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GMB Class 71 is an electric multiple unit used by Flytoget for the Airport Express Trains on the Gardermoen Line of Norway. Sixteen three-car train sets were built by Adtranz Strømmen between 1997 and 1998. The units are capable of , connecting Oslo Central Station and other stations in Metropolitan Oslo to the Oslo Airport, Gardermoen, along Norway's only high-speed railway. In a three-car configuration, the units weigh and are long, with a power output of . The units are similar to the NSB Class 73, and are related to the Swedish X2 units. By 2009, all units were expanded with a fourth car. ==Specifications== The unit is based on the Swedish X2 designed by Kalmar Verkstad in the 1980s, and delivered from 1990 to the Swedish State Railways for use in their X 2000 high-speed intercity trains. Although the technology involved is similar, like spot-welded stainless steel car bodies, the Class 71 differs in several ways. First, the unit does not have a separate locomotive unit, but has the motors spread throughout the train, with one powered and one unpowered bogie in each car. The car bodies are totally different in layout, including the doors between bogies instead of at the end of the cars. In addition, the trains are pressure tight to increase comfort for passengers while passing through tunnels. They also have hydraulic couplers at the ends, which are hidden behind covers when not used. The Class 71 is also shorter, with only three cars, and does not have any tilting technology installed. The exterior design, especially the nose, is quite different. Norges Statsbaner later took order of 22 units of the Class 73, that is almost identical, but has four cars and tilting technology. Class 73's pantograph is pivoted in order to keep it centred under the catenary when the body tilts. Each train has a power output; this is an unusually high power to weight ratio for trains with that maximum speed. The units use the standard Norwegian voltage of . Up to four units can be run in multiple, creating 12-car (or 16-car after the upgrade) trains. However, the trains normally only operate as single or double units, limiting the length to eight cars. End cars are and weigh , while center cars are and weigh . The pantograph is located on the center car. Each unit has 168 seats, that are built modally so that the seating can be reconfigured. The sixteen units cost . During construction, the weight had increased from 149 to 170 tonnes; to reduce this to 158 tonnes, the original idea of step-free access was discontinued. Instead, a wheelchair lift was installed, but it proved not to work. The area around the doors are step-free from the platform, but within the trains steps must be taken to reach the seating area.〔 The Norwegian Federation of Organisations of Disabled People have criticized Flytoget for ordering identical additional cars that will not ease access for the disabled. The Class 71 is capable of speeds up to , compared to in the original. This speed was chosen to make it possible to get from Oslo Central Station to Oslo Airport, Gardermoen in less than 20 minutes. The signalling system ATC-2 is built for 200 km/h, and could not be adopted for much more than that. The three car units (resp. four car units) can only be separated at a railway workshop, and are never used in anything but their native car configuration.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「GMB Class 71」の詳細全文を読む スポンサード リンク
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