NWE Nos. 6 and 7

NWE Nos. 6–7 Class 99.610
Type and origin Builder Henschel Build date 1914 Total produced 2
Specifications  • German K 33.11 Gauge 1,000 mm Driver dia. 800 mm Wheelbase: ​  • Overall 2,500 mm Length: ​  • Over buffers 7,734 mm Width 2,500 mm Height 3,650 mm Adhesive weight 32 t Empty weight 26 t Service weight 32 t Fuel capacity 1.1 t coal Water cap. 4,0 m3 Firebox: ​  • Grate area 1.4 m2; 1.5 m2 * Boiler: ​  • Small tubes 88; 173 *  • Large tubes 18; 0 * Boiler pressure 14 bar, 1.4 MPa Heating surface: ​  • Firebox 4.76 m2; 5.06 m2 *  • Total surface 51.36 m2; 69.65 m2 Superheater: ​  • Heating area 18.30 m2; 0 * Cylinders 2 Cylinder size 430 mm, 400 mm * Piston stroke 400 mm Valve gear Heusinger with Kuhn slide Train brakes Knorr m. Z. Parking brake counterweight handbrake (Wurfhebel-Handbremse) Couplers buffer and chain coupler (Balancierhebelkupplung)
Performance figures Maximum speed 30 km/h Indicated power 280 kW (380 PS); 220 kW (300 PS) * Tractive effort: ​  • Starting 76.0 kN (7.8 Mp), 65.9 kN (6.7 Mp) *
Career Numbers NWE Nos. 6–7 99 6101–6102
* No. 7 / 99 6102

NWE Nos. 6 and 7, later Class 99.610, are narrow gauge tank locomotives with a C axle arrangement that belonged to the Nordhausen-Wernigerode Railway.

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.

99 6101 takes on water

99 6101 heading a heritage train

Literature

• 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

External links

• 99 6101 with the Selke Valley Railway Society
• 99 6102 with the Selke Valley Railway Society