Dennis Trident 3
Dennis Trident 3 (marketed as 3-axle Dennis Trident), is the first low floor tri-axle double-decker bus chassis built by Dennis in the United Kingdom, with a large number purchased by bus companies in Hong Kong, Singapore, the United States and Canada. Design The Trident 3 chassis was developed from Dennis Lance. It had a longitudinally-mounted rear engine, with a radiator mounted on the right hand side of the engine. An auxiliary axle was mounted behind the second axle to cope with the weight at the rear and reduce the rear overhang. Trident 3 was available in 4 different body lengths: 10.3m (specially designed for New World First Bus), 10.6m, 11.3m and 12m. It could be fitted with Alexander ALX500 or Duple Metsec DM5000 bodywork with either a closed top or an open top. Engine The engines used for these double-decker buses were all manufactured by Cummins. Earlier models use the M11-305E, a 305 hp engine which complies with Euro II standards, or an ISM-330 330 hp engine for the buses delivered to North America. The M11-305E engine was replaced by the Cummins ISMe Euro III-standard engine in 2001. A 330 hp version (the ISMe330) was used initially, but later models