Power Robbing Engine Valve Springs
If you are looking for brain exercises, this topic can be regarded as being one handed chin-ups. http://www.formula1-dictionary.net/desmodromic.html
Forum Discussion
WILDEBILL308 wrote:
I am wondering how they keep the adjustment perfect all the time. You would need to be constantly adjusting your lash or the valve wouldn't be closing completely.
Bill
Wouldn't the combustion chamber pressures to some extent help force the valves closed? The main exception would probably be leakage around the exhaust valve during the intake stroke, and perhaps not even much of that for a turbocharged engine and a cleverly tuned exhaust system.
On some early (four stroke) gas engines, only the exhaust valve was operated via a cam arrangement. The intake valve was just sprung very lightly and negative pressure during the intake stroke pulled the charge into the combustion chamber, while the compression stroke closed it.
