"The Anode is our new beadless putter. It has less fade on putts, yet is stable enough for long straight drives. It is also great for holding long smooth anhyzer lines. The Anode is a straight flyer, making it a great compliment to the stable Ion."
zj1002 said:
kern9787 said:
...Eagle + gyro = a disc for closet teebird fans...All its going to do is make the disc straighter. You lose what makes the eagle an eagle.
throwing the disc straight makes it straighter
The language that MVP uses to describe this disc (and other discs) is one of the root causes of all this misunderstanding. Two things:
1) "Stable" means that the disc holds the right/left tilt angle* through its flight, without tilting further or less (in either direction). Over-stable means that the disc increases its hyzer angle during flight. Under-stable means the the disc decreases its hyzer angle during flight. The most stable disc in the world is the one that holds its hyzer angle, without any change, all the way to the ground (unless the disc stall-fades**). A Buzzz is therefore much more stable than a PD2, Predator, XXX, or Ape. A Buzzz is also much more stable than a Stratus, Sidewinder, etc.. A disc changes stability through flight, according to its air speed and angle of attack***. Blake's flight chart uses high speed stability (HSS) and low speed stability (LSS) to capture the change in stability of the disc as it flies. He doesn't use the change in hyzer angle per second, but uses a subjective relative scale (higher numbers for over-stable behavior, lower numbers for under-stable behavior). Learn to use it, but be aware of the pitfalls of language, and always remember that "most stable" implies Buzzz-like qualities.
2) "Gyro" is not as big a deal as people think, and the way people cast it in some discussions surrounding MVP discs makes it sound like a cheap gimmick. Gyro refers to the gyroscopic stability of an object, what is called angular momentum...this is the product of the spin rate and the moment of inertia. The spin rate is given to the disc at release by the thrower. On the other hand, the moment of inertia is a property of the disc, particularly its shape and how mass is distributed within its volume. The moment of inertia of a disc can only be improved by a few tens of percent, at most, with the most gyroscopically stable form being a weightless flight plate with all the disc mass in the outer-most rim. The Aerobie Ring has a higher moment of inertia than any other possible form of disc of the same outer radius. Increasing the moment of inertia by putting more dense plastic in the rim makes discs thrown with the same spin rate change their hyzer angle of order 10% slower than conventional discs that have equal density plastic (and mass) in the flight plate and rim. The thrower could achieve the same effect with a conventional disc by simply spinning it just a hair faster (so that the product of spin rate and moment of inertia stays the same). In order for the MVP gyro effect to work like envisioned, you also need to assume that a disc with a larger moment of inertia can be thrown with the same spin rate as a disc with smaller moment of inertia...this is probably only partly true, at best. The claim that MVP Gyro will transform an Eagle into a Teebird...that is simply way beyond credibility.
*I simply call this the "hyzer angle." Positive values for hyzer, negative values for anhyzer.
**A stall-fade occurs when the disc is flying nose up and ascending, because it can't continue to climb, it begins to stall out, and will always stall in the hyzer direction.
***The angle which the disc makes relative to the free air stream around it. In still air, a disc tilted up 5 degrees that is flying on a 3 degree upward trajectory has a 2 degree angle of attack.
