On Fri, 10 Feb 2017 17:07:09 +0000, Graeme Wall
wrote:
On 10/02/2017 16:50, Charles Ellson wrote:
On Fri, 10 Feb 2017 12:55:48 +0000, Graeme Wall
wrote:
On 10/02/2017 12:22, Anna Noyd-Dryver wrote:
Graeme Wall wrote:
On 10/02/2017 09:54, d wrote:
On Thu, 09 Feb 2017 19:42:06 +0000
Charles Ellson wrote:
On Thu, 9 Feb 2017 16:37:46 -0000 (UTC), Recliner
wrote:
wrote:
On Thu, 9 Feb 2017 16:04:47 -0000 (UTC)
Recliner wrote:
wrote:
The vast majority of freight is hauled by class 66 and 70 diesels and the
main electric freight loco the class 92 can run off 3rd rail anyway.
The main electric freight loco is the class 90. Class 92s are little used.
You sure about that? I thought the 90 was a passenger loco that only
occasionally did light freight because its built for high speed, not
pulling
power.
When did you last see a class 92 hauling anything? Most electric freight
are hauled by class 90s.
Class 92s tend to be seen with Channel Tunnel traffic, there is no
current reason for them to be preferred over straight 25kV locos away
from such traffic.
So there's no freight on southern region then?
Al diesel hauled round here, which is why they are discussing the
"electric spine" running 25kV from Reading to Southampton.
The problem with electric freight on 3rd rail is that the current drawn to
move a competitive-sized freight at a competitive speed, is very close to
the current at which the circuit breakers trip.
Which is why, I suspect, the 92s were never very useful.
That must be why can be seen hauling trains on the West London Line
south of North Pole Junction.
A far cry from their intended use.
How not ?
North of North Pole - 25kV
South of North Pole - 750V
Even further south - Dollands Moor and Channel Tunnel
Behind the loco - usually a block train, often formed of foreign
vehicles
A quick whizz through today's allocated (but not necessarily used)
freight paths through Shepherds Bush to Dollands Moor shows mainly
diesel haulage but trains from the same origin (usually Wembley or
Trafford Park) can be either diesel or electric hauled, possibly not
always as seen specified in RTT.