Do you mean that the AC buses in Delhi and Bangalore are different? They appear the same. Is it logical to think that Tata would adopt two different platforms for the same A/c city bus which will be against the ‘economies of scale’? Also buses for both cities are manufactured in the Dharwad Plant. So is it profitable to keep two lines of production?
First: Yes. The buses in Delhi and Bangalore are entirely different. Here are the major differences:
The ones in Delhi are Low Floor buses (no-steps), while the ones in Bangalore are Semi-LF buses (One Step).
The ones in Delhi are powered by 230hp rear mount CNG Engines (AC) while the ones in Bangalore are powered by a 180hp rear mount diesel engine.
Why would it be not logical? As far as Tata-Marcopolo is concerned, its only a body builder. As far as TATA Motors are concerned, their output is 'x' number of Chassis. For a body builder, the overall design is the same - they use the same mould for the front and the back. The sheet work on the sides are exactly the same, except for the design of the windows.
What is the flaw in the ‘Low Floor’ buses of TM?. If it is so, why are they running without any problem in Delhi?
Did I say there was a flaw in the Low Floor buses in Delhi? My post only said it did not click with BMTC - now an STU rejecting a bus need not be exclusively on technical grounds. (You should surely know, there are lot of other considerations that go behind each STU order).
I am not gone inside a TM, both ac and non ac, but from outside, it appears to me that a/c TMs are without steps. You can say that it is not the steps but the floor height from floor which determines whether it is low floor or not. In that case, since non ac TM is still higher with steps, I wonder how can both be termed semi-low floors.?
The non-AC semi low floor buses have two steps, while the AC semi-Low floor has only one step. The reason is simple. The engine being at the rear end, the AC buses have a lower saloon floor height to the front (where all the steps are located), while the rear saloon is higher (exactly the same height as the floor of the non-ac semi low floors).