Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 446
less than the high speed under similar average working conditions. Where fuel is expensive, and where the other limiting conditions mentioned above do not prevent, the low-speed engine should therefore be adopted. There are, however, two important points which must be considered in this connection.… … loss is from 7 to 10 per cent, of the total, while with the shafting system it is usually from 20 to 25 per cent., and if the shaft is out of line, may be much more. It thus appears, therefore, that a large part of the superior economy of the low-speed engine is offset by the increased friction…
Engineering
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