LNWR G Class

LNWR G Class

Infobox Locomotive
powertype=Steam
name = LNWR G Class


caption = The preserved G2a class No. 49395, 2 October 2005. It is part of the National Railway Collection.
designer = Charles Bowen-Cooke
builder =
builddate = 1879
totalproduction =
whytetype = 0-8-0
gauge =
leadingsize =
driversize =
length =
weight = 60 tons 15 cwt
fueltype = coal
fuelc

waterc

cylindercount = 2
cylindersize = 20½"x24"
firearea =
boilerpressure = 160 psi
tractiveeffort = 25,640 lb
railroadclass=6F/7F|
The London and North Western Railway (LNWR) G Class along with modifications that made them into G1, G2 and G2a classes, is a class of 0-8-0 steam locomotives designed for heavy freight work. They are known to railway enthusiasts as "Super Ds". This is because a large number of G1 class engines were rebuilt from George Whale class D 0-8-0s. They were Super Ds - super for superheated. The D class existed as such between 1906 and 1937. All this is explained by Willie Yeadon's book [Willie Yeadon "A Compendium of LNWR Locomotives 1912-1964 Part Two Goods Tender Engines," Challenger Publications, April 1996, p69.] .

Overview

The LNWR built eight-coupled locomotives under Webb, Whale, Bowen-Cooke and Beames between 1892 and 1922. The G class were originally introduced in 1906 as modifications of the 4-cylinder compound B Class 0-8-0s by removing their outside cylinders to give a simpler two cylinder layout. From 1912 superheating was introduced and most of the B class were converted into G1 Class, not G Class. The G2 class were new builds with increased boiler pressure from 160lbf/in² to 175psi. Some G1s were converted to G2a classes after their boiler pressure was increased.

After grouping in 1923, they were acquired by the LMS who gave them the power classifications 6F for G1 and 7F for G2 and G2a locomotives. The design of the LMS 7F 0-8-0 (known as the "Austin 7") was derived from the G2 but the former was a poor engine in comparison and the "Super Ds" outlived the "Austin 7s".

Many of the G1, G2 and G2a Class locomotives passed into British Railways (BR) ownership in 1948 and were numbered as follows:

* G1 Class, (98 locos), BR numbers 48892-49384
* G2 Class, (60 locos), BR numbers 49395-49454
* G2a Class, (320 locos), BR numbers 48893-49394

The final four engines in traffic were 48895, 49361, 49407 and 49430. They were withdrawn in December 1964. It is interesting to note that at least two of these engines, 49361 and 49430, were allocated to Northampton shed (2E). There was a farewell railtour 12th December 1964. ["Railway Magazine" March 1965 p179.] The G1 and G2a numbers are intermingled (probably because the G2a is a rebuild of the G1) and there are some gaps in numbering. [cite book|title=Ian Allan ABC of British Railways Locomotives, part 3|date=1948|pages=pp 30-40]

Preservation

One G2a, LMS 9395, BR number 49395, has survived as part of the National Railway Collection and has been returned to working order thanks to a lot of money from Pete Waterman. [cite journal|author=Smith, Ian R.|title=The wheezing 'Super D'|journal=Heritage Railway|volume=3|date=July 1999|pages=66–7]

Dimensions

G1 Class

* LMS/BR Power classification, 6F
* Locomotive weight, 60 tons 15 cwt
** Tender weight, Not known
* Boiler pressure, 160 psi
* Superheater, Yes
* Cylinders, 20½"x24"
* Driving wheel diameter, 4' 5½"
* Tractive effort, 25,640 lb
* Valve gear, Joy (piston valves)

G2 and G2a Classes

* LMS/BR Power classification, 7F
* Locomotive weight, 62 tons 0 cwt
** Tender weight, Not known
* Boiler pressure, 175 psi
* Superheater, Yes
* Cylinders, 20½"x24"
* Driving wheel diameter, 4' 5½"
* Tractive effort, 28,045 lb
* Valve gear, Joy (piston valves)

For terminology, see Steam locomotive components

Models

As of 2008, Bachmann produce a 00 Gauge/4mm model of the G2A, availible in LMS and BR Liveries.

References

External links

* [http://www.lnwrs.org.uk/GoodsLocos/Loco16.php Goods Engines of the LNWR G Class]
* [http://www.railuk.co.uk/steam/getsteamclass.php?item=G1 Rail UK database G1 Class]
* [http://www.railuk.co.uk/steam/getsteamclass.php?item=G2 Rail UK database G2 Class]
* [http://www.railuk.co.uk/steam/getsteamclass.php?item=G2A Rail UK database G2a Class]


Wikimedia Foundation. 2010.

Поможем написать курсовую

Look at other dictionaries:

  • LNWR 380 Class — Infobox Locomotive name=LNWR 380 Class powertype=steam weight=88 tons 0 cwt cylindersize=20½ x24 driversize=4 5½ tractiveeffort=29,815 lb valvegear=Joy (piston valves) railroadclass=7FThe LNWR 380 Class was a class of 0 8 4 steam tank locomotives …   Wikipedia

  • LNWR 1185 Class — The LNWR 1185 Class was a class of 0 8 2 steam tank locomotives designed by Charles Bowen Cooke and introduced in 1911. They passed into LMS ownership in 1923 and 8 survived to British Railways ownership in 1948. British Railways numbers were… …   Wikipedia

  • LNWR 2-2-2 3020 Cornwall — NOTOC NOEDITSECTION Infobox Locomotive powertype=Steam name = Cornwall caption = as rebuilt in 1858 designer = Francis Trevithick (son of Richard Trevithick), rebuilt by Ramsbottom builder = LNWR Crewe builddate = 1847, rebuilt in 1858… …   Wikipedia

  • LNWR Improved Precedent Class — Infobox Locomotive powertype=Steam name = LNWR Improved Precedent Class caption = 790 Hardwicke in steam at the Rainhill Trials 150th anniversary calvacade, 1980. designer = builder = builddate = 1887 1901 totalproduction = whytetype = 2 4 0… …   Wikipedia

  • LNWR electric units — Infobox EMU name = LNWR electric units (LMS 1927 compartment stock) imagesize = 300px caption = LNWR EMU Motor Car at National Railway Museum, York background = #012545 Manufacturer = Metropolitan Cammell Operator = LMS and British Railways… …   Wikipedia

  • LNWR Webb Coal Tank — Infobox Locomotive powertype=Steam name = LNWR Webb Coal Tank caption = The only survivor of its class, No. 1054 in steam at the Rainhill Trials 150th anniversary calvacade, May 1980. designer = builder = builddate = 1881 totalproduction =… …   Wikipedia

  • LNWR 17in Coal Engine — The LNWR 17in Coal Engine was a class of 0 6 0 steam tender engines designed by Francis Webb and introduced in 1873. They were called Coal Engines because they were used for hauling coal trains. LNWR engines were built to last and many of the… …   Wikipedia

  • LMS Royal Scot Class — infobox Locomotive name=LMS Royal Scot Class powertype=steam railroadclass=6P; reclassified 7P in 1951 builder=North British Locomotive Company (6100–6149) London Midland Scottish Railway, Derby works (6150–6169) serialnumber = 23595–23644… …   Wikipedia

  • LMS Class 7F 0-8-0 — Infobox Locomotive name=LMS 7F 0 8 0 powertype=Steam caption=49582 at Aintree September 1960. builder=LMS Crewe Works builddate=1929–1932 whytetype=0 8 0 uicclass=Dh totalproduction=125 gauge=RailGauge|ussg driversize=RailGauge|ussg… …   Wikipedia

  • British Rail Class AM1 — Class AM1 was allocated to the prototype AC electric multiple units, converted from fourth rail DC electric stock in 1952 and used on the Lancaster/Morecambe/Heysham route. This route had been electrified by the Midland Railway at 6.6 kV, 25 Hz… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”