Quote:
Originally Posted by Hatterasguy
BMW was playing with this idea, I don't know if it ever panned out.
Ducati came up with a pretty good solution.

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Not sure if I follow all of that. Is that a regular cam shaft, driven by the crankshaft? I can see the advantage to this though, I think. I'm guessing that setup closes the valves faster than the springs would, which I gather can be a problem at really high RPMs. Maybe drains less hp to move the valves as well.
However, I can't tell what keeps the valve closed.