BBC - Richard Hammond's - Engineering Connections - Bullet Train (2011) DVDRip XviD-DMZ
AVI | 549.7 MiB |624x352 | XviD @ 1 439 Kbps |English | MP3 @ 128 Kbps - 2 channels | 48mn 48s
Richard Hammond reveals the surprising engineering connections between Japan s Bullet Train, the world s first high-speed train, and ancient charioteers, a crowbar, a medieval clock, the electric telegraph and a 19th-century luxury racing car. Nearly fifty years old, the Bullet Train is still pioneering new high-speed technology. Richard builds his own train to show how engineers reinvented the train wheel to prevent it violently shaking at its top speeds of close to 200mph (300kph). Things start to heat up when he visits a high voltage lab to find out how engineers eliminated the danger of 10,000 degree electrical arcs by devising an ingeniously levered pantograph - the connection between the train and the overhead power lines. They also made the train light to maximise acceleration, but as Richard finds out on a skid pan, this created a slippery problem only solved thanks to the world s first four-wheel-drive car - the Lohner Porsche. Obviously, four driven wheels were not enough for a Bullet Train, so engineers made it a 112-wheel-drive.
No Mirrors Please!
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