The world's railway community has always lived in the certainty of the Prussian choice not to make use of Pacific locomotives and to leave it to the Teen Weehler to pull passenger trains, both fast (S10 - Br. 17) and local (P8 - Br 38).

These drawings prove otherwise.

Built according to the General Schemes XXiXa, b and c of 1910, this S 11.1, a 4-cylinder double-expansion locomotive, takes up the characteristics that made the S10 famous, adding a Bissel-type rear bogie, lengthening the furnace and boiler and proposing a well-balanced and fascinating machine.

The Knorr type preheater, in a very elongated version mounted on the right side, greatly increased the efficiency of the boiler which, while maintaining the basic characteristics of the S10, greatly increased the production of steam through its elongation.

This is certainly one of the best kept secrets of the Prussian railways. Used for heavy trains on the Estbahn between Berlin and Königsberg, it was cross-tested with the Bavarian S 3/6, of which it proved to be vastly superior, both in terms of balance and power.

In 1914 it was about to go into production in an updated version that moved the platforms above the driving wheels, but the war effort blocked the order for 25 units already issued to Hoffmann AG, Berliner Metallwaren und Weissbier GmbH and Sonneberger Lokomotivbau AG.

In 1918 the locomotive was isolated in the enclave of Gdansk, and for this reason there are no photos of it. In 1925 the locomotive assumed the new DRG numbering as class Br 18.9. It was used during the 2nd World War to pull Urlauberzüge and unfortunately it was blocked in Polish territory by a seizure of the bearings of the crank of the feed pump. Captured as war prey by the Russians, it was transferred to the Ozjzworniek depot where it was not even turned on anymore and transformed into razor blades for the Soviet proletariat and friendly nations in 1956.

Too bad... I couldn't even find one of those used razor blades....