| Dm6, Dm7 | |
|---|---|
 Dm7 multiple units at Jyväskylä railway station in 1987 | |
| In service | 1954–88 |
| Manufacturer | Valmet |
| Constructed | 1954–63 |
| Number built | 15 (Dm6) 197 (Dm7) |
| Number preserved | 21 |
| Fleet numbers | 4000–4014 (Dm6) 4020–4216 (Dm7) |
| Capacity | 64 passengers |
| Operators | Valtionrautatiet |
| Specifications | |
| Car length | 16,660 mm (54 ft 7+7⁄8 in) |
| Width | 3,100 mm (10 ft 2 in) |
| Height | 3,400 mm (11 ft 1+7⁄8 in) |
| Maximum speed | 95 km/h (59 mph), later 115 km/h (71 mph) |
| Weight | 15–18 t (14.8–17.7 long tons; 16.5–19.8 short tons) |
| Prime mover(s) | Valmet 815 D |
| Power output | 130 kW (170 hp) |
| UIC classification | (1A)′(A1)′dm |
| AAR wheel arrangement | 1A-A1 |
| Track gauge | 1,524 mm (5 ft) |
The Dm6 and Dm7 were diesel multiple units built by Valmet in the 1950s and 1960s for Valtionrautatiet.[1] They are known by their nickname lättähattu (Finnish for "flat cap", the first widespread youth culture movement in Finland).[2]
- ^ "Dm7" (in Finnish). Suomen Rautatiemuseo. Retrieved 6 June 2011.
- ^ Kiiskinen & Ahonen 1996, p. 123.