That point he made at the end was really eye opening. There is a big downhill dogleg left at Morley field hole 5. I would always crush my firebird, and would end up left, but well short. It wasn't until I threw my flippy thunderbird on hyzer, that allowed me to carry further straight AND left and park the hole.
Thanks everyone! These Feldberg videos are awesome. Through time I've grown capable of being able to tell how the profile of a disc is going to equate to it's flight pattern. Especially since many discs do not relate to their numbers.
🤯 I experienced this “gliding to the left” with an understable Mamba just yesterday, which I never throw. I usually only throw overstable discs, as I have a RHBH and LHBH, and I was blown away with how much glide and then skip the Mamba did. With RHBH and a soft left to right headwind, I set the shot up to hyzer-flip and stall then drop out of the sky. I picked my line 40 feet to the right of the basket expecting it to be parked. I threw my shot. I hyzer flipped went straight and flat. I hit my line. I thought it would have been a 200ft throw in. I had a smile on my face with ignorant pride, but it did not drop out of the sky line an overstable disc would. It carried, into the now headwind, 35-40 feet past the basket I was shocked. It all makes sense now.
It took me so long to learn this concept, and I STILL make this mistake. So often I find that many of my "bad shots" have to do with poor disc selection more than anything.
Interesting... We've always been told that domey = overstable. Dave seems to suggest here that dome contributes to understable flight paths. Maybe it's that pros like to throw overstable molds, but with dome to get a hair of understability to them...
@tyvek05 Every time a pro talks about his pop top Destroyers or whatever his driver is, he is talking about a meat hook version of that mold. For some reason the flat top Firebirds are more of an exception.
Just gotta release it with enough hyzer. An understable disc wants to rotate some amount to the right. Once the disc burns up this amount of rotation it should continue to hold that angle. So when a disc that rotates 30 degrees to the right is released with a 45 degree hyzer angle, it will still be slightly hyzer for most of the flight and will glide left for the finish.
@@judasblewit If you throw the disc flat, it goes right and stays right, correct? If you throw it on hyzer, it should flip up, go straight, finish left. If you're not used to throwing in hyzer, it's very common to throw high and/or nose up. Try keeping the same flat release arm swing but bend at the waist to achieve an angle.
The top doesnt go up when the disc goes legt or fades and the top doesnt go down when the disc goes right. But I guess the message is sound besides the wrong wording.
Yeah I know this is a common use of the terminology and completely valid if it helps people to describe what they’re throwing but I don’t like it. To me there’s no such thing as a “stable disc” meaning a “stable” disc that stays flat. A disc is more or less stable.A spectrum between extremely overstable and extremely under stable. In the middle is not “stable”. A less stable disc has less resistance to turning over. A more stable disc is more resistant to turning over. There’s no disc that stays flat and hence is “stable” In fact, a disc that flies flat would be on the understable side. A neutral putter flies perfectly flat, but it’s not “stable” it’s understable, as in it will flip over in strong headwind. From a physics standpoint, stability would correlate with rim mass distribution. And a disc that stays fairly flat means that the aerodynamic center of pressure stays very close to the the geometric center of the disc over a wide range of nose angles. An over stable disc means the center of pressure is always forward of the geometric center of the disc, pitching the nose up, and rolling the disc to the right (rhbh) due to gyroscopic precession. (I’m an aerodynamicist who designs aircraft for a living and feldberg is talking out of his butt here) feldberg, stay in your lane buddy.
Apart from the terminology, I'd say he nails the explanation of the outcomes but isn't really accurate on the theory part. Also from what I've understood, the lift is actually caused by lower air pressure on top of the disc rather than gathering "more air" under the dome.
tyvek05 feldberg is an accomplished disc golfer. And he can use any terminology he likes. If you like his terminology that’s ok too. But feldberg has zero knowledge about physics and aerodynamics, and his descriptions about “wind under the disc” are made up nonsense.
I can’t speak to the physics but “straight” is used so often because it’s simpler to understand when asked, “how does that disc fly?” Why would anyone use the term stable instead of straight? Straight is more descriptive, more familiar and easier to visualize. Using stable instead of straight is on its deathbed and has rarely been the way I’ve heard it described among those I interact with in LA or on FB. That being said, this was one of Dave’s best videos. Short, informative and to the point👍🏼
Actually that is not the reason the disc fades. I can explain it but don’t feel like it. Veritasium has a video about spinning objects that explains part of it. I’ll find the name of it. The main way to tell if a disc is overstable is if, looking at the profile of the disc, more air hits the underside of the disc. If the air hits the underside of the disc it will push upwards on the disc and consequently make it fade more. (That is explained in the veritasium video I believe.) Take a disc and spin it on your finger. Push on the bottom with your finger as it spins and it will translate the upward motion 90 degrees away (depending on the direction the spin is going because the spin carries the motion basically.) and push one side down and one side up. (because it is spinning.) If the air goes over the top it pushes down and the downward motion gets translated the same way.
![[Part 1] ทารกน้อยถูกทิ้ง👶 หญิงชราเก็บขวดขายเลี้ยงดูเขาจนโต #โลกการละคร](http://i.ytimg.com/vi/nPTDvFCExks/mqdefault.jpg)
That point he made at the end was really eye opening. There is a big downhill dogleg left at Morley field hole 5. I would always crush my firebird, and would end up left, but well short. It wasn't until I threw my flippy thunderbird on hyzer, that allowed me to carry further straight AND left and park the hole.
Thank you! Finally a video that explains the way discs are designed and why they do what they do!
Well done. More like this please
Great tips Dave !!
Thanks everyone! These Feldberg videos are awesome. Through time I've grown capable of being able to tell how the profile of a disc is going to equate to it's flight pattern. Especially since many discs do not relate to their numbers.
🤯 I experienced this “gliding to the left” with an understable Mamba just yesterday, which I never throw. I usually only throw overstable discs, as I have a RHBH and LHBH, and I was blown away with how much glide and then skip the Mamba did.
With RHBH and a soft left to right headwind, I set the shot up to hyzer-flip and stall then drop out of the sky. I picked my line 40 feet to the right of the basket expecting it to be parked.
I threw my shot. I hyzer flipped went straight and flat. I hit my line. I thought it would have been a 200ft throw in. I had a smile on my face with ignorant pride, but it did not drop out of the sky line an overstable disc would. It carried, into the now headwind, 35-40 feet past the basket I was shocked.
It all makes sense now.
Great explanation! Sooo many people giving advice have this wrong! Thank you for the clarification Dave!
I remember this from the DVD you did with Champ. Great tips.
Thank you. This was a real nice, concise explanation. Well done. More please.
Absolutely great video! Made so much make sense!
One of the best Island greens in disc golf behind Dave.
Outstanding!
Keep it coming!
Thanks man, this is so good!
I don't even want to share Dave's videos...certainly not with my disc golf buddies. Feel like I joined a secret society...thank you Dave!!
Very informative, thank you.
This man is a walking disc golf encyclopedia
keep dropping these knowledge bombs on these children who think they know everything and say your opinion doesn't matter after you hit 40.
Thanks for sharing!
It took me so long to learn this concept, and I STILL make this mistake. So often I find that many of my "bad shots" have to do with poor disc selection more than anything.
Yes!! Thanks Dave!!!!!
Longtime fans of Feldberg like me know that this man some way or another mentions Ken Climo every time you put a camera on him.
Interesting... We've always been told that domey = overstable. Dave seems to suggest here that dome contributes to understable flight paths. Maybe it's that pros like to throw overstable molds, but with dome to get a hair of understability to them...
@tyvek05 Every time a pro talks about his pop top Destroyers or whatever his driver is, he is talking about a meat hook version of that mold.
For some reason the flat top Firebirds are more of an exception.
I really need to learn the understable long left finish. If I try I snap it and it flies right.
Just gotta release it with enough hyzer. An understable disc wants to rotate some amount to the right. Once the disc burns up this amount of rotation it should continue to hold that angle. So when a disc that rotates 30 degrees to the right is released with a 45 degree hyzer angle, it will still be slightly hyzer for most of the flight and will glide left for the finish.
@@grantmericle4514 ok. I tried yesterday and it's stalling out. Does that mean I'm throwing nose up?
@@judasblewit If you throw the disc flat, it goes right and stays right, correct? If you throw it on hyzer, it should flip up, go straight, finish left. If you're not used to throwing in hyzer, it's very common to throw high and/or nose up. Try keeping the same flat release arm swing but bend at the waist to achieve an angle.
@@grantmericle4514 ok I'll try again today! Thank you.
Dang always thought stable meant over stable. Thanks
DF vs KC match?
The top doesnt go up when the disc goes legt or fades and the top doesnt go down when the disc goes right.
But I guess the message is sound besides the wrong wording.
Yes, it does.
The stable portion of the flight is when the disc is going straight.
Yeah I know this is a common use of the terminology and completely valid if it helps people to describe what they’re throwing but I don’t like it. To me there’s no such thing as a “stable disc” meaning a “stable” disc that stays flat. A disc is more or less stable.A spectrum between extremely overstable and extremely under stable. In the middle is not “stable”. A less stable disc has less resistance to turning over. A more stable disc is more resistant to turning over. There’s no disc that stays flat and hence is “stable” In fact, a disc that flies flat would be on the understable side. A neutral putter flies perfectly flat, but it’s not “stable” it’s understable, as in it will flip over in strong headwind. From a physics standpoint, stability would correlate with rim mass distribution. And a disc that stays fairly flat means that the aerodynamic center of pressure stays very close to the the geometric center of the disc over a wide range of nose angles. An over stable disc means the center of pressure is always forward of the geometric center of the disc, pitching the nose up, and rolling the disc to the right (rhbh) due to gyroscopic precession. (I’m an aerodynamicist who designs aircraft for a living and feldberg is talking out of his butt here) feldberg, stay in your lane buddy.
Apart from the terminology, I'd say he nails the explanation of the outcomes but isn't really accurate on the theory part.
Also from what I've understood, the lift is actually caused by lower air pressure on top of the disc rather than gathering "more air" under the dome.
tyvek05 feldberg is an accomplished disc golfer. And he can use any terminology he likes. If you like his terminology that’s ok too. But feldberg has zero knowledge about physics and aerodynamics, and his descriptions about “wind under the disc” are made up nonsense.
I can’t speak to the physics but “straight” is used so often because it’s simpler to understand when asked, “how does that disc fly?” Why would anyone use the term stable instead of straight? Straight is more descriptive, more familiar and easier to visualize. Using stable instead of straight is on its deathbed and has rarely been the way I’ve heard it described among those I interact with in LA or on FB. That being said, this was one of Dave’s best videos. Short, informative and to the point👍🏼
Dave you've been wearing the same shirt for years come on infinite discs.
Actually that is not the reason the disc fades. I can explain it but don’t feel like it. Veritasium has a video about spinning objects that explains part of it. I’ll find the name of it. The main way to tell if a disc is overstable is if, looking at the profile of the disc, more air hits the underside of the disc. If the air hits the underside of the disc it will push upwards on the disc and consequently make it fade more. (That is explained in the veritasium video I believe.) Take a disc and spin it on your finger. Push on the bottom with your finger as it spins and it will translate the upward motion 90 degrees away (depending on the direction the spin is going because the spin carries the motion basically.) and push one side down and one side up. (because it is spinning.) If the air goes over the top it pushes down and the downward motion gets translated the same way.
Veritasium has quite a few science videos about spin but the one I think I remember is “the bizarre behavior of rotating bodies, explained”
I’m not quite sure if air actually should get trapped under a disc, or if the rim shape can change how much air gets trapped