
Remake like old movie & songs:wtf:
Remakes like Desmodronico
Fully controlled valve movement was thought of in the earliest days of engine development, but devising a system that worked reliably and was not overly complex took a long time. Desmodromic valve systems are first mentioned in patents in 1896 by Gustav Mees, and in 1907 the
Ariès is described as having a V4 engine with "desmodromique" valve actuation, but details are scarce. The 1914 Grand Prix
Delage used a desmodromic valve system (quite unlike the present day
Ducati system).
[3]
Azzariti, a short lived Italian manufacturer from 1933 to 1934, produced 173 cc (173 ml) and 348 cc twin cylinder engines, some of which had desmodromic valve gear, with the valve being closed by a separate camshaft.
[4]
The
Mercedes-Benz W196 Formula One racing car of 1954-55, and the
Mercedes-Benz 300SLR sports racing car of 1955 both had desmodromic valve actuation.
In 1956,
Fabio Taglioni, a Ducati engineer, developed a desmodromic valve system for the Ducati 125 Grand Prix, creating the Ducati 125 Desmo.
He was quoted to say…
The specific purpose of the desmodromic system is to force the valves to comply with the timing diagram as consistently as possible. In this way, any lost energy is negligible, the performance curves are more uniform and dependability is better.
The engineers that came after him continued that development, and Ducati holds a number of patents relating to desmodromics. Desmodromic valve actuation has been applied to top-of-the-range production
Ducati motorcycles since 1968, with the introduction of the "widecase" Mark 3 single cylinders.
http://www.msrphotographic.co.uk/html/photo_page_471.html