomotives
Bruce: The steam locomotive in America
Diamond, E. L., The horse-power of locomotives. Its calculation and
measurement, Monthly Bulletin of the International Railway Congress
Association (1936) 150-189.
Diamond, E. L., The development of locomotive power at speed,
Proceedings of the Institution of Mechanical Engineers, 156 (1947)
404-443.
Nakamura, R., On the calculation of drawbar pull of steam locomotives,
Tokyo, 1931.
Phillipson, E. A., Steam locomotive design: data and formulae,
Locomotive Publishing Co., London, 1936, 444 pp.
Poultney, E. C., Steam locomotion. The construction, working
principles and practical operation of steam locomotives, Caxton
Publishing Company, London, 1951, viii+329+vi+333 pp.