Caledonian Railway 812 and 652 Classes
| Caledonian Railway 812 and 652 Classes | |
|---|---|
|
'812' class No. 17596 at Corkerhill Locomotive Depot 15 August 1948 | |
| Type and origin | |
| Power type | Steam |
| Designer | John F. McIntosh |
| Builder |
CR St. Rollox Works, Dübs & Co. (15), Neilson, Reid & Co. (20), Sharp Stewart (15) |
| Build date | 1899–1909 |
| Total produced | 96 |
| Specifications | |
| Configuration | 0-6-0 |
| UIC classification | Cn |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Driver diameter | 5 ft 0 in (1.52 m) |
| Length | 56 ft 1 in (17.09 m) |
| Locomotive weight | 45.65 long tons (46.38 t) |
| Boiler pressure | 160 psi (1,100 kPa) |
| Superheater type | None |
| Cylinders | Two, inside |
| Cylinder size | 18.5 in × 26 in (470 mm × 660 mm) |
| Valve gear | Stephenson |
| Valve type | Slide valves |
| Performance figures | |
| Tractive effort | 20,170 lbf (89.7 kN) |
| Career | |
| Operator(s) | CR • LMS • BR |
| Class | CR: 812 and 652 |
| Power class | LMS/BR: 3F |
| Number in class |
1 January 1923: 96 1 January 1948: 93 |
| Withdrawn | 1948–1963 |
| Preserved | No. 828 |
| Disposition | One preserved, remainder scrapped |
The Caledonian Railway 812 and 652 Classes were 0-6-0 steam tender locomotives designed by John F. McIntosh for the Caledonian Railway and introduced in 1899. They had the same boiler type as the 721 “Dunalastair” Class 4-4-0s.
Construction
96 locomotives were built, as follows:
| Year | Quantity | CR Nos. | Builder | Builders No. | LMS Nos. | BR Nos. | Notes |
|---|---|---|---|---|---|---|---|
| 1899 | 17 | 812–828 | CR, St. Rollox | 17550–17566 | 57550–57566 | ||
| 1899 | 10 | 829–838 | Neilson, Reid & Co. | 5613–5622 | 17567–17576 | 57567–57576 | |
| 1900 | 10 | 839–848 | Neilson, Reid & Co. | 5623–5632 | 17577–17586 | 57577–57586 | |
| 1900 | 15 | 849–863 | Sharp Stewart | 4633–4647 | 17587–17601 | 57587–57601 | |
| c.1900 | 15 | 864–878 | Dübs & Co. | 3880–3894 | 17602–17616 | 57602–57616 | |
| 12 | 282–293 | 17617–17628 | 57617–57628 |
| Year | Quantity | CR Nos. | Builder | Builders No. | LMS Nos. | BR Nos. | Notes |
|---|---|---|---|---|---|---|---|
| 8 | 652–659 | 17629–17636 | 57629–57636 | ||||
| 4 | 662–665 | 17637–17640 | 57637–57640 | ||||
| 4 | 325–328 | 17641–17644 | 57641–57644 | ||||
| 1 | 661 | 17645 | 57645 |
Seventeen were fitted with the Westinghouse air brakes for passenger train working, including the only surviving engine of the class, No. 828. All 96 passed to the London, Midland and Scottish Railway at the 1923 grouping. Only three, 17567, 17598 and 17610, had been withdrawn by the time of nationalisation in 1948. The last locomotive in service was not withdrawn until 1963.
Preservation
Locomotive 828 (LMS 17566, BR 57566) is the sole survivor of the class and is an important example of Scottish industrial heritage. It is currently in service at the Strathspey Railway.
In fiction
In The Railway Series children's books by the Rev. W. Awdry, the characters Donald and Douglas ("the Scottish twins"), are based on the Caledonian 812 class. They carried fictional numbers (57646 and 57647) before coming to Sodor. [1]
References
- ↑ "Donald and Douglas". (The real prototype locomotives that inspired the Rev W Awdry). The Real Lives of Thomas the Tank Engine. Retrieved 25 January 2011.
- Casserley, H.C. & Johnston, Stuart W. (1974) [1966]. Locomotives at the Grouping 3: London, Midland and Scottish Railway. Shepperton, Surrey: Ian Allan. pp. 178–179. ISBN 0-7110-0554-0.
See also
External links
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Wikimedia Commons has media related to Caledonian Railway 812 class. |
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