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Record: 71951 (21/04/2026)
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GNR/LNER Ivatt "J3" Class 0-6-0
Class Types
| GNR Class |
J4 |
| LNER Class |
J3 |
General
| Designer |
Henry Ivatt |
| Rebuilt By |
Gresley |
| Introduced |
1896 |
| Pre-Grouping Company |
Great Northern Railway |
| Grouping Company |
London and North Eastern Railway |
| Description (1957) |
Class J3. Stirling and Ivatt 5'2" 0-6-0's rebuilt with larger 4'8" boilers. No. 64163 was formerly M. & G.N.J.R. No. 88. The last two of the class to remain in service were withdrawn at the end of 1954. |
| Wheel Arrangement |
0-6-0 |
| Number Built as J3 |
0 |
| Conversions from other classes |
165 |
| Last in Service |
12/1954 |
| Manufacturers |
|
| Classification |
Southern Area 2 |
| Route Availability |
3 |
| BR Power Class |
2F |
| Engine Diagrams |
| Diagram | Details | | Section N, 1924 | Chimney height 13ft 3⅞in, 3,170 gallon tender. Drawing show sandbox on leading splasher. | | Section N, 1938 | Alternative chimney heights of 13ft. 3⅞in. and 12ft 7⅞in. Drawing shows sandboxes either side of middle splasher. |
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Power
| Variant Introduced |
1912 |
| Tractive Effort |
19,105lbs |
| Inside Cylinders |
17.5" x 26" (2 off) |
| Inside Valves |
Slide |
| Inside Motion |
Stephenson |
Wheels
| Drivers |
5' 2" |
| Locomotive Wheelbase |
15' 6" |
| Tender Wheelbase |
13' |
| Total Wheelbase |
36' 111⁄2" |
| Descriptive Wheelbase |
7' 3" + 8' 3" + 8' 5½" + 6' 6" + 6' 6" = 36' 11½" |
Dimensions
| Length (over buffers) |
49' 6" |
| Weight (in running order) |
81t 2cwt |
| Weight (loco only) |
42t 12cwt |
| Adhesive Weight |
42t 12cwt |
| Maximum Axle Load |
16t 0cwt |
| Water Capacity |
3,170gal |
| Coal Capacity |
6t 0cwt |
Boiler & Firebox
| Boiler Diagram |
8 |
| Boiler Max Diameter |
4' 8" |
| Boiler Barrel Length |
10' 1" |
| Boiler Pressure |
175lbs |
| Boiler Pitch |
7' 91⁄4" |
| Firebox Length |
5' 6" |
| Firebox Grate Area |
16.25ft2 |
| Firebox Heating Surface |
105ft2 |
| Tube Number |
238 |
| Tube Diameter |
13⁄4" |
| Tube Area |
1130ft2 |
| Total Evaporative Area |
1235ft2 |
| Total Heating Area |
1235ft2 |
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