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 99 301–303
Quantity	3
Manufacturer	Henschel
Year(s) of manufacture	1910–14
Retired	1948
Wheel arrangement	0-6-0
Axle arrangement	C n2t
Type	K.33.6
Track gauge	900 mm (2 ft 11 ^7⁄16 in)
Length over buffers	5,650 mm (18 ft 6 in)
Height	3,330 mm (10 ft 11 in)
Overall wheelbase	1,800 mm (5 ft 11 in)
Empty weight	13 t
Service weight	16.2 t
Adhesive weight	16.2 t
Top speed	30 km/h (19 mph)
Indicated Power	125 PS / 92 kW
Starting tractive effort	22.95 kN
Driving wheel diameter	700 mm (28 in)
Valve gear	Stephenson
No. of cylinders	2
Cylinder bore	260 mm (10 in)
Piston stroke	400 mm (16 in)
Boiler Overpressure	12 bar
Grate area	0.56 m^2 (6.0 sq ft)
Radiative heating area	2.64 m^2 (28.4 sq ft)
Evaporative heating area	30.05 m^2 (323.5 sq ft)
Water capacity	1.7 m^3 (370 imp gal)
Fuel	0.75 t coal

See also

• Grand Duchy of Mecklenburg Friedrich-Franz Railway
• List of Mecklenburg locomotives

References

Literature

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