Dolgoch (locomotive)
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 Dolgoch at Tywyn Wharf in 2006 |
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| Power type | steam |
|---|---|
| Builder | Fletcher, Jennings & Co. |
| Serial number | 63 |
| Model | Class Bb |
| Build date | 1866 |
| Total production | 1 |
| Configuration | 0-4-0 |
| Gauge | 2 ft 3 in (686 mm) |
| Wheel diameter | 2' 3" (68.5 cm) |
| Wheelbase | 6' 6" (198 cm) |
| Length | 17' 5" (5.3 m) |
| Locomotive weight | 10 tons |
| Boiler pressure | 140lb/sq. in. (10 at) |
| Cylinders | 2 |
| Cylinder size | 75⁄8" x 16" (19.3 x 40.6 cm) |
Dolgoch is a narrow gauge 0-4-0 well tank steam locomotive. It was built by Fletcher, Jennings & Co. in 1866 and is one of the oldest locomotives still in active service. It was delivered to the Talyllyn Railway in 1866 [1] and continues to run on this railway.
[edit] Design
The design is unusual for a 0-4-0. The engine has a long wheelbase and the driving axle is behind the firebox, which prevents the use of a conventional valve gear layout. Consequently, the Allan valve gear is driven from the leading coupled axle and doubled back to connect to the valve rods.
[edit] References
- ^ Boyd 1988
[edit] Bibliography
- Boyd, James I.C. (1988). The Talyllyn Railway. WildSwan Publications. ISBN 0906867460.
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