LMSR/English Electric 350hp 0-6-0 Diesel-Electric
| Class: LMSR Class OF, BR Class DEJ3, later D3/8; 3/8A; TOPS
11 Purpose: General shunting duties Introduced: 1944 Original numbers: (WD) 70260-70273, (LMSR) 7120-7132, M7130/1, 12045-12138 BR numbers: 12033-12138 Total built: 120* |
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Details of Nos 12033-12138: Engine: English Electric 6KT No of cylinders - 6 Max cont rated output: 350hp at 680rpm Main generator: English Electric EE 801 Traction motors: Two English Electric EE 506 Type of suspension: nose Type of gear drive: double reduction Performance: Tractive effort 35,000lb Braking: Air for loco Speed: 20mph Tank capacity: Engine fuel 660gal |
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This wartime design was the outcome of all the trials and tribulations the
LMSR had experienced during their pioneer work on diesel shunting locomotive
design and development. In particular it carried-on the use of the trustworthy
EE Co type 6KT power unit, but it returned to the two-motor, outside-frame
arrangement, in favour of the jackshaft-drive. The reason for this was that
troubles had been experienced with excess stresses on the frames of the
jackshaft-drive locomotives; whilst in the interim a very successful modification
had been applied to EE Co twin-motor No 7074 (as described on page 24) whereby
the use of double reduction gearing and force-ventilated traction motors
had eliminated the problems of overheating. The first locomotive appeared
in 1944, and it was destined to set the basic standard for all that have
followed since for BR use; as well as being adopted by certain overseas railways.
The first order was in fact for WD use, but after 14 of the 20 ordered by
the WD had been built, the final six went instead to the LMSR, who had in
fact designed them for their own use in the first place! This slightly austere-
looking 47.5 ton diesel electric 0-6-0 was to prove so successful that all
told 106 were built by 1952 (four years after nationalisation), including
36 built at Darlington for ER and NER use. In 1946 the LMSR announced it
was to be their standard type of diesel-electric shunter, and BR at first
continued this policy, trying-out a 400hp engine in No 12045, the first one
built under their auspices. This was because R. A. Riddles was evaluating
the EE Co engine for future standard use, perhaps at the higher power rating.
It later reverted to 350hp. Of interest is the fact that the Dutch railways
(NS) tried-out both the jackshaft and the twin-motor versions of the LMSR/WD
shunters, and preferred the twin-motor version, and purchased some secondhand.
They were considered to be extremely successful, and led to further orders
afterwards, direct from the EE Co. Withdrawal of the class commenced in 1967
and the run-down was relatively swift, with the last examples going in 1971,
a combination of loss of freight traffic and the rationalisation of motive
power under the National Traction Plan being largely responsible. A number
survive in other ownerships, and three have been preserved: WD No
70272 on the Lakeside & Haverthwaite Railway; BR No 12077 at the Midland
Railway Centre, Butterley, and BR No 12131 on the North Norfolk Railway,
Sheringham.
*The total for locomotives on BR was 106, the 14 WD examples not going into
BR ownership.
"12049: The Movie " (1.2MB, 22nd June 2005): Tony Wood (#12049 shunts 45-ton steam crane several times its own weight)
| David Couchman contributed his shot of #12049 hauling Bittern (at that stage a 4-0-2) out of the shed on 11th May 2004 |  |
| David Sibley shunts the 9F and A4 Bittern on the Ropley MPD pit road
13th June 2005 |
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| MHR believes this, Ropley MPD's general-purpose shunter, is the earliest Class 11 still in use | |
From: Ian & Sue Douglas
Sent: 22 July 2005 01:55
Subject: 12049 oldest Class 11 in use?
Tony
Just trying to find some details on Dutch NS663 which moved to Meldon on
20/7/05.
Whilst I was browsing other Class 11’s including your 12049 with the unusual
light green livery, I noted the phrase “MHR believes this, Ropley MPD's
general-purpose shunter, is the earliest Class 11 still in use”.
I have on my records Class 11 WD70272-878, (AD601 and 7120) which I believe
was built for the War Dept at Derby in 1945 still in use at the Lakeside
& Haverthwaite Railway. Does this make it older than 12049?
I will be visiting your area at the start of September and look forward to
having a look around your sheds and taking some photos, if that is still
possible? Can you advise me who I need to approach when I arrive to have
a look around and check the details that I have on my database here in Australia
are as close to reality with the actual details?
The other item I would like to mention is that I maintain an enormous database
(including photos) of all UK locos that are still in existence, including
some in Australia that were built in the UK. At the moment I have 12,334
locos and 1,052 locations in the database which is kept on Filemaker Pro
Version 7. I am bringing copies of the database with me to give to any interested
bodies who may have Filemaker Pro 7 on their PC and who may like to
use the information, so that it is not lost when I pass on. If you have anyone
in your organization who may be interested, just let me know and I’ll organize
a CD copy for them.
Thanks for now, see you in September.
Ian & Sue Douglas
Toowoomba
Australia
From: Caledonian Railway
Sent: 14 June 2005 17:39
Subject: Class 11s
Hi Tony
As well as the Class 11s mentioned on your site's 12049 Page, we have
another one at the Caledonian
Railway, Brechin
#12093 acts as the Brechin station pilot, and can be seen operating in typical
Scottish weather in
this photo
Regards
Simon Hickman
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