Tangara design testing

Posted: February 29, 2012 in Transport
Tags: , , ,

An interesting video from the 1980s that shows planning for the design of the Tangara trains, it shows how long it takes for large number of people to board and disembark from a train, based on different carriage designs.

The first is the traditional silver set carriage, which has bottlenecks that prevent people walking up and down the stairs more than one person at a time. The improved Tangara design has wider stairs, which allows people to go 2 abreast, thus increasing the speed at which they can board and disembark.

This is important for dwell times: how long a train has to spend at each station. The longer this is, the fewer trains you can run per hour (the headways, time between trains, is longer) and the more one train’s delay impacts on the trains behind it.

Almost 20 years on, the Cityrail network is on the cusp of retiring almost all silver sets once the new Waratah fleet comes online. Doing so could allow network wide improvements to speed and reliability due to shortened dwell times.

(This video was produced by Comeng, who produced the silver L/R/S Set trains in Sydney and a number of trams in Melbourne. However, Tangaras would eventually be produced by Goninan, the same company that made the OSCARs. I’m unsure as to the reason why the Tangara project was shifted from Comeng to Goninan. If you know, then feel free to post in the comments section below.)

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Comments
  1. Tony Bailey says:

    Its pretty well known, and will be confirmed in the last volume of John Dunn”s Comeng book that the Wran Government wanted to close the State Dockyard at Newcastle and were looking for a job creation scheme in the region to cover the Dockyard job losses,so, despite Comeng being the lowest bidder, the order for what became the Tangaras went to Goninan, now United Group, at Broadmeadow.

    Much of the dwell time problem is also related to post Waterfall actions.

  2. Marcus says:

    Comeng had rolling strikes and serious concerns were raised as the boggie assembly of the tangara. The under carriage was imported by our government from overseas at the time (cheap manufactures). in the day. Just look at Holden, Ford and Toyota early warning signs in the 1980s what a shame to lose this innovative company.Mr Dunn lost site of the big picture.

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