. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ertsas much power at zero speed as curve A. This may betaken as the best possible rotative effort curve, with theminimum full gear cut-off, as can be obtained with a twocylinder, 90° engine. As one is for 90 per cent and the other for 50 per centcut-off, anything in between these two cut-offs will givea definite rotative effort curve at start which will be bet- April, 1924 RAILWAY AND LOCOMOTIVE ENGINEERING 115 ter than is experienced on full gear cut-off of the conven- of the engine is not a
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ertsas much power at zero speed as curve A. This may betaken as the best possible rotative effort curve, with theminimum full gear cut-off, as can be obtained with a twocylinder, 90° engine. As one is for 90 per cent and the other for 50 per centcut-off, anything in between these two cut-offs will givea definite rotative effort curve at start which will be bet- April, 1924 RAILWAY AND LOCOMOTIVE ENGINEERING 115 ter than is experienced on full gear cut-off of the conven- of the engine is not a limiting factor), by an increase in tional type locomotive, but the very outstanding features the steaming capacity of the boiler. This may involve a about the incorporation of the Booster and limited cut- larger boiler or the application of a feed water heater off into the locomotive shows that, along with obtaining a or other heal conserving factors. Such an addition to the smooth starting locomotive, considering now approx- locomotive will not necessarily increase the weight on h—ac m 42 dE. Chart No. 5 Showing Rotative Effort Curve or Torque Curve of a 27 in. x 30 in. Mikado Type Locomotive with 62in. Driving Wheels—200 Lb. Boiler Pressure—Maximum Cut-off 90% of Stroke
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
