ČSD series M 240.0
| ČSD series M 240.0 ČD / ŽSR series 820 |
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|---|---|
 M 240 0100 ( Railway Museum Lužná u Rakovníka , 2013)
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| Numbering: | M 240.001-0122 ČSD 820 001-120 ČD / ŽSR |
| Number: | 120 + 2 |
| Manufacturer: | Vagonka Tatra Studénka |
| Year of construction (s): | 1959 prototype 1963–1964 series vehicles |
| Retirement: | 2002 ČD 2001 ŽSR (railcar) |
| Axis formula : | 2 B' |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 18,500 mm |
| Empty mass: | 40.76 t |
| Wheel set mass : | 10.2 t |
| Top speed: | 70 km / h |
| Installed capacity: | 206 kW |
| Motor type: | Tatra T 930-4 / K |
| Power transmission: | hydrodynamic |
| Brake: | DAKO-P |
| Train control : | no |
| Seats: | 56 |
| Classes : | 2. |
The ČSD series M 240.0 (from 1988: series 820 ) is a four-axle diesel multiple unit for regional traffic of the former Czechoslovak State Railways (ČSD).
history
Two prototypes of the series were manufactured as M 230.5001 and 5002 by Vagonka Tatra in Studénka in 1959 . The M 230.5001 received a mechanical gearbox and the 12-cylinder Tatra T 930 engine with an output of only 170 kW. The second prototype M 230.5002 already received the further developed engine of the type T 930-4 / K with 206 kW power and a newly developed hydrodynamic transmission from ČKD . The prototypes were later adapted to the production vehicles and were given the numbers M 240.0121 and 0122. They were retired in 1983.
The 120 series vehicles were produced in two series in 1963 and 1964. The M 240.0109, 110, 118 and 119 railcars were fitted with a magnetic rail brake ex works for use on the Tanvald – Kořenov and Pohronská Polhora – Tisovec rack railway lines . In addition, the vehicle body was set 20 millimeters higher to ensure freedom of profile in the rack sections.
Appropriate sidecars of the type Balm, later Bix with the EDP-compatible series designation 020, were delivered to match the railcars, which corresponded to the railcars in structure and appearance. Due to the lack of driver's cabs, the sidecars at the ends offer excellent visibility for travelers.
The inward-opening flap doors, which release easily accessible stairs when opened, are striking. These allow passengers to change even on very low or in some cases missing platforms, as they were for a long time as a legacy of the Austro-Hungarian monarchy at many railway stations in Czechoslovakia. Open car transitions to be secured with scissor bars are integrated into the end walls. In the closed state, this results in a smooth outer skin without protruding parts. Motor coaches and sidecars are equipped with side buffers and screw couplings in a lightweight design. This means that they can be coupled with all regular vehicles, but they may only be set in trains at the end. This is also allowed in groups.
In the 1990s, the railcars reached the limit of their service life, so that the vehicles were finally retired by 2001 (ŽSR / ZSSK) and 2002 (ČD). A modernization was no longer considered. The departure depot was in particular Karlovy Vary, which used the railcars on the routes to Potůčky and Mariánské Lázně until 1997 . Some vehicles are preserved in museums.
As with several ČSD diesel multiple unit series, the sidecars, which can also be used as passenger coaches, have proven to be significantly more durable. 68 pieces were modernized in the 1990s. They received a new interior with individual seats, pivoting sliding doors and top-hung windows. The modernized sidecars were assigned to the 021 series, the generic symbol changed to Btx. Since the UIC vehicle numbers were changed in 2006, the sidecars have been given passenger car numbers. Their scheduled use ended in 2019, only a few vehicles are still available for a few special services, such as the T2 tourist line in Ústecký kraj.
See also
- List of locomotive and multiple unit series of the ČSD
- List of the ČD locomotive and multiple unit series
- List of locomotive and multiple unit series of the ŽSR
Web links
- Website for the M 240.0 series (Czech)