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Old February 1st 07, 03:02 PM posted to uk.transport.london
Boltar Boltar is offline
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First recorded activity at LondonBanter: Jul 2003
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Default Why is the Victoria line so hot these days?

On Feb 1, 2:59 pm, "Tom Page" wrote:
On 1 Feb, 14:03, "Boltar" wrote:

On Feb 1, 1:38 pm, "Tom Page" wrote:


For anyone interested this features keeps the motor going rather than
coasting once the train's reached its maximum speed. I think the heat


Whats the advantage of that? Wouldn't it just waste electricity and
cause excess heat as mentioned?


B2003


It's not exactly rocket science that if one coasts one loses speed due
to friction, so keeping the motor going allows faster journey speeds.


Because of their weight and lack of rolling resistence trains tend to
lose speed far less quickly than other sorts of wheeled vehicles so it
would be interesting to see just how much speed a vic train would
loose when coasting. Of course if the track has a gradient that will
make a big difference. Surely though the logical thing would be to
have the motors cut back in when the speed had dropped by a few mph
rather than having them on constantly?

B2003