BRITISH RAIL CLASS 11

'BR Class 11'
TOPS numbers	None
Early numbers	12033-12138 (see notes)
Builder	LMS/BR Derby & BR Darlington
Introduced	1945-52
Wheel Arrangement	0-6-0
Weight	47 t 5 cwt	48,000 kg
Height	12 ft 5 1/2 in	3.80 m
Width	8 ft 5 in	2.57 m
Length	29 ft 1 1/2 in	8.88 m
Wheel Dia.	4 ft 0 1/2 in	1.23 m
Wheel Base	5 ft 9 in + 5 ft 9 in	1.75 m + 1.57 m
Minimum radius	3.5 chains	70.4 m
Maximum speed	20 mph	32 km/h
Engine output	350 hp at 680 rpm	260 kW
Max. Tractive Effort	34,900 lbf later given as 33,500 lbf by BR	155 kN 149 kN
Cont. Tractive Effort
Brake type	Vacuum
Brake force	32.73 te	326 kN
Route availability	5
Fuel Tank	660 imp gal	3,000 litre
Heating type	None

The British Rail 'Class 11' was applied to a batch of locomotives built from April 1945 to December 1952, based on a similar earlier batch.

Contents

Overview

Preservation

Overview

LMS numbers 7120-7125 went to the War Department and then into LMS stock. LMS numbers 7126-7129 went straight into LMS stock, with 7129 being the last diesel shunter to be built for the LMS. British Railways continued to build the class from 1948-1952, being numbered M7130/1 and 12045-12138. 7020-7129, M7130 & M7131 became BR numbers 12033-12042. The whole class of 12033-12138 became Class 11. Locomotives up to 12102 were built at LMS/BR Derby and 12103-12138 at BR Darlington.
Close to 100 almost identical machines were built by English Electric & supplied to the Nederlandse Spoorwegen (NS) as their 500 Class & 600 Class diesel locomotives. Sixty-five of the 600 Class locomotives were built, numbered 601-665. They were built by English Electric between 1950-1957 at either Dick, Kerr & Co. Works (601-610) in Preston, or Vulcan Foundry Works (rest) in Newton-le-Willows.
The engine is an English Electric 6-cyl, 10 in bore by 12 in stroke (254 by 305 mm); 4-stroke, 6KT and the traction motors are 2 x EE506 axle-hung, nose-suspended, force-ventilated traction motors with 21.7:1 double reduction gear drive. The Main Generator is an English Electric EE801, 441 A at 430 V.
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Preservation

★ Today Ten Class 11 Diesel Shunters have been Preserved.

★ 12049

★ 12052

★ 12061

★ 12077

★ 12082

★ 12083

★ 12093

★ 12098

★ 12099

★ 12131
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