Bavarian Gt 2x4/4
The Gt 2 × 4 /4 of the Royal Bavarian State Railways ( K.Bay.Sts.B. ), then the BR 96 of the DR, was a heavy freight tank locomotive of the Mallet type.
Description
The Mallet locomotive " Gt 2 × 4 /4" was equipped with two working in combination four -coupled chassis. The front to a 15 cm thick coupling pin moveably suspended suspension of the compound steam locomotive was equipped with low-pressure cylinders, rear, rigid -mounted in the locomotive frame chassis was equipped with the smaller high-pressure cylinders. Designer of these heavy locomotive was the then chief engineer and director of JA Maffei, Anton Hammel (1857-1925), who also had the famous S 3/6 developed. Between 1913 and 1914 the first batch of 15 vehicles was purchased and put into service. The locomotives excited much attention at the time and were (1922 transport show in Munich) to see the then commonly held railway shows - often similar with blue or yellow ocher paint and a photo of the chimney crown S 3/6 equipped. No. 5766 (96 016) has been spruced up even as the first locomotive of the second series with bands of brass on the crown fireplace and boiler and brass decorations on the front cylinders downright and had its effect. The same was carried out after the renovation of the second series in 1926 with the same locomotive. Otherwise, the first series had a small fireplace with attachment similar to the BR 38 The usual operating paint the locomotives K.Bay.Sts.B. was green, yellow deposed, with black chassis.
Due to the emergence of the Prussian T 20 (BR 95) with 1'E1' - wheel arrangement in 1922 and better values than those of the initial series in 1922 (No. 5766 ) and in 1923 a second series (No. 5767-5775 ) built and used. She was compared to the first series improved by a greater Evaporative, 0.5 tonnes more carbon storage, greater axle load and operating weight and the short fireplace ( without attachment ). Both series were later modified after the takeover by the German State Railroad Company, to varying degrees and classified as class 96 in their series numbering plan. All locomotives were equipped with a Westinghouse pneumatic double brake, acting on all sets of wheels from the front direction, equipped, the sand tubes initially served the second and fourth of the front wheel drive. After the modification of the second series in 1926, this was additionally equipped with a Riggenbach counter-pressure brake, and sanded seven axes to increase the adhesive friction. The locomotives initially drove consistently with three headlights, after 1926 with a two headlights.
Rebuilding
1925/1926 all engines were rebuilt and reinforced, with the first production run to a lesser extent (such as chimney extension, coal supply from 4 to 4.5 t, boiler data handling ) have been changed as the second series. The following table lists the main features of the change in 2 series:
- Expanded high-pressure cylinder of 520 mm to 600 mm diameter
- Set blowpipe deeper and expanded diameter
- Extended chimney in diameter and slightly shortened
- Reducing the heating / increase the flue pipe number
- Reducing the Gesamtrohrheizfläche
- Enlargement of the superheater
- Installation of a Oberflächenvorwärmers front of the fireplace
- Installing a second air pump in addition to the first
- Installation of a Riggenbach counter-pressure brake
- Large reservoir for carbon from 4.5 tons to 5 tons
- Modified boiler structures ( sandbox, steam dome )
- Modifications to improve the driving behavior ( " spin " of the front - drive ND record)
- Sand tubes for 7 instead of 2 sets of wheels
- Increasing the Lokreibungslast / Lokdienstlast of 123.2 to 131.1 Mp
- Increase in the average tip salmon of 15.4 to 16.4 Mp Mp
Area of application
The locomotives were designed for the steep ramps in the area of K.Bay.Sts.B. been developed. These included the Spessart ramp, the Franconian Forest Railway, the inclined plane and the railway line Eger - Asch (now Cheb Aš ). The mallet design delivered at this size good traction in curves and the narrow mountain road sweeping. The first test drive in 1914 took place on the track Lichtenfels- Rothenkirchen. It was necessary to cope with the steep ramps in a significantly shorter time to operate profitably. For this purpose, it provided particularly as helper locomotive and also as a train locomotive in freight and passenger up to 30 years and more good services and reduced journey times by about 40 %. A slope of 25 ‰ could Malletlok at 25 km / h and 465 t go up, max. 40 km / h for lighter trains.
Locomotive No. 96 019 in 1930 in addition to other high-performance steam locomotives such as the " H02 1001" and a pulverized coal- fired BR to see 58 on the World Economic Conference in Berlin- Tempelhof as Germany's and Europe's heaviest mallet tank engine. Several locomotives were native to the Bws Aschaffenburg, New Market Wirsberg and Pressig - Rothenkirchen. Further deployments were made in Munich, Bruges / Westphalia. (briefly ), courtyard (briefly) and in Eger.
Deployments on May 15, 1935
Decommissioning
Six machines were retired by 1945, 96 015 were lost in World War II. After 1945, the following 18 machines were available: 96 002, 004, 006, 008-012, 016-025. The machines in the Western zones were stationed in Munich and Nuremberg and were retired in 1948 as a splinter even genus with less than 20 copies. The machine 96 002 and 96 024 remained after the war in the DR in the GDR and were led to 1954 in the inventory of raw Stendal.
No sample was preserved. Two highly detailed models of the models from the 2nd Series, 96 016 and 96 025 in scale 1:10 ( 1.82 m long) can be seen at the Deutsches Museum, Munich and Nuremberg Transport Museum. They were produced in the 1930s by apprentices of Raw Ingolstadt.