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Post by tube10 on Oct 12, 2007 20:30:25 GMT
How is crossrail be different from the underground in general including the power supply and signals?
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Post by thc on Oct 12, 2007 20:53:37 GMT
25 kV AC overhead power supply rather than 630V DC third/fourth rail. "Mainline" gauge stock, whatever that means, rather than 'S' stock profile. Can't speak regarding the signalling - that one's way over my head...  THC |
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Post by amershamsi on Oct 13, 2007 0:56:22 GMT
tunnels 250% times more cross-sectional area. Trains 12 cars long, compared to at most 8 cars long.
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Deleted
Deleted Member
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Post by Deleted on Oct 13, 2007 16:32:02 GMT
tunnels 250% times more cross-sectional area. 250% of sub-surface area?  |
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Post by amershamsi on Oct 14, 2007 21:39:43 GMT
actually, having worked that out, that's only compared with the smallest tube tunnels. Compared with the JLE, there will be half as much stuff again (due to the increase of just over a metre in diameter) (150%) per unit length of tunnel to remove. It's still a lot more, due to having big trains, and all the stuff like walkways and OHLE.
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