Engine; Timing System - Ducati 999R Anleitung- Und Instandhaltungsheft

Engine

Twin cylinder, four-stroke, 90° "L" type, longitudinal.
Bore:
104 mm
Stroke:
58.8 mm
Total displacement:
999 cu cm
Compression ratio:
E
12.3 ± 0.5:1
Max power at crankshaft (95/1/EC):
102 kW - 139 CV a 10.500 min
Max torque at crankshaft (95/1/EC):
108 Nm at 8,000 rpm
Max rotation speed:
11,500 rpm
Important
Do not exceed specified rotation speed limits under
any running condition.

Timing system

Desmodromic (type) with four valves per cylinder,
operated by eight rocker arms (4 opening rockers and 4
closing rockers) and two overhead camshafts. It is
operated by the crankshaft through spur gears, belt rollers
and toothed belts.
82
-1
Desmodromic timing system (fig. 81)
1) Opening (or upper) rocker;
2) Opening rocker shim;
3) Closing (or lower) rocker shim;
4) Return spring for lower rocker;
5) Closing (or lower) rocker;
6) Camshaft;
7) Valve.
6
1 2 3
7 5 4
fig. 81