Deleted
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Post by Deleted on Jun 20, 2005 20:30:47 GMT
I've always looked at Tube railway lines and Mainline railway lines and wondered, why is there a seperate line in between the two main ones? (bit of a rear up description so I'll post a picture) www.flee.com/img/edgeware_rd_tracks.jpg there. As you can see the two lines what all trains use around the globe are there but there is another two in between and at the side.. Cheers Tube Mates  |
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Post by c5 on Jun 20, 2005 20:38:02 GMT
I'm guessing that the two rails you are talking about are the juice rails. On LU we use two the middle one is the negative at -210V d.c. and the one on the outside is the positive at +420V d.c.. On the National Network they don't have a middle (negative) rail, but the one on te outside gives out 750V d.c. Then if a train gets its power from overhead, is a diesel (ugh  ) or a steam engine  then you dont need juice rails and just have the two running rails. C5 |
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Deleted
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Post by Deleted on Jun 20, 2005 20:40:12 GMT
Is that why in a comedy show I saw yonks back, they got stuck in a tunnel on the Tube and a woman said 'I know that two rails are safe to walk on but the others will fry us... but which ones'?
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Deleted
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Post by Deleted on Jun 20, 2005 20:41:17 GMT
After driving the Waterloo and City line on my simulator I was thinking the Tunnel stock would of had a smaller width than that of a District train.
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Post by c5 on Jun 20, 2005 20:43:22 GMT
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Deleted
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Post by Deleted on Jun 20, 2005 20:46:14 GMT
Nah it wasn't that, it was a series on the BBC , might of been My Family?
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Post by Deleted on Jun 20, 2005 20:49:46 GMT
Another question however, is that how does the train go about picking the 'juice' up?
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DWS
every second count's
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Post by DWS on Jun 20, 2005 20:49:57 GMT
I'm guessing that the two rails you are talking about are the juice rails. On LU we use two the middle one is the negative at -210V d.c. and the one on the outside is the positive at +420V d.c.. On the National Network they don't have a middle (negative) rail, but the one on te outside gives out 750V d.c. Then if a train gets its power from overhead, is a diesel (ugh ) or a steam engine then you dont need juice rails and just have the two running rails. C5 Juice is the liquid in vegetables, fruits etc. The correct term is Traction Current  |
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Post by rikio on Jun 20, 2005 21:04:36 GMT
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Post by Nick Booth on Jun 24, 2005 11:45:38 GMT
After driving the Waterloo and City line on my simulator I was thinking the Tunnel stock would of had a smaller width than that of a District train. Would HAVE had. Would HAVE had. Would HAVE had. |
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Post by Nick Booth on Jun 24, 2005 11:46:20 GMT
Nah it wasn't that, it was a series on the BBC , might of been My Family? Might HAVE been. Might HAVE been. Might HAVE been. |
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Post by Nick Booth on Jun 24, 2005 11:47:20 GMT
All THERE is. All THERE is. All THERE is. |
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Post by chris on Jun 24, 2005 13:12:25 GMT
Nah it wasn't that, it was a series on the BBC , might of been My Family? It was My Family. One of the Christmas specials where they get stuck on a train. |
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) or a steam engine 
then you dont need juice rails and just have the two running rails.
