Saxon IM

Saxon IM
Hartmann Catalog, 1902
Specifications Configuration: ​  • UIC B’B’ n4vt Wheelbase:  • Bogie 1.100 mm Length: ​  • Over couplers 10.490 mm Width 2.900 mm Height 3.750 mm Axle load 10,5 t Adhesive weight 41,8 t Water cap 3,2 m³ Boiler pressure 14 bar Heating surface:  • Tubes 71,3 m²  • Firebox 2 × 0,9 m² Cylinders 4 High-pressure cylinder 280 mm Low-pressure cylinder 430 mm Valve gear Heusinger Train brakes Heberlein brake
Performance figures Tractive effort: ​  • Starting 57,07 kN

The Saxon I M (one-M) were a class of German narrow-gauge Fairlie locomotives of the Royal Saxon State Railways (Königlich Sächsischen Staatseisenbahnen, K.Sä.St.E.) with a track gauge of 1000 mm (3 ft 3+3⁄8 in). In 1925, Deutsche Reichsbahn grouped these locomotives into their DRG class 99.16.

Overview

In 1902, the Sächsische Maschinenfabrik in Chemnitz built three identical Fairlie locomotives for the narrow-gauge railway Rollbockbahn in Reichenbach im Vogtland. Their factory numbers were 2647 -2649 and received the numbers 251-253 by the Royal Saxon State Railways.

Fairlie locomotives were chosen due to the curvy railway line that also went through narrow alleys. The locomotives operated between Reichenbach im Vogtland and Oberheinsdorf. The main reason for having a narrow-gauge railway there was to connect businesses in the countryside to the city and the national rail network. Standard gauge wagons were temporarily placed on narrow-gauge Rollbock's, so that they were able to transport goods from the businesses next to the narrow-gauge line. At the main station the Rollbock's were removed and the goods were able to be transported on standard gauge nationwide.

Technical features

The locomotives had cow catchers and all driving wheels entirely covered to protect the chassis from damage and people from harm. This was required because for the most part, the line was on the road. Originally, these double Fairlies also had roofs that were removed in the late 1920s when the Deutsche Reichsbahn took over the railway and also changed the color scheme from the Saxon green to black. It was also possible to control the locomotives speed from both ends.

Locomotives

locomotive list
sax. No.	Factory No.	Built	DR-No.	Withdrawn	Details
I M 251	2647	1902	99 161	1963	scrapped
I M 252	2648	1902	99 162	1964	1971 to VMD; 1999 permanently lent to Traditionsverein Rollbockbahn e.V.
I M 253	2649	1902	99 163	1942	Lost at sea in 1943

Literature

• Manfred Weisbrod, Hans Wiegard, Hans Müller, Wolfgang Petznick (1995), Deutsches Lok-Archiv: Dampflokomotiven 4 (Baureihe 99) (in German), Berlin: transpress, pp. 34–37; 243, ISBN 3-344-70903-8CS1 maint: Multiple names: authors list (link) CS1 maint: Unrecognized language (link)
• Fritz Näbrich, Günter Meyer, Reiner Preuß: Lokomotiv-Archiv Sachsen 2. transpress VEB Verlag für Verkehrswesen, Berlin 1984.
• Günther Reiche: Richard Hartmann und seine Lokomotiven. Oberbaumverlag, Chemnitz 1998, ISBN 3-928254-56-1

External links

• Website of the Rollbockbahn association
• 99 162 1936 in Reichenbach
• 99 162 1936 in Oberheinsdorf

References

de:Sächsische I M

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