>Rather unique is a polite way of saying over engineered - the use of
>constant tension overhead with ugly counterweights, Manchester style
>oversized support poles and double contact wires (also oversize) for on
>street running is hardly good practice
Since the overhead is a critical single point of failure for an LRV,
its difficult to see why providing robustness and some degree of
redundancy in that area is "over engineering" or not a suitable
practice.
> and compares poorly with Melbourne's Bourke Street Mall installation.
As I recall, Bourke Street Mall is set up for both trolley pole and
pantograph operation and is necessarily of a type of construction
which suits trolley poles. The Met's methods probably do represent
best practice for their circumstances, but these are not the
circumstances in Sydney and it seems to me that Sydney has adopted
best practice for its circumstances.
Cheers,
Bill
Bill Bolton billbolton@acslink.net.au
Sydney, Australia