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Stability Options
Valet
Posted: Friday, January 08, 2010 8:16:52 PM

Rank: Veteran

Joined: 11/15/2009
Posts: 145
Location: Independence

Can anyone explain disc stability to me?  What is under/over stable?  Can a plastic play a role in the stability, is it the disc, or does the weight play into it?  Sorry, I'm a newbie and this is one of the many things that puzzle me as I learn the game. 

L_Stephens
Posted: Friday, January 08, 2010 9:06:22 PM

Rank: Extreme Veteran

Joined: 7/6/2008
Posts: 437
It's a very simple question with a very long and complicated answer. See me tomorrow at Harbin and I will explain everything to you in a detail that may have you looking like a deer caught in the headlights...but a simple answer is:

When thrown flat for a right handed person...with perfect technique....stable means it flies reasonably straight as an arrow....understable means it will fly to the right...either as a nice slow turnover...or to the extreme that it flips hard...hits the ground on its edge and becomes a roller....Overstable means that it will go left....either as slow turning hyzer...or to the extreme of a hard left meat hook.

Different plastics cause variations in how the wind moves over the disc in flight and how that flight plate reacts and moves...sometimes because one plastic is actually a different shape than another because of the cool down process at the factory....the color of the disc can also cause different stabilities because a blue coloring will cause the disc to cool at a different rate than a red coloring additive and thus slightly alter the shape and/or the exterior texture.

Weights affect stability because it is harder to throw a 174G driver as fast as a lighter driver...speed is the factor here...how fast that air is flowing over that airplane wing we call a disc...also different weight disc may have plastic thicker or thinner at different parts of the disc causing slight alterations to the gyroscopic forces....

Anyway...disc golf is a lesson is Physics....where your knowledge expands the more you play.
L_Stephens
Posted: Friday, January 08, 2010 9:14:03 PM

Rank: Extreme Veteran

Joined: 7/6/2008
Posts: 437
When you look at the stability ratings on a disc...remember..those are general terms and misleading really...different discs are stable/overstable/understable to different people because of the speed and spin each of use exerts on the disc. I wish a disc would simply say 'In order to achieve the desired throwing line with this disc you must throw in the 45-50mph range'....anything less will be a hyzer...anything more will be an anhyzer. Too many people buy a disc that needs 55mph of launch speed when they can only throw 30mph...and wonder why that brand new Boss only went 150feet and then knifed right into the ground...when their friend...who can throw 55mph gets a nice little right hand turn for the first 400 feet and then a slow hyzer finish out to 600 feet.
woottebs
Posted: Friday, January 08, 2010 9:35:14 PM
Rank: Regular

Joined: 10/14/2008
Posts: 67
as i understand it, stability isn't necessarily about how hard a disc fades, although more stable discs do tend to fade more. instead, stability refers to a disc's tendency to want to get down to the ground or stay up in the air. hyzers/anhyzers can be thrown regardless of a disc's stability, however understable discs tend to hang in the air longer and get more d. if you need to throw a big sweeping hyzer, it can be done with an understable disc just as well as it can with a stable one; the understable one willl just go further.
L_Stephens
Posted: Friday, January 08, 2010 9:39:54 PM

Rank: Extreme Veteran

Joined: 7/6/2008
Posts: 437
the discs tendency to want to rise or fall is glide. And yes...just watch Ken Climo throw hyzers with TeeBirds and you will be amazed..but he isn't throwing flat...he is putting the hyzer on the disc at release. On hole #8 at Banklick I throw a Comet on a hyzer and get a much better precentage of deuces than throwing the same hyzer line with anything remotely stable.
woottebs
Posted: Friday, January 08, 2010 9:45:57 PM
Rank: Regular

Joined: 10/14/2008
Posts: 67
glide, speed, turn, and fade are the four categories rated for a disc's flight. how much a disc flips or comes in at the end is turn and fade. stability is something different.
L_Stephens
Posted: Friday, January 08, 2010 9:54:45 PM

Rank: Extreme Veteran

Joined: 7/6/2008
Posts: 437
You are right that an overstable disc does want to dip...aka...find the ground...but all these terms are really bad at describing what is going on.
cyrusf1
Posted: Friday, January 08, 2010 11:20:04 PM

Rank: Veteran

Joined: 8/2/2007
Posts: 199
Location: Hamilton (West)
 As a beginner looking for an ideal disc, you should know that there is no such thing as "stable" as described by Discraft. For example, a Comet is a "Stable Mid-Range Driver". What they mean by, "stable" is that it flies relatively straight, (in beginner terminology) so they refer to a Wasp or Drone as overstable. If you were to ask anyone who throws a Comet, "Is the Comet a stable disc?" they would most likely tell you that it's one of the least stable mid range discs in their bag.

Erik
Posted: Tuesday, January 19, 2010 3:48:24 PM

Rank: Veteran

Joined: 2/17/2009
Posts: 212
Even within the same kind of disc you can classify some as understable/stable/overstable.

I have a DX Ontario Roc which is extremely understable. It turns over for me nearly every time. Where as my Champion San Marino Roc hold a very straight line. Slightly different plastics and molds but they fly completely different.
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