{, class="wikitable float-right" width="310" align="right" , -- ! colspan="2" style="color:yellow; background:#0B4559" , TAG 7
, -- ! colspan="2" , , - , Quantity , , 1 , - , Manufacturer , ,

Krauss-Maffei KraussMaffei is a German manufacturer of injection molding machines, machines for plastics extrusion technology, and reaction process machinery. It was acquired by ChemChina in 2016. History Locomotives KraussMaffei was formed in 1931 from a me ...

, - , Entered service , , 1936 , - , Wheel arrangement ( Whyte) , , 2-8-2T , - , Axle arrangement ( UIC) , , 1'D1' h2t , - , Average

axle load An axle or axletree is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to the vehicle, with the wheels rotating around the axle. In the former case, bearin ...

, , 11.7 Mp
114.7 kN , - , Length over buffers , , 11,600 mm , - , Ø

Driving wheels On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons (or turbine, in the case of a steam turbine locomotive). On a conventional, non-articulated locomotive, the driving wheels are all coupled to ...

, , 1,100 mm , - , Ø

Leading wheels The leading wheel or leading axle or pilot wheel of a steam locomotive is an unpowered wheel or axle located in front of the driving wheels. The axle or axles of the leading wheels are normally located on a leading truck. Leading wheels are used ...

, , 850 mm , - , Ø

Trailing wheels On a steam locomotive, a trailing wheel or trailing axle is generally an unpowered wheel or axle ( wheelset) located behind the driving wheels. The axle of the trailing wheels is usually located in a trailing truck. On some large locomotives, ...

, , 850 mm , - , Top speed , , 70 km/h , - ,

Boiler A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including water heating, centr ...

overpressure , , 137.3 kN/cm² , - ,

Piston stroke In the context of an internal combustion engine, the term stroke has the following related meanings: * A phase of the engine's cycle (e.g. compression stroke, exhaust stroke), during which the piston travels from top to bottom or vice versa. * Th ...

, , 508 mm , - ,

Cylinder bore In a piston engine, the bore (or cylinder bore) is the diameter of each cylinder. Engine displacement is calculated based on bore, stroke length and the number of cylinders: displacement = The stroke ratio, determined by dividing the bore by ...

, , 460 mm , - , Grate area , , 1.69 m² , - , Evaporative heating area , , 66.11 m² , - , Superheater area , , 32.60 m² , - , Power , , 470 PSi , - ,

Adhesive weight Adhesive weight is the weight on the driving wheels of a locomotive, which determines the frictional grip between wheels and rail, and hence the drawbar pull which a locomotive can exert. See also *Factor of adhesion An adhesion railway relie ...

, , 453.1 kN , - , Service weight , , 596.2 kN , - , Brakes , ,

Compressed-air brakes A railway air brake is a railway brake power braking system with compressed air as the operating medium. Modern trains rely upon a fail-safe air brake system that is based upon a design patented by George Westinghouse on April 13, 1869. The ...

The TAG 7 is a superheated steam locomotive, that was developed and built in 1936 by

as ''EAG 7'' for the private ''Schaftlach-Gmund-Tegernsee Railway Company'' (''Eisenbahn-Aktiengesellschaft Schaftlach-Gmund-Tegernsee'' or ''EAG'') - later the Tegernsee Railway AG (TAG). Today it belongs to the Bavarian Localbahn Union. This tank locomotive with its 1'D1' axle arrangement, together with its two sister engines LAG Nos. 87 and 88, is the last and most powerful branch line (''Lokalbahn'') locomotive to be built in

Bavaria Bavaria ( ; ), officially the Free State of Bavaria (german: Freistaat Bayern, link=no ), is a state in the south-east of Germany. With an area of , Bavaria is the largest German state by land area, comprising roughly a fifth of the total lan ...

. Its power of 470 PSi enabled a top speed of 70 km/h in both directions. The EAG needed the new engines to relieve its two smaller locomotives, nos. EAG 5 and 6 ( Bavarian GtL 4/4s) and to gradually take the aging and rickety EAG 3 and 4 out of service. TAG 7 proved itself so well, that a year later two more engines were built by the

Lokalbahn AG The Lokalbahn AG company (''Lokalbahn Aktien-Gesellschaft''), or 'LAG' for short, was a private company based in Munich, Bavaria, whose lines of business was the construction and operation of branch lines (the so-called ''Lokalbahnen'' or ''Sekundä ...

(the aforementioned LAG Nos. 87 and 88). TAG 7 served until 1975 as the reserve loco for the Tegernsee Railway (TAG), but at the same time, during the 1970s, was already being used for museum runs, organised by a working group of the ''German Railway History Company'' or DGEG. Because there was a threat that the engine would have to stop operating and be scrapped due to its licence running out, the Bavarian Localbahn Union was founded in order to raise the money for the required general inspection. The engine - de jure still the property of the TAG - remained stabled during the 1990s at Tegernsee, whilst the Localbahn Union paid for all further inspections and maintenance. In 1999, after the transfer of operations on the Tegernsee Railway to the Bavarian Highland Railway (''Bayerische Oberlandbahn''), the TAG finally sold the engine to the Union. At the same time the

locomotive shed The motive power depot (MPD) or locomotive depot, or traction maintenance depot (TMD), is the place where locomotives are usually housed, repaired and maintained when not being used. They were originally known as "running sheds", "engine she ...

in Tegernsee had to be cleared. TAG 7 has been stationed in Landshut shed since and is once again in service. Since May 2005 TAG 7 has had PZB 90 train running control system. The locomotive is currently out of order due to a boiler damage, the owner BLV plans to build a new boiler.

External links

Brief information about the TAG 7 by the TAG's successor company
2-8-2T locomotives Locomotives of Bavaria Railway locomotives introduced in 1936 Krauss-Maffei locomotives