The Crosti ‘9Fs’ - a bold experiment

One of the most easily identifiable of the ‘standard’ classes was the small group of Crosti boilered ‘9F’ 2-10-0s, a peculiar design which had the chimney halfway down the boiler and which was anything but a success, as EVAN GREEN-HUGHES explains.

Crosti 9F
Above: With the unusual position of the exhaust evident, Crosti ‘9F’ 2-10-0 92021 works upgrade near Plumtree with a coal train on August 2 1955. John Wilson/Rail Archive Stephenson.

THE WRITING might have been on the wall for steam traction by the mid 1950s, but that did not mean that development and research into improved efficiency was not continuing. At the time it was assumed that new locomotives then in build would have a working life of perhaps 40 years, and there were those who thought that with upgrades it would still be possible to build a steam locomotive that could rival diesels for efficiency and availability.

Want to read more?

This is a premium article and requires an active Key Model World subscription.

Existing subscriber? Sign in now

No subscription?

Enjoy the following subscriber only benefits:

  • Unlimited access to all Key Model World content
  • Exclusive product reviews, latest news, builds and highly detailed layouts
  • Read 5,300 articles, in a fully searchable archive of modelling content growing daily!
  • Access to read the official Hornby Magazine and Airfix Model World online, brought to life with video and additional imagery
  • Access on any device- anywhere, anytime
  • Choose from our offers below