Siemens Desiro Future

[cnjb8]

There order book for the past few years in the UK seems to be suburban stock. Will they diversify with the Desiro City or continuing production with the standard Desiro UK?

 

[James Kevill]

I'm not sure whenever the Siemens continues to built more Desiro UK or not. But I was thinking the idea about South Western Railway and Angel Trains could order the new 127 carriages so the can extend all of the 127 Class 450 Desiros into 5 carriages and they could be coupled up into 10 carriages to ease overcrowding. And Siemens could order more 3 Class 450 Desiro and 5 more Class 444 Desiros to increase the Commuter, Outer suburban, some express services, inner suburban and Mainline services such as London Waterloo to Portsmouth Harbour, Poole, Weymouth, Alton, Basingstoke, and Reading.

 

[cnjb8]

I'm not sure whenever the Siemens continues to built more Desiro UK or not. But I was thinking the idea about South Western Railway and Angel Trains could order the new 127 carriages so the can extend all of the 127 Class 450 Desiros into 5 carriages and they could be coupled up into 10 carriages to ease overcrowding. And Siemens could order more 3 Class 450 Desiro and 5 more Class 444 Desiros to increase the Commuter, Outer suburban, some express services, inner suburban and Mainline services such as London Waterloo to Portsmouth Harbour, Poole, Weymouth, Alton, Basingstoke, and Reading.

I think SWR are Bombardier now. I like the Desiro so it's a shame to see none being built.

 

[43096]

I'm not sure whenever the Siemens continues to built more Desiro UK or not. But I was thinking the idea about South Western Railway and Angel Trains could order the new 127 carriages so the can extend all of the 127 Class 450 Desiros into 5 carriages and they could be coupled up into 10 carriages to ease overcrowding. And Siemens could order more 3 Class 450 Desiro and 5 more Class 444 Desiros to increase the Commuter, Outer suburban, some express services, inner suburban and Mainline services such as London Waterloo to Portsmouth Harbour, Poole, Weymouth, Alton, Basingstoke, and Reading.

Ummmmmm. Lengthening 450s to 5-car would actually cut capacity, as the main lines are built around 240m length trains (i.e. 3x450). Running 5-car 450s would leave trains 2 cars shorter. Part of the reason for the 442s returning is to cascade more 450s to form 12-car trains.

Reading is not relevant, most of its trains are already 10-car (2x458) and in any case Aventras are unfortunately meant to work that line in its entirety in the future.

 

[mmh]

I'm not sure whenever the Siemens continues to built more Desiro UK or not. But I was thinking the idea about South Western Railway and Angel Trains could order the new 127 carriages so the can extend all of the 127 Class 450 Desiros into 5 carriages and they could be coupled up into 10 carriages to ease overcrowding. And Siemens could order more 3 Class 450 Desiro and 5 more Class 444 Desiros to increase the Commuter, Outer suburban, some express services, inner suburban and Mainline services such as London Waterloo to Portsmouth Harbour, Poole, Weymouth, Alton, Basingstoke, and Reading.

Making 450s 5 car would reduce flexibility and mean some shorter trains. They're 4 car so they can be used as 4, 8 or 12 formations.

The 5 car class 444 is 23 meters long per car as opposed to the 450s 20 metres, so a 10x444 is roughly the same length as 12x450.

 

[swt_passenger]

Desiro UK first generation in the form of 350/360/444/450 is obsolete technology. Desiro City and variants such as 707 and 717 is the current product.

450 5 car extensions had its chance getting on for 10 years ago, when an ITT was published, and the 458/5s were the end result of that attempt, after years of negotiation with DfT.

As others have said, the mainline side is optimised for 240m trains, and once all the 442s are in service 12 car 450s will be operated at maximum numbers possible. A small subset of 5 cars would be fairly pointless.