The Saxon Class VII T were twin-coupled tank engines of the Royal Saxon State Railways designed for branch line (Sekundärbahn) operations. In 1925, the Deutsche Reichsbahn grouped these locomotives 1925 into their Class 98.70.
Quick Facts VII T DR 98 7051 to 98 7079, Type and origin ...
VII T DR 98 7051 to 98 7079 |
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Specifications |
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Gauge | 1,435 mm (4 ft 8+1⁄2 in) |
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Driver dia. | 1,100 mm (3 ft 7+1⁄4 in) |
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Axle load | 12.3–10.4 t (12.1–10.2 long tons; 13.6–11.5 short tons) |
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Adhesive weight | 24.6–26.7 t (24.2–26.3 long tons; 27.1–29.4 short tons) |
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Empty weight | 19.0–20.7 t (18.7–20.4 long tons; 20.9–22.8 short tons) |
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Service weight | 24.6–26.7 t (24.2–26.3 long tons; 27.1–29.4 short tons) |
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Fuel capacity | 0.9 t |
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Water cap. | 2.9 m3 (640 imp gal) |
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Boiler:
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No. of heating tubes | 98 |
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Heating tube length | 3,170 mm (10 ft 4+3⁄4 in) |
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Boiler pressure | 12 kg/cm2 (1,180 kPa; 171 psi) |
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Heating surface: | |
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• Firebox | 0.9 m2 (9.7 sq ft) |
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• Radiative | 4.5 m2 (48 sq ft) |
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• Tubes | 39.0 m2 (420 sq ft) |
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• Evaporative | 43.5 m2 (468 sq ft) |
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Cylinders | 2 |
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Cylinder size | 355 mm (14 in) |
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Piston stroke | 530 mm (20+7⁄8 in) |
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Valve gear | Allan |
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