loco-info.com - London & North Western Improved Precedent class

Dimensions and Weights
Service weight	73,360 lbs
Adhesive weight	50,400 lbs
Total weight	129,360 lbs
Axle load	25,760 lbs
Water capacity	2,162 us gal
Fuel capacity	coal

Boiler
Grate area	17 sq ft
Firebox area	103.5 sq ft
Tube heating area	980.5 sq ft
Evaporative heating area	1,084 sq ft
Total heating area	1,084 sq ft

Power Plant
Driver diameter	78 in
Boiler pressure	150 psi
Expansion type	simple
Cylinders	two, 17 x 24 in

Power
Power source	steam
Starting effort	11,338 lbf

Calculated Values
Factor of adhesion	1 : 4.45
Heating Area Equivalent	1,601.5 sq ft
Cylinder volume/HAE	1 : 1200.00
Adhesive weight/Total	1 : 1.46
Tractive force/Heating area	1 : 2351.37
Grate area/Heating area	1 : 57.69
Firebox/Tube area	1 : 9.47

steam locomotive

express

last changed: 09 2023

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