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K1: 61.7 long tons (62.7 t; 69.1 short tons) K2: 64.4 long tons (65.4 t; 72.1 short tons)
Fuel type
Coal
Firebox:
• Grate area
K1: 24.5 sq ft (2.28 m2) K2: 24 sq ft (2.2 m2)
Boiler pressure
180 psi (1.24 MPa)
Cylinders
Two
Cylinder size
20 in × 26 in (508 mm × 660 mm)
Performance figures
Tractive effort
23,400 lbf (104.1 kN)
Career
Operators
Great Northern Railway, London and North Eastern Railway, British Railways
Class
GNR: H2 and H3 LNER: K1 and K2
Numbers
GNR: 1630–1704
LNER (1923): 4630-4704
LNER (1946): 1720–1794
BR: 61720–61794
Nicknames
Ragtimers
Withdrawn
1955–1962
Disposition
All scrapped
The Great Northern Railway Class H2 and H3 (classified K1 and K2 by the LNER) was a class of 2-6-0 steam locomotive designed for mixed-traffic work.
The class was created as a locomotive which could haul heavier goods trains at speeds of up to 40 mph. The class were later developed into the more powerful H4 (LNER K3) class. After formation of the London and North Eastern Railway, the type became known as class K1 and K2 and was adopted as an LNER standard design. They got the nickname "Ragtimers" because of their lively nature when running at speed and their use of Walschaerts valve gear which was uncommon on the GNR at the time.[1]
^"The Gresley K1 and K2 2-6-0 Moguls". LNER.info. Retrieved 2 February 2019.
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