Registered Museum No. RD1433 / Amgueddfa Gofrestredig Rhif RD1433
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Dinorwic Loco "Rough Pup"
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Rough Pup (Dinorwic Quarries)
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This 0-4-0 saddle tank is one of a numerous design (the "Alice" class) built for use in the Dinorwic Slate Quarries at Llanberis by the Hunslet Engine Co. of Leeds. Rough Pup (works no. 541) dates from 1892, and is virtually in the condition in which she finished work in 1960. She arrived in the museum in 1968.
The main technical details of the "Alice" class are:
- Wheel diameter: 1 ft. 8 in.
- Wheelbase: 3 ft. 3 in.
- Cylinder dimensions: 7 in. x 10 in.
- Boiler pressure: 140 psi.
- Tractive effort: 2579 lb.
- Weight in working order: 6 tons
- Water capacity: 100 gallons
- Minimum curve radius: 21 ft.
- Gauge: 1 ft. 10 3/4 in.
Further details of the Dinorwic Quarry railways, together with drawings of the "Alice" locomotives, may be found in Narrow Gauge Railways in North Caernarvonshire, Volume 3. The Dinorwic Quarry & Railways, Great Orme Tramway and other rail systems, J. I. C. Boyd, 1986 (Oakwood Press, Oxford). ISBN 0 85361 238 1.