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Recliner[_3_] · October 30th 14, 01:45 PM posted to uk.transport.london

On Thu, 30 Oct 2014 13:27:36 +0000, "
wrote:

On 30.10.14 12:41, Recliner wrote:
On Thu, 30 Oct 2014 12:03:45 GMT, d wrote:

On Wed, 29 Oct 2014 20:20:26 -0500
wrote:
I suspect there are more positive reasons for the A stock longevity. The
mid-life refurb was worthwhile, for example. It was the first stock that was
all-aluminium which reduced corrosion problems AIUI.

Aluminium isn't quite the panacea people seem to think. You can get some
serious galvanic corrosion issues if you join it to steel. I'm not sure how
they get around the problem but its always there waiting to appear.

That's true, and it's reported to be one reason why the IoW railway
has been cautious about buying second-hand modern Tube stock such as
the 59, 67, 83, etc, to run in its salty, sea-sprayed environment.

However, I've not heard that it's been a problem with LU trains
running in London.

Perhaps because it's not that close to the sea?

I was responding to Boltar's point that, "Aluminium isn't quite the
panacea people seem to think. You can get some serious galvanic
corrosion issues if you join it to steel".