The reference for locomotives and railcars
London & North Eastern class Y10
Great Britain | 1930 | 2 produced
No. 8403 in Stratford works
No. 8403 in Stratford works

The LNER class Y10 consisted of two tank locomotives supplied by Sentinel. A special feature was the gearbox, which could be switched between two speeds while stationary. A vertical water tube boiler was also used, which operated at a high pressure of 275 psi (19 bar) and had short response times.

Their intended area of operation was the Wisbech and Upwell Tramway in East Anglia. For this they received two cabs and cow catchers, which were no longer present in the photo. Since they didn't prove themselves there, they came to Yarmouth the year after they were delivered, where they were used in the harbour. They both came to British Railways, but were withdrawn in 1948 and 1952.

ManufacturerSentinel Waggon Works
Axle config0-4-0T (Four-coupled) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length23 ft 2 1/4 in
Wheelbase6 ft
Fixed wheelbase6 ft
Service weight53,648 lbs
Adhesive weight53,648 lbs
Axle load27,552 lbs
Water capacity721 us gal
Fuel capacity1,344 lbs (coal)
Power sourcesteam
Estimated power200 hp (149 kW)
Optimal speed25 mph
Starting effort11,435 lbf
Power Plant
Driver diameter38 in
Boiler pressure275 psi
Expansion typesimple
Cylindersfour, 6 3/4 x 9 in
Grate area6.5 sq ft
Firebox area51 sq ft
Tube heating area108 sq ft
Evaporative heating area159 sq ft
Superheater area40 sq ft
Total heating area199 sq ft
Calculated Values
steam locomotive
tank locomotive
secondary line
geared steam locomotive
last changed: 03/2024

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