Re: [NSW] AC traction motors for Tangara's?

["Jonathan Boles" <mousewithglasses@mail.com>]

> and btw, those 1st-G trains were introduced in 1980 with air conditioning.
what did WE have in
> 1980??? damn it S sets!!!! (OK, a K set or two but they were rare!)

There are afaik 15 a/c K-sets (the greatest train in Australia, btw) in
existence, which are usually coupled in pairs around sector 3. But often, a/c K
sets (the greatest train in Australia, btw) are mixed with non-a/c K sets, or
even S sets, which really pisses me off when I get on at the wrong end of the
train. 

a/c K sets (the greatest train in Australia, btw) would have been rare though
back then, because IIRC they were used on services to Gosford. (Did they run
via Shore or did they run with the U boats???)


> 
> 
> 
> "Chris Downs" <cvdowns@ozemail.com.au> wrote in message
> 1fxR4.16105$PL4.393827@ozemail.com.au">news:1fxR4.16105$PL4.393827@ozemail.com.au...
> > Hong Kong converted their first generation (?) underground trains from
> > camshaft to chopper control at their mid-life overhaul.  This was mentioned
> > in "Modern Railways" UK mag some time in the last 12-18 months. 
Electricity
> > consumption savings and maintenance savings will more than pay for the
> > conversion.
> >
> > Chris
> >
> > Matthew Geier <matthew@mail.usyd.edu.au> wrote in message
> > 8f4ucc$38v$1@metro.ucc.usyd.edu.au">news:8f4ucc$38v$1@metro.ucc.usyd.edu.au...
> > > In article <8f2q5g$9qu$1@nnrp1.deja.com>,  <eikkert@my-deja.com> wrote:
> > > >
> > > >> How economically viable is it to convert the system over to AC? Cost
> > > >> versus benefit?
> > > >
> > > >Personally, I doubt it'd be done en masse, not yet. Perhaps in a half
> > > >life overhaul?
> > > >
> > >
> > >  The first Tangara sets are nearing half-life overhaul stage. Nearly 15
> > years
> > > since the first one arrived and did all those promotonal runs for the
> > Unsworth
> > > electon campain towed by a diesel.
> > >
> > >  It is also not known internationally for EMU's to be refitted with
> > different
> > > motor control technology at their mid-life heavy overhaul. I have read of
> > > cam-shaft DC emu's becommng VVVF inverter AC motored EMU's. (Washington
> > DC?)
> > >
> > >  A Tangara would be relatively easy to convert, as the traction system is
> > > modular. At the half-life refit they would be replacing the power cables
> > > anyway, so at that time they can make sure the motor feed cables are
> > suitable.
> > > The actual chopper unit is in a easly removeable pod. No problems there.
> > The
> > > motors are also modular - replace the bogie!
> > >
> > >  Recently I thought I heard a T set make noises like G7. I thought I was
> > > imagining things. Possibly not....
> > >
> >
> >
> 
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>