loco-info.com - Palatinate Railways P 4

Dimensions and Weights
Length	61 ft 4 11/16 in
Wheelbase	28 ft 6 1/2 in
Rigid wheelbase	6 ft 8 11/16 in
Service weight	163,803 lbs
Adhesive weight	72,752 lbs
Total weight	267,861 lbs
Axle load	36,376 lbs
Water capacity	5,283 us gal
Fuel capacity	coal

Boiler
Grate area	40.9 sq ft
Evaporative heating area	1,951.5 sq ft
Superheater area	448.9 sq ft
Total heating area	2,400.4 sq ft	1,951.5 sq ft

Variant	as built	saturated

Power Plant
Driver diameter	79.1 in
Boiler pressure	218 psi
Expansion type	compound
Cylinders	four, HP: 14 3/16 x 25 3/16 in and LP: 23 1/4 x 25 3/16 in

Power
Power source	steam
Estimated power	1,408 hp (1,050 kW)	1,140 hp (850 kW)
Optimal speed	52 mph	42 mph
Top speed	62 mph
Starting effort	17,241 lbf
with start valve	20,689 lbf

Calculated Values
Factor of adhesion	1 : 3.52
Power-to-weight ratio	0.0086 hp/lb	0.0070 hp/lb
Adhesive weight/Total	1 : 2.25
Tractive force/Heating area	1 : 1937.68	1 : 2383.36
Total/Superheater	1 : 4.35
HP/LP cylinders	1 : 2.69

steam locomotive

express

Von Borries compound

last changed: 08 2023

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