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Record: 71951 (21/04/2026)
(Free MySQL Counter)

GNR/LNER Gresley "K2" Class 2-6-0


Class Types
GNR Class H3
LNER Class K2

General
Designer Sir Nigel Gresley
Introduced 1913
Pre-Grouping Company Great Northern Railway
Grouping Company London and North Eastern Railway
Description (1957) Class K2. Gresley 5'8" 2-cylinder 2-6-0's, built 1912-21. Since 1925 a number of the class have been transferred to Scotland and received side-window cabs, most of them at the same time being named after Lochs. Scrapping commenced 1955.
Wheel Arrangement 2-6-0
Number Built as K2 65
First in Service 04/1914
Last in Service 22/06/1962
Manufacturers
ManufacturerTotal
Doncaster Works 30
Kitson 25
North British Locomotive Company, Glasgow 20
Orders
BuilderSponsorOrder #DateSize
Doncaster Works  277 1914 10
Doncaster Works  281 1916 10
North British Locomotive Company, Glasgow (Hyde Park)  L698 1918 10
North British Locomotive Company, Glasgow (Queens Park)  L699 1918 10
Kitson  492T 1921 25

Illustration
Copyright: Unknown - please contact me if you know the copyright holder
Power
K2/1 K2/2
Variant Introduced 1920 1914
Tractive Effort 23,400lbs
As K2/1
Outside Cylinders 20" x 26" (2 off)
As K2/1
Outside Valves 10"Piston
As K2/1
Outside Motion Walschaerts
As K2/1

Wheels
K2/1 K2/2
Pony 3' 2"
As K2/1
Drivers 5' 8"
As K2/1
Locomotive Wheelbase 24' 10" 25' 2"
Tender Wheelbase 13'
As K2/1
Descriptive Wheelbase 8' 11" + 7' 3" + 9' 0" + 9' 3¾" + 7' 0" + 6' 0" = 56' 11½" 8' 11" + 7' 3" + 9' 0" + 9' 5½" + 7' 0" + 6' 0" = 57' 1¼"

Dimensions
K2/1 K2/2
Length (over buffers) 46' 101⁄4"
As K2/1
Weight (in running order) 106t 16cwt
As K2/1
Weight (loco only) 63t 14cwt 64t 8cwt
Adhesive Weight 53t 8cwt 53t 18cwt
Maximum Axle Load 18t 12cwt 18t 16cwt
Water Capacity 3,500gal
As K2/1
Coal Capacity 6t 10cwt
As K2/1

Boiler & Firebox
K2/1 K2/2
Boiler Diagram 3
As K2/1
Boiler Max Diameter 5' 6"
As K2/1
Boiler Barrel Length 11' 111⁄2"
As K2/1
Boiler Pressure 180lbs
As K2/1
Boiler Pitch 8' 81⁄2"
As K2/1
Firebox Length 8' 6"
As K2/1
Firebox Grate Area 24ft2
As K2/1
Firebox Heating Surface 152ft2
As K2/1
Tube Number 197
As K2/1
Tube Diameter 13⁄4"
As K2/1
Tube Area 1082ft2
As K2/1
Flue Elements 24
As K2/1
Flue Diameter 51⁄4"
As K2/1
Flue Area 395.5ft2
As K2/1
Total Evaporative Area 1629.5ft2
As K2/1
Superheater Elements 24
As K2/1
Superheater Element Diameter 11⁄4"
As K2/1
Superheater Element Area 305ft2
As K2/1
Total Heating Area 1934.5ft2
As K2/1