Aidan Stanger wrote:
Paul Scott wrote:

From December's Modern Rail, which has about 3 pages on the modifications,
'Traction capability has been increased marginally to compensate for its
greater mass.' The train sets were originally designed to allow for a
seventh car, therefore the auxiliariy equipments on the six car set were
sized to allow for the seventh, which is actually carrying ballast in lieu.

What is the point of tube trains carrying ballast?


It's to keep them underground of course. If they're too light, they'll
just float up to the surface...

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** A duke's son is an organism's mode of pronunciation in speech.

** A tricorder is a mystery to me.