Chinese High-Speed Train Sets New World Record
shmG writes "A new high-speed train linking Chinese cities Shanghai and Hangzhou has set a fresh world record for train speed at 416.6 kilometers per hour (259 mph) on its trial run on Tuesday. The train is expected to cut the travel time by half, to 40 minutes for covering a distance of 202 kilometers between the two cities at an average speed of 350 kilometers per hour. 'The new record of 416.6 km per hour shows that China has achieved a new milestone in high-speed train technologies,' Zhang Shuguang, deputy chief engineer of the Ministry of Railways, was quoted as saying."
The TGV holds the record with 575 km/h! http://en.wikipedia.org/wiki/TGV_world_speed_record
But the Shinkansen made 443 km/h in diverse tests, still about 25 km/h faster than the chinese train.
Lucky bastard, here in California we get 120km/hr. And anything faster is going to be 9 billion dollars, and over a decade, just to build the first 25 mile stretch along existing right-of-ways.
I'm out of my mind right now, but feel free to leave a message.....
In both cases the problem is the track ...
In the UK the track goes around a lot of corners and is far from straight, and to take out the bends would cost huge amounts (especially through towns/cities)
In the US your track is very poor quality (a legacy of the speed it was built and the huge extent of the network) and the cost of upgrading is huge ...
The very fast trains in Japan/France/China all benefit from the local governments simply forcibly buying the land required at cost (or less) and getting on with it ...
Puteulanus fenestra mortis
And the French TGV reached 574.8 km/h in a special test run. However these were specially modified trains, while this Chinese train broke the speed record for an unmodified train
http://en.wikipedia.org/wiki/Land_speed_record_for_rail_vehicles#Conventional_wheeled
No, the net horizontal force on the wheels would be the same. The vertical force should be equalised between them though.
The only way you can decrease the horizontal force is to camber the actual track, which they do.