Thunderbird

What do these numbers mean?

Speed

Speed rates how fast the disc needs to be thrown to fly as designed. It ranges from 1 to 15 -- the higher the speed, the sharper the rim and the more arm speed it takes to fly correctly.

Glide

Glide rates the lift that keeps a disc aloft during flight. It ranges from 1 to 7 -- a higher glide keeps it in the air longer, but also makes it more sensitive to wind.

Turn

Turn rates how much a disc veers to the side during the fast part of its flight, before fade sets in. It ranges from +1 to -6 -- the more negative the number, the more understable the disc. Understable discs are friendlier for beginners since they need less arm speed, but fly less predictably.

Fade

Fade rates how hard a disc hooks at the end of its flight, once it slows down. It ranges from 0 to 5 -- higher values mean a more overstable, wind-resistant disc, while lower values fly a straighter line.