Talgo double-decker offers gangways on both decks
FINNISH company Talgo Oy is offering a novel design of double-deck EMU to Finnish Railways and Swiss Federal Railways. Describing the design as 'the first real double-decker', Talgo says that its concept makes better use of space than conventional double-deck trains. Traction equipment would be supplied by Elin of Austria.
Of particular interest is the ability to offer gangways on both upper and lower decks; there are no steps between cars. The inter-car connection uses the standard Talgo design with high-level air suspension elements over the steerable stub axles, with a central gangway for the lower deck between the suspension units. The upper deck has a wide gangway between the structural elements of the bodyshell, which rests on the high level suspension at the ceiling height of the lower floor. Talgo says that a 2m internal height can be provided for both decks.
Body length of the intermediate cars is 7·5m, compared to 13 m for single-deck Talgo designs, giving a 54m length for a five-car set with two power cars, as proposed for a fleet of 20 trains for Helsinki suburban services. In this case body width would be 3·3m. The proposal for Swiss Federal Railways envisages a fleet of 35 sets of 10 cars, each with an overall length of around 100m and a car width of 2·97m.
Both designs would use a three-axle power car with a power bogie at the outer end, where all traction equipment would be concentrated. A doorway with a boarding height of 550mm above rail top would be provided at one end of each intermediate car, where a single stairway would give access to the upper deck.
An option would see the bodyshells manufactured from composite materials using material developed by fellow Finnish company Fibrocom.
CAPTION: Artist's impression of a Finnish double-deck EMU in Helsinki