SBB Re 4/8 311
| SBB Re 4/8 311 | |
|---|---|
| Numbering: | 311 |
| Number: | 1 |
| Manufacturer: | SLM , MFO , BBC |
| Year of construction (s): | 1941 |
| Retirement: | 1962 |
| Axis formula : | Bo'2 '+ 2'Bo' |
| Gauge : | 1,435 mm |
| Length: | 46,600 mm |
| Height: | 4,280 mm |
| Service mass: | 84 t |
| Friction mass: | 42.4 t |
| Top speed: | 125 km / h |
| Hourly output : | 840 kW at 96 km / h |
| Continuous output : | 710 kW at 104 km / h |
| Starting tractive effort: | 52 kN |
| Hourly traction: | 32 kN at 96 km / h |
| Wheel diameter: | 900 mm |
The railcar Re 4/8 311 was a two-part railcar of the SBB . It emerged from the Re 8/12 501 multiple unit after a fire .
prehistory
→ Main article: SBB Re 8/12 501–502
In the early morning of August 14, 1939, the Re 8/12 501 multiple unit caught fire in the Rorschach depot - a year and a half after it was put into operation . Since the train could not be driven outside, it suffered severe damage. These were so heavy with one end car that only a two-car train could be rebuilt with reasonable effort. A newly built driver's cab was therefore added to the middle car on the side of the small passenger compartment. The bogies could no longer be used and were therefore rebuilt using the same design. The motor bogies were installed under the driver's cabs, so that two identical railcar parts with the axle arrangement 2/4 were created. The following were left in railcar I:
- Pantograph
- Roof protection
- Transformer with control
The gear ratio has been changed from 1: 2.64 to 1: 3.17. The top speed changed from 150 km / h to 125 km / h. This increased the speed of the motors and therefore increased their own ventilation. This made it possible to use the railcar on steeper routes. The renovation was carried out by the main workshop in Zurich . Due to the increasing scarcity of materials, the train could not be put back into operation until September 1941.
Note on naming convention
The railcar described has been renamed several times. The title of this article uses the designation at the time of commissioning.
Source
- Hans Schneeberger: The electric and diesel traction vehicles of the SBB . Volume I: years of construction 1904–1955. Minirex AG, Lucerne, ISBN 3-907014-07-3 .