NWE Nos. 6 and 7
|NWE Nos. 6–7
|Number(s):||NWE Nos. 6–7
|Year(s) of manufacture:||1914|
|Axle arrangement:||C h2t, C n2t *|
|Length over buffers:||7,734 mm|
|Overall wheelbase:||2,500 mm|
|Empty weight:||26 t|
|Service weight:||32 t|
|Adhesive weight:||32 t|
|Top speed:||30 km/h|
|Indicated Power:||280 kW (380 PS);
220 kW (300 PS) *
|Starting tractive effort:||76.0 kN (7.8 Mp),
65.9 kN (6.7 Mp) *
|Driving wheel diameter:||800 mm|
|Valve gear:||Heusinger with Kuhn slide|
|No. of cylinders:||2|
|Cylinder bore:||430 mm, 400 mm *|
|Piston stroke:||400 mm|
|Boiler Overpressure:||14 bar, 1.4 MPa|
|No. of heating tubes:||88; 173 *|
|No. of smoke tubes:||18; 0 *|
|Grate area:||1.4 m²; 1.5 m² *|
|Radiative heating area:||4.76 m²; 5.06 m² *|
|Superheater area:||18.30 m²; 0 *|
|Evaporative heating area:||51.36 m²; 69.65 m²|
|Water capacity:||4,0 m³|
|Fuel:||1.1 t coal|
|Parking brake:||counterweight handbrake (Wurfhebel-Handbremse)|
|Train brakes:||Knorr m. Z.|
|Couplers:||buffer and chain coupler (Balancierhebelkupplung)|
|* No. 7 / 99 6102|
The two engines had been supplied to the Army Technical Research Institute (Heerestechnische Prüfungsanstalt) but were transferred in 1917 (superheated steam engine) and 1921 (saturated steam engine) to the Nordhausen-Wernigerode Railway as NWE 6 and NWE 7.
NWE 7 had previously worked as Locomotive No. 15 with the Nassau Light Railway.
Until the 1980s, both engines were used around Wernigerode by the Deutsche Reichsbahn, their last duties being in Rollbock service. The DR gave them new numbers following their nationalisation. Although they had been taken out of service, the Harz Narrow Gauge Railways took both engines over.
- Locomotive 99 6101, formerly NWE 6, now in the care of the Harz Narrow Gauge Railway Society (Interessengemeinschaft Harzer Schmalspurbahnen).
- Locomotive 99 6102, formerly NWE 7, now in the care of the Selke Valley Railway Society (Freundeskreis Selketalbahn).
Only 99 6101 is currently in working order.
- Horst J. Obermayer: Taschenbuch Deutsche Schmalspur-Dampflokomotiven. Franckh, Stuttgart 1971, ISBN 3-440-03818-1
- Hans Röper, Helmut Becker, Werner Dill, Gerhard Zieglgänsberger: Die Harzquer- und Brockenbahn. 3., erweiterte Auflage, Transpress Verlagsgesellschaft, Berlin 1992 ISBN 3-344-70747-7