原帖由 小早川優 於 2009-11-27 09:08 發表
that's the case these 2-axle double deckers would be better suited forlonger distance routes in which the passengers are less willing tostand for the whole journey. A 11.0~11.1m E400 Trident/B9TL with spiralstaircase should have more or less the same seating capacity as ATE(U51+L25+3 seats above the front wheels+1 more seat for the existing「自閉位」on the 40xx = 80 seats).hkitalk.net9 A: y4 w2 t9 X5 ^; F
The problem still go back to the weight though. Now we have the weight of the E400(HK), which, with the air-cond and stuff, is around 2,000kg heavier than the E400(UK). This additional weight will only go up - not down - as the bus gets longer, while at the same time, with only 2-axle its Gross Weight (GVW) will stay the same. So the only thing that comes down is the payload it can take.
Put it this way. Lothian Bus of Edinburgh has a fleet of 11.4m B9TLs, which has an empty weight of around 12,600kg. For an equivalent size E400(HK), the empty weight, including air-cond etc, will probably be around 14,300kg. That means if it is licences up to the GVW of 18,000kg, its legal payload will be only 3,700kg. If we take an average body weight is 60kg (132lb), then the legal capacity of that version of the E400(HK) is just 60 people - not even enough to fill up the seats it could technically carry (A 2-axle dual-door B9TL of that length can take around 75 seats)!
Empty weight of the bus is a key factor on how much the bus can be stretched. The B9TL, B7TL, Trident and N-series manage that in the UK only because they don't have to carry the air-cond, leaving enough payload weight to justify a stretch. The E400(HK), or any 2-axle double decker that might come in the future, can't do that as long as they have air-cond in place.