>then to take that one
> step further (as F1 teams do), you can eliminate the cam shaft
> altogether.....using air for example to open and close the valves, or air
to
> open and springs to close....etc
The air in F1 valve trains act as a spring. The high rpm's that the engine
turns creates problems with conventional springs. The F1 motors do use
light steel springs to hold the valves closed when the motor is not running
and at startup. The valves are still actuated by a conventional camshaft.
Andy
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