Re: Re: Tram-train: where did we go wrong?
  C. B.

Reading between the lines, it would appear that the main problem is Network
Rail, who seem to have the following attitude: "We have never done this
before and so do not know how to do it. We need time to think about it,
solve the problem and do the design work. It doesn't matter that somebody
else has done all this already and has the answers! We are the world
experts and we know everything, so just sit there and wait while we fiddle
about." My words but that seems to be the attitude.

Chas


On 16 September 2017 at 21:32, Matthew Geiermatthew@...
[TramsDownUnder] TramsDownUnder@...> wrote:

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> On 16/09/17 12:09,mcloughlin.dj@... [TramsDownUnder] wrote:

> >

>

> > See this except:

> >

> >

> > > one underestimated challenge has been the development of a wheel

> profile suitable for use on both Supertram and Network Rail tracks. At

> present, he says, all seven vehicles have been delivered with the standard

> wheel profile used on the rest of the tram fleet. Four cars are to be

> modified with new wheels to operate the Sheffield – Rotherham service.

> >

>

> Something Sydney did back in 1996 with the Variotram and it's hybrid

> profile wheels.

>

> They are literally re-inventing an already re-invented wheel.

>

> The attached is part of a drawing with an original date of 1995 and it

> makes reference to an even older ABB drawing. And presumably Karlsruhe had

> to solve this issue 'way back'.

>

> The key item is the stepped wheel back.

>

> > Full story including photo of the new tram. Hmm they are Spanish trams!

>

> But not CAF, Vossloh Citylink. Vossloh rail has recently been acquired by

> Stadler.

>

> Tram-train pioneer Karlsruhe have been getting them too. Sheffield's ones

> are based on the Karlsruhe ones.

>

> >

> > http://www.metro-report.com/news/light-rail/single-view/

> view/sheffield-tram-train-enters-service.html

> >

>

> An only just going into service now, the first was delivered in November

> 2015! Nearly 2 years getting in the way in the depot before being pressed

> into passenger service.

>

> And TfNSW looks to the UK to for 'expertise'.

>

>