VR Class Sm1
| VR Class Sm1 | |
|---|---|
Two Sm1 units at Helsinki central railway station. The one at the background, 6086, is of the newer Sm2 class. | |
The refurbished interior of an Sm1. | |
| In service | 26 January 1969 – 9 April 2016 |
| Manufacturer | Valmet, Strömberg |
| Built at | Tampere, Finland |
| Constructed | 1968–1973 |
| Refurbished | 1994–2000 |
| Number built | 50 |
| Number in service | 0 |
| Number preserved | 2 |
| Number scrapped | 48 |
| Fleet numbers | 6001+6201 – 6050+6250 |
| Capacity | 191 passengers |
| Operators | VR Group |
| Lines served | Helsinki commuter rail |
| Specifications | |
| Train length | 53.25 m (174 ft 8 in) |
| Car length | 26,625 mm (87 ft 4.2 in) |
| Maximum speed | 120 km/h (75 mph) |
| Weight |
|
| Axle load | 18.8 t (18.5 long tons; 20.7 short tons) |
| Prime mover(s) | Strömberg GHAU H7226 |
| Power output | 4 × 215 kW (288 hp) |
| Safety system(s) | ATP-VR/RHK |
| Track gauge | 1524 mm |
The electric multiple unit Sm1 is a class of commuter train equipment that was in active use by VR from 1969–2016. Fifty Sm1 units were built between 1968 and 1973 at Valmet airplane factory in Tampere. They were put into use on the first electrified Finnish railway line between Helsinki and Kirkkonummi on January 26, 1969 with five units in operation. All Sm1s were thoroughly renovated between 1994 and 2000. Commercial service ended in April 2016.