| Powertype: | Steam |
| LNER Thompson Class Q1 | |
| Designer: | Edward Thompson (rebuild) |
| Rebuilddate: | 1942–1945 |
| Numberrebuilt: | 13 |
| Whytetype: | 0-8-0T |
| Driverdiameter: | 4feet |
| Locoweight: | Q1/1: 69.9LT Q1/2: 73.65LT |
| Fuelcap: | Q1/1: 4.5LT Q1/2: 4LT |
| Watercap: | Q1/1: 1500impgal Q1/2: 2000impgal |
| Cylindercount: | Two outside |
| Cylindersize: | 19x |
| Boilerpressure: | 180psi |
| Tractiveeffort: | 25645lbf |
| Valvegear: | Stephenson |
| Operatorclass: | Q1 |
| Powerclass: | 5F |
| Withdrawndate: | 1954–1959 |
| Disposition: | All scrapped |
The London and North Eastern Railway (LNER) Thompson Class Q1 was a class of 0-8-0T steam locomotives. They were rebuilds of the GCR Class 8A (LNER Class Q4) 0-8-0s. Thirteen were rebuilt between 1942 and 1945 at Gorton Works. All passed to British Railways in 1948, numbered 69925–69937.[1] [2]
The locomotives had outside cylinders with inside valves and inside Stephenson valve gear. There were two variants:
The extra of water in the Q1/2 was carried in the rear tank, under the coal bunker, resulting in a reduced coal capacity.
All the Class Q1 locomotives were withdrawn and scrapped from 1954 to 1959.