Dennis Trident 2
A Dennis Trident 2 with Alexander ALX400 body
Manufacturer	Dennis /TransBus/Alexander Dennis
Built at	Guildford, England
Replaced	Dennis Arrow
Operator(s)	Stagecoach FirstGroup and others
Specifications
Length	2-axle Trident: 9.9m, 10.5m, 10.6m, 11.4m Enviro400: 10.1m, 10.8m
Width	2.55m
Floor type	Low floor
Doors	1 or 2 door
Engine(s)	2-axle Trident: Cummins C-series/ISCe Enviro400: Cummins ISCe/ISBe
Power output	Cummins C-series: 220hp, 245hp Cummins ISCe: 225hp, 260hp Cummins ISBe: 250hp (diesel), 185hp (hybrid)
Transmission	Voith/ZF
Options	Various customer options

For 3-axle, longitudinal-engine Dennis Trident built for export, see Dennis Trident 3/Dennis Trident E500.

Dennis Trident 2 (marketed as Dennis Trident, but once known as TransBus Trident 2/TransBus Trident) is a 2-axle low-floor double-decker bus chassis originally built by Dennis in the United Kingdom, which was unveiled in 1997 and replaced the Dennis Arrow. It was built by TransBus after Dennis was incorporated into the group in 2001 (the Dennis brand name was once dropped). From 2004, it was built by Alexander Dennis.

The Trident 2 chassis features a transversely mounted engine, with the radiator mounted on the left side of the engine compartment. It could be fitted with Cummins C-series Euro II engine (later Cummins ISCe Euro III engine), coupled to Voith or ZF gearbox. Trident 2 was available with Alexander ALX400, Plaxton President and East Lancs Lolyne/Myllennium Lolyne bodywork.

In the first few years of production, Trident 2 was popular in the United Kingdom, with a large number sold to large bus operators such as Stagecoach, First Group, Travel West Midlands and Lothian Buses. Some of the Tridents were exported to Ireland (for Dublin Bus ^[1]) and Spain (for sightseeing operations in Barcelona and Madrid). But later, due to increased competition after the launch of Scania OmniDekka and TransBus being put into administration, the sales of Trident 2 dropped significantly, leaving Stagecoach as its major buyer.

In 2005, Alexander Dennis developed the new version of Trident 2 chassis for its Enviro400 double-decker. Marketed as the Enviro400 chassis, the name "Trident 2" continued to appear on the manufacturer's plate ^[2] and it retained the Cummins ISCe Euro III engine (soon replaced by Cummins ISBe 6-cylinder Euro IV) and Voith/ZF gearbox, it also received a number of modifications such as a longer front overhang, with a different shape of fuel tank became available. Production of the older version of Trident 2 chassis continued until 2006, with the newest example being delivered to Isle of Man Transport.

The new version of Trident 2 chassis was also available with Darwen/Optare Olympus bodywork, the first example was delivered to CT Plus of London in 2008.

In 2008, Alexander Dennis unveiled the hybrid-electric powered version of Trident 2 (the Enviro400H) using BAE Systems's HybriDrive series drive system with Cummins ISBe 4-cylinder engine fitted for power generation. ^[2]

[edit] References

[edit] See also

• 7 July 2005 London bombings - in which a Stagecoach London-owned Trident 2 was destroyed

Competitors:

• Scania OmniDekka
• VDL DB250
• Volvo B7TL

[edit] External links

Wikimedia Commons has media related to: Dennis Trident 2

• Product description in Alexander Dennis official website
• Product description of Enviro400 hybrid from BAE Systems

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