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Record: 10235 (26/09/2023)
(Free MySQL Counter)
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GCR/LNER Robinson "Q4" Class 0-8-0
General
| Designer |
John Robinson |
| Introduced |
1902 |
| Pre-Grouping Company |
Great Central Railway |
| Grouping Company |
London and North Eastern Railway |
| Description (1957) |
Class Q4, Robinson G.C.R. 0-8-0's, originally 89 engines built between 1902-11, with 4'8"wheels and 2 outside cylinders. Several of the class were superheated and some were fitted with piston valves. The class as a whole was withdrawn from 1934 onwards. It is interesting to note that 13 locomotives of this class were rebuilt as tank engines, see Nos. 69925-69937. |
| Wheel Arrangement |
0-8-0 |
| Number Built as Q4 |
89 |
| Number Scrapped |
89 |
| First in Service |
1902 |
| Last in Service |
15/09/1959 |
| Manufacturers |
|
|
|
|
Power
|
Q4/1 |
Q4/2 |
| Variant Introduced |
1902 |
1914 |
| Tractive Effort |
25,644lbs |
As Q4/1 |
| Outside Cylinders |
19" x 26" (2 off) |
As Q4/1 |
| Outside Valves |
Slide |
As Q4/1 |
| Outside Motion |
Stephenson |
As Q4/1 |
Wheels
|
Q4/1 |
Q4/2 |
| Drivers |
4' 8" |
As Q4/1 |
| Locomotive Wheelbase |
17' 1" |
As Q4/1 |
| Total Wheelbase |
42' 61⁄2" |
As Q4/1 |
| Descriptive Wheelbase |
5' 8½" + 5' 5½" + 5' 11" - 11' 5½" - 6' 6" + 6' 6" = 42' 6½" |
As Q4/1 |
Dimensions
|
Q4/1 |
Q4/2 |
| Length (over buffers) |
58' 23⁄4" |
As Q4/1 |
| Weight (loco only) |
62t 8cwt |
63t 0cwt |
| Maximum Axle Load |
17t 0cwt |
As Q4/1 |
Boiler & Firebox
|
Q4/1 |
Q4/2 |
| Boiler Diagram |
17Sat |
17Sup |
| Boiler Max Diameter |
4' 9" |
4' 9" |
| Boiler Barrel Length |
15' |
15' |
| Boiler Pressure |
180lbs |
180lbs |
| Boiler Pitch |
8' 41⁄4" |
As Q4/1 |
| Firebox Type |
Belpaire |
Belpaire |
| Firebox Length |
7' 9" |
7' 9" |
| Firebox Grate Area |
23.62ft2 |
23.62ft2 |
| Firebox Heating Surface |
140ft2 |
140ft2 |
| Tube Number |
207 |
94 |
| Tube Diameter |
2" |
2" |
| Tube Area |
1665ft2 |
756ft2 |
| Flue Elements |
|
21 |
| Flue Diameter |
|
51⁄4" |
| Flue Area |
|
442ft2 |
| Total Evaporative Area |
1805ft2 |
1338ft2 |
| Superheater Elements |
|
21 |
| Superheater Element Diameter |
|
11⁄16" |
| Superheater Element Area |
|
230ft2 |
| Total Heating Area |
1805ft2 |
1568ft2 |
|