Technical Calculator

Draw Length Calculator

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Draw duration?

it is the distance from the nock factor of the throat to the grip of the bow +1.75”.

The draw period is the pull-in inches from the apex of the string to the throat of the grip.

For accurate estimation relative to wingspan need to use the draw period calculator.

The way to measure Draw duration for Compound Bow?

Measuring draw length is simple and calls for simplest three steps:

  • Step 1:degree the Wingspan:
  • Step 2: Calculate Base Draw length
  • Step 3: Round all the way down to Nearest half of-Inch

formula to degree Draw length:

The system for calculating the bow length is:

DL = WS/2.5

Where:

DL = Draw period in Inches

WS = Wingspan in Inches

To measure draw length of the bow add + 1.75″

DL for Bow = [WS/2.5]+ 1.75″

Practical Example:

suppose the wingspan of the archer is 40 inches. How do you measure the draw duration on a compound bow?

Given:

  • Wingspan (WS): 40 inches
  • Draw Length (DL): ?

Solution:

  1. Step 1: Use the formula to calculate draw length:

    DL = WS / 2.5

    Substitute the values:

    DL = 40 / 2.5

    DL = 16 inches

  2. Step 2: Convert draw length to centimeters:

    DL in centimeters = 16 × 2.54

    DL in centimeters = 40.64 cm

  3. Step 3: Calculate the draw length of the bow:

    Add 1.75 inches to the draw length:

    DL of Bow = 16 + 1.75

    DL of Bow = 17.5 inches

  4. Step 4: Convert the draw length of the bow to centimeters:

    DL of Bow in centimeters = 17.5 × 2.54

    DL of Bow in centimeters = 44.45 cm

To make your goal extra precise and accurate, using the arrow length calculator is a high-quality choice for determining the draw duration.

  References:

From the supply of bowhunting.com: Draw length