Boltar wrote:
On 13 Feb, 15:05, "Peter Corser" wrote:
set maximum and then draw that current until maximum speed is
attained. This means that acceleration at speeds above 10 to 15 mph
is considerably enhanced on the modern stock.

Interesting post, thanks for that. Certainly on the central line the
acceleration is pretty impressive but I can't say I find the northern
or jubilee stocks anymore impressive performance wise than the stocks
they replaced. I used to live in finchley and travel on the northern
when the 59 & 72 stocks were still being used and they used to floor
it on the open air section from east finchley to finchley central no
doubt because its well over a mile of almost straight track. When
travelling on the 95 stock though it seemed all rather sedate. Perhaps
its just psychological because theres no screaming motor sounds and
the windows didn't sound like were about to fall out but even so , its
certainly nowhere near as quick as the 92 stock.

B2003
Boltae

The actual performance of modern stock is electronically controllable (a set
of EPROMS on the Central Line). If you are running mixed stock and/or the
signalling has not been updated the new stock has to match (or not better)
the old in performance terms if the overlaps are not to be compromised.

It may also be necessary to ensure that any regen is limited to ensure that
the performance of the old stock is not significantly improved.

Peter
--
Peter & Elizabeth Corser
Leighton Buzzard, UK


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