The
British Rail Class
11 was applied to a batch of
diesel shunting
locomotives built from April 1945 to December 1952, based on
a similar earlier batch
built by the
London, Midland and
Scottish Railway (LMS) between 1939 and 1942.
Overview
Numbering
The fourteen locomotives were built for the
War Department, with the
first ten subsequently going the
Nederlandse Spoorwegen as NS 501–510.
LMS numbers 7120–7129 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 to 1952, using numbers
M7130–M7131 and 12045–12138. 7120–7129 and M7130–M7131 became BR
numbers 12033–12044. 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.
Export locomotives
Close to 100 almost identical machines were built by English
Electric and supplied to
Nederlandse Spoorwegen (NS) as their
500 Class &
600 Class diesel
locomotives. Sixty-five of the 600 Class locomotives were built
by
English Electric between
1950 and
1957, numbered
601–665, at either
Dick, Kerr &
Co. Works (601–610) in Preston
or Vulcan Foundry
Works (remainder) in Newton-le-Willows
.
Another export order was to
Australia,
with 16 locomotives built for use on broad gauge in 1951.
Victorian Railways bought ten as the
F class, while
six were bought by the
State Electricity
Commission of Victoria.
Technical details
The
diesel engine is an English
Electric 6-cylinder, 10-inch bore by 12-inch stroke (254 mm by
305 mm); 4-stroke, 6KT and the
traction motors are two: 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.
Post-BR use
The following locomotives are, or were, at
Harry Needle Railroad Company
(HNRC):
- 12074 Scrapped
- 12082 Operational. It has been re-registered as 01553, in
TOPS Class 01/5. It carries
both numbers
- 12088 Operational
- 12098 Scrapped
Preservation
The following Class 11 diesel shunters are preserved:
See also
References