Valve Train Dynamics
The Valve Springs page assumes the valve train is stiff. In reality it's not, especially for an OHV pushrod engine. We will first develop a single degree of freedom model, since it is more intuitive. Then we will develop a multiple degree of freedom model, so we can look at spring surge issues. For examples of actual valve train behavior that these mathematical models simulate see video clips at Colorado State Univ. and valve train video on YouTube