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Post by Kereru on Jul 1, 2007 20:09:11 GMT 12
Thanks Colin. You avatar looks interesting. Is the book mainly photographic? It is a small booklet put out for the 90th anniversary of RAAF 6 Squadron with a bit about its history. The F-111 shot on the front page is one I took at Wanaka 2006. www.airplane-pictures.net/image1546.htmlThat must have been fun on those trains? Makes me want to go back and do a tour of just spotting aircraft trains and all sorts of other photographic subjects. Colin
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Post by Peter Lewis on Jul 1, 2007 20:21:34 GMT 12
What is Changing The Key all about? Are they the money purses from tickets sold or something? Where there is only one rail line, there is always the risk of a head-on collision between trains traveling in opposite directions. To eliminate this risk, the track is divided into sections, with a small length of two-way track at the start/finish of each section so that opposing trains can safely pass each other. Before a train can enter a section, the 'key' is used to set the train signals on that section of track to prevent a train entering that section from the other end. The driver carries the key with him throughout that section and then hands it to the driver of the train waiting at the other end. Because there is only one key to each section, this eliminates the possibility of a collision.
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Post by planeimages on Jul 1, 2007 23:09:56 GMT 12
Couldn't have explained it better myself. I thought I caught the moment rather well. The key or token is used by the signaller to insert into a slot which allows the signals and points to be operated.
Train spotting is just another form of "anoraking".
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Post by Dave Homewood on Jul 1, 2007 23:23:00 GMT 12
Interesting stuff, thanks. Regarding railways, if you're able to, have a listen to the excellent BBC programme "Only A Matter of Time" found on BBC7 right now (it will probably disappear tomorrow so be quick). It's really well written and acted, and involves a railway man from Brunel's company travelling Wales to tell people to set their clocks to standard time. but it has a much deeper meaning about progress and how it destroys tradition. Roll down this page to find the audio link at 10.15am, but do it now as it will be gone soon. www.bbc.co.uk/bbc7/listenagain/monday/The next day is the sequel, 150 years later, with the same actors playing their descendants. Also very good. www.bbc.co.uk/bbc7/listenagain/tuesday/This one is called "Time Added on for Injuries"
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