Ducati Scrambler History

3 Фев 2015 | Author: | Комментарии к записи Ducati Scrambler History отключены
Ducati 125 Scrambler

125/250/350/450 Scrambler

The first versions of the wide-case engine in early 1968 as the 350 cc Scrambler, and in the US as the 350 Scrambler. This was followed afterwards by the 250 Scrambler. The Scrambler was to the most popular of all the wide-case particularly in Italy.

It offered street equipment, with no for off-road ‘ competition as had evident in the prototype 350 Scrambler of and the 250, 350, and even the 450 versions, were essentially

This 350 cc wide-case engine the same dimensions of 76 x 75 mm with the 350 and Mach 1/S racer, and had a 10:1 ratio and a high performance (coded white/green). This had timing figures of inlet 70º before top … centre and 84º after bottom … and the exhaust valve opening 80º bottom … centre and 64º after top … centre.

They certainly required the lever operated from the handlebar. The 250 had a 9.2:1 compression and no compression release. Using 35 mm forks, the 1968 versions of the 250 and had their Veglia speedometer in the Aprilia headlight. They with 315 mm Marzocchi shock later replaced by 310 mm items, the option of stiffer suspension

Very soon after were released they restyled, with a new petrol and seat design that carry through uncs 4. ‘The 350 then became the (or Stteet. Scrambler Sport) for the US

In 1969 the 450 (actually 435.7 cc) available, and featured a new crankcase, and cylinder head castings to the 86 x 75 mm dimensions. The reason why a full 500 created was that the 75 mm … was the that could be used for the of the crankshaft to miss the gearbox To make the engine larger have required a redesign and

Interestingly enough, even the 450 shared the 75 mm … with the the 450 used a con-rod with an length of 140 mm, rather than the 136 mm that was used by both the 250 and Certainly with a rod length to ratio of 1.81:1, the shorter rod was not for the longer … 350, piston acceleration.

For the 450 there was also extra along the top frame tube, like Spaggiari’s 1968 450 and a wider chain and sprock-ets, the use of a 5/8 x 3/8 inch final drive With a 9.3:1 compression and white coded camshafts of the the 450SCR (and identical 3) produced a moderate 27 bhp at 6,500

Ducati 125 Scrambler

The valve timing was inlet 27º before top … centre, 75º after bottom … and exhaust opemng 60º before AeaA centre, anA cos’ing 3lº top … centre. 1n 1969 the US of the 450 Scrambler was marketed by Berliner as the With the 450 came slightly (515 mm) Marzocchi forks, and were also fitted to 250 and 350SCRs.

All the carburettors were changed 1969, with the Dell’Orto SS1 29D replaced by a new square-slide VHB. The 250 a smaller VHB 26AD (from 27 and the 350 and 450, a VHB 29AD. This a new air filter and the traditional rounded became the cut-off Silentium either long or short. At the of 1970 the crankpin diameter was to 30 mm, and the Scramblers then

remained unchanged until when they became similar to the range of Mark 3 They now had Borrani 19-inch and alloy wheel-rims, and the 350 and 450SCR the double-sided front brake, and instruments as the Mark 3. They featured Marzocchi forks exposed staun-chions and new side-covers. The 250 had the single brake and fork (though US versions differed), and all now back to using the older muffler.

In 1973 they the Ducati Elettrotecnica electronic and finally a larger, 32 mm diameter in 1974.

For a short while during a 125SCR was actually built in with a narrow-case Spanish five-speed engine, complete Spanish Amal carbu-rettor. wasn’t a success and was soon but the final 250 Scramblers of 1974 used Spanish-built engines.

Ducati 125 Scrambler
Ducati 125 Scrambler


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