Why does "beat in" = less stable.

[tripp]

What about aerodynamics makes a beat in disc less stable?

 

[mashnut]

A lot of it has to do with the nose getting bent down from impacts, effectively lowering the plh.

 

[John Hansen]

A lot of it has to do with the nose getting bent down from impacts, effectively lowering the plh.

PLH? .... Peace, love and happiness?

 

[craftsman]

Lol....parting line height; a trait one can use to compare two of tge same disc without ever throwing them.

Id also add how the stratches add friction.

 

[jenb]

Their brains get all scrambled and they flip out.

 

[ViolaBouquet]

The nicks in the plastic create more turbulence, and cut through the wind less.

 

[tripp]

The nicks in the plastic create more turbulence, and cut through the wind less.

I see how that might make it slower but less stable?

 

[jenb]

Nicks in the plastic actually make discs fly farther. It's counterintuitive, but the smooth surface results in more drag. That's why golf balls have dimples. They fly farther with dimples than without.

The leading theory is that the nose or plh or whatever get lowered. It's also been noticed that you can tune discs with your hands to make them flipper by folding them to stretch the plastic, and change the shape.

 

[BionicRib]

A lot of it has to do with the nose getting bent down from impacts, effectively lowering the plh.

^This..........Parting Line Height

 

[BrotherDave]

Plus losing flashing helps, I guess b/c there is less drag.

 

[mashnut]

Similarly, if a bead gets worn down it can contribute to losing stability.

 

[BogeyNoMore]

What about aerodynamics makes a beat in disc less stable?

It's simple human nature. Lemme slam you into a dozen trees a week for a couple of years... bet you'd be a bit less stable than you were before!

 

[Cworld]

I see how that might make it slower but less stable?

Put the same throw on 2 discs of the same mold. Both have equal speed and spin out of your hand;the disc with more dings/drag will translate that into more understability. Same reason headwinds turn discs over - your dragging through more air particles/unit of time.

Or I'm completely wrong.

 

[bodomdethllica]

^^that kind of makes sense. Maybe the "stiffness" of a newer disc will keep the integrity of the, for lack of a better word, "original" flight. So the fact of beating in the disc makes it less...brittle? Which could change flight pattern...I'm sure somebody may be able to word what I'm saying into an intelligent sounding statement. Hopefully u understand the gist of what I'm saying

 

[BogeyNoMore]

^^that kind of makes sense. Maybe the "stiffness" of a newer disc will keep the integrity of the, for lack of a better word, "original" flight. So the fact of beating in the disc makes it less...brittle? Which could change flight pattern...I'm sure somebody may be able to word what I'm saying into an intelligent sounding statement. Hopefully u understand the gist of what I'm saying

It's mosty due to all the irregularities in the surface. As JenB said, thaey act similarly to dimples on a golf ball. I think they also alter the spin to spin ratio, which affects how a disc behaves in terms of stability.

 

[Schvanz42]

Dimples on a golf ball reduce the surface area of the ball affected by wind resistance. Think of it this way, as the ball or disc is spinning it is disrupting the air surrounding the ball or disc, cutting through the air with the entirety of its surface and creates drag along it entire surface as well. Now let's say for the sake of argument that a golf disc has a circumferance of 20" (I have no idea what it really is and I'm not going to measure) when that disc leaves your hand and begins rotating and cutting through the air it is creating drag along the entirety of the wing. Now when a disc is "broken in" it will typically have quite a few dings and nicks along its wing let's say for example there are four 1/4" nicks in the side of the disc. We have reduced the drag on our disc by one full inch which will allow the disc to spin faster for a longer period of time thus prolonging the hss phase of flight which in turn makes the disc more understable. Dimples and nicks reduce surface area which reduces drag. Make sense?

 

[tampora]

In thinking about the magnus force (a.k.a. the force that makes a curveball curve), the disfigurement of a disc should lead to an increase in understability.

The force that pushes a disc sideways due to it's spin is directly proportional to the cross-sectional area of the disc. Any bends, scrapes, or dings would increase the surface area, and consequently increase the magnus force as well.

In my envisioning of the phenomenon, I see it like this: consider the far left and right edges of a spinning disc in flight. For a right handed person, the left side spins against the oncoming air, while the right side is retreating from it. The pocket of air that encounters the left side gets disrupted when the disc travels through it due to friction between the disc and air. Similarly, the pocket of air on the right side does as well, but not as severely because that side of the disc is spinning away from the oncoming air.

The air that gets disturbed on either side can only get pushed out away from the disc. Since the left half pushes air away more, the unbalance results in a net force to the right due to the conservation of momentum. If you were to increase the surface area of the disc, this net force would also increase.

 

[sillybizz]

Prerubed

 

[BIGHAFNER]

The air catches the nicks and gouges in the plastic creating more drag. The greater the drag, the greater the understability.

PLH probably has a part in it too, but I don't know.

 

[tampora]

The air catches the nicks and gouges in the plastic creating more drag. The greater the drag, the greater the understability.

The above is a hand waving argument. "It happens because it happens". This solution does not address why it is understability that is caused and not overstability.