| Highland Railway O class | |
|---|---|
| Power type | Steam |
| Designer | David Jones |
| Builder | HR Lochgorm Works |
| Build date | 1878–1879 |
| Total produced | 3 |
| Configuration | 2-4-0T (rebuilt as 4-4-0T) |
| UIC classification | 1′B t, rebuilt as 2′B t |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Driver diameter | 4 ft 9 in (1,448 mm) |
| Locomotive weight | 36 tons 0 cwt (80,600 lb or 36.6 t) |
| Cylinders | Two, outside |
| Cylinder size | 16 × 22 in (406 × 559 mm) |
| Career | Highland Railway London, Midland & Scottish |
| Class | HR: O LMS: |
| Number in class | 3 |
The Highland Railway O Class locomotives were built as 2-4-0T tank engines, but were soon rebuilt as 4-4-0Ts. Designed by David Jones, they had 4-foot-9-inch (1,448 mm) coupled wheels, 16-by-22-inch (406 by 559 mm) outside cylinders and weight (in original condition) of 36 tons.
Three were built at the company's Lochgorm Works in 1878 and 1879.
| HR No. | Name | Notes |
|---|---|---|
|
|
Breadalbane | Renamed Aberfeldy in 1886 and renumbered 50 in 1901 |
|
|
Burghead | |
|
|
Highlander |
They were quickly rebuilt as 4-4-0Ts due to trouble with the single leading axle. All three were still in service at the time of the Grouping, having been relegated to shunting duties.
|
||||||||||||||||||||||||||