The X1 was based on the SJ X6 taken into service in the 1960s, that had replaced locomotive-pulled trains. The X1 interior was based more on the Stockholm Metro with five-abreast seating and three doors per car. Since the start in 1968 the trains were renovated several times, although they retained mostly the same appearance as they did in the 1960s. An X1 train was used as a test train during the development of the high speed train X 2000, with technologies and techniques such as tilt being added, that would later make it into the final train (X 2000). With these adjustments, this X1 train managed to reach a speed of 222 km/h during testing, which was a new record for the train.1 They were completely compatible with the X10 introduced in the 1980s. The X1 began to be taken out of service in 2004 and was planned to be completely retired in 2007/2008. Due to problems with the new X60 trains the deadline was delayed several times. The last X1 units were taken out of service in April 2011.
Unit 3019 is preserved at the Swedish Railway Museum in Gävle.2 Part of unit 3020 is preserved at the Spårvägsmuseet in Stockholm.
[a b c d e] Nordin, Tore (2003). Svenska Elmotorvagnar. Stockholm: Svenska Järnvägsklubben. ISBN 91-85098-97-3 ↩
"Järnvägsmuseet Fordonslistor" (PDF). www.jarnvagsmuseet.se. 2018. Retrieved 12 November 2022. https://www.jarnvagsmuseet.se/globalassets/jarnvagsmuseet/dokument/samlingar/fordon/t_fordonslistor_jarnvagsmuseets-stjarnor.pdf ↩