Narrow Gauge Tank Locomotive

Class 99.77 (2-10-2)

total weight in service order

55.0 metric tons
coal 3.6 metric tons
water 5.8 m³/ 1,281 imp. gal.
boiler pressure 14,0 bar / 203 psi
normal steaming capacity 5,000 kgs/hr / 11,813 lbs/hr
normal indicated HP 500
cylinder bore 450 mm / 17 3/4 in
cylinder stroke 400 mm / 15 3/4 in
driving wheel diameter 800 mm / 2 ft 7 1/2 in
normal max. speed 30 kph / 19 mph
introduced 1952
gauge 750 mm / 2 ft 5 1/2 in

This locomotive is capable of hauling passenger trains of 135 tons at 30 kph (19 mph) on a gradient of 1 in 50.

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