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why are the new Victoria and trains so slow?
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... On Mon, 08 Aug 2011 04:53:12 -0500 wrote: It rather depends how you count the introduction of regenerative braking, surely? I was assuming without. The effectiveness of regenerative braking varies anyway , plus I don't understand how it can work well on the tube with all the seperate sections of traction supply the lines have. Surely it will only work if theres another train fairly close by? Not necessarily. I understand one of the prerequisites for the introduction of regenerative braking on the Central Line was a requirement to replace older motors in escalators at stations. They share their supply with the traction and needed to be able to handle the greater variations in supply voltage. -- DAS |
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