Peking-Mukden 2-8-0 Locomotives in China


Class Details by Steve Llanso of Sweat House Media

Class 158 (Locobase 14647)

Data from DeGolyer, Vol 60, pp. 260. Julean Arnold, Commercial Handbook of China, Volume I, Miscellaneous Series-No 84 (Washington, DC: Government Printing Office, 1919). Works numbers were 42556-42558 in October 1915.

Altogether, Baldwin would supply nineteen Consolidations with 19" x 26" cylinders. The first three had saturated boilers and are shown in this entry. Almost five years later, Baldwin would supply the superheated variant shown in Locobase 14643.


Class 161 (Locobase 14643)

Data from DeGolyer, Volume 60, pp. 264. Works numbers were 52821, 52844-52845,52862-52863, 52909-52910, 52941 in January 1920; 53548, 53580-53581 in August; 53635-53637, 53641-53642 in September.

These small, superheated Consolidations were derived from the saturated-boiler design shown in Locobase 14647. 98 small tubes were sacrificed for 19 flues carrying a moderate amount of superheater.

Because they operated on 60 lb/yard (30 kg/metre) rails, the axle load given in the specs was intended to be a maximum. In fact, "every effort" was to be made to keep the loading below 30,000 lb.

The engines came painted according to a freight standard of all black, but the face of the front bumper and the rear face of the tender's back bumper were to be "signal red."


Class 28 (Locobase 14644)

Data from DeGolyer, Vol 60, pp. 276. Works numbers were 41466-41467 in June 1914.

Principal Dimensions by Steve Llanso of Sweat House Media

Class15816128
Locobase ID14647 14643 14644
RailroadPeking-MukdenPeking-MukdenPeking-Mukden
CountryChinaChinaChina
Whyte2-8-02-8-02-8-0
Number in Class3162
Road Numbers158-160161-17628-29
GaugeStdStdStd
Number Built3162
BuilderBaldwinBaldwinBaldwin
Year191519201914
Valve GearWalschaertWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)16 / 4.8816 / 4.8816 / 4.88
Engine Wheelbase (ft / m)24.25 / 7.3924.25 / 7.3924.42 / 7.44
Ratio of driving wheelbase to overall engine wheelbase 0.66 0.66 0.66
Overall Wheelbase (engine & tender) (ft / m)54.54 / 16.6252.58 / 16.03
Axle Loading (Maximum Weight per Axle) (lbs / kg)29,120 / 13,20930,240 / 13,717
Weight on Drivers (lbs / kg)116,000 / 52,617120,000 / 54,431124,000 / 56,246
Engine Weight (lbs / kg)134,000 / 60,781136,500 / 61,915143,000 / 64,864
Tender Loaded Weight (lbs / kg)115,000 / 52,16380,000 / 36,287
Total Engine and Tender Weight (lbs / kg)251,500 / 114,078223,000 / 101,151
Tender Water Capacity (gals / ML)6000 / 22.734000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 9.50 / 96 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)48 / 2450 / 2552 / 26
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)54 / 137254 / 137254 / 1372
Boiler Pressure (psi / kPa)180 / 12.40180 / 12.40180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)19" x 26" / 483x66019" x 26" / 483x66020" x 26" / 508x660
Tractive Effort (lbs / kg)26,594 / 12062.8526,594 / 12062.8529,467 / 13366.02
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.36 4.51 4.21
Heating Ability
Tubes (number - dia) (in / mm)222 - 2" / 51120 - 2" / 51150 - 2" / 51
Flues (number - dia) (in / mm)19 - 5.375" / 13721 - 5.375" / 137
Flue/Tube length (ft / m)13 / 3.9613 / 3.9613 / 3.96
Firebox Area (sq ft / m2)139 / 12.91137 / 12.73156 / 14.49
Grate Area (sq ft / m2)27.60 / 2.5627.60 / 2.5631.70 / 2.95
Evaporative Heating Surface (sq ft / m2)1640 / 152.361293 / 120.121553 / 144.28
Superheating Surface (sq ft / m2)267 / 24.80317 / 29.45
Combined Heating Surface (sq ft / m2)1640 / 152.361560 / 144.921870 / 173.73
Evaporative Heating Surface/Cylinder Volume192.21151.55164.27
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation496849685706
Same as above plus superheater percentage496858136676
Same as above but substitute firebox area for grate area25,02028,85232,854
Power L1443383188887
Power MT337.00611.27632.01

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