wrote:
On Mon, 14 Dec 2020 16:06:54 +0000
Basil Jet wrote:
On 14/12/2020 08:56, wrote:
On Sun, 13 Dec 2020 21:50:13 +0000
" wrote:
On 12/12/2020 14:05, Graeme Wall wrote:
Shouldn't they have done that before ordering the new trains?

When the New York City Subway started commissioning and testing what was
then the brand new R-38 in the 60s, they realised that there was loading
no gauge on some of the tighter curves, particularly on the Fulton
Street Line.

This prompted the works to allow gauge clearance as well as removing
some of the walkways around towers (signal boxes).

IIRC something similar happened when the 73 stock arrived on the Piccadilly
line. The new cars were longer and so the throw was greater and the tunnels
linings around south ken had to be "shaved".


The 2014 French example is the biggest I'm aware of.
https://www.bbc.co.uk/news/world-europe-27497727

Oops. Also it seems I'm rather out of date on French railways. When did SNCF
become a train operator only?



https://en.m.wikipedia.org/wiki/Réseau_Ferré_de_France

quote

Réseau ferré de France (RFF, French: French Rail Network) was a French
company which owned and maintained the French national railway network from
1997 to 2014. The company was formed with the rail assets of SNCF in 1997.
Afterwards, the trains were operated by the SNCF, the national railway
company, but due to European Union Directive 91/440, the Government of
France was required to separate train operations from the railway
infrastructure. On 1 January 2015, RFF became SNCF Réseau, the operational
assets of SNCF became SNCF Mobilités, and both groups were placed under the
control of SNCF.[1]

/quote