"Barry Salter" wrote in message
On 17 Jan 2005 05:32:22 -0800, wrote:
What about the A stock going to Amersham, Watford and Uxbrige. They
must be 44 years old at least by now.
Those, like the rest of the Underground passenger fleet that wasn't
replaced, were refurbished in the early to mid 1990s, and are still
perfectly acceptable, if a little "lively" in ride due to not having
air suspension.
They also seem to have fortissimo compressors compared to stock built
even a few years later. They also have very leisurely acceleration,
presumably beause they're geared for a higher top speed rather than fast
acceleration, plus trains designed in the 1950s were less powerful than
modern traction. This is fine on the outer, semi-rural sections, but
may be inefficient on the densely-packed, minimum-headway Circle Line
section which has frequent stops.