Tsar Tank (Lebedenko machine)
In service - - -
A nine-metre tricycle war machine that bogged down on its first trial and rusted in the woods until 1923.
Built byLebedenko design bureau
Development history
Nikolai Lebedenko's design put two nine-metre spoked wheels at the front and a small trailing roller behind, on the theory that huge wheels would cross any trench. Built in secret near Dmitrov and tested in August 1915, the prototype snapped branches and moved under its own power, then sank its rear roller into soft ground and could not be recovered. Work stopped, the hulk stayed in the forest until it was scrapped in 1923. It is included here as a documented experiment, never a service vehicle.