LNER Class Y10

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LNER Class Y10
Push-me Pull-you (8523996773).jpg
Model of a Y10
Type and origin
Power typeSteam
Designer Sentinel Waggon Works
BuilderSentinel Waggon Works
Build date1930
Total produced2 (for LNER)
Specifications
Configuration:
   Whyte 0-4-0T
Gauge 4 ft 8+12 in (1,435 mm)
Driver dia.3 ft 2 in (0.965 m)
Wheelbase 6 ft 0 in (1.83 m)
Length23 ft 2+14 in (7.07 m) over buffers
Axle load 12.3 long tons (12.5 t; 13.8 short tons)
Loco weight23.95 long tons (24.33 t; 26.82 short tons)
Fuel typeCoal
Fuel capacity12 long hundredweight (610 kg; 1,300 lb)
Water cap.600 imp gal (2,700 L; 720 US gal)
Firebox:
  Grate area6.5 sq ft (0.60 m2)
Boiler pressure275 psi (1.90 MPa) water tube boiler
Heating surface:
  Firebox51 sq ft (4.7 m2)
  Total surface159 sq ft (14.8 m2)
Superheater:
  Heating area40.0 sq ft (3.72 m2)
Cylinders Four
Cylinder size 6+34 in × 9 in (171 mm × 229 mm)
Valve typeRotary cam & poppet valves
Performance figures
Tractive effort see text
Career
Operators
Axle load class RA 1
Withdrawn1948, 1952
DispositionBoth scrapped

The LNER Class Y10 was a class of two 0-4-0T geared steam locomotives built by Sentinel Waggon Works for the London and North Eastern Railway and introduced in 1930. [1] The LNER numbered them 8403 and 8404 but they were later re-numbered 8186 and 8187. This was the second use of the classification Y10 by the LNER. The first was for an ex-North British Railway 0-4-0 steam tender locomotive, withdrawn 1925. [2]

Contents

Both the Sentinels passed into British Railways ownership in 1948 but 8187 was withdrawn almost immediately. Number 8186 was allocated the BR number 68186, but never actually carried it, and was withdrawn in 1952. [3]

Power unit

The superheated vertical water-tube boiler and the motor were similar to those used in Sentinel steam wagons. Each locomotive had two 2-cylinder engines, giving a total of 200 horsepower (150 kW). The engines had poppet valves 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 and chain. There was a two-speed gearbox but gears could only be changed while the locomotive was stationary. Tractive effort was:

Usage

These locomotives were intended for service on the Wisbech and Upwell Tramway and had several tram engine features. These included cowcatchers and sideplates and a cab at each end, similar to the GER Class C53 locomotives which already worked on the line.

They were not a great success on the Wisbech and Upwell and both were moved to Yarmouth in May 1931 to work the quayside line.

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References

  1. Ian Allan ABC of British Railways Locomotives, 1948 edition, part 4, page 47
  2. "LNER Encyclopedia: The Wheatley Y10".
  3. "LNER Encyclopedia: The Y10 Sentinel D.E.D.G. ('Super Sentinel') Tram".