Yo-yo Balls Testing Equipment

The yo-yo ball is mounted in the same spindle for rotating while the yo-yo rope extension test equipment creates a length measurement system (to determine the elongation length). The test line (one end fixed in the ball, the other end fixed on the trolling reel) is connected to the encoder when the yo-yo ball rotates at a speed of 80 revolutions per minute. The ball's line will stretch along the centrifugal direction, and since the trolling reel and the encoder's spindle are in free states, the bearing friction can be disregarded.