| 1243 |
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| Specifications |
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Configuration:
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| • Whyte | 4-4-0 |
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| Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
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| Driver dia. | 5 ft 6 in (1,676 mm) |
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| Adhesive weight | 57,000–62,000 lb (26–28 t) |
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| Loco weight | 84,000–95,000 lb (38–43 t) |
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| Firebox: | |
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| • Grate area | 15 sq ft (1.4 m2) |
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| Boiler pressure | 130 psi (0.9 MPa) as built;
140 psi (1.0 MPa) later |
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| Heating surface | 1,070–1,120 sq ft (99–104 m2) |
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| Superheater | None |
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| Cylinders | 2 outside |
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| Cylinder size | 18 in × 24 in
(460 mm × 610 mm) |
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1243 is a preserved former New South Wales Government Railways Z12 class steam locomotive. Built in 1882 by Atlas Engineering Company, Sydney, it is on static display at the Powerhouse Museum.
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