Stadler GTW

A European Stadler GTW electric car in Austria.

A US-spec Stadler GTW diesel car employed by the River Line light rail system.

The Stadler GTW, sold by Stadler Rail, Switzerland, is one of the best-selling articulated local transport railcars in Europe. The name GTW stands for Gelenktriebwagen (articulated railcar).

More precisely, Stadler GTW is actually a whole family of vehicles which differ externally, in the various designs of the head of the vehicle (from angular to streamlined), and also in the different designs and power units that drive them. They also come in different gauges and as rack railway vehicles. The basic version is the GTW 2/6, a railcar which conforms to UIC standards. "2/6" means "two of six axles are powered". The GTW 2/6 is used for example by Deutsche Bahn as Baureihe 646 (Series 646) and by Swiss railways as RABe 526.

The basic concept is rather unconventional: the car is driven by a central "power module", also known as a "powerpack" or a "drive container", powered on both axles. Two light end modules, each with a bogie, rest on the power module, which produces useful traction weight on the driving axles. The end modules also use the space very effectively, although the railcar is divided into two halves by the power module. Some units have a path through the drive container. The end modules can be delivered with standard pulling devices or buffer gears, or with central buffer couplings. They are built with a low-platform design except above the bogies and at the supported ends (more than 65% low-platform). All of the usual comforts to be expected in a modern local network railcar are provided, such as air conditioning, a multi-purpose room, vacuum toilets (in a washroom suitable for the disabled) and a passenger information system. The GTWs can be diesel or electric-powered (via overhead wires or third rail).

Propulsion

There are diesel propulsion modules with 550 kW (since 2003) with 2x375 = 750 kW power available, and electric propulsion modules with 600 kW to 1,100 kW. All drive modules work with IGBT pulse inverters. The converter plant stems from ABB and Turgi manufactured at the site.

By inserting a middle car (also with only one bogie) on one side of the propulsion module, the GTW 2/6 is expanded to GTW 2/8. Instead of the middle car, another drive module can also be inserted. Between the two modules are then either a trailer passenger car (GTW 4/8) or two medium cars and partitions (GTW 4/12). For operational flexibility up to four GTWs of the same pattern can be operated as a multiple unit.

North American application

New Jersey Transit uses 20 GTW diesel light rail vehicles on the 34 mile River LINE (New Jersey Transit) service between Trenton and Camden. The diesel LRV offers a tighter turning radius than typical main line light rail vehicles (i.e. Siemens Desiro, Bombardier Talent, etc.) and thus is capable of street running. The basic GTW is the 2/6 which indicates that two of the six axles are powered. The vehicle is more than 65% low floor. The GTW is available in electric and diesel-electric versions. 390 units have been sold to date and are in use in Italy, the Netherlands, and Switzerland. The Austin, Texas Capital Metro is expecting delivery of six vehicles in the fall of 2007 for its new transit rail service. In Texas, the diesel-electric units will provide service on a 32 mile route between Austin and Leander starting in January 2008.

The River LINE in New Jersey was opened in May 2004. The service is operated by the Southern New Jersey Rail Group (SNJRG), a consortium of Bechtel Group and Bombardier. The 20 stations on the line include PATCO Speedline’s Broadway Station, which allows for transfers to service to Philadelphia. The River LINE uses a proof of payment system with a flat fare of $1.35. Service is offered on a 15 minute peak headway and 30 minute off peak headway. Much of the line is single track with passing sidings.

First Year of Service	2004
Manufacturer	Stadler Bussnang AG
Gauge	1435 mm (4’ 8½”)
Axle arrangement	2-Bo-2
Passenger capacity	70 standard; 20 fold-up seats; 94 standees
Weight (AW0)	54.8t (120,600 lbs)
Length	31,242 mm (102’8”)
Width	3,000 mm (9’10”)
Height	3,911 mm (12’10”)
Floor height	584 mm (low floor, 1’10”); 999 mm (high floor, 3’3”)
Door width	1,300 mm (4’3”)
Carbody material	extruded aluminium for passenger compartment; steel in power compartment
Buff strength	1,386 kN (310,826 lbf)
Maximum Speed	70 mph (112 km/h)
Maximum acceleration at gross weight	0.9 m/s/s (2.0 mph/s)
Maximum braking rate	2.0 m/s/s (4.5 mph/s)
Minimum horizontal turning radius	132 ft
Prime mover	MTU 550 kW (753 hp) engine; 400 kW output at wheel
Starting tractive effort	70 kN (15,700 lbf)
Traction system	Electric drive: three phase generator-rectifier set; air-cooled IGBT converter; two asynchronous AC traction motors
Approximate cost per unit	$3.6 million in 2004
OPTO features	Present

See also

• River LINE (New Jersey Transit)
• Articulated car
• Capital MetroRail
• Jacobs bogie

Source

This article was partly translated from the German language version of April 2006.

External links

• German-language page with photos of different versions
• Stadler Rail
• GTW (private Site)