The index feather, also known as the cock feather or the odd-colored feather, is one of the fletchings on an arrow that is positioned differently from the other feathers. It is typically located at the back of the arrow and is used as a reference point to ensure consistent arrow placement and flight.
The index feather is usually made of a different material than the other feathers on the arrow, which helps to distinguish it from the rest of the fletchings. It is often made of a stiffer material, such as plastic or synthetic fibers, while the other feathers are typically made of softer materials, such as real feathers.
The index feather is typically positioned at the back of the arrow, opposite the arrowhead. When an arrow is nocked on the bowstring, the index feather should be positioned either above or below the nocking point, depending on the archer's preference. This consistent placement of the index feather helps to eliminate variability in arrow flight caused by slight differences in arrow orientation.
The purpose of the index feather is to indicate the proper orientation of the arrow when it is placed on the bowstring.
By placing the index feather in the same position each time an arrow is nocked, archers can ensure that the arrow will be oriented the same way and fly consistently from shot to shot. This consistent placement of the index feather helps to eliminate variability in arrow flight caused by slight differences in arrow orientation.
The index feather also helps to indicate the proper direction of the arrow's spin. Most arrows are designed to spin as they fly, which helps to stabilize their flight and increase accuracy. The index feather should always be positioned so that it is pointing in the direction of the arrow's spin, which is typically clockwise for a right-handed archer and counterclockwise for a left-handed archer.
When an arrow is nocked on the bowstring, the index feather provides a reference point for the archer to ensure consistent arrow placement and flight.
By using the index feather as a reference, archers can eliminate variability in arrow flight caused by slight differences in arrow orientation. The archer can ensure that the index feather is always positioned in the same spot relative to the bowstring, which helps to ensure that the arrow is nocked consistently from shot to shot.
The index feather also serves as a reference point for proper arrow spin. By ensuring that the index feather is always pointing in the direction of the arrow's spin, the archer can help to ensure that the arrow stabilizes properly in flight and increases accuracy.