Ata Speed Calculator

ATA Speed Equation:

\[ ATA\_s\_calc = v\_ATA\_s \times (70 / Draw\_ATA\_s) \times (30 / Draw\_l\_ATA\_s) \]

Measured Speed (v_ATA_s):

fps

Draw Weight (Draw_ATA_s):

pounds

Draw Length (Draw_l_ATA_s):

inches

Calculated ATA Speed (ATA_s_calc):

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1. What is the ATA Speed Calculator?

The ATA Speed Calculator determines the standardized arrow speed according to ATA (Archery Trade Association) specifications. This calculation normalizes arrow speed measurements across different bow setups for fair comparison.

2. How Does the Calculator Work?

The calculator uses the ATA speed equation:

\[ ATA\_s\_calc = v\_ATA\_s \times (70 / Draw\_ATA\_s) \times (30 / Draw\_l\_ATA\_s) \]

Where:

\( v\_ATA\_s \) — Measured arrow speed (fps)
\( Draw\_ATA\_s \) — Actual draw weight (pounds)
\( Draw\_l\_ATA\_s \) — Actual draw length (inches)

Explanation: The equation normalizes arrow speed to a standard 70-pound draw weight and 30-inch draw length for consistent comparison across different bow configurations.

3. Importance of ATA Speed Calculation

Details: Standardized ATA speed measurements allow archers to accurately compare bow performance regardless of their specific setup. This is particularly important for competitive archery and equipment selection.

4. Using the Calculator

Tips: Enter your measured arrow speed in fps, actual draw weight in pounds, and actual draw length in inches. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why use ATA standardized speed instead of actual measured speed?
A: ATA standardization allows for fair comparison between different bow setups by normalizing to common reference points (70 lbs draw weight, 30" draw length).

Q2: How is arrow speed typically measured?
A: Arrow speed is usually measured with a chronograph that records the time it takes for an arrow to pass between two sensors.

Q3: Does arrow weight affect the calculation?
A: The ATA standard specifies using a 350 grain arrow for speed measurements, so your measured speed should be obtained with this arrow weight for accurate ATA speed calculation.

Q4: Are there limitations to this calculation?
A: This calculation assumes linear relationships between draw weight, draw length, and arrow speed, which may not hold perfectly true in all cases.

Q5: Why are 70 pounds and 30 inches used as standards?
A: These values represent common reference points in the archery industry that allow for consistent comparison across different equipment setups.