DR series ET 166
| DR series ET 166 DR series 276 |
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|---|---|
 |
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| Numbering: | DR ET / EB 166 001-034 |
| Number: | 34 |
| Year of construction (s): | 1936 |
| Retirement: | 2000 |
| Axis formula : | Bo'Bo '+ 2'2' |
| Genre : | C4 + BC4 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over coupling: | 35 560 mm |
| Service mass: | 68.7 t |
| Friction mass: | 38.5 t |
| Wheel set mass : | 9.5 t |
| Top speed: | 80 km / h |
| Hourly output : | 360 kW |
| Continuous output : | 264 kW |
| Acceleration: | 0.3 / 0.5 m / s² |
| Driving wheel diameter: | 900 mm |
| Impeller diameter: | 900 mm |
| Wheel diameter: | 900 mm |
| Power system : | 750 V = |
| Power transmission: | Lateral power rail coated from below |
| Number of traction motors: | 4 (type GBM 700, four-pole series DC motors (375 V at 267 A)) |
| Type of speed switch: | Pump position * - maneuvering forwards - maneuvering backwards - driving forwards with half acceleration - dto. With full acceleration |
| Brake: | Single-release Knorr passenger train brake, multi-release due to electrical control |
| Control: | Cam switch mechanism, driven by el-pn latch mechanism |
| Seats: | 118 |
The class ET 166 (class 276.0 of the DR ) were electric railcars for operation in the direct current network of the Berlin S-Bahn and generally known as "Olympia" trains. They were purchased as the successor to the ET 165 series from 1935 for the Summer Olympics in Berlin that took place the following year and - in the modernized form as BR 477/877 - were on the Berlin light rail network until 2003.
history
In 1935, 34 two-car units were added in order to cope with the number of visitors expected at the 1936 Summer Games as well as the increased traffic as a result of the opening of the first section of the north-south S-Bahn tunnel from Stettiner Bahnhof via Friedrichstrasse to the new Unter den Linden S-Bahn station (Quarter trains) of this series ordered. In terms of the basic operational concept, they corresponded to the Stadtbahn wagons, later designated as the ET / EB 165 series , and their further development, the Wannsee type Stadtbahn wagons delivered in 1932/33 (from 1941 ET / EB 165.8). In terms of car construction, the cars with the rounded cab fronts and the car bodies lengthened over the head pieces correspond almost completely to the series ET / EB 125 cars delivered at the same time for the "banker's trains" . The car body and bogies (now with a 2.6 meter wheelbase, instead of 2.5 meters, as with the predecessors) were completely welded constructions. Characteristic of the Olympic (from 1941 as the ET / EB 166 series) and banker trains was the flap over the coupling on the front of the driver’s cab, which reduced the cutout for the coupling. The installation of the contact sets ("piano"), in which this flap should be omitted, was originally planned, but only happened with the reconstruction in the 277 series from the end of the 1970s (here with the conversion of the complete dome box with complex adaptation of the head carrier) . The bogies with an enlarged wheelbase did not prove themselves to the desired extent, so they were gradually replaced by the standard design with a wheelbase of 2.50 meters. Due to the war and post-war events, some of the bogies with a 2.60 m wheelbase ran into the 1980s.
At the end of the war, a few quarter trains were waiting for repairs in the Reichsbahn repair shop in Schweidnitz in Silesia and later made their way to the Danzig S-Bahn . Others were deported to the Soviet Union and did not return to Berlin.
In 1949 all trains in the DR series ET 125 were technically adapted to the series ET 166. They received the new numbers ET 166 035-052. The same thing happened in 1966 with the remaining trains of the former Peenemünde factory railway , which from then on bore the numbers ET / ES 166 054-060.
From the construction of the Wall in 1961 to the Berlin S-Bahn strike in 1980, the ET / EB 166 series cars were almost exclusively on the West Berlin S-Bahn network, especially on train groups 1, 1a (today S 1), H and L ( today S 3) in action. After the strike, the ET / EB 166 wagons, since 1970 as the 276 series, with the beginning of the reconstruction of the 275 series wagons as the 276.0 series, in the course of the conversion in the Schöneweide district to the 277 series, later 477/877 classified. The four quarter trains of the banker's test train of the type 1934 due to the different floor frames and two Peenemünde quarter trains were excluded.
Up to the end of the 1980s, some of the BR 276.0 trains still existed in their original condition and mainly ran on special-purpose train groups during rush hour. A quarter train of the “Olympia” railcars has been preserved to this day with the original bogies on the Gdansk S-Bahn SKM (parked in Gdynia ), but its processing is uncertain (ex EW92-03 s / d, ex ET / EB 166 034 ; Opening train of the north-south S-Bahn tunnel).
literature
- Historic S-Bahn eV (Hrsg.): Trains of the Berlin S-Bahn. The elegant round heads . GVE, Berlin 2003, ISBN 3-89218-477-1 .
- Martin Pabst: U- and S-Bahn vehicles in Germany . 1st edition. GeraMond, Munich 2000, ISBN 3-932785-18-5 .
- Daniel Riechers: S-Bahn multiple units - New vehicles for Germany's urban express traffic . 1st edition. transpress Verlag, Stuttgart 2000, ISBN 3-613-71128-1 .
