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Old January 2nd, 2015, 01:56 AM   #881
Yellow Fever
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@ Alixx, thanks for the updates but all photos must be sourced and credited, thanks!
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Old January 3rd, 2015, 12:07 AM   #882
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Basiclly I'm still so suprised of trains speed performance and growing of communication technology
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Old January 13th, 2015, 09:14 PM   #883
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JR Tokai Begins Constructing First Commercial Superconducting Maglev Train Line




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Railway company JR Tokai has taken the first step toward constructing an underground terminal for the world’s first commercial “superconducting” maglev train line that is slated to go into service in 2027, reports Asian Nikkei.

The main railway operator in central Japan last month began making space for construction materials and machines under the Tokaido Shinkansen tracks near Shinagawa station, in central Tokyo.

Once the rail line is complete, passengers can expect to make the 286km journey from Shinagawa to Nagoya in 40 minutes. Plans call for the line to be extended to Osaka in 2045. The distance from Tokyo to Osaka will be 438km and the trip is expected to take one hour and seven minutes, JR Tokai engineers opined.

Construction costs for the first stretch are estimated at $46 billion. Total costs for the entire project, all the way to Osaka, are seen reaching $75 billion.

Magnetic-levitation trains hover over and are propelled by a magnetic track. These tracks can also be called linear motors. Trains on the Linear Chuo Shinkansen Line will float about 10cm above the track and will reach a maximum of 500kph. Currently, the fastest commercial maglev train carries passengers between Shanghai and Pudong Airport. Based on German technology, it levitates 1cm above the track and reaches a maximum 430kph.

This year, JR Tokai will talk to municipalities and respond to questions from residents who live near the planned route. The company can only tunnel under its own land. It will start buying necessary plots this year and is widely expected to start drilling the shaft next year.

Most of the Shinagawa-Nagoya section, 86% to be exact, will be comprised of a series of long tunnels. JR Tokai will finalize construction specifications and start selecting contractors this year. Already, heavy machinery and construction companies are honing their technologies in anticipation of winning contracts.

One hopeful is Koken Boring Machine, a Tokyo-based maker of earth-drilling equipment and geologic condition gauges. Part of the planned route runs deep beneath the Japanese Alps, so it will be difficult to drill down vertically. Koken Boring’s equipment allows for horizontal drilling. Its geologic equipment can survey conditions 200 meters to 300 meters ahead.

Meanwhile, dynamite is out of the question for preparing sections under urban areas. These sections will have to be shield-tunneled. This type of drilling uses a 10m-wide cylinder, or shield, that is rotated as it is pushed forward. Obayashi, a big construction company, and Mitsubishi Heavy Industries Mechatronics Systems have jointly developed a tunnel-boring machine that is capable of drilling 25% faster than conventional bores. The two companies intend to come up with a shield-tunneler that can go 500 meters in a month, a 100% increase from 20 years ago.

Similarly, train makers are seeking to improve vehicle technologies. As such, railway carriage maker Nippon Sharyo, a subsidiary of JR Tokai, and Mitsubishi Heavy Industries have been working to develop the L0 model maglev train. The hope is for the L0’s ride to be as smooth and comfortable as that of the latest Shinkansen N700A model.

http://www.worldindustrialreporter.c...ev-train-line/
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Old January 14th, 2015, 10:28 AM   #884
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The company can only tunnel under its own land.
That is interesting - so they cannot bore the tunnels under private buildings?
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Old January 14th, 2015, 11:54 AM   #885
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Yes they can and at the same time they can't. It all depends on how deep they go, there is a law that says that if they are below 40 meters from ground level and steering clear of deep foundations then they are free to do what they want, but any shallower than that and they need to own the space above it.

More about the law at: http://en.wikipedia.org/wiki/Deep_underground

Within the cities then they will use this law to their benefit, but in rural areas where land is still pretty cheap then the total price will be lower to just buy the land and dig a shallow tunnel than to dig 40+ meters underground.
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Old April 2nd, 2015, 06:42 PM   #886
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updates?
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Old April 16th, 2015, 01:59 PM   #887
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JR-Central started high-speed test with the extended test track,
The L0-series 7-car trainset hit manned (29 people on board) speed of 590km/h, breaking the previous record of 581km/h set in 2003.
JR Central is attempting 600km/h manned run on the 21st of April.

http://jr-central.co.jp/news/release/_pdf/000026425.pdf
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Old April 16th, 2015, 03:24 PM   #888
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Wow thanks for the update, I thought the maglev dropped on the face of the earth.
I look forward to the 21st of April.

However, still no news on the construction of the commercial line.
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Old April 16th, 2015, 04:00 PM   #889
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Quote:
Originally Posted by 2co2co View Post
JR-Central started high-speed test with the extended test track

I think this is more interesting. What is this new part extended and what's the total of kilometers in operation now?

Thanks
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Old April 17th, 2015, 11:48 AM   #890
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They have extended the Yamanashi test track in both directions from 18.4 km to 42.4 km.
You can get a good look on Google Earth with the latest images.

It's great to hear that they are on the quest for speed again, I believe that this might be the next big step in top speed until the whole line is completed, or other technologies are developed.
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Old April 17th, 2015, 05:44 PM   #891
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Sorry to break any expectations but I believe they are only testing the design top speed so they can certify the 25% capped commercial speed of 500Km/h. To do that they will need to set the speed limit to 667Km/h.
Don't worry, they still have some more till they hit the sound barrier.
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Old April 21st, 2015, 01:34 AM   #892
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Today we wait for 600Km/h record.
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Old April 21st, 2015, 05:51 AM   #893
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JR maglev just hits 603km/h

Mainichi
http://mainichi.jp/graph/2015/04/21/...0000c/003.html

Nikkei
http://www.nikkei.com/article/DGXLAS...A4MM0000/?dg=1

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Old April 21st, 2015, 09:09 AM   #894
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Old April 22nd, 2015, 09:45 PM   #895
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Al Jazeera English coverage

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Old April 22nd, 2015, 10:09 PM   #896
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I think they've got those diagrams a little inaccurate. Although the commentary seems sound. As I understand the technology, the levitation comes from the side by locking the train into a magnetic field, does it not?

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Old April 23rd, 2015, 03:51 AM   #897
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Quote:
Originally Posted by bluemeansgo View Post
I think they've got those diagrams a little inaccurate. Although the commentary seems sound. As I understand the technology, the levitation comes from the side by locking the train into a magnetic field, does it not?
Correct and magnetism is induced into the coils on the side guideways through the moving superconductive magnets that are situated on the sides of the trainset. The induced magnetism only gets strong enough to lift the trainset when it exceeds 150Km/h.
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Old April 23rd, 2015, 08:57 AM   #898
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The interesting thing is that compared to the Transrapid switches are a lot easier: Basically a movable wall will do, instead of the entire track for Transrapid.

Downside of this rail design is that while Transrapid basically is a clamp around the rail, there is nothing in the Japanese system to prevent flight. If a similar accident as happened with Transrapid (collision with a maintenance vehicle) were to occur, there is nothing to stop the train from lifting off and leaving the tracks. Who knows where it will end up if that were to happen.
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Old April 23rd, 2015, 01:16 PM   #899
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Quote:
Originally Posted by M-NL View Post
The interesting thing is that compared to the Transrapid switches are a lot easier: Basically a movable wall will do, instead of the entire track for Transrapid.

Downside of this rail design is that while Transrapid basically is a clamp around the rail, there is nothing in the Japanese system to prevent flight. If a similar accident as happened with Transrapid (collision with a maintenance vehicle) were to occur, there is nothing to stop the train from lifting off and leaving the tracks. Who knows where it will end up if that were to happen.
They could just build a roof fence which will ensure the train wont fly out of the track if that will ever happen.
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Old April 23rd, 2015, 01:48 PM   #900
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Originally Posted by tonii View Post
They could just build a roof fence which will ensure the train wont fly out of the track if that will ever happen.
What fence will stop a 500 km/h flying train?
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