Light Tank V4
Encyclopedia
The Light Tank V4 was one of Nicholas Straussler
Nicholas Straussler
Nicholas Straussler was an engineer mainly remembered for devising the flotation system used by Allied amphibious DD tanks during World War II. Born in Hungary, he developed a reputation as an innovative automotive engineer before moving to Britain during the interwar period...

's earlier armoured vehicle projects. The V4 had a cross-articulated three-point suspension with leaf springs and rubber bogie rollers. The V4 was actually used experimentally to develop pontoon devices for ferrying purposes. The tank remained in prototype form only.
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