In message <1tp6bzatxuq4n.1v7gnvwg21vkj$.dlg@40tude.net>, at 16:10:03 on 
Sun, 3 Aug 2008, Chris Tolley  remarked:
>> The through platform at Cambridge needs extending by about half a
>> carriage (either end) to accommodate 12-car trains in the Thameslink
>> plan [maybe they were originally designed for a loco +10]. But if they
>> are thinking of running 12-car trains then presumably these will be made
>> of 4-cars from Kings Lynn joining the rear of a fresh 8-cars, and the
>> northern half of the platform will therefore be blocked by this
>> operation for five minutes. [And the converse in the evening].
>
>How about building another platform, as at Wolverhampton and Rugby, or
>is there something sacred about the Cambridge layout?

There are apparently plans for an island platform, but that may be more 
because they want to shift the terminus a couple of miles north to 
Chesterton Sidings.
-- 
Roland Perry

In article <eo+2$IenFelIFACi@perry.co.uk>, roland@perry.co.uk (Roland
Perry) wrote:

> In message <1tp6bzatxuq4n.1v7gnvwg21vkj$.dlg@40tude.net>, at 
> 16:10:03 on Sun, 3 Aug 2008, Chris Tolley  
> remarked:
> >> The through platform at Cambridge needs extending by about half a
> >> carriage (either end) to accommodate 12-car trains in the Thameslink
> >> plan [maybe they were originally designed for a loco +10]. But if
> >> they are thinking of running 12-car trains then presumably these 
> >> will be made of 4-cars from Kings Lynn joining the rear of a fresh 
> >> 8-cars, and the northern half of the platform will therefore be
> >> blocked by this operation for five minutes. [And the converse in
> >> the evening].
> >
> >How about building another platform, as at Wolverhampton and Rugby, or
> >is there something sacred about the Cambridge layout?
> 
> There are apparently plans for an island platform, but that may be 
> more because they want to shift the terminus a couple of miles 
> north to Chesterton Sidings.

No, it's because of the plan to run 12 cars on West Anglia. While there
is or soon will be capacity for through 12 car trains (for a minimal
extension of platform 1 and a slightly greater extension of platform 4)
there is just no way of terminating the Liverpool St service, which uses
platforms 2 and 3 pretty well entirely, if it comprises 12 car trains,
without extra platforms.

-- 
Colin Rosenstiel

In message , at 
20:54:00 on Sun, 3 Aug 2008, Colin Rosenstiel  
remarked:
>> There are apparently plans for an island platform, but that may be
>> more because they want to shift the terminus a couple of miles
>> north to Chesterton Sidings.
>
>No, it's because of the plan to run 12 cars on West Anglia. While there
>is or soon will be capacity for through 12 car trains (for a minimal
>extension of platform 1 and a slightly greater extension of platform 4)
>there is just no way of terminating the Liverpool St service, which uses
>platforms 2 and 3 pretty well entirely, if it comprises 12 car trains,
>without extra platforms.

Why can't they terminate at Chesterton Parkway?
-- 
Roland Perry