Stable generally means the yoyo is less likely to go off axis. For a yoyo to achieve this type of stability, the most used methods are a larger diameter, medium width, lower walls, and massive amounts of rim weight. A yoyo does not need to be heavier to be stable, look at the Draupnir. A string centering bearing also helps add to stability, despite what many might say. By keeping the string in the center, this eliminates the possibility that the string might cause the yoyo to go off axis by rubbing against the walls. Most commonly used dimensions are 55-56mm diameter, and 41-43mm width.
1 Like