Fortsätt till huvudinnehåll

Mark 3 refurbishment

Chiltern Railways puts refurbished Mk III coaches into service

That is more like it. And now there is a need for a further fleet of compatible vehicles and the electric and diesel locomotives to haul them. The Irish mark 3 fleet should help a little and then there is a need for a new build.

What should they be like? The 23 metre length of the mark 3 stock was based on the assumption that the 2.74 external width of the mark 1 stock was acceptable. This was achieved by tapering the vehicle ends and recessing the door handles. It was not built to the full width of the loading gauge, unlike the sliding-door derivatives of the mark 3 stock such as the class 150 DMU which are 20 metres long and a nominal 2.82 metres wide, the absolute maximum permissible. These latter vehicles are regarded as the only go-anywhere type on the system. So perhaps a slightly shorter and wider vehicle would be possible, enabling it to go anywhere whilst at the same time helping to accommodate the present obesity epidemic.

Probably the best feature of the mark 3 is the constructional system, which means that the bodyshell is light and strong, and that the sides are thin, thereby maximising the internal space. Other features of the mark 3 stock which could have been better are the size, position and spacing of the windows, which obstruct the visibility from so many seats, and the detailed design of the entrance step, which can be hazardous at convex platform faces.

So what is needed is an improved vehicle developed from and compatible with the mark 3. Although primarily conceived for locomotive haulage, such a vehicle might also be used in a DMU, an EMU or even in the new stock for running on both HS2 and classic routes. It could also have export potential, thereby improving the economics of production.

Kommentarer

Skicka en kommentar

Populära inlägg i den här bloggen

Importing people to sustain demand

I got involved in a discussion with a Youtuber called “Philosophy all along”. This was in connection with criticism of Trump’s policy of deporting illegal migrants, which he argued would be bad for the economy as it would reduce demand. This implies that there is a need to import people to sustain demand. There is no obvious reason why a population should not be able to consume everything that the same population produces. If it can not, then something else is going on. It is a basic principle that wages are the least that workers will accept to do a job. Wages are a share of the value added by workers through their wages. The remainder is distributed as economic rent, after government has taken its cut in taxes. Monopoly profit is a temporary surplus that after a delay gets absorbed into economic rent. Land values in Silicon Valley are an example of this; it's like a gold rush. The miners get little out of it. Rent and tax syphon purchasing power away from those who produce the g...
Skicka en kommentar
Läs mer

The Zombie Train that refuses to die

The Guardian has published a couple more articles against HS2, one by specialist rail commentator Christian Wolmar, and another today by journalist Simon Jenkins. The main arguments in favour will doubtless be wheeled out by the commentators: the need for capacity and the disruption caused by upgrading existing routes. HST itself will severely disrupt services to Euston during the construction period. Capacity can be increased at a fraction of the cost by a variety of measures, provided that it is accepted that the additional traffic will run at existing speeds. It is not generally known that the Midland main line is, or was, four track all the way from London to Trent Junction, between Nottingham and Derby. This is because the additional tracks are separate, having been added for coal trains which trundled down to Brent sidings, on the edge of London, from a collection point at Toton in Nottinghamshire, where the Midland Railway build a huge marshalling yard. Beyond Derby, the main l...
Skicka en kommentar
Läs mer

How much more will the British tolerate?

The British are phlegmatic, tolerant and slow to rouse. Thus there was no great reaction after the terrorist attack in July 2005. The murder of Lee Rigby created a sense of outrage, but nothing more, since it appeared to be an isolated incident. Two serious incidents within a fortnight are another matter. Since the first major terrorist incident in 2001, authority has tried to persuade the public that Islam is a religion of peace, that these were isolated events, or the actions of deranged "lone wolves", having nothing to do with Islam, or to reassure that the chances of being killed in a terrorist attack were infinitesimally small. These assurances are are beginning to wear thin. They no longer convince. If government does not act effectively, people will take the law into their own hands. What, however, would effective action look like? What sort of effective action would not amount to rough justice for a lot of innocent people? Given the difficulties of keeping large n...
Skicka en kommentar
Läs mer