imported>JJMC89 bot III: Moving :Category:Standard gauge steam locomotives of Great Britain to :Category:Standard-gauge steam locomotives of Great Britain per Wikipedia:Categories for discussion/Speedy

2025-02-08T21:32:54Z

Moving Category:Standard gauge steam locomotives of Great Britain to Category:Standard-gauge steam locomotives of Great Britain per Wikipedia:Categories for discussion/Speedy

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{{Short description|Class of 0-4-0T locomotives}}
{{Use dmy dates|date=March 2017}}
{{Use British English|date=March 2017}}
{{one source|date=December 2014}}
{{Infobox locomotive
|powertype=Steam
|name = LNER Class Y3
|image =
|caption =
|designer = [[Sentinel Waggon Works]]
|builder = [[Sentinel Waggon Works]]
|builddate = 1927-1931
|totalproduction = 32
|whytetype = [[0-4-0]] geared tank
|gauge = {{track gauge|ussg}}
|driverdiameter = {{convert|2|ft|6|in|abbr=on}}
|length =
|locoweight = {{convert|20.8|LT|abbr=on}}
|fueltype = coal
|fuelcap =
|watercap =
|cylindercount = two
|cylindersize = {{convert|6+3/4|x|9|in|abbr=on}}
|firearea =
|boilerpressure = {{convert|275|psi|MPa|abbr=on}} <br /> water tube boiler
|tractiveeffort = see text
|axleloadclass=[[Route Availability]] 1
|operatorclass=
}}

The '''LNER Class Y3''' was a class of [[0-4-0]] [[geared steam locomotive]]s built by [[Sentinel Waggon Works]] for the [[London and North Eastern Railway]] and introduced in 1927. They passed into [[British Railways]] ownership in 1948 and were numbered '''68154-68185'''.<ref>Ian Allan ABC of British Railways Locomotives, 1948 edition, part 4, page 47</ref> At least one was based at Immingham in 1950.{{sfn|Ludlam|2016|p=39}}

== Power unit ==
The [[superheater|superheated]] [[Sentinel boiler|vertical water-tube boiler]] and the [[steam engine|engine]] were similar to those used in Sentinel [[steam wagon]]s. The engines had [[poppet valve]]s and reversing was by sliding [[camshaft]]. The advantage of the water-tube boiler was that steam could be raised much more quickly than with a conventional [[fire-tube boiler]].

==Transmission==
Final drive to the wheels was by [[sprocket|sprocket chain]]. Some locomotives had a sprocket [[gear ratio]] of 19:19 and others 15:19. In addition, there was a two-speed [[Transmission (mechanics)|gearbox]] but gears could only be changed while the locomotive was stationary. Tractive effort was:
* Ratio 19:19, Low gear {{convert|12600|lbf|kN|abbr=on}}, High gear {{convert|4705|lbf|kN|abbr=on}} (68154-68179 and 68184-68185)
* Ratio 15:19, Low gear {{convert|15960|lbf|kN|abbr=on}}, High gear {{convert|5960|lbf|kN|abbr=on}} (68180-68183)

==References==
{{Reflist}}

===Sources===
*{{cite book |last=Ludlam |first=A.J. |title=Immingham - A Lincolnshire Railway Centre (Lincolnshire Railway Centres) |year=2016 |publisher=[[Lincolnshire Wolds Railway|Lincolnshire Wolds Railway Society]] |location=Ludborough, Lincolnshire |isbn=978-0995461000 }}

==External links==
* [http://www.lner.info/locos/Y/y1y3.shtml LNER encyclopedia]

{{LNER Locomotives}}

{{DEFAULTSORT:Lner Class Y03}}
[[Category:Sentinel locomotives]]
[[Category:London and North Eastern Railway locomotives|Y03]]
[[Category:0-4-0T locomotives]]
[[Category:Railway locomotives introduced in 1927]]
[[Category:Scrapped locomotives]]
[[Category:Standard-gauge steam locomotives of Great Britain]]
[[Category:Shunting locomotives]]

LNER Class Y3 - Revision history

imported>JJMC89 bot III: Moving :Category:Standard gauge steam locomotives of Great Britain to :Category:Standard-gauge steam locomotives of Great Britain per Wikipedia:Categories for discussion/Speedy