| Bavarian I | |
| Bgcolor: | 0081FF |
| Color: | FFFFFF |
| Powertype: | Steam |
| Builddate: | 1844–1845 |
| Totalproduction: | 24 |
| Uicclass: | 1A1 n2 |
| Leadingdiameter: | 914.5frac=8NaNfrac=8 |
| Driverdiameter: | 1524frac=8NaNfrac=8 |
| Trailingdiameter: | 914.5frac=8NaNfrac=8 |
| Engine Total: | 3390frac=8NaNfrac=8 |
| Tender Total: | 1780frac=8NaNfrac=8 |
| Wheelbasewithtender: | 6825frac=8NaNfrac=8 |
| Over Buffers: | 9798frac=16NaNfrac=16 |
| Weightondrivers: | 6.83t |
| Serviceweight: | 17.14t |
| Tendertype: | 2 T 3,35 |
| Fuelcap: | 600kg (1,300lb) |
| Watercap: | 3.35m2 |
| Firearea: | 0.76m² |
| Lengthinside: | 2895frac=8NaNfrac=8 |
| Smalltubediameter: | 46frac=16NaNfrac=16, 111 off |
| Boilerpressure: | 6sigfig=3NaNsigfig=3 |
| Totalsurface: | 46.45m² |
| Tubearea: | 41.62m2 |
| Fireboxarea: | 4.83m2 |
| Cylindercount: | Two, outside |
| Cylindersize: | 305x |
| Maxspeed: | 400NaN0 |
| Indicatedpower: | 130sigfig=2NaNsigfig=2 |
| Operator: | Royal Bavarian State Railways |
| Fleetnumbers: | K.Bay.Sts.E.: 1–24 (named) |
| Retiredate: | 1874 |
Bavarian A I engines were German steam locomotives in service with the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn) from 1841 to 1871.
Three manufacturers were awarded a contract to build eight locomotives each, with the stipulation that the components of the different machines had to be interchangeable with one another. The engines achieved a speed of 33 km/h on a line with an incline of 1:200. The first engine was retired in 1871 and scrapped. Five examples were rebuilt into B I class 2-4-0 locomotives, four were rebuilt into C I class 0-6-0 locomotives, and four were sold. The last one was scrapped in 1874.
They were coupled with 2 T 3,35 tenders.
| Der Münchner | |
| Bgcolor: | 0081FF |
| Color: | FFFFFF |
| Powertype: | Steam |
| Builder: | Maffei |
| Serialnumber: | 1 |
| Builddate: | 1841 |
| Totalproduction: | 1 |
| Leadingdiameter: | 915frac=8NaNfrac=8 |
| Driverdiameter: | 1524frac=8NaNfrac=8 |
| Trailingdiameter: | 915frac=8NaNfrac=8 |
| Over Buffers: | 9739frac=16NaNfrac=16 |
| Weightondrivers: | 6.8t |
| Serviceweight: | 13.8t |
| Watercap: | 3m2 |
| Firearea: | 0.93m² |
| Boilerpressure: | 6sigfig=3NaNsigfig=3 |
| Totalsurface: | 46m² |
| Cylindercount: | Two |
| Cylindersize: | 305x |
| Maxspeed: | 590NaN0 |
| Indicatedpower: | 100sigfig=2NaNsigfig=2 |
| Fleetnumbers: | K.Bay.Sts.E.: 25 |
| Retiredate: | 1871 |
Der Münchner (a Münchner is a man from Munich) was a Bavarian Class A I engine with the number 25. It was originally built for the Munich–Augsburg Railway Company, a private railway company which ran the route between Munich and Augsburg. In 1844 the line was taken over by the state railway and the engine was transferred into state ownership. A large part of the locomotive came from England, which can be seen from the typically English 'pear' shape of the outer firebox.
It was coupled with a 2 T 3 tender.