Banner
Navigation

Navigation

loco-info.com
The reference for locomotives and railcars

London & North Western class A

Great Britain 1893 111 produced

Between 1893 and 1900, Francis Webb built 111 class A 0-8-0 goods locomotives for the LNWR. Like earlier Webb compounds with two driving axles they had two small high-pressure cylinders on the outside and one larger low-pressure cylinder on the inside. But unlike these, all four axles of the class A were coupled.

Since Webb's successors Whale and Bowen Cooke wanted to clear the problems of the Webb compounds, they rebuilt the whole class into two-cylinder simple locomotives. So 15 became class C, 62 became class D and 34 became class C1. Most were again rebuilt to class G1 and some of these again to class G2a, with the last ones only being withdrawn in 1962.

Technical data

General

Built
1893-1900
Manufacturers
Crewe
Wheel arrangement
0-8-0 (Eight-coupled)
Gauge
1,435 mm (Standard gauge)

Dimensions and weights

Wheelbase
5.26 m
Service mass
50.8 t
Adhesion mass
50.8 t
Rigid wheelbase
5.26 m
Axle load
14.6 t

Boiler

Grate area
1.905 m²
Firebox surface
10.684 m²
Tube heating surface
138.426 m²
Evaporative heating surface
149.11 m²
Total heating surface
149.1 m²

Power plant

Driver diameter
1,346 mm
Boiler pressure
12.1 bar
Expansion type
compound
Cylinders
three, HP: 381 x 610 mm and LP: 762 x 610 mm

Power

Power source
steam
Estimated power
522 kW (710 PS)
Starting effort
80.9 kN
Starting effort simple
97.1 kN

Calculated values

Factor of adhesion
1 : 6.16
Optimal speed
40 km/h
Power-to-weight ratio
10.3 kW/t
Heating Surface Equivalent
202.5 m²
Cylinder volume/HSE
1 : 1,544.22
Adhesive weight/Total
1 : 1.00
Tractive force/Heating surface
1 : 11.33
Grate area/Heating surface
1 : 78.27
Firebox/Tube surface
1 : 12.96
Auf Deutsch umschalten

Settings

Your settings are retained for this browser session only.

Consent to cookies

We use cookies to save your display settings. If you decline, the settings are retained only for the current browser session.