In high-performance four-stroke cylinder heads, valve springs must supply sufficient closing force to prevent valve float at maximum engine RPM while avoiding destructive coil bind at peak camshaft lift. This mechanical utility provides an interactive 3-variable proportional estimator designed for comparing baseline seating forces, dynamic rate coefficients, and valvetrain geometric safety margins across cylinder head builds.

### Valvetrain Load Sizing Architecture

Rather than executing non-linear finite element wire stress simulations or measuring progressive damper friction, the component computes proportional drivetrain sizing indexes from three user inputs: - **Primary Load Dimension (`val1`, default 100):** Base installed seat force index or closed spring height dimension. - **Dynamic Rate Multiplier (`val2`, default 20):** Camshaft gross lift coefficient or operating stiffness factor. - **Safety Divisor (`val3`, default 5):** Minimum solid stack coil-bind clearance allowance or safety threshold.

Derived outputs displayed in the live results panel: 1. **Primary Force Factor:** $$\text{Load Factor} = \frac{\text{val1} \times \text{val2}}{\max(0.01, \text{val3})}$$ 2. **Geometric Root Metric:** $$\text{Root} = \sqrt{\max(0, \text{val1} \times \text{val2})}$$ 3. **Proportional Operating Ratio:** $$\text{Operating \%} = \left(\frac{\text{val1}}{\text{val1} + \text{val2}}\right) \times 100\%$$

### Worked Valvetrain Example

Evaluating a performance pushrod V8 valvetrain configuration: - **Baseline Seat Index (`val1`):** 130 - **Dynamic Lift Multiplier (`val2`):** 25 - **Safety Divisor (`val3`):** 6 - **Resulting Primary Force Index:** $(130 \times 25) / 6 = 3250 / 6 \approx 541.67$ - **Valvetrain Geometric Root:** $\sqrt{130 \times 25} = \sqrt{3250} \approx 57.01$ - **Relative Seat Proportion:** $[130 / (130 + 25)] \times 100\% = (130 / 155) \times 100\% \approx 83.87\%$

### Client-Side Execution Note

This estimator processes mathematical operations strictly on your device using client-side JavaScript. Valvetrain specifications and custom engine dimensions are never uploaded to remote servers.