Английская Википедия:Ducati Diana Mark 3
Шаблон:Short description Шаблон:Use dmy dates Шаблон:Use British English Шаблон:Infobox motorcycle The Ducati Diana Mark 3, also known as the Ducati Diana SuperSport and commonly referred to as the Ducati Mark 3, is a Шаблон:Convert single cylinder bevel drive SOHC motorcycle produced by the Italian manufacturer Ducati from 1962 to 1966. It was a higher performance version of the Ducati Diana and sold to the American market only.Шаблон:Sfn In 1963, Cycle World described it as "the fastest, and nearly the smoothest, standard motorcycle in the 250cc class".Шаблон:Sfn It was replaced in 1967 by the Ducati 250 Mark 3.
History
Following the success in racing of the 250 F3, and using an engine based on that of the racer, Ducati introduced its first 250 cc road bikes at the April 1961 Milan Fair. The bikes were offered in two versions, the touring Monza and sports Diana.Шаблон:Sfn The Diana didn't sell well in the US and in 1962 the American importers, Berliner Motor Corporation, persuaded Ducati to make a higher performance model, the Diana Mark 3.Шаблон:Sfn Berliner had previously requested a 250 Scrambler to replace the 200 Motocross.Шаблон:Sfn The scrambler's engine was in a higher state of tune than the Diana, and this engine was used in the Diana Mark 3. The engine has a larger carburettor, higher compression ratio and a hotter camshaft.Шаблон:Sfn The Mark 3 also shares the scrambler's electrical system, using a flywheel magneto and no battery.Шаблон:Sfn The frame was finished in blue and the rest of the bike was blue and silver. As there was no battery, side panels were not fitted.Шаблон:Sfn
In 1965 the model received the big valve head that was used on the European Mach 1 and the larger 29 mm carb the Mach 1 used.Шаблон:Sfn
The bike was restyled for 1966, sharing the same angular styling of the 160 Monza Junior and 350 Sebring. Following criticism of the kickstart arrangement with the rear-set footrests, the bike was changed to have higher bars and footrest in the normal position.Шаблон:Sfn A new design Grimica front brake with an air-scoop was also fitted in 1966.Шаблон:Sfn
The Diana Mark 3 and the Mach 1 were replaced in 1967 with the 250 Mark 3.Шаблон:Sfn
Technical details
Engine and transmission
The single-cylinder, bevel-drive OHC engine is of a vertically-split unit constructionШаблон:Sfn and has alloy head and alloy barrels with austenitic liners.Шаблон:Sfn Ball bearings are used in the main bearings and roller bearings for the big end.Шаблон:Sfn Hairspring valve springs are used to close the valves.Шаблон:SfnШаблон:Sfn Bore and stroke are Шаблон:Convert giving a displacement of Шаблон:Convert. Compression ratio is 10:1. Larger valves were fitted in 1965.Шаблон:Sfn Claimed power output was Шаблон:Convert @ 8,300 rpm, giving the machine a top speed of Шаблон:Convert.Шаблон:Sfn
Fuel is delivered by a 27 mm Dell'Orto SSI carburettor on early modelsШаблон:Sfn and was increased to 29 mm in 1965.Шаблон:Sfn Wet sump lubrication is usedШаблон:Sfn and ignition is by flywheel magneto.Шаблон:Sfn
Primary drive is by helical gears to a multi-plate wet clutchШаблон:Sfn and a 4-speed gearbox.Шаблон:Sfn A 5-speed cluster was fitted from 1965.Шаблон:Sfn Chain drive takes power to the rear wheel.Шаблон:SfnШаблон:Sfn
Cycle parts
The single cradle frame uses the engine as a stressed member.Шаблон:Sfn Rear suspension is by swinging arm with twin 3-way adjustable Marzocchi shock absorbers.Шаблон:Sfn At the front, Шаблон:Convert telescopic forks are fitted.Шаблон:Sfn Brakes are drums, the front being Шаблон:Convert diameter and the rear Шаблон:Convert.Шаблон:Sfn
References
Bibliography
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- Шаблон:Cite web
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