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Disc Flight Number Breakdown

The 4 Pillars of Disc Flight: Speed, Glide, Turn, and Fade

Understanding disc flight numbers isn’t just about collecting a range of discs that move in different directions; it’s about mastering the art of selecting the perfect disc for every shot you face on the course. From tricky positions to strategic plays that inch you closer to the basket, the right disc, when thrown correctly, becomes your best ally. 


Typically, disc manufacturers have four numbers to note the flight characteristics of the disc. Here are the flight numbers based on the Innova Xcaliber below:

Speed: 12

Glide: 5

Turn: 0

Fade: 4



Do Flight Numbers Matter?

Absolutely, flight numbers matter a lot in disc golf. These numbers are crucial for understanding how a disc will behave in the air, allowing players to make informed decisions when selecting their discs. Let's take the Innova Leopard3 and the Innova Eagle as examples. Both are fairway drivers with a speed rating of 7, which indicates how fast they need to be thrown to achieve their intended flight. However, their other flight numbers tell a more detailed story.


The Eagle is known for its stability. It typically has a lower Turn and higher Fade compared to the Leopard3. This means the Eagle will resist turning over to the right (for a right-handed backhand throw) and will finish with a strong fade to the left. This stability makes the Eagle a reliable choice for controlled, predictable flights, even in windy conditions.

On the other hand, the Leopard3, with its higher Turn and lower Fade, is more understable. It tends to turn more to the right before gradually fading left. This makes the Leopard3 ideal for players looking to shape their shots and achieve maximum distance with less effort. It's particularly useful for newer players or those with slower arm speeds, as it offers a smoother, straighter flight path.

By comparing these flight numbers, you can better understand the strengths and weaknesses of each disc and choose the right one for your needs. So, yes, flight numbers are not just random values—they provide essential insights that can significantly impact your game.


Let’s dive deeper into the numbers: Speed, Glide, Turn, and Fade, and how they translate to on-course performance.


Speed (1-15)


Speed is your disc’s potential velocity through the air. With ratings from 1 to 15, understanding speed helps you gauge the power needed for your disc to achieve its designed flight path. Speed is noted as the first number on the left. For example, the disc speed is 12 in the photo above. Beginners may favor slower discs (1-5) for their easier manageability, while seasoned players can harness the full potential of faster discs (13-15) to cover greater distances. 

Glide (1-7)


Glide is the disc's ability to maintain loft during flight. Higher glide ratings mean your disc can catch more air and travel further, ideal for open and long-distance shots. Yet, with great glide comes the need for control, especially under windy conditions where too much glide could send your disc off course.

Turn (-5 to +1)


Right after leaving your hand, the disc’s Turn influences its initial flight direction. Negative numbers signify a disc that can "turn over" easily, making it a favorite for intricate shots that need to curve around obstacles. A disc with a Turn closer to +1 is more resistant to turning, favoring players with powerful throws or those facing a headwind. This characteristic allows players to experiment with creative and complex throws, enhancing the game's dynamic nature.

Fade (0-5)


As the disc slows, Fade dictates its end-of-flight behavior, pulling it left (for right-hand, backhand throws). A higher Fade number means a more pronounced curve, offering predictability in how your disc will conclude its journey. Mastering Fade allows players to plan their approach and landing with precision, crucial for navigating tight spaces near the basket.

Stable vs. Understable Discs

As we delve into the world of disc golf flight numbers, the terms stable and understable become key in understanding a disc’s behavior. Stability is closely tied to the Turn and Fade numbers on your disc. Stable discs, which generally have a Turn close to 0 and moderate Fade, fly predictably straight for the majority of their flight when thrown with proper power. They're invaluable for shots that demand precision and consistency, particularly in challenging wind conditions. 

On the contrary, understable discs, indicated by a negative Turn number, are designed to curve right more aggressively in the early part of their flight for right-hand, backhand throws. This quality makes them suitable for creating dynamic shots that navigate around obstacles, as well as being more forgiving for players with less powerful throws. 

The interplay between Turn and Fade provides a nuanced approach to selecting your discs, allowing you to tailor your bag to match your style and the courses you conquer. By considering these flight numbers in your selection process, you unlock the potential to craft a diverse and effective arsenal that caters to every aspect of your game.

Beyond the Numbers

Grasping these flight numbers transforms your game from a simple disc throw to a strategic sport. Each shot, whether to recover from a tough spot or to make a play closer to the basket, becomes a decision-making process where your understanding of each disc’s flight characteristics comes into play. It’s not just about the discs that veer left or right, it’s about choosing them for their abilities to fulfill the demands of specific situations on the course that are specific to your game and how you throw.

Visit us at Disc Golf Mart for personalized advice and insights into selecting the perfect discs for your playing style. Whether you’re aiming to refine your technique or just starting out, our experts are here to guide you through the fascinating world of disc golf flight numbers, ensuring every disc in your bag serves a purpose towards improving your game.