loco-info.com - Imperial-Royal State Railways class 380

Dimensions and Weights
Length	59 ft 1 9/16 in
Wheelbase	16 ft 5 1/4 in
Rigid wheelbase	28 ft 5 5/16 in
Total wheelbase	48 ft 8 5/16 in
Empty weight	159,835 lbs	160,717 lbs
Service weight	177,251 lbs	178,795 lbs
Adhesive weight	154,323 lbs
Water capacity	5,548 us gal
Fuel capacity	11,023 lbs (coal)	1,981 us gal (coal)

Boiler
Grate area	49.5 sq ft
Firebox area	166.8 sq ft
Tube heating area	1,890.1 sq ft
Evaporative heating area	2,057 sq ft
Superheater area	531.7 sq ft
Total heating area	2,588.7 sq ft

Variant	380.0	380.100

Power Plant
Driver diameter	55.5 in
Boiler pressure	232 psi
Expansion type	compound
Cylinders	four, HP: 15 3/8 x 28 3/8 in and LP: 24 13/16 x 28 3/8 in

Power
Power source	steam
Indicated power	1,623 hp (1,210 kW)
Optimal speed	30 mph
Top speed	43 mph
Starting effort	34,339 lbf
with start valve	41,207 lbf

Calculated Values
Factor of adhesion	1 : 3.75
Power-to-weight ratio	0.0092 hp/lb	0.0091 hp/lb
Heating Area Equivalent	3,954.7 sq ft
Cylinder volume/HAE	1 : 1079.06
Adhesive weight/Total	1 : 1.15	1 : 1.16
Tractive force/Heating area	1 : 3578.47
Grate area/Heating area	1 : 48.91
Firebox/Tube area	1 : 14.52
Total/Superheater	1 : 3.87
HP/LP cylinders	1 : 2.61

steam locomotive

express

Von Borries compound

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