Mecklenburg T 7

The Mecklenburg T 7 engines were German, six-coupled, narrow gauge, steam locomotives with the Grand Duchy of Mecklenburg Friedrich-Franz Railway (Großherzoglich Mecklenburgische Friedrich-Franz-Eisenbahn). They were employed on the Bäderbahn between Bad Doberan and Heiligendamm. They replaced the existing vehicles after the line had been extended to 15.4 kilometres to Arendsee. The three engines, which were later given the numbers 99 301 - 99 303 in the 1920s by the Deutsche Reichsbahn, were delivered in 1910, 1911 and 1914. The design of these locomotives was heavily based on those of the Class T 3 from Prussia. Later, two units went to the so-called Rübenbahn ('Turnip Railway'), the branch line from Tangermünde to Lüderitz. No. 99 302 was retired in 1932, the other two were given to the USSR in 1945 as reparations.

Mecklenburg T 7
DRG Class 99.30
Number(s)
  • MFFE: 1005–1007
  • DRG: 99 301 – 99 303
Quantity3
ManufacturerHenschel
Year(s) of manufacture1910–14
Retired1948
Wheel arrangement0-6-0T
Axle arrangementC n2t
TypeK.33.6
Track gauge900 mm (2 ft 11 7⁄16 in)
Length over buffers5,650 mm (18 ft 6 1⁄2 in)
Height3,330 mm (10 ft 11 1⁄8 in)
Overall wheelbase1,800 mm (5 ft 10 3⁄4 in)
Empty weight13 t (13 long tons; 14 short tons)
Service weight16.2 t (15.9 long tons; 17.9 short tons)
Adhesive weight16.2 t (15.9 long tons; 17.9 short tons)
Top speed30 km/h (19 mph)
Indicated Power125 PS (91.9 kW; 123 hp)
Starting tractive effort22.95 kN (5,160 lbf)
Driving wheel diameter700 mm (2 ft 3 1⁄2 in)
Valve gearStephenson
No. of cylinders2
Cylinder bore260 mm (10 1⁄4 in)
Piston stroke400 mm (15 3⁄4 in)
Boiler Overpressure12 kg/cm2 (1,180 kPa; 171 lbf/in2)
Grate area0.56 m2 (6.0 sq ft)
Radiative heating area2.64 m2 (28.4 sq ft)
Evaporative heating area30.05 m2 (323.5 sq ft)
Water capacity1.7 m3 (370 imp gal; 450 US gal)
Fuel750 kg (1,650 lb) coal

See also

Literature
  • Obermayer, Horst J. (1971). Taschenbuch Deutsche Schmalspur-Dampflokomotiven (in German). Stuttgart: Franckh. ISBN 3-440-03818-1.
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