Spine

The spine describes the flexibility of an arrow shaft—how much it bends under load. It is a crucial value for proper arrow tuning.

Types of spine:

Static spine

  • Measured under standardized load
  • Expressed as deflection in inches (e.g., 500, 400, 340)
  • The lower the number, the stiffer the shaft

Dynamic spine

  • Actual bending behavior during the shot
  • Influenced by draw weight, draw length, arrow tip weight, and technique

Why spine matters:

  • Foundation for accurate tuning
  • Incorrect spine → side-to-side deviations
  • Affects arrow flight and grouping
Zurück zur Übersicht

Ähnliche Artikel

Arrow Rest
April 4, 2026

Depending on the type of bow, the arrow rest can mean different things. On a primitive bow, it may simply

Read more >
Archer’s Paradox
April 4, 2026

The Archer’s Paradox describes the apparent paradox that, when released, an arrow initially bends and “wraps” around the bow even

Read more >
Anchor
April 4, 2026

The anchor is the final position of the drawing hand on the archer’s face. An anchor point should be consistent,

Read more >