The motion came directly from Japan in early December; were set up by the research and Development Department, R & D, on the basis of two prototypes used by Balestrieri and De Petri the Pharaohs, so were derived from monoclindriche XL 600 LM.
The team of Honda France had instead of cars driven by twin-cylinder engines developed by HRC, more powerful but their first desert experience. Wire managersItalian action wanted to prioritise the mono for more guarantees that it offered in terms of reliability, However was always considered that to realize these motorcycles in Japan the parent spent, only in study, the beauty of a billion lire.
The machine had a bore and stroke of 100 x 82 mm for a displacement of 643 CC.; the power was not significant due to the poor quality of gasoline found in Africa, However rambled on 51 horses obtained with a compression ratio of 8,5:1 and with a single carburetor 40 mm in diameter.
With gearbox and clutch closely derived from the XL series, the Honda of Dakar could push rates up to about 170 kilometers per hour, Thanks to the new fairing which, the tests carried out in Japan, had proved its worth by allowing you to earn about 10 kilometres per hour.
The wheelbase was 1520 mm, on motion of Crossbowmen and Orioli, While De Petri the machine was a little’ shorter because «Cyrus» had demanded a different inclination of the Steering head tube; the fork is from 43 mm and is of Showa as suspension unit who worked on a Pro Link redesigned with linkage below the swingarm.
Interesting the solution adopted for the hull, three pieces, the bottom had two spare water tanks and about a pound of lubricant to use in case of need; the fuel tank capacity was 36 litres that were increased to 55 rear speakers.
Upon arrival in Dakar they classified; Crossbowmen to 3rd place, Dalia 5° and 6° Edi Orioli.