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Re: Why not cable trams? (Melb.)

This is 'old fashioned' technology

So is 25 KV AC electrification these days. It's interesting to read some anecdotal notes coming out of the PPP train section in RailCorp which suggests they're considering abandoning the use of AC traction simply because the size/weight of the inverter packs needed but I suspect it's just an initial engineering assessment and not a final concept that's been utilised in the design that was presented to tenderers before the contract for the first half of the PPP project was awarded to EDI.

Hopefully there will be plenty more info about how the design for the trains progresses as time goes on.

Craig.

--
Craig Dewick - HO-Scale Railway Modeller and Professional Train Manager
http://www.railzone.org -- Galleries, Forums, Links, Data, etc.! Email me at
craigd@lios.apana.org.au -- RailCorp Train Crew Council: http://www.rctcc.org
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Reply to
C. Dewick
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Which is the most stupid comment i've seen for a long time. The modern VVVF inverter packs are now so small and light that the building of small profile metro train sets with a single motored axle on EACH CAR is feasible. And it's not just the inverter packs, the actual 3 phase induction motors used are significantly lighter than series-wound DC motors for the same power output.

The French and Italian double deck EMU's unlike ours, have a large equipment rooms behind the driver that has much of the electrical equipment, there is basically no vestibule behind the driver. The latest designs using VVVF drives have done away with this room as the modern equipment takes up less space and they can now fit it in the small roof pods.

If the above comment is any example of the process, we're doomed. :-)

Reply to
Matthew Geier

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