Ducati new generation two-valve L-twins
Resulting in better performance and reliability esp. by improving the heat balance of the engine.
Restricted to the desmo-head the following has been "restyled":
. Complete new casting (cast by gravity resulting in a better crystal structure)
. Larger valves 45 mm (intake) and 40 mm (exhaust) means improved breathing
. Narrower valve angle (from 60 to 56 degrees) means improved valve seat and desmodromic timing part arrangement, which now operates with improved geometries
. Decreased valve stem diameters (from 8 mm to 7 mm)
. Reshaped combustion chamber
. New designed valve seats made from beryllium bronze (less wear and better heat dissipation)
. Twin spark/double ignition (considerably improves combustion)
. New (hollow and lighter) camshafts turning in plain sliding friction bearings
Source:
BIKE September 2002 p. 26-27 (News section): "Ducati breathes life into air-cooled range"
The site of Ducati.com: section "Ducati Technical" : the article of Stefano Bianucci "The pompone legend continues with the new 1000 DS"
MO nr. 12 Dezember 2002 p. 14-23: Ducati Monster 1000S : neuer Zweizylinder von Joerg Lohse and Jo Soppa
22-01-2003 is the publication date of the European Patent application EP1277921.
Applicant is Ducati Motor Holding SPA (IT) and inventor is Gianluigi Mengoli. [See three of the 14 patent pics].
[Classification = Group 6 A]
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