1. What is Arrow FOC?

Front of Center (FOC) is a measurement that describes the balance point of an arrow relative to its length. It's expressed as a percentage and affects arrow flight characteristics and stability.

2. How Does the Calculator Work?

The calculator uses the FOC formula:

Where:

• \( FOC \) — Front of Center percentage
• \( L \) — Total arrow length in inches
• \( AMO \) — Balance point measurement in inches from nock end

Explanation: The formula calculates how much of the arrow's mass is concentrated in the front half of the shaft.

3. Importance of FOC Calculation

Details: Proper FOC improves arrow stability in flight, penetration, and accuracy. Gold Tip recommends specific FOC ranges for different arrow applications.

4. Using the Calculator

Tips: Measure arrow length from nock groove to end of shaft (not including point). Find balance point by balancing arrow on a narrow edge.

5. Frequently Asked Questions (FAQ)

Q1: What is the ideal FOC for Gold Tip arrows?
A: Typically 10-15% for target shooting, 12-20% for hunting. Consult Gold Tip's specific recommendations for your arrow model.

Q2: How does FOC affect arrow flight?
A: Higher FOC increases forward weight for better penetration but may reduce speed. Lower FOC increases speed but may reduce stability.

Q3: How can I adjust my arrow's FOC?
A: Add weight to point (increase FOC) or use heavier nocks/vanes (decrease FOC). Gold Tip offers various point weight options.

Q4: Does FOC recommendation change for different bow types?
A: Yes, compound bows generally perform best with 10-15% FOC, while traditional bows may require higher FOC (15-20%).

Q5: Should I measure FOC with or without fletching?
A: Always measure with fletching installed, as this affects the actual balance point during flight.