"Clive" wrote in message

In message
,
Mizter T writes

On Jan 30, 2:53 pm, "Basil Jet"
wrote:

MIG wrote:
This morning I've seen a three-unit train running on the DLR, with
the designation "Special", in between other services.

How many people does a three-car DLR hold, and how does that
compare with a six-car C stock? How does the speed compare? I'm
wondering about whether the "light" railway designation still means
anything.

Closely spaced stations and lots of rapid acceleration and
deceleration are light rail-esque features in my mind.

Not that I'd want a rail vehicle of any kind, light or heavy, to fall
on my head - it's a rather relative term, me thinks!
I've always assumed the difference to be in the weight of the running
rail.

But surely a tram is still an LRV, even if it's running on standard
track, as happens on at least some parts of Manchester Metrolink, Tyne &
Wear Metro and Croydon Tramlink? And does the DLR use lightweight
rails?

In message , Recliner
writes
does the DLR use lightweight
rails?
I would have thought so, I must be cheaper to use 70 lbs a yard steel
than 120 lbs a yard steel in base product alone before any pre-forming
takes place.
--
Clive

On 03.02.10 16:32, Clive wrote:
In message , Recliner
writes
does the DLR use lightweight
rails?
I would have thought so, I must be cheaper to use 70 lbs a yard steel
than 120 lbs a yard steel in base product alone before any pre-forming
takes place.
What do you mean by base product?

In message , "
writes
I would have thought so, I must be cheaper to use 70 lbs a yard steel
than 120 lbs a yard steel in base product alone before any pre-forming
takes place.
What do you mean by base product?
Steel bar to be converted into rails.
--
Clive

"Clive" wrote in message
...
In message , "
writes
I would have thought so, I must be cheaper to use 70 lbs a yard steel
than 120 lbs a yard steel in base product alone before any pre-forming
takes place.
What do you mean by base product?
Steel bar to be converted into rails.
--
Clive


I'd like an accountant/quantity engineer/etc to chime in here, but AIUI, the
steel for the rails is such a small percentage of the cost that to skimp on
this may increase life cost due to rail maintenance and transfer of higher
incident loads to the substructure.

DW down under

On 03.02.10 19:47, Clive wrote:
In message , "
writes
I would have thought so, I must be cheaper to use 70 lbs a yard steel
than 120 lbs a yard steel in base product alone before any pre-forming
takes place.
What do you mean by base product?
Steel bar to be converted into rails.
Billets, you mean.