Palatine T 4.I

Palatine T 4I and D VIII DRG Class 986
Type and origin Power type Steam Builder Lokomotivfabrik Krauss & Comp. Serial number 3233–3236, 3670–3672, 6070–6073, 6223–6226 Build date 1895–1910 Total produced 15
Specifications Configuration: ​  • Whyte 0-6-2T  • UIC C1′ n2t  • German T 4I: L 34.12 D VIII: L 34.13 Gauge 1,435 mm (4 ft 8+1⁄2 in) Driver dia. 996 mm (3 ft 3+1⁄4 in) Trailing dia. 780 or 790 mm (2 ft 6+3⁄4 in or 2 ft 7+1⁄8 in) Wheelbase: ​  • Engine 5,500 mm (18 ft 1⁄2 in)  • Coupled 2,800 mm (9 ft 2+1⁄4 in) Length: ​  • Over buffers 9,700 or 10,090 mm (31 ft 10 in or 33 ft 1+1⁄4 in) Axle load 12.2 or 13.6 t (12.0 or 13.4 long tons; 13.4 or 15.0 short tons) Adhesive weight 36.6 or 40.2 t (36.0 or 39.6 long tons; 40.3 or 44.3 short tons) Service weight 47.2 or 51.4 t (46.5 or 50.6 long tons; 52.0 or 56.7 short tons) Fuel type Coal Fuel capacity 2.2 or 2.7 t (2.2 or 2.7 long tons; 2.4 or 3.0 short tons) Water cap. 6.5 or 8.0 m3 (1,400 or 1,800 imp gal; 1,700 or 2,100 US gal) Firebox: ​  • Grate area 1.42 m2 (15.3 sq ft) Boiler: ​  • Pitch 2,073 mm (6 ft 9+5⁄8 in)  • Tube plates 3,800 mm (12 ft 5+1⁄2 in)  • Small tubes 45 mm (1+3⁄4 in), 159 off Boiler pressure 12 or 13 bar (12.2 or 13.3 kgf/cm2; 174 or 189 lbf/in2) Heating surface: ​  • Firebox 5.88 m2 (63.3 sq ft)  • Tubes 75.89 m2 (816.9 sq ft)  • Total surface 81.77 m2 (880.2 sq ft) Cylinders Two, outside Cylinder size 406 mm × 508 mm (16 in × 20 in) Loco brake Riggenbach counter-pressure brake
Performance figures Maximum speed 45 km/h (28 mph) Indicated power 390 PS (287 kW; 385 hp)
Career Numbers Pflaz: 194–197, 44–45, 56, 322–329 DRG 98 651 – 98 657, 98 681 – 98 688 Retired 1950

The locomotives of Palatine Class T 4^I were saturated steam tank engines operated by the Palatinate Railway. Krauss delivered four of them in 1895 and a further three in 1897. The development of these engines had been based on the second batch of Bavarian D VIII engines and they differed only in a few dimensions: for example, the diameter of the carrying and coupled wheels was smaller. In addition they had a larger coal tank.

In 1908 and 1910 Krauss supplied two batches, each of four locomotives, which were now designated the Palatine D VIII. These differed in having a larger fuel tank and a higher maximum boiler pressure: 13 as opposed to 12 bar.

In 1925 the Deutsche Reichsbahn took over all 15 locomotives and grouped them together with the Bavarian D VIII into DRG Class 98.6. The first seven machines were allocated numbers 98 651–657 and the eight newer ones numbers 98 681–688. The first group was retired by 1940, the second survived to join the Deutsche Bundesbahn fleet. Nos. 98 682 and 98 686 were the last two units to be retired, in 1950.

In 1949 the Augsburger Localbahn bought no. 98 683 and operated it as "no. 10" until 1957.

See also

• Palatinate Railway
• List of Palatine locomotives and railbuses

References

• Schnabel, Heinz (1987). Eisenbahn-Fahrzeug-Archiv Band 2.5: Lokomotiven bayerischer Eisenbahnen (in German). Düsseldorf: Alba Publikation Alf Teloeken GmbH + Co KG. pp. 291–292, 295–296, 388, 389. ISBN 3-87094-105-7.
• Weisbrod, Manfred; Petznik, Wolfgang (1981). Dampflokomotiven deutscher Eisenbahnen, Baureihe 97–99 (EFA 1.4) (in German) (2nd ed.). Düsseldorf: Alba. pp. 50–52, 57–58. ISBN 3-87094-087-5.