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Record: 10235 (26/09/2023)
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GCR/LNER Robinson "J11" Class 0-6-0 - 'Pom-Pom'


Class Types
GCR Class 9J
LNER Class J11
(Also known as) Pom-Pom (Named after the sharp bark of their exhaust which was reminiscent of the sound of the quick-firing gun of that name used in the Boer War.)

General
Designer John Robinson
Introduced 1901
Pre-Grouping Company Great Central Railway
Grouping Company London and North Eastern Railway
Description (1957) Classes J11 and J11/3. Great Central Robinson 5'1" 0-6-0's, built between 1901 and 1910, some of the class being superheated. All the class were in service until 1954, but many have been withdrawn since. Class J11/3 (rebuilt from class J11) have long travel piston valves and higher pitched boilers. Thirty-two of class J11 were so rebuilt between 1942 and 1954.
Wheel Arrangement 0-6-0
Number Built as J11 174
First in Service 09/1901
Last in Service 21/10/1962
Manufacturers
ManufacturerTotal
Gorton Works 71
Neilson, Reid & Co. 49
Beyer Peacock Ltd. 25
Vulcan Foundry 15
Yorkshire Engine Company 15
Orders
BuilderSponsorOrder #DateSize
Neilson, Reid & Co.  n/a 1901 40
Neilson, Reid & Co.  n/a 1902 9
Beyer Peacock Ltd.  n/a 1903 10
Gorton Works  n/a 1903 12
Beyer Peacock Ltd.  n/a 1904 15
Vulcan Foundry  n/a 1904 15
Yorkshire Engine Company  n/a 1904 5
Yorkshire Engine Company  n/a 1905 5
Gorton Works  n/a 1906 48
Yorkshire Engine Company  n/a 1906 5
Gorton Works  n/a 1909 1
Gorton Works  n/a 1910 9
Classification Southern Area 3
Route Availability 5
BR Power Class 3F
Engine Diagrams
DiagramDetails
Section C, 1924 Part 1. Engines with 3,250 gallon tenders. Both saturated and superheated.
Section C, 1924 Part 2. Engines with 4,000 gallon tenders. Both saturated and superheated.
Section C, 1924 Engine 16. Superheated with piston valves, 20in. cylinders and 4,000 gallon tender.
Section C, 1924 Engine 134. Saturated large-boilered rebuild from class J10.
Section C, 1925 Part 3. Engine 16 reclassified. Amended weights and front overhang reduced.
Section C, 1926 Engines with 3,250 gallon tenders. Became Part 1 in December 1927 (to G.C. gauge). Boiler dimensions amended December 1938 and again December 1948. Chimneys shown as 12ft. 11¾in. by December 1941, but domes remained 13ft. 2in.
Section C, 1926 Engines with 4,000 gallon tenders. Became Part 2 in December 1927 (to G.C. gauge). Boiler dimensions amended December 1938 and again December 1948. Chimneys shown as 12ft. 11¾in. by December 1941, but domes remained 13ft. 2in.
Section C, 1927 Part 4. Engines with 3,250 gallon tenders. Superheated and to L.N.E.R. 13ft, gauge. Boiler dimensions amended December 1938.
Section C, 1927 Part 5. Engines with 4,000 gallon tenders. Superheated and to L.N.E.R. 13ft, gauge. Boiler dimensions amended December 1938.
1942 Part 3. Superheated piston valve rebuilds, both 3,250 and 4,000 gallon tenders.
1943 Parts 4 & 5. Combined diagram. Boiler dimensions amended December 1948. Class parts deleted December 1952.
1946 Part 2. Details of superheated engines only. Tube-plate thickness and springs altered. Boiler dimensions amended December 1948.

Illustration
Copyright: Ron Fisher
Power
J11/1 J11/2 J11/3 J11/4 J11/5
Variant Introduced 1901 1902 1943 0000 1929

Wheels
J11/1 J11/2 J11/3 J11/4 J11/5

Dimensions
J11/1 J11/2 J11/3 J11/4 J11/5

Boiler & Firebox
J11/1 J11/2 J11/3 J11/4 J11/5