The Anonymous Widower

An Interesting Snippet From The Engineer

The Engineer is a magazine that reports on engineering and has done since 1856.

This article is entitled What’s Driving The UK’s Rail Renaissance?.

It is a worthwhile read.

This is a snippet from the section which talks about the Bombardier Aventra.

The “building blocks” of Aventra are being used for commuter train bids in India, South America and Australia.

I would take this to mean, that Bombardier have designed the train and its sub-assemblies, so that it can be put together locally.

Looking at what we know about assembly in Derby, which I reported on in How Long Will It Take Bombardier To Fulfil Their Aventra Orders?, I know or have surmised the following.

  • Bombardier are aiming for a production rate of 25 carriage a month.
  • The sides of the trains are one piece aluminium extrusions.
  • Sub-assemblies designed with suppliers feature in the design.

In addition, there has been a complete rethinking of everything about the design, manufacture and operation of the train.

The aluminium extrusions that appear to make up the sides of the train are revolutionary, with inner and outer skins and strengthening ribs between, probably being extruded in one pass, giving the following advantages.

  • High strength
  • Light weight
  • Thin train sides for greater interior width.
  • Simple, fast, affordable manufacture.

What helps is that train sides and roofs are simple shapes with a constant cross-section. Cars have much more fancy shapes.

See Wikipedia for more on extrusion.

But could it mean, that to set up a factory in say Australia, you only need to export the extruders and the handling rigs to create the body-shells for the locally-assembled trains.

Once the body-shells have been assembled, you just fit the components. Some might be manufactured locally, but other complicatedpartts like bogies, which Bombardier design in the UK, but make in Sweden, would probably be imported.

Hitachi by contrast, build the body-shells in Japan and send them by ship to their factories in Europe. How inefficient and costly is that?

Australia would get new modern trains, that were assembled locally, at a timely rate.

 

September 28, 2017 - Posted by | Travel | , , ,

1 Comment »

  1. […] In An Interesting Snippet From The Engineer, I said this about the manufacture of the Aventra trains in Derby. […]

    Pingback by Is This Organisation Behind The Aventra Manufacture? « The Anonymous Widower | September 28, 2017 | Reply


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