How a disc flies, before you throw it
One disc at four arm speeds, or up to six discs side by side. Every line uses the same flight model as DiscScout.
Flight chart
Estimated flight · Arm speed: Intermediate · Right-hand backhand · four lines: Beginner to Pro
Reading the chart
The tee is at the bottom, the throw goes up the page, and the dashed line is straight ahead. Negative turn moves the disc to the right for a right-hand backhand through the middle of the flight; fade pulls it back left at the end. A disc with a lot of turn and little fade finishes right; a disc with no turn and a lot of fade finishes left.
With one disc, the four lines are the four arm speeds. The slower lines are shorter and fade earlier, because the disc is being thrown below the speed it is designed for. The faster lines carry further and show more turn before the fade.
Why the chart mirrors
Right-hand backhand and left-hand forehand curve the same way through the air, so they share a chart. Right-hand forehand and left-hand backhand mirror it. Choosing a throw rotates the picture; it does not change the distance.
Comparing discs
Add up to six discs and the chart draws each at the selected arm speed, in its own colour. Two discs that look close here might still be worth carrying if one is much older or a different plastic; the chart shows the numbers, not the wear. The bag builder goes further and marks near-identical flights inside a bag.
What the estimates are not
The model is a visual approximation tuned to resemble published flight charts. It does not simulate lift, spin, wind or release angle. Treat it as a way to compare discs and arm speeds, not as a prediction of a particular throw. The same model runs in DiscScout, so the app and this page agree.
Buying or rethinking a bag? The bag builder charts every disc together, with coverage and gaps.
What do the four lines mean?
One disc thrown by a beginner, an intermediate, an advanced and a pro arm. Slower arms get less distance and more fade; faster arms get the disc to turn first. The label at each landing names the arm speed.
Why do some throws mirror the chart?
Left-hand backhand and right-hand forehand curve the other way, so the chart mirrors them. Right-hand backhand and left-hand forehand share the same shape.
Which disc numbers should I enter?
The manufacturer's four numbers: speed, glide, turn, fade. If a disc is beat in, enter the numbers it flies like now. The chart uses whichever numbers you give it.
Are these measured flights?
No. They are estimates from the flight numbers and arm speed, tuned to look like published flight charts. Wind, plastic, wear and release change the real flight.
Can I compare more than six?
Six is the limit so the colours and the labels stay readable. For a whole bag, use the bag builder, which also shows coverage and gaps.
Sources
- DiscScout's flight model (FlightModel.swift), SGWNI. Checked 2026-11-05. A visual approximation tuned to published charts, not a physics simulation. Ported to this site unchanged.
- Flight ratings system, Innova Discs. Checked 2026-11-05. Each manufacturer rates its own discs; the numbers are not a shared scale.
- Discraft flight ratings, Discraft. Checked 2026-11-05.
DiscScout
Chart the discs you actually throw in DiscScout
DiscScout keeps stock and real numbers for every disc in your bag, records the throws, and shows what you have thrown a given distance.
