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| | |  Written: 2002/07/06 : 13:25. Read 9928 times (206/day). | Second part, the bicylindres
(Automated translation with microsoft BING)
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< b > parallel bicylindres < /b >
"parallel twin" is typically English lorsqu�il is vertical, like the BSA Triumph. Honda will resume this architecture for his Honda CB 450, Yamaha for the XS - 1, Kawasaki for the KZ 400 and its neoclassical W 650.
The gently sloping parallel Twin is more common. It appears at Honda with the 72 BC. TRX and Yamaha TDM 850 remains the most well known.
Tilting the cylinder is slightly lowered the centre of gravity and it allows "verticalizing" d�admission for a better power supply ducts.
The horizontal Twin were very rare.
[for]Character
[for]Good flexibility
[to] look retro for the vertical twin
[against]History of fashion...[against]
< b > v < /b > bicylindres
V-Twin lends itself to many d�architectures with some positionings in the meaning of the framework (Harley, Ducati) or (e), travers (Guzzi) and highly variable d�ouverture angles of 45 ° for the Harley, 90 ° for the Ducati.
A V in the sense of the framework promotes the motorcycle l�étroitesse. The V twin engine is also a brand for Ducati, Harley and Guzzi image.
The first V-twin Japanese modern l�ère is the Honda CX (1978), a V across the frame at the Guzzi (d�ailleurs still very used by couriers).
The first V-twin Japanese in the meaning of the framework appears on the Yamaha XZ 550 1981.
[for]Aesthetic
[for] history
[for] performance
[for] close
[against]Less flexible qu�un 4 cylinder
[However] more sensitive to vibration
[against] cylinder heads thus separated costly
[motorcycle] The longitudinal V
C�EST motor sport par excellence. It is narrow and therefore very aerodynamic.
If l�angle of the V is 90 °, it is balanced naturally to the vibrations of the first order. C�EST the configuration selected by Ducati, Suzuki Sv 650, TL 1000, Honda and the VTR 1000. To d�avoir a better compactness, is sometimes reduced V. l�angle If l�on remains close to 90, the vibrations remain acceptable (as the Voxan with a V to 72 °).
[motorcycle] The transverse V
S�IL presents the same qualities and defects than the longitudinal V, however, it provides some interesting features:
-Cooling is done evenly.
-This architecture is particularly suited to l�utilisation d�une secondary transmission by universal. C�EST fetish configuration of Guzzi.
< b > the twin flat or Boxer. < /b >
C�EST the engine of the BMW who characterized this brand since 1923.
For 40 years, no other constructor n�osé copy this particular architecture.
C�EST a particular case because c�est a V opened at 180 °.
[for]Originality
[for] Center of gravity down
[for] good cooling
[against]Width
[against] couple of reversal
[line]
First part: < a href = "news.php? ref =" 70 > monos, 3, 5 and 6 cylinders < /a >.
Second part: < a href = "news.php? ref =" 71 > bicylindres < /a >.
third part: < a href = "news.php? ref =" 72 > 4 cylinder < /a >.
(Automated translation with microsoft BING)
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(not translated yet) Si ducati nous était conté
