UeBB CZm 1/2

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CZm 1/2
Kittel steam railcar CZm 1/2 31 in Koblenz, 2009
Kittel steam railcar CZm 1/2 31 in Koblenz, 2009
Numbering: 1, later 31
Number: 1
Manufacturer: Esslingen
Year of construction (s): 1902 (1907), 1980
Retirement: 1950
Axis formula : A1
Gauge : 1435 mm ( standard gauge )
Length over buffers: 11,000 mm
Service mass: 21 t
Friction mass: 11.2 t
Top speed: 45 km / h
Driving wheel diameter: 1,020 mm
Rear wheel diameter: 1,020 mm
Cylinder diameter: 190 mm
220 mm 1
Piston stroke: 300 mm
Boiler overpressure: 18-25 bar
16 bar 1
Grate area: 0.5 m²
0.7 m² 1
Superheater area : 4.6 m² 1
Evaporation heating surface: 11 m²
35.1 m² 1
Brake: Westinghouse air brake (1907)
previously presumably vapor brake, spindle brake
Seats: 30th
1 after conversion to the Kittel boiler system

The UeBB CZm 1/2 number 31 steam multiple unit of the Uerikon – Bauma Railway , UeBB for short, is an operationally preserved historic vehicle in the inventory of SBB Historic .

history

The 1902 or by the Swiss Northeastern Railway , shortly NOB ordered test cars Cm 1.2 1 of the Maschinenfabrik Esslingen with a boiler of the type Serpollet equipped, immediately became the property of SBB and was also called Cm 1/2 1 . It came into operation at the same time as the Cm 1/2 11 motor car, which was also procured as a test vehicle and was equipped with a Daimler petrol engine .

Since the coal-fired Serpollet boiler, in contrast to the automobile and commercial vehicle traffic as well as the tram traffic in full-line use, was not convincing, it was also criticized that the short wheelbase with the large overhang caused a restless run, in 1907 the railcar was transferred to the UeBB sold and installed a boiler system Kittel , analogous to KWStE DW 2-6 and 15 .

In 1907 it was renamed CZm 1/2 and was given the number 31; he still wears this mark today. The conversion was crowned with success and the railcar was used as an economical vehicle at the UeBB as often as possible. On the occasion of the rebuilding in 1907, a Westinghouse air brake was also installed. Before that, the vehicle most likely had a vapor barrier. After the conversion in 1907, the vehicle had a pulling force of 1150 kg, which corresponds to an output of around 73 kW (100 hp). Together with the 14 t trailer, this was enough for a top speed of 30 km / h. With a gradient of 10 ‰, 15 km / h were reached. After the liquidation of the UeBB, the railcar returned to the SBB and was scrapped in 1950.

The CZm 1/2 was exhibited in 1974 on the occasion of the special exhibition railcars of the Swiss railways in the Swiss Museum of Transport . From 1979 to 1980 the railcar was restored in the SBB workshop in Zurich and has since been listed as an operational, historical vehicle at the SBB. When SBB Historic was founded , it became their property. The steam railcar has been looked after and operated by the Zurich Steam Group since 2005. The railcar is normally housed in Depot F in Zurich.

The not quite optimal weight distribution known for the Kittel steam railcars with the A1 wheel arrangement and the short wheelbase as well as the track structure of the former UeBB, which was not very well maintained for reasons of economy, led to the steam railcar derailing one time or another. Other major incidents, with the exception of the collision that took place on February 20, 2016 during an extra trip with a ballast wagon protruding into the profile, have not been recorded.

literature

Web links

Commons : UeBB CZm 1/2  - Collection of images

Individual evidence

  1. ↑ Chapter 2.8 Description of the steam railcar , in Werner Willhaus: Kittel steam railcar - innovation in local transport 100 years ago . EK-Verlag, Freiburg 2008, ISBN 978-3-88255-106-8 , page 38, point d)
  2. ↑ Alfred Moser makes the statement