The DRG Class 86 was a standard goods train tank locomotive with the Deutsche Reichsbahn-Gesellschaft (DRG) (German Imperial Railway Company), intended for duties on branch lines. They were of 2-8-2 wheel arrangement in the Whyte notation, or 1′D1′ h2 in the UIC classification, most often referred to as a Mikado, frequently shortened to Mike, but at times it was also referred as the McAdoo Mikado and, during WWII, the MacArthur. This wheel arrangement allows the locomotive's firebox to be placed behind instead of above the driving wheels, thereby allowing a larger firebox that could be both wide and deep. This supported a greater rate of combustion and thus a greater capacity for steam generation, allowing for more power at higher speeds.
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