LSWR H16 class

{{Infobox locomotive

|name = LSWR H16 class

|powertype = Steam

|image = Vauxhall Empty stock train from Waterloo geograph-2647595-by-Ben-Brooksbank.jpg

|caption = H16 class 4-6-2T No. 30517 takes an empty stock train from Waterloo through {{stnlnk|Vauxhall}} on Saturday 25 August 1962

|builder = LSWR Eastleigh Works

|builddate = November 1921 – February 1922

|totalproduction = 5

|whytetype = 4-6-2T

|uicclass = 2{{prime}}C1{{prime}} h2tG

|gauge = {{track gauge|ussg}}

|leadingdiameter = {{convert|3|ft|7|in|m|3|abbr=on}}

|driverdiameter = {{convert|5|ft|7|in|m|3|abbr=on}}

|trailingdiameter = {{convert|3|ft|7|in|m|3|abbr=on}}

|length = {{convert|46|ft|0|in|m|2|abbr=on}}

|width = {{convert|9|ft|2|in|m|2|abbr=on}}

|height = {{convert|13|ft|3+1/4|in|m|2|abbr=on}}

|axleload = {{convert|19.8|LT|t}}

|locoweight = {{convert|96.4|LT|t}}

|fueltype = Coal

|fuelcap = {{convert|3.5|LT|abbr=on}}

|watercap = {{convert|2000|impgal|abbr=on}}

|firearea = {{convert|27|sqft|m2|abbr=on}}

|tubesandflues = {{convert|1267|sqft|m2|abbr=on}}

|superheatertype = Eastleigh (later Maunsell)

|superheaterarea = {{convert|231|sqft|m2|abbr=on}}

|fireboxarea = {{convert|139|sqft|m2|abbr=on}}

|boilerpressure = {{convert|180|psi|MPa|2|abbr=on}}

|cylindercount = Two, outside

|cylindersize = {{convert|21|x|28|in|mm|0|abbr=on}}

|tractiveeffort = {{convert|28200|lbf|kN|1|abbr=on}}

|operator = {{ubl|London and South Western Railway|→ Southern Railway|→ British Railways}}

|operatorclass = LSWR / SR: H16

|fleetnumbers = {{ubl|LSWR: 516–520|SR: E516–E520 → 516–520|BR: 30516–30520}}

|powerclass = {{ubl|LSWR/ SR: A|BR: 5F (later 6F)}}

|nicknames = Green Tanks

|withdrawndate = 1962

|disposition = All scrapped

}}

The LSWR H16 class were five 4-6-2T tank locomotives designed by Robert Urie for the London and South Western Railway (LSWR) in 1921–1922. They were the last new design for the LSWR and their only Pacific-type design.

Background

As part of the project to construct a marshalling yard at Feltham in West London, Urie produced two locomotive designs, the G16 "Black Tanks" to shunt the new yard, and the H16 "Green Tanks" to work transfer freights to the London area yards of the other railway companies.{{sfnp|Holcroft|1965|pages= 113, 150 }}{{sfnp|Youldon|2009|pages=91–95}}

Construction history

class="wikitable" style="text-align:center;"

! Year !! Order !! Quantity !! LSWR numbers !! Notes

1921–22

H16

516–520

Livery and numbering

=LSWR and Southern Railway=

When originally built they were numbered 516–520.

On passing to the Southern Railway, they had their LSWR numbers prefixed with an 'E'. The locomotives lost the prefix between 1931 and 1932. Under the new locomotive classification system for constituent companies of the SR,{{sfnp|Holcroft|1965|pages=104–105}} they were classified as G6/7/{{frac|1|1|4}} for Goods, Grade (hauling power), Power and Range (route availability).{{sfnp|Holcroft|1965|pages=104–105, 199}} The Southern Railway painted the H16 class in passenger green paint, rather than goods engine black.{{sfnp|Russell|1991|p=262}}

File:Clapham Junction Ex-LSW 4-6-2T geograph-2647354-by-Ben-Brooksbank.jpg