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DLR Still Getting Slower
On 27 Jun, 17:11, (Neil Williams)
wrote: Have the DLR still not worked out how to deal with that issue? *I heard it was due to the use of tram-profile wheels on mainline-profile rails. *If that is the case, can't they just progressively replace or reprofile the wheelsets? It's not as simple as that. Wheelsets are a compromise between those which perform well on straight track and those which perform well on curves. On mainline railways this balance is easier to strike because curves are normally not particularly tight. However the DLR has some extremely sharp curves, for example at West India Quay, hence the need for suitable wheelsets. Obviously this balance has not yet been perfected, but it's by no means an easy thing to do. |
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