LMS Stanier 2-6-2T

LMS Stanier 2-6-2T

Infobox Locomotive
powertype=Steam
name = LMS Stanier 2-6-2T


caption = 40096 stored at Mansfield, August 1959.
designer = William Stanier
builder = LMS Derby Works (114)
LMS Crewe Works (25)
builddate = 1935-1938
totalproduction = 139
whytetype = 2-6-2T
uicclass = 1'C1'ht
gauge = RailGauge|ussg
leadingsize = convert|39.5|in|m|3|abbr=on
driversize = convert|63|in|m|3|abbr=on
trailingsize = convert|39.5|in|m|3|abbr=on
length = 41 ft 11¾ in
wheelbase = convert|33.25|ft|m|2|abbr=on
weight = convert|70.75|LT|t|1 (6 boiler)
convert|71.25|LT|t|1 (6A boiler)
convert|72.5|LT|t |1 (6B boiler)
fueltype = Coal
fuelc
convert|3|LT|t|1
waterc
convert|1500|impgal|l|abbr=on|lk=on
cylindercount = Two, outside
cylindersize = 17½×26 in (445×660 mm)
valvegear= Walschaerts, piston valves
boiler = LMS type 6 (71–144)
LMS type 6A (145–209)
LMS type 6B (6 off)
tubearea=convert|775|sqft|abbr=on (71–120)
convert|859|sqft|abbr=on (121–144)
convert|939|sqft|abbr=on (6A boiler)
convert|997|sqft|abbr=on (6B boiler)
superheaterarea=convert|73|sqft|abbr=on to convert|76|sqft|abbr=on (6 boiler)
convert|74|sqft|abbr=on to convert|80|sqft|abbr=on (6A boiler)
convert|138|sqft|abbr=on to convert|137|sqft|abbr=on (6B boiler)
fireboxarea=convert|104|sqft|abbr=on (71–120)
convert|107|sqft|abbr=on (121–144)
convert|107|sqft|abbr=on (6A boiler)
convert|111|sqft|abbr=on (6B boiler)
firearea = convert|17.5|sqft|abbr=on (71–120)
convert|19.25|sqft|abbr=on (121–144)
convert|19.25|sqft|abbr=on (6A & 6B boilers)
boilerpressure = convert|200|psi|MPa|2|abbr=on|lk=on
tractiveeffort = convert|21485|lbf|kN|2|abbr=on
railroadclass=LMS: 3P
BR: 3MT
retiredate = 1959–1962
roadnumber = LMS: 71–209
BR: 40071–40209
disposition = All scrapped The Stanier 2-6-2T was a class of London, Midland and Scottish Railway (LMS) steam locomotive. They were designed by William Stanier based on the earlier LMS Fowler 2-6-2T.

Overview

A taper-boiler versions of Henry Fowler's 1930 design, the general dimensions were the same with some improvements. They were under-boilered and although improved they were always considered to be indifferent performers. In some ways they were inferior to their predecessors. The cab was of Stanier’s usual excellent design with the coal bunker built higher than the rear cab windows but angled inwards to avoid them, thus giving good visibility when running bunker first.

The first 2 lots (71 – 144) were built with number 6 domeless boilers but the rest were built with improved 6A boilers with separate top-feed and steam dome. Both types of boilers were later modified to carry Adams ‘Vortex’ blastpipe to improve steaming. These locomotives could always be identified by the larger diameter chimney. The 139 locomotives were numbered 71-209 by the LMS, and after 1948 BR renumbered them 40071-209. The LMS classified them 3P.

In a final attempt to improve the locomotives 6 were rebuilt with larger 6B boilers; these were 169 in 1940, 163 in 1941, 148 and 203 in 1941, and 40142 and 40167 in 1956. The re-boilering was not considered to be cost effective.

They were to be found on various duties – stopping train, suburban passenger routes, branch line, empty stock and banking.

They are generally considered to be the least successful of Stanier’s standard designs

Technical

* Power Classification: 3P, reclassified 3MT in 1948
* Introduced: 1935–1938
* Designer: William Stanier
* Weights: – 70 t 15 cwt (6 boiler); 71 t 5 cwt (6A boiler), 72t 10cwt (6B boiler)
* Driving Wheel: 5' 3"
* Boiler pressure: 200psi superheated
* Cylinders (2): 17½" x 26" (Outside)
* Water: 1,500 gal
* Coal: 3 Tons
* Tractive Effort: convert|21485|lbf|abbr=on
* Valve Gear: Walschaert (piston valves)

Detail

Withdrawals

First of class: Small boiler – (10 locos) – Nov. 1959Large boiler – 40163 – Nov. 1959

Last of class: Small boiler – 40196 – Dec. 1962Large boiler – 40148 – Sep. 1962

None have survived.

References

* Brian Haresnape “Stanier Locomotives – a pictorial history” Ian Allan , 1970
* Hugh Longworth "British Railway Steam Locomotives 1948-1968" - OPC - ISBN 0-86093-593-0
*

External links

* http://www.railuk.co.uk/steam/getsteamclass.php?item=3P-B


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