Why do some discs fly to the left, and others go right? Like clubs in ball golf, Discraft golf discs are designed to travel on a variety of flight paths to help you meet any course challenge. The way we define a disc's flight characteristics is through the term stability.
Let's assume you are a right handed player using a backhand throwing motion. If you throw a disc on a straight, flat line using average power and it continues to fly straight, that disc is considered to be stable, and would be given a stability rating of (0).
Now you choose another disc, and this one fades to the right. We call that disc understable, and would give it a negative stability rating of (-1) for a gentle turn, and (-3) for a more severe turn. When it comes to drivers, understable discs are easiest for new players to control.
Most golf discs -- especially drivers -- tend to fade to the left, which would put them somewhere within the overstable range. This is the more natural flight path for sharp edged discs. These discs get a positive rating of (1) for a subtle fade, or higher (2.5) for a harder turn