Württemberg Ts 4

The DRG Class 99.17, formerly the Württemberg Ts 4 of the Royal Württemberg State Railways were German narrow gauge steam locomotives bought for working the 15.11 kilometre long route between the towns of Altensteig and Nagold. The three tank locomotives had an outer frame and a Klose drive. The first and third axles were steered by the third, radially-sliding axle by means of a system of levers. The second axle was driven by the inside cylinder and had no wheel flanges. Overall the system was very reliable, but nevertheless also very maintenance-intensive.

Württemberg Ts 4 DRG Class 99.17
Number(s)	Nr. 1–3 99 171–173
Quantity	3
Manufacturer	Maschinenfabrik Esslingen
Year(s) of manufacture	1891, 1899
Retired	1931
Axle arrangement	D n2t
Type	K 44.8
Track gauge	1,000 mm (3 ft 3 ^3⁄8 in)
Length over buffers	8,130 mm (26 ft 8 in)
Height	3,540 mm (11 ft 7 ^3⁄8 in)
Width	2,200 mm (7 ft 2 ^5⁄8 in)
Wheelbase	2,250 mm (7 ft 4 ^1⁄2 in)
Overall wheelbase	2,250 mm (7 ft 4 ^1⁄2 in)
Empty weight	23.65 tonnes (23.28 long tons; 26.07 short tons)
Service weight	29.80 tonnes (29.33 long tons; 32.85 short tons)
Adhesive weight	29.80 tonnes (29.33 long tons; 32.85 short tons)
Top speed	30 km/h (19 mph)
Driving wheel diameter	900 mm (2 ft 11 ^3⁄8 in)
Valve gear	Klose
No. of cylinders	2
Cylinder bore	340 mm (13 ^3⁄8 in)
Piston stroke	500 mm (19 ^11⁄16 in)
Boiler Overpressure	12 kg/cm^2 (1,180 kPa; 171 psi)
Grate area	1.02 m^2 (11.0 sq ft)
Evaporative heating area	70.2 m^2 (756 sq ft)
Water capacity	2.4 m^3 (530 imp gal; 630 US gal)
Fuel	750 kg (1,650 lb)

The engines were delivered in 1891, 1892 and 1899, and later all taken over by the Reichsbahn. There they were given numbers 99 171–99 173. They also had the names Altensteig, Berneck and Ebhausen

See also

• Royal Württemberg State Railways
• List of Württemberg locomotives and railbuses