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 renovated 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 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	58.6 t (57.7 long tons; 64.6 short tons) (Sm1) 35.6 t (35.0 long tons; 39.2 short tons) (Eiob)
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

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.^[1] They were put into use on the first electrified Finnish railway line between Helsinki and Kirkkonummi on January 26, 1969^[2] with five units in operation. All Sm1s were thoroughly renovated between 1994 and 2000. Commercial service ended in April 2016.