[opendtv] Re: Mag-lev
- From: "peter wilson" <peter.wilson@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Mon, 30 Oct 2006 23:06:21 -0000
The Maglev crash in Germany was on a private test track
http://news.bbc.co.uk/1/hi/world/europe/5370564.stm
I think the track is owned by Siemens who make regular trains as well.
Most guy's in the UK know about Maglev and linear traction motors thanks to
a long forgotten science programme with a certain professor Braithwaite the
supposed inventor of the technology for Maglev. Real implementations were
unfortunately after his death.
Electrical surges from trains are nothing new, the TGV's in France have more
than a Megawatt tractive effort and all the Scientists in the Cerne research
facility go for a cup of tea when the TGV leaves Geneva station.
Amusingly the Eurostar trains due to Thatchers half assed approach to public
transport use 25KV ac in France and the tunnel and 800volts DC in the last
part of the track in the UK, the converters were so dirty it took a year to
harden the signalling system.
Peter
-----Original Message-----
From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] On
Behalf Of John Willkie
Sent: 30 October 2006 21:13
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: Mag-lev
There's a mag-lev "proposal" floating around california political circles
for (take your pick) SD->LA->Riverside->Las Vegas. It's running against
several other proposals that affect certain portions of the idealized
trackbed.
IIRC, it's somewhere around $1 billion a mile, or about 10x the per-mile
cost of a NEW 16 lane freeway.
There are many sticking issues, not the least of which is the lack of
horizontal space (even for current rail needs) in the Camp
Pendleton->Mission Viejo portion, let alone the right of way needed for
mag-lev and rail.
The major proponent is a local san diego real estate investor who bought the
rights from the proponent who appeared at transit board hearings that I
covered more than two decades ago. It has about a zero chance of getting
government funding.
Whatever advantage Mag-lev has in speed, it loses with the significant
costs/electrical surge each time a train starts up and stops at a station.
I've heard flywheels as a work-around, but that just adds other
weight/safety issues.
Wasn't there a fatal crash of a mag-lev in the last few weeks. Something
about two trains on the same track. As complicated as things get, it's
suprising how often issues arise that were "solved" more than 100 years ago.
John Willkie, a grandson of an Illinois Central railroad engineer with the
same name.
-----Original Message-----
>From: Mark Schubin <tvmark@xxxxxxxxxxxxx>
>Sent: Oct 30, 2006 12:15 PM
>To: Open DTV Forum <opendtv@xxxxxxxxxxxxx>
>Subject: [opendtv] Mag-lev
>
>As long as it was brought up, there's a commercial mag-lev system from
>Shanghai's Pudong airport to the Longyang Road metro station. It has
>been operating for almost three years. The trip takes about seven
>minutes at a top speed of about 270 MPH (during a test it went about 313
>MPH) and costs about $5 for ticketed air passengers. The same trip by
>road took me about 45 minutes in the middle of the night with no
>traffic. I note that in "An Inconvenient Truth" Al Gore is shown making
>the trip in a chauffered limo rather than on the train.
>
>The line is being extended to the Shanghai South railway station, the
>Expo 2010 site, and the Hongqiao airport.
>
>TTFN,
>Mark
>
>
>
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