This must be one of the most remarkable "barn finds" of all time. Dragged from the bushland where it was found and then lovingly restored, the enormous unit-construction two litre transverse V-four was built by Norwegian engineer Christian Larsen at Norsk Hydro Rjukan in 1922. The engine has four cylinders from 1000cc Indian Powerplus twins.
The sophisticated machine with its aluminium sidecar was in use until 1934 and made many long trips in Norway carrying Larsen, his wife, their three children and two dogs.
Sources: spanjola.no, Tore Olsen, Norskproduserte Motorsykler.