So, Nicolas Fremau used his Christmas holidays to make with LEGO a model of the innovative three-speed transmission that he first imagined on paper. "I had the idea of doing this first to help me understand what to do. After about twenty hours of 'work' under the slightly surprised eye of my son, the model was born," he explains.
To do this, it was not enough to fit the bricks together. Nicolas had to assemble the different axes and transmission rings, glue and drill them to fit into a cradle, motorize the whole thing, etc. A real engineering work that allowed Nicolas Fremau to test "live" the different possible modes of operation between the engines. Better still, he discovered new ones that he had not thought of during his previous theoretical analysis. This strengthened his conviction that he was on the right track with this prototype - undoubtedly the least expensive in Renault's history - which is as surprising and unexpected as the technical solution was innovative.