5 cyl interference

[cobram at juno.com]

 "Peter Berrevoets" <pjberr at home.com> writes:

> I don't know if everyone appreciates that the penultimate Ducati 
> bevel drive was a Desmodromic cylinder head whereby the valves 
>were mechanically  opened and closed rather than opened and 
>sprung shut. Unique in design 

Not that anyone has said so, but making it sound like Ducati invented the
system.  The system was used on the earliest of engines (early 1900's),
but the complexity and expense phased it out.   
Ducati is however the only manufacturer that's even made Desmodromic
engines succeed in the "civilian" market.  The major advantage to this
system is  no floating valves, no matter how high you rev the engine.
Found a drawing of the system: 
http://www.usq.edu.au/users/grantd/mcycle/desmo.htm  .
Defintily true about the sound it makes, you can tell it's a Ducati long
before a visual is aquired.  

BCNU,
Cobram at Juno.Com
http://www.geocities.com/MotorCity/Flats/1469/

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