Analysis of information sources in references of the Wikipedia article "U engine" in English language version.
Both have at their heart a twin-cylinder two-stroke engine that is, in effect, two 125cc Singles mounted one behind the other in a common crankcase, their cranks connected by large gears.
Sato, like Kaaden, realised that the convention twin-cylinder two-stroke, with its cylinders across the frame, coupled to the outward facing carburettors of a disc-valve twin had a major drawback, because of excessive width.
Both have at their heart a twin-cylinder two-stroke engine that is, in effect, two 125cc Singles mounted one behind the other in a common crankcase, their cranks connected by large gears.
