The Sm2 is a class of electric multiple units in use by VR in commuter traffic in the Helsinki area. Fifty Sm2 units were built between 1975 and 1981 by

Valmet Valmet Oyj is a Finnish company and a developer and supplier of technologies, automation systems and services for the pulp, paper and energy industries. Valmet has over 200 years of history as an industrial operator. Formerly owned by the S ...

Tampere Tampere ( , , ; sv, Tammerfors, ) is a city in the Pirkanmaa region, located in the western part of Finland. Tampere is the most populous inland city in the Nordic countries. It has a population of 244,029; the urban area has a population o ...

. All Sm2 units were completely renovated between 2002 and 2011. Only the bodywork and the technics remained mostly untouched. Many of the changes are visible to the passengers, including a different type of seat, modern toilets and a new livery consisting of a white bodyside with a green lower band.

Technical information

Like the Sm1, each Sm2 unit consists of two cars: the Sm2 is the motored car of the multiple unit, while the other car, the driving trailer, is a part of the Eioc class. The units are numbered from 6051 to 6100 for the Sm2 motored car and 6251 to 6300 for the Eioc driving trailer. The train can be driven from both ends, which is a major advantage compared to locomotive-pulled trains in commuter traffic. Sm2s can be coupled together with Sm1s forming trains of at most six units (12 cars), but the length of the commuter train platforms limits the maximum length to five in commercial traffic. The full length trains can be seen in depot traffic in the morning and evening. The units use Scharfenberg couplers. The Sm2 is technically very similar to the older Sm1 EMU, although there are also some differences, such as the Sm1 having steel spring suspension and strengthening creases on the sides. The bodywork is also made of aluminium, as opposed to steel in the Sm1. The maximum speed of the unit is . The electric systems were developed and built by Strömberg at their plant in Pitäjänmäki,

Helsinki Helsinki ( or ; ; sv, Helsingfors, ) is the capital, primate, and most populous city of Finland. Located on the shore of the Gulf of Finland, it is the seat of the region of Uusimaa in southern Finland, and has a population of . The city ...

References

;Literature *

External links

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Pictures of the train at Vaunut.org
{{DEFAULTSORT:Vr Class Sm2 Sm2 Sm2