L&YR Class 8
Lancashire & Yorkshire Railway Class 8 (first batch)
Type and origin |
Power type |
Steam |
Designer |
George Hughes |
Builder |
Horwich Works |
Order number |
Horwich Lot 60 |
Serial number |
Horwich 1009–1028 |
Build date |
June 1908 – March 1909 |
Total produced |
20 |
|
Specifications |
Configuration:
|
|
• Whyte
|
4-6-0 |
• UIC
|
2′C n4 |
Gauge |
4 ft 8 1⁄2 in (1,435 mm) |
Leading dia. |
3 ft 0 1⁄2 in (0.927 m) |
Driver dia. |
6 ft 3 in (1.905 m) |
Wheelbase |
-
Coupled: 13 ft 7 in (4.14 m)
-
Loco: 25 ft 4 in (7.72 m)
|
Loco weight |
77.05 long tons (78.29 t) |
Fuel type |
Coal |
Boiler pressure |
180 lbf/in2 (1.24 MPa) |
Heating surface |
2,507 sq ft (232.9 m2) |
Superheater |
(None) |
Cylinders |
Four |
Cylinder size |
16 in × 26 in (406 mm × 660 mm) |
Valve gear |
Joy |
Valve type |
Slide valves |
Train brakes |
Vacuum |
|
|
Career |
Operators |
L&YR, LMS
|
Class |
L&YR: 8 |
Power class |
LMS: 3P |
Numbers |
- L&YR: 1506–1525
- LMS:10400–10404
|
Withdrawn |
1925–1926 |
Disposition |
15 rebuilt 1919–1920, remainder scrapped |
|
Type and origin |
Power type |
Steam |
Designer |
George Hughes |
Builder |
Horwich Works |
Order number |
Horwich Lot 60 |
Serial number |
Horwich 1009–1028 |
Build date |
June 1908 – March 1909 |
Total produced |
20 |
Specifications |
Configuration:
|
|
• Whyte
|
4-6-0 |
• UIC
|
2′C n4 |
Gauge |
4 ft 8 1⁄2 in (1,435 mm) |
Leading dia. |
3 ft 0 1⁄2 in (0.927 m) |
Driver dia. |
6 ft 3 in (1.905 m) |
Wheelbase |
-
Coupled: 13 ft 7 in (4.14 m)
-
Loco: 25 ft 4 in (7.72 m)
|
Loco weight |
77.05 long tons (78.29 t) |
Fuel type |
Coal |
Boiler pressure |
180 lbf/in2 (1.24 MPa) |
Heating surface |
2,507 sq ft (232.9 m2) |
Superheater |
(None) |
Cylinders |
Four |
Cylinder size |
16 in × 26 in (406 mm × 660 mm) |
Valve gear |
Joy |
Valve type |
Slide valves |
Train brakes |
Vacuum |
Career |
Operators |
L&YR, LMS
|
Class |
L&YR: 8 |
Power class |
LMS: 3P |
Numbers |
- L&YR: 1506–1525
- LMS:10400–10404
|
Withdrawn |
1925–1926 |
Disposition |
15 rebuilt 1919–1920, remainder scrapped |
Lancashire & Yorkshire Railway Class 8 (second batch)
Type and origin |
Only items that differ are shown below |
Power type |
Steam |
Builder |
Horwich Works |
Order number |
- L&YR Lots 79, 80, 81, 83
- LMS Lot No. 1
|
Serial number |
Horwich 1319–1353, 1364–1383 |
Build date |
1919–1925 |
Total produced |
- 15 rebuilt from first batch
- 55 new
|
|
Specifications |
Configuration:
|
|
• UIC
|
2′C h4 |
Wheelbase |
Loco: 25 ft 7 in (7.80 m) |
Loco weight |
79.05 long tons (80.32 t) |
Heating surface |
1,686 sq ft (156.6 m2) |
Superheater:
|
|
• Type |
28-element Top & Bottom |
• Heating area |
552 sq ft (51.3 m2) |
Cylinders |
Four |
Cylinder size |
16 1⁄2 in × 26 in (419 mm × 660 mm) or 15 3⁄4 in × 26 in (400 mm × 660 mm) |
Valve gear |
Walschaers |
Valve type |
Piston valves |
Train brakes |
Vacuum |
|
Performance figures |
Tractive effort |
28,880 lbf (128.5 kN) or 26,315 lbf (117.1 kN) |
|
Career |
Operators |
|
Power class |
LMS: 5P |
Numbers |
L&YR: 1506-1525 (excl 1507/8, 1512/3, 1515), 1649–1683
LMS:10405–10474 |
Withdrawn |
1934–1951 |
Disposition |
All scrapped |
|
Type and origin |
Only items that differ are shown below |
Power type |
Steam |
Builder |
Horwich Works |
Order number |
- L&YR Lots 79, 80, 81, 83
- LMS Lot No. 1
|
Serial number |
Horwich 1319–1353, 1364–1383 |
Build date |
1919–1925 |
Total produced |
- 15 rebuilt from first batch
- 55 new
|
Specifications |
Configuration:
|
|
• UIC
|
2′C h4 |
Wheelbase |
Loco: 25 ft 7 in (7.80 m) |
Loco weight |
79.05 long tons (80.32 t) |
Heating surface |
1,686 sq ft (156.6 m2) |
Superheater:
|
|
• Type |
28-element Top & Bottom |
• Heating area |
552 sq ft (51.3 m2) |
Cylinders |
Four |
Cylinder size |
16 1⁄2 in × 26 in (419 mm × 660 mm) or 15 3⁄4 in × 26 in (400 mm × 660 mm) |
Valve gear |
Walschaers |
Valve type |
Piston valves |
Train brakes |
Vacuum |
Performance figures |
Tractive effort |
28,880 lbf (128.5 kN) or 26,315 lbf (117.1 kN) |
Career |
Operators |
|
Power class |
LMS: 5P |
Numbers |
L&YR: 1506-1525 (excl 1507/8, 1512/3, 1515), 1649–1683
LMS:10405–10474 |
Withdrawn |
1934–1951 |
Disposition |
All scrapped |
The Lancashire and Yorkshire Railway class 8 was a four-cylinder 4-6-0 express passenger locomotive designed by George Hughes in 1908. These original locomotives were described as “poor performers” . They suffered coal consumption as high as 100 pounds per mile plus mechanical problems causing very poor reliability. Around the time of their construction, they were nicknamed "Dreadnoughts" on account of their large size, after the then-new Royal Navy battleship HMS Dreadnought.
As designed, they were fitted with a saturated boiler, slides valves and Joy valve gear. In 1919–20, fifteen were rebuilt with superheaters, piston valves, Walschaerts valve gear and slightly larger cylinders. The nominal tractive effort of the rebuilds was 28,879 lbf (128.46 kN) which made these engines for a time the most powerful in Great Britain until 1922 when the Gresley pacifics appeared. The rebuilt locomotives were reported to be "a good workmanlike engine" and "an engine thoroughly master of its work", although still with a coal consumption on the heavy side.
Fourteen more of these Walschaerts valve gear locomotives were built before grouping, and a further 41 after the creation of the London, Midland and Scottish Railway. The last 20 of these were originally part of the 30-locomotive order for the related L&YR Hughes 4-6-4T.
No 10456 was converted to a 4-cylinder compound in July 1926; it was fitted with 16-inch (406 mm) high pressure and 22-inch (559 mm) low pressure cylinders.
The relatively early withdrawal of most units must be considered in the context that the LMS inherited 393 different locomotive classes at Grouping, and LMS chairman Sir Josiah Stamp thought it desirable to reduce this to just 10 classes.
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Wikipedia