@@dynamicdiscs not necessary to know, his initial question was what initial velocity initiates a HST correlated to disc speed....this answers more of how Tomas speed rates the discs. Did he have them all the same plastic and weight? Idk
I think "stuff made here" has the most viable candidate for a tunable disc launcher that can control disc speed and spin. Then the rig itself could just be manipulated to change release angle. I dont think i can link it here, but if you search "stuff made here" he has a series about trying to build a bionic disc throwing machine. The most recent video (i believe) is my bet for the best way to truly analyze disc performance without any human variables.
@@dynamicdiscs 330 is a handy distance in NZ (and my max)... it's 100m and almost all our playing fields (and NZ has a LOT... 1 every couple of K's in Wellington) are 100m long... (I'm also lucky to have a field nearby (Rongotai) that is 160m x 180m with permanent AstroTurf cricket pitches in the middle giving a tee with a 116m distant wall and no rough to loose your discs... (Ans is where I threw a disc from the far end of the turf 105m according to Google maps measure... and where I learned to catch drivers at about 90m (course I used to throw/catch frisbees for fun at lunch during work back in 2k so catching wasn't a prob (bad straight arm habits were... but gave me a great 'face the target and yeet out wide' upshot... great for bullseye'n peoples bags.
Some that gets rated turn are really just anyhyzer released. Plus spin at low speeds will be a big factor as it is a bit easier to get proportionally more spin at slower releases. But anyway this type of work really familiarizes you with your bag!
I definitely noticed I released some with anhyzer, but even with an anhyzer release, I tried to rate them as "turn" if they rolled to a sharper anhyzer angle after they left my hand. But that part is subjective so I can definitely see how some people could interpret it differently.
Turn is turn. If a hyzer goes to flat it turned. If flat goes to anhyzer, that is turn. If a slight anhyzer goes to more anhyzer that is turn. Look again at the video. It is obvious, no turn vs turn.
@@michaelcushman I've always found that a disc seems to have an easier time "turning" from flat or anhyzer than it does from hyzer. I think to truly test this, throwing a hyzer flip with each and seeing if they move to the right at all would be the best gauge if they're understable or not.
The arm speed is like horsepower (linear force), and, the rotation/spin of the disc is like torque (rotational force). I'd like to see a spin velocity in RPM, or, something. The faster an object spins, the lighter it is in our atmosphere, so, it really is the bigger part of achieving max distance.
I found this to be insightful. Nose down and low 50s mph can turn any disc with some turn, 1 and above. Many comments are about spin speed, but that isn't as relevant on turn as people think. The air forces increase on one side of the disc, but the additional rotational force fights the turn. Others think Danny is confusing an anhyzer release with a turn. Turn is turn. If it is released with a little anhyzer and it goes even more anhyzer, it turned. Yes a robot, indoors, with different air densities, angles, plastics, etc. Would be better. Go for it! (It is surprising the PDGA or disc manufacturers haven't done this, that we know of.)
i love this video (i was literally walking around my apartment today practicing a loose arm/throw and thinking about how arm speed would affect my throw). but i wish you could've done this at like an indoor football field or something. i'd imagine that (as you mentioned) the occasional gust of crosswind played a huge part in your results. that and/or some kind of measurement on RPM for each disc would've been so fascinating to see, especially the correlation between arm speed, RPM, and the final result. like drawing a marker line from the center of the disc out, slow-mo record from the top and calculate it that way? idk, i'm thinking too hard about it haha. either way awesome content as always, danny! thanks for your time and hard work!
That's a good point, but considering it was crosswind rather than head or tail I think it might have just made the results more clear. Like if it didn't flip, it would get blown more to the left. In the past I've measured RPMs for Physics of Flight and from that I can say that the biggest effect they have is just causing a later fade. They don't tend to change the high speed stability that much.
@@dynamicdiscs very true, i'm not a physics or disc expert so i'll take your word for it! but the mental image of seeing this same video in an indoor facility sounds sick. lol thanks for the reply!
I just had a revelation hearing your comment about nose angle. I spun it on my finger like you did (pressing up and down on the nose) and wow, the disc's reaction blew my mind! For some reason I had never thought about that relationship between attack angle and turn. Amazing! Thanks Danny! I'm always learning something new from watching these series! Keep it up :D
Loved this video and the thinking behind it, Danny. Thanks for nerding out on our behalf! Would love to see this experiment conducted again with a bigger data set that includes multiple throws from several different people throwing, a measure of spin velocity, and a post-production analysis of each release, instead of anecdotal impressions while throwing. Another level of research could be looking for patterns in the plastics and cross-section/airfoil/dome/wing shape, etc. Whatever we call it. :D And hope you've had fun painting! ;)
I'm 60 years old with bad knees and hips, so all my throws are stand still. My max distance is between 250 and 280 feet, but I get turnover with my Thrasher (Speed 12) and even with my beat-in Trespass (Speed 12) if I keep the nose angle down. If I go even slightly nose up, nothing but hyzer and 100 feet of lost distance. I agree completely with nose down contributing the most to getting turn. Thanks for the experiment Danny!
What about the rpm’s of the disc? I imagine this is much harder to test but the gyroscope stability and aerodynamics of a disc likely change the faster it rotates (think speed differential from different sides of the disc)
Absolutely spin is why a poor forehand will wobble and get turbulence that create unpredictable flight. Once I learned to grip the disc and get the spin, did I learn to throw putters and understable discs with my forehand. My take away from this is throw your discs to learn what they do when you throw it at different power. Naturally the most touchy angle is throwing flat. I would say from there how hard to hyzerflip it. And if it hyzerflipa then anhyzer is most likely a roller.
Air density makes a significant difference. Elevation, temperature, and humidity will affect turn. What were the conditions and note them for the test? At 4500' I throw much lighter, 150g and less, discs to get turn and distance. I have a 172g 9 6 -3 1 disc in a high grade plastic that won't turn at all on a 300' throw (55mph flex) but have seen the same disc thrown in low elevation crash right on a 250' throw. Great video, shows how sensitive turn is.
Love the experiment! It would be helpful to have other data such as angle of release, wind speed/direction, etc. From the video it seems as if the amount the disc turned over was based off of other factors than just speed
I enjoyed the video. The big take home for me is that throwing nose down is key. I still struggle with that. It is the biggest factor for me with regard to distance. If I throw nose down, it goes far. If I screw up and release with a little nose up, it doesn't go nearly as far. I've only broken 300' a few times so I'm still on the quest for better, more consistent, ideally "effortless", distance.
interesting video. Elevation is for sure worth noting as well. As someone who used to live at 5k and now see level I had to rework my bag a ton. But also I feel like a lot that angle of release wasnt super consistant here, which is really hard to do obviously. But I felt like a lot that turned over were release with a slight anhyzer? or was that just me seeing things?
If you'd quit rotating your shoulders flat you'd be a lot more consistent in your angles. A flat swing plane does not exist. Everything is a little hyzer or anyhyzer angle. Even for a flat shot there should be a slight angle to your torso. It is a lot easier to have gravity help accelerate the transition as well as releasing the arm/disc unit, which you can't really do well if your shoulders are flat and you're trying to throw flat. It's inefficient and is why some discs turned and some discs didn't.
I would like to see a video of disk speed/distance ratios. For example a 12 speed disk thrown@ 55mph. Should go how far. As for a disk throwing robot, I think the best approach would be to modify the arm of a skeet throwing machine to throw a disk.
More speed = more turn but at the same time More spin = more stability in flight = less turn but also less fade when it slows down So it is the balance between these two factors which you need to get just right for the desired result. (assuming a nosedown flat throw with no wind)
As far as my high school physics go, a higher spin rate should reduce turn rather than increase it. There is an argument for higher spin generating lift on the left side of the disc -> turn, but the gyroscopic effect should be more impactful and reduce the turn. I also believe this is why discs act more understable when thrown with forehand since most people generate way less spin with forehands with comparable throwing speeds.
@@TheDrakmannen My tests on Physics of Flight would back you up. I think the lift on the left side doesn't play as much of a part as you'd think because if it did lift the left side, the front would actually lift because of gyroscopic precession. More spin means less turn and less fade, but I think it's minimal when compared to armspeed.
@@dannybigflix9125 Yea, didnt even think about that, but that makes total sense! Im guessing this must be why the disc fades at the end aswell, nose wants to go down so the disc girates left (RHBH)
I think it’s more about the rate of spin, relative to the speed. I’m sure there’s a window where that rate changes the flight significantly but in general, a slower speed with a high rate of spin should fly well for a short period of time. Same as a fast arm speed with a bad grip and no “ snap” will have it dump out early.
From my testing in the past, faster spin rate slightly reduces turn and delays fade because it increases gyroscopic stability. But the difference in total distance is negligible and the change in turn isn't noticeable for most shots. I don't think it has that big of an effect.
@@dynamicdiscs it might seem to make discs more understable since the fade is in fact later in the flight but I don’t believe you increase the amount of turn with more spin. More likely only make the disc ride that turn angle for a longer time, meaning a longer potential drift to the right
Many of these, at least to my eye from the fixed camera and not exerting standpoint here in my gaming chair, don't seem like they turned. Some seemed to sort of stall and not begin fading, or simply go mostly straight. The raider throw around 5:30 stands out as one of these. Many of the others rated as "turn" also are just anhyzer shots that are following the angle. I've always seemed to find that a disc resists turning a little more from hyzer to flat than it does from flat (or anhyzer) to anhyzer. I don't know why this is. But, I think a better angle (no pun intended) would be to throw them all on hyzer flip (more consistent release) lines to see which actually get up and move to the right.
I have been wanting videos to be done with a speed gun. The future is a lot more people buying disks based on their arm speed and what the disk does at that arm speed. The descriptions of novice advanced etc. will probably take backseat to arm speeds and the reaction of a particular disc with that particular arm speed.
Maybe I’m misunderstanding things, but I would think that disc rotation speed would have a greater impact on the disc turning than just arm speed. You are right that a disc throwing robot would help 😂 Maybe Bobby can help get that approved
In the testing I've done more rotation only causes the discs to fade later, it doesn't change the high speed stability much. But it could definitely be something to look more into in the future!
@@dynamicdiscs As far as my high school physics goes, higher spin should like you say make the disc fade later, aswell as turn less. Thats why discs act more understable when thrown with a forehand since most people get less spin with forehands than they do with backhands. A contributing factor to this that headwind make discs understable. Your spin rate isnt affected but your discs airspeed is, making it turn more than usual. Thats what I believe happens anyways, please correct me if Im wrong ^^
@@TheDrakmannen I feel like my discs started to feel considerably more Stable, the more clean I’ve become with my release. I’ve wondered if this is because I’m getting more spin for the arm speed. 🤷🏻♂️ It’s an interesting thing to ponder. There are many variables no doubt, but I do know that a year ago, I had a ballista and a destroyer that I could turn over (albeit not getting wonderful distance from them). And now, they both fly flatter but further. My theory was that the extra spin was fighting off the turn, and that’s maybe why the top pros have to hyzerflip a bunch of their discs (even ballista pros, destroyers, and nukes)…they can launch discs faster than 70mph, and it’s hard to get enough spin to fight off turn at that airspeed. We need the robot to test this, but my theory was always that higher airspeed leads to turning, lower airspeed leads to fading, but spin fights them both. I always go back to Simon Lizotte at Waco, throwing a putter 492’ over the water on hole 18, laser-beam straight all the way. That had to have been unbelievable spin. I have to hyzerflip a 2-speed putter to get 270 out of one without it turning over too far.
@@JimWhitakerMusic wobble also makes discs understable(off axis torque) so the cleaner the release the more stable a disc flies. Also yes, pretty much any disc will flip a little if you put enough air speed to it. It has to be a ratio of air speed vs rpm or something similar since spin direction clearly is important:D Still havent been able to figure out if its the magnus effect alone or a combination of magnus and gyroscopic effects that cause the initial turn in a disc.
Hi Danny, I'm doing doing research for my Bachelor's dissertation concerning CFD simulation of disc golf discs. I absolutely love the content you're making and I think it's the best there is so far. I'd like to get in touch with you, I have so many question. Who knows, I might even by able to provide some answers :)
Thanks again Danny. I can see the differences in the discs even though there's imperfection (not a robot lol). I'd love to see more of this in calm conditions to at least eliminate that as a variable. Maybe we could see more subtleties?? Can wait to see the video once someone sends you a robot!! Thanks again for sharing these incredible insights.
Thank you for another interesting video! It would also be very interesting to measure what speed that is required for those discs to hit the line you aim when thrown flat. I.e what speed is required for turn= fade.
A few notes on your experiment: 1. Your follow through arm is setting off the speed gun (probably where those 56mph is coming from) 2. You should get several factory new discs in each mold instead of discs from your bag 3. You should release each disc on the same angle 4. You should measure distance of each throw for real world application. 5. A disc throwing robot would be amazing for this
Wouldn’t a disc released on an anhyzer angle be more likely to turn at a lower speed? Similarly to how nose down creates more turn at a lower speed, having the right side of the disc be lower and “showing more” to the frontal force should lower the mph necessary to creature turn, right? (Not a physics major, so would love to hear from someone who knows more than I do)
Another factor is spin rate on disc. In baseball they have a camera that measure spin rate of the pitches. And that even though they throw slower they have a higher spin rate. Look into it.
I know this is an old post, but according to this data you would have to be able to throw almost 310 feet just to get a number 4 midrange to behave the way it was designed to. (7.2 x 43 =309.6). Hmmm - that might explain a lot.
This is a great idea love all the work you do opens up my mind to new things like wondering if you are putting more spin or less spin on some of the one that turned over of the same MPH so do you think that spinning the disc more would turn it over thrown at a lower speed (honestly trying to think how anyone could effectively determine spin every shot they throw)
So from my understanding what I see here as everywhere . There are a lot of variability from the throw than the disc. People want there disc to do the job when to me it is you that have a bigger impact so less disc more accuracy practice. You are the player not the disc thx for all those good video 👍
Weight was close to max weight for everything. The difference in weight is usually just release velocity so if a disc was lighter, it would be thrown harder and easier to turn. So the end result was controlled for by measuring the speed. Plastics were mostly Lucid apart from the Truth being Fuzion and the Mavericks being Lucid-X!
TORQUE makes a difference..I throw a bounty and it will land about 250ft (short hole) give or take 10ft consistently.....But when the basket shifts to the right (same distance) I don't aim different....I just torque it more (wrist snap) and I'm always on point.
should the manufacturer have some kind of idea how fast a disc should be thrown for a particular disc speed rating? like a 12 speed should be thrown at 60 mph while a 6 speed should be 30 mph to achieve the give flight rating for each disc.
The disc weights need to be factored also. The light the disc the easier it is for me to turn it over so that will also come into play. Also release is a big factor.
You are forgetting the roation on disc. This is very important. You will almost evertime get more turn on backhand versus forehand due to faster rotation on backhand.
I'd like to see this, but with how much different weights affect the likelihood of it turning over. Bought a 110 gram Valkyrie and it's unthrowable. It practically cork-screws right out of the hand.
Different weights is a consideration. From the testing I've done in the past for different weight discs, pretty much the only result is a faster release velocity which can cause them to fly less stable, but probably not actually change the stability if they were thrown at the same speed.
@@dynamicdiscs discs turn due to lift generation. A light disc has the same aerodynamics as a heavy disc so it generates the same lift but has less weight and rotational inertia to counteract that lift so they flip more Besides the slightly faster release
@@dynamicdiscs At the same velocity, lighter discs will definitely turn more. They have less inertia since they're lighter so the force of the air effects the disc more.
I'm sure beginners don't get as much spin on a disc as you do. Can you do a few where you try to throw a 7 speed the same speed that it turned over in this video but with less spin? I'd like to see if it turns over.
Usually like your videos but this one doesn't feel too scientific. From what I see here the ones you released with more anny are the ones that are deemed to turn but with a right to left wind I think the angle is more the reason than the speed.
Dude really needs to consult with someone with an engineering degree and a background in experimental design. These videos have such a painful tone of "I'm confused by my data and don't know what I'm talking about."
Different plastics should have different ratings! I have about a 10 speed arm and throw mostly 13 speed GStar Katana and Fuzien Sheriff, but not into the wind because they're too flippy.
You say armspeed, but is it disc speed that you're measuring? Are they the same speed? It would be cool to see the difference between arm/wrist speed vs. Disc speed if there is a difference.
The only thing that accelerates the disc is the body movement. So at the point of release the speed of the disc is the same as the part of the body it was attached to. Important thing to note is that ground speed is measured by the radar, and the disc flies according to its air speed. E.g. an arm speed of 40mph into a 10mph headwind, will result in the same flight behaviour, as a 50mph throw into a calm wind.
You are correct, arm speed and disc speed are not equal because devises dont capture the final wrist snap, and any acceleration that comes from the final pivot of the disc or any other counter force that snaps the whip.
I presumed there would be a robot golf disc thrower (i.e. a machine), similar to the machines that throw baseballs at batters, that would spit out discs exactly the same every time, depending on the adjustments. Are you saying there is no golf disc throwing machine? Or just that you don't have one? Or it's just not as much fun and throwing them yourself. ;-)
My proto Sheriff turns a ton at 60+, 200ft spike anhyzer at my top speed. My metal flake Sheriff will only turn at my top speed, holds a great sharp line. My chameleon moonshine Sheriff's have no turn thus far. LHFH flat release/baby anhyzer at most.
I don't think I understand the turn. I'm still relatively new to disc golf. Some of the discs throw looked to be super straight but Danny said they turned. What am I not seeing? Or what should I be looking for?
That's understandable. I should have been more clear while describing it at the beginning. I'm referring to turn as a change in angle of the disc as it flies, not necessarily a curve to the right. Usually a change in angle will make the disc curve to the right, but maybe not in a crosswind.
Yeah usually fan grips are a little more nose up which gives control, but not as much distance so it's perfect for approach shots. But I used a power grip to try and get the nose down for these throws.
Also depending on how much disc speed you put on the disc. I imagine it would be good to test this to improve your game but it does little for the general public. Everyone will have different disc RPM's
I dunno if anyone seen the Simon video where he and another local pro threw the same speed, but his went farther because he gets better spin on the disc. Probably a big part of this result is everyone gets different spin.
I watched that video and the other person is Raivis Markons-Craig, and he was throwing with a bit of an air bounce, which slowed the disc down. It wasn't so much an issue of spin rate as it was the nose angle of the disc on release. 🙂
Some of the ones he "turns" are just released with some anhyzer. Throwing them with a baby hyper and flipping that I would say would be "turned." Pretty dumb video, but throwing flap is hard. Just work on your angles I guess
This is a good concept and good effort but the wind, the consistency of angle (some of those were anny), the consistency of the radar, the humidity, the temperature, the spin, the elevation... SO MANY things that affect flights are out of your control. Your conclusion that it's all about nose angle doesn't really apply to people who throw with a good nose angle and a run up... so I don't know if this information helps with anyone's game. It is entertaining to watch, and what I think it teaches is that it's important to get out and do field work to build an intuitive feel for your discs and your swing.
@@jahkyleezy1315 true but the difference would be higher release velocity. Which I was measuring. Heavier discs and lighter discs thrown at the same speed will fly more or less the same.
One thing that I don't think you're accurately explaining is that a disc with 13 speed and -1 turn is meant to turn when it's thrown at the speed that the disc is meant to be thrown at. So if you're getting -1 turn on a 13 speed disc, you would say that would be the speed in which the disc is meant to be thrown. You would want to find the speed for each disc in which the flight reflects accurately. You aren't throwing a 13 speed disc and turning it over, you are throwing it at the speed it was designed to be thrown. If you have a 13 speed disc with 0 turn and 2 fade, you could test out the speed in which it turns to find it's breaking point where you find it to become understable.
How are you getting 300ft out of a 9 speed driver at such a low arm speed? Im new, and ive been flinging the piss out of my Valkyrie, and not hitting 200ft. Its gotta be the nose down thing.
Rotation is not 100% correlated to arm speed ? Would thought the snap you get at grip lock creates more rotation than when it is released early ?? But i am no expert at all.
This has been a pretty common comment so I definitely should have clarified. "Turn" as I was using it is a change in the left to right angle of the disc, or "roll" technically. The curve that the disc flew on is what some people will refer to as "turn" though so I can see I should have been more specific.
Nice experiment, but how far did the fly? The turn is important but also the distance would be nice to correlate.
Good point I was going to include that but forgot! The shortest Bounties were around 200' and the fastest went around 330'.
@@dynamicdiscs not necessary to know, his initial question was what initial velocity initiates a HST correlated to disc speed....this answers more of how Tomas speed rates the discs. Did he have them all the same plastic and weight? Idk
I think "stuff made here" has the most viable candidate for a tunable disc launcher that can control disc speed and spin. Then the rig itself could just be manipulated to change release angle.
I dont think i can link it here, but if you search "stuff made here" he has a series about trying to build a bionic disc throwing machine. The most recent video (i believe) is my bet for the best way to truly analyze disc performance without any human variables.
@@dynamicdiscs 330 is a handy distance in NZ (and my max)... it's 100m and almost all our playing fields (and NZ has a LOT... 1 every couple of K's in Wellington) are 100m long...
(I'm also lucky to have a field nearby (Rongotai) that is 160m x 180m with permanent AstroTurf cricket pitches in the middle giving a tee with a 116m distant wall and no rough to loose your discs... (Ans is where I threw a disc from the far end of the turf 105m according to Google maps measure... and where I learned to catch drivers at about 90m (course I used to throw/catch frisbees for fun at lunch during work back in 2k so catching wasn't a prob (bad straight arm habits were... but gave me a great 'face the target and yeet out wide' upshot... great for bullseye'n peoples bags.
Talk to Mark Rober to build a disc slinger which controls speed and angles!!
Or get Simon Lizotte because he’s crazy good at controlling his speed and angles
Oh my gosh that would be a dream video!
Or "Stuff Made Here"
And spin rates!!!! I think the amount of spin you put on a disc matters more than people realize. I need a machine to prove that!
@@hauzio yes!!! Stuff made here!
“It only went 320ft” 😂… I think most players can’t even throw that far! 😝
Great idea for a video and interesting results! Thanks for sharing Danny 👍
Throws anny...yeah, that turned ;-)
I didn't want to say it.
Some that gets rated turn are really just anyhyzer released. Plus spin at low speeds will be a big factor as it is a bit easier to get proportionally more spin at slower releases. But anyway this type of work really familiarizes you with your bag!
Yeah I think his form has a natural anhyzer so i wouldn't recommend using this info for your own game unless you have form like Danny
I definitely noticed I released some with anhyzer, but even with an anhyzer release, I tried to rate them as "turn" if they rolled to a sharper anhyzer angle after they left my hand. But that part is subjective so I can definitely see how some people could interpret it differently.
Turn is turn. If a hyzer goes to flat it turned. If flat goes to anhyzer, that is turn. If a slight anhyzer goes to more anhyzer that is turn. Look again at the video. It is obvious, no turn vs turn.
@@michaelcushman I've always found that a disc seems to have an easier time "turning" from flat or anhyzer than it does from hyzer. I think to truly test this, throwing a hyzer flip with each and seeing if they move to the right at all would be the best gauge if they're understable or not.
@@kyleweir689 that could depend on your form.
I Prefer throwing hyzerflip for distance as I generate more power. My anhyzer is weaker so less flippy.
Just here to say I enjoy your rambling and throwing of discs.
The arm speed is like horsepower (linear force), and, the rotation/spin of the disc is like torque (rotational force). I'd like to see a spin velocity in RPM, or, something. The faster an object spins, the lighter it is in our atmosphere, so, it really is the bigger part of achieving max distance.
I found this to be insightful. Nose down and low 50s mph can turn any disc with some turn, 1 and above.
Many comments are about spin speed, but that isn't as relevant on turn as people think. The air forces increase on one side of the disc, but the additional rotational force fights the turn.
Others think Danny is confusing an anhyzer release with a turn. Turn is turn. If it is released with a little anhyzer and it goes even more anhyzer, it turned.
Yes a robot, indoors, with different air densities, angles, plastics, etc. Would be better. Go for it! (It is surprising the PDGA or disc manufacturers haven't done this, that we know of.)
At last you have disc numbers there. Thank you!
i love this video (i was literally walking around my apartment today practicing a loose arm/throw and thinking about how arm speed would affect my throw). but i wish you could've done this at like an indoor football field or something. i'd imagine that (as you mentioned) the occasional gust of crosswind played a huge part in your results. that and/or some kind of measurement on RPM for each disc would've been so fascinating to see, especially the correlation between arm speed, RPM, and the final result. like drawing a marker line from the center of the disc out, slow-mo record from the top and calculate it that way? idk, i'm thinking too hard about it haha. either way awesome content as always, danny! thanks for your time and hard work!
That's a good point, but considering it was crosswind rather than head or tail I think it might have just made the results more clear. Like if it didn't flip, it would get blown more to the left. In the past I've measured RPMs for Physics of Flight and from that I can say that the biggest effect they have is just causing a later fade. They don't tend to change the high speed stability that much.
@@dynamicdiscs very true, i'm not a physics or disc expert so i'll take your word for it! but the mental image of seeing this same video in an indoor facility sounds sick. lol
thanks for the reply!
I just had a revelation hearing your comment about nose angle. I spun it on my finger like you did (pressing up and down on the nose) and wow, the disc's reaction blew my mind! For some reason I had never thought about that relationship between attack angle and turn. Amazing!
Thanks Danny! I'm always learning something new from watching these series! Keep it up :D
Loved this video and the thinking behind it, Danny. Thanks for nerding out on our behalf!
Would love to see this experiment conducted again with a bigger data set that includes multiple throws from several different people throwing, a measure of spin velocity, and a post-production analysis of each release, instead of anecdotal impressions while throwing.
Another level of research could be looking for patterns in the plastics and cross-section/airfoil/dome/wing shape, etc. Whatever we call it. :D
And hope you've had fun painting! ;)
I'm 60 years old with bad knees and hips, so all my throws are stand still. My max distance is between 250 and 280 feet, but I get turnover with my Thrasher (Speed 12) and even with my beat-in Trespass (Speed 12) if I keep the nose angle down. If I go even slightly nose up, nothing but hyzer and 100 feet of lost distance. I agree completely with nose down contributing the most to getting turn. Thanks for the experiment Danny!
I absolutely love my beat-in Trespass, probably the best driver in my bag
The trim beard works this time looks good bro thanks for the info and all the hard work you do
What about the rpm’s of the disc? I imagine this is much harder to test but the gyroscope stability and aerodynamics of a disc likely change the faster it rotates (think speed differential from different sides of the disc)
Absolutely spin is why a poor forehand will wobble and get turbulence that create unpredictable flight. Once I learned to grip the disc and get the spin, did I learn to throw putters and understable discs with my forehand. My take away from this is throw your discs to learn what they do when you throw it at different power. Naturally the most touchy angle is throwing flat. I would say from there how hard to hyzerflip it. And if it hyzerflipa then anhyzer is most likely a roller.
Air density makes a significant difference. Elevation, temperature, and humidity will affect turn. What were the conditions and note them for the test? At 4500' I throw much lighter, 150g and less, discs to get turn and distance. I have a 172g 9 6 -3 1 disc in a high grade plastic that won't turn at all on a 300' throw (55mph flex) but have seen the same disc thrown in low elevation crash right on a 250' throw. Great video, shows how sensitive turn is.
Love the experiment! It would be helpful to have other data such as angle of release, wind speed/direction, etc. From the video it seems as if the amount the disc turned over was based off of other factors than just speed
Threw it anhyzer and said, "Yep, it turned".
I like the spirit of this experiment. There is a lot more variability in your wrist than you think.
I enjoyed the video. The big take home for me is that throwing nose down is key. I still struggle with that. It is the biggest factor for me with regard to distance. If I throw nose down, it goes far. If I screw up and release with a little nose up, it doesn't go nearly as far. I've only broken 300' a few times so I'm still on the quest for better, more consistent, ideally "effortless", distance.
interesting video. Elevation is for sure worth noting as well. As someone who used to live at 5k and now see level I had to rework my bag a ton. But also I feel like a lot that angle of release wasnt super consistant here, which is really hard to do obviously. But I felt like a lot that turned over were release with a slight anhyzer? or was that just me seeing things?
If you'd quit rotating your shoulders flat you'd be a lot more consistent in your angles. A flat swing plane does not exist. Everything is a little hyzer or anyhyzer angle. Even for a flat shot there should be a slight angle to your torso. It is a lot easier to have gravity help accelerate the transition as well as releasing the arm/disc unit, which you can't really do well if your shoulders are flat and you're trying to throw flat. It's inefficient and is why some discs turned and some discs didn't.
I would like to see a video of disk speed/distance ratios. For example a 12 speed disk thrown@ 55mph. Should go how far. As for a disk throwing robot, I think the best approach would be to modify the arm of a skeet throwing machine to throw a disk.
I think turn is more related to spin rather than disc speed.
More speed = more turn
but at the same time
More spin = more stability in flight = less turn but also less fade when it slows down
So it is the balance between these two factors which you need to get just right for the desired result. (assuming a nosedown flat throw with no wind)
As far as my high school physics go, a higher spin rate should reduce turn rather than increase it. There is an argument for higher spin generating lift on the left side of the disc -> turn, but the gyroscopic effect should be more impactful and reduce the turn. I also believe this is why discs act more understable when thrown with forehand since most people generate way less spin with forehands with comparable throwing speeds.
@@TheDrakmannen My tests on Physics of Flight would back you up. I think the lift on the left side doesn't play as much of a part as you'd think because if it did lift the left side, the front would actually lift because of gyroscopic precession. More spin means less turn and less fade, but I think it's minimal when compared to armspeed.
@@dannybigflix9125 Yea, didnt even think about that, but that makes total sense! Im guessing this must be why the disc fades at the end aswell, nose wants to go down so the disc girates left (RHBH)
I think it’s more about the rate of spin, relative to the speed. I’m sure there’s a window where that rate changes the flight significantly but in general, a slower speed with a high rate of spin should fly well for a short period of time. Same as a fast arm speed with a bad grip and no “ snap” will have it dump out early.
From my testing in the past, faster spin rate slightly reduces turn and delays fade because it increases gyroscopic stability. But the difference in total distance is negligible and the change in turn isn't noticeable for most shots. I don't think it has that big of an effect.
@@dynamicdiscs i agree. More spin should only delay the fade and not affect turn as long as the disc is not wobbling
@@dynamicdiscs it might seem to make discs more understable since the fade is in fact later in the flight but I don’t believe you increase the amount of turn with more spin. More likely only make the disc ride that turn angle for a longer time, meaning a longer potential drift to the right
Many of these, at least to my eye from the fixed camera and not exerting standpoint here in my gaming chair, don't seem like they turned. Some seemed to sort of stall and not begin fading, or simply go mostly straight. The raider throw around 5:30 stands out as one of these. Many of the others rated as "turn" also are just anhyzer shots that are following the angle.
I've always seemed to find that a disc resists turning a little more from hyzer to flat than it does from flat (or anhyzer) to anhyzer. I don't know why this is. But, I think a better angle (no pun intended) would be to throw them all on hyzer flip (more consistent release) lines to see which actually get up and move to the right.
I have been wanting videos to be done with a speed gun. The future is a lot more people buying disks based on their arm speed and what the disk does at that arm speed. The descriptions of novice advanced etc. will probably take backseat to arm speeds and the reaction of a particular disc with that particular arm speed.
Thank you for the video I like the mid ranges and something with the speed of 11 to 9. 😎
Maybe I’m misunderstanding things, but I would think that disc rotation speed would have a greater impact on the disc turning than just arm speed. You are right that a disc throwing robot would help 😂 Maybe Bobby can help get that approved
Agreed. Seems to be the consensus online
In the testing I've done more rotation only causes the discs to fade later, it doesn't change the high speed stability much. But it could definitely be something to look more into in the future!
@@dynamicdiscs As far as my high school physics goes, higher spin should like you say make the disc fade later, aswell as turn less. Thats why discs act more understable when thrown with a forehand since most people get less spin with forehands than they do with backhands. A contributing factor to this that headwind make discs understable. Your spin rate isnt affected but your discs airspeed is, making it turn more than usual. Thats what I believe happens anyways, please correct me if Im wrong ^^
@@TheDrakmannen I feel like my discs started to feel considerably more Stable, the more clean I’ve become with my release. I’ve wondered if this is because I’m getting more spin for the arm speed. 🤷🏻♂️ It’s an interesting thing to ponder.
There are many variables no doubt, but I do know that a year ago, I had a ballista and a destroyer that I could turn over (albeit not getting wonderful distance from them). And now, they both fly flatter but further.
My theory was that the extra spin was fighting off the turn, and that’s maybe why the top pros have to hyzerflip a bunch of their discs (even ballista pros, destroyers, and nukes)…they can launch discs faster than 70mph, and it’s hard to get enough spin to fight off turn at that airspeed.
We need the robot to test this, but my theory was always that higher airspeed leads to turning, lower airspeed leads to fading, but spin fights them both.
I always go back to Simon Lizotte at Waco, throwing a putter 492’ over the water on hole 18, laser-beam straight all the way. That had to have been unbelievable spin. I have to hyzerflip a 2-speed putter to get 270 out of one without it turning over too far.
@@JimWhitakerMusic wobble also makes discs understable(off axis torque) so the cleaner the release the more stable a disc flies. Also yes, pretty much any disc will flip a little if you put enough air speed to it. It has to be a ratio of air speed vs rpm or something similar since spin direction clearly is important:D
Still havent been able to figure out if its the magnus effect alone or a combination of magnus and gyroscopic effects that cause the initial turn in a disc.
I’m curious, what device are you using to measure speed?
Hi Danny, I'm doing doing research for my Bachelor's dissertation concerning CFD simulation of disc golf discs. I absolutely love the content you're making and I think it's the best there is so far. I'd like to get in touch with you, I have so many question. Who knows, I might even by able to provide some answers :)
You are really crushing it with content Danny! Keep it up!
Thanks again Danny. I can see the differences in the discs even though there's imperfection (not a robot lol). I'd love to see more of this in calm conditions to at least eliminate that as a variable. Maybe we could see more subtleties?? Can wait to see the video once someone sends you a robot!! Thanks again for sharing these incredible insights.
Thank you for another interesting video! It would also be very interesting to measure what speed that is required for those discs to hit the line you aim when thrown flat. I.e what speed is required for turn= fade.
I do enjoy your rambling and throwing frisbees...
Awesome content bro, can you give us some weights and plastic type?
Thanks! They were all around max weight and the plastic was either Lucid or Fuzion and the Mavericks were Lucid-X.
A few notes on your experiment:
1. Your follow through arm is setting off the speed gun (probably where those 56mph is coming from)
2. You should get several factory new discs in each mold instead of discs from your bag
3. You should release each disc on the same angle
4. You should measure distance of each throw for real world application.
5. A disc throwing robot would be amazing for this
Wouldn’t a disc released on an anhyzer angle be more likely to turn at a lower speed? Similarly to how nose down creates more turn at a lower speed, having the right side of the disc be lower and “showing more” to the frontal force should lower the mph necessary to creature turn, right? (Not a physics major, so would love to hear from someone who knows more than I do)
link to the radar? could be fun to measure myself and friends (to get som actual numbers on why everyone throws further than me ;) )
It's called the PocketRadar Ball Coach I believe!
Another factor is spin rate on disc. In baseball they have a camera that measure spin rate of the pitches. And that even though they throw slower they have a higher spin rate. Look into it.
I know this is an old post, but according to this data you would have to be able to throw almost 310 feet just to get a number 4 midrange to behave the way it was designed to. (7.2 x 43 =309.6). Hmmm - that might explain a lot.
This is a great idea love all the work you do opens up my mind to new things like wondering if you are putting more spin or less spin on some of the one that turned over of the same MPH so do you think that spinning the disc more would turn it over thrown at a lower speed (honestly trying to think how anyone could effectively determine spin every shot they throw)
So from my understanding what I see here as everywhere . There are a lot of variability from the throw than the disc.
People want there disc to do the job when to me it is you that have a bigger impact so less disc more accuracy practice.
You are the player not the disc thx for all those good video 👍
If you're throwing multiples of the same mold, what worries me is the same disc can be produced 100 times and you get variance between each disc
rambling and throwing frisbees ... I feel attacked.
Knowing the weight of each disk and plastic of each disk is important as well
Weight was close to max weight for everything. The difference in weight is usually just release velocity so if a disc was lighter, it would be thrown harder and easier to turn. So the end result was controlled for by measuring the speed. Plastics were mostly Lucid apart from the Truth being Fuzion and the Mavericks being Lucid-X!
You should do a video on rim width vs speed rating.
TORQUE makes a difference..I throw a bounty and it will land about 250ft (short hole) give or take 10ft consistently.....But when the basket shifts to the right (same distance) I don't aim different....I just torque it more (wrist snap) and I'm always on point.
should the manufacturer have some kind of idea how fast a disc should be thrown for a particular disc speed rating? like a 12 speed should be thrown at 60 mph while a 6 speed should be 30 mph to achieve the give flight rating for each disc.
People never believed me that I was getting my Shryke, Zeus, and Hades to turn while only having a max distance of 320ft. Thanks for supporting me
Ill believe the shryke and the hades, but a zeus? My zeus is a damn meathook and I can throw 400+ Every disc is different though :)
@@TheDrakmannen It's super beat in. It's flippier than my Shryke is now
@@EricLeeStepp Yea, those beat in zeuses are bombers :)
Same experience with Warship. Must be a fine speed limit.
The disc weights need to be factored also. The light the disc the easier it is for me to turn it over so that will also come into play. Also release is a big factor.
Curious as to what and where you get something to check the speed
Bushnell speed gun
alot of the turn especially on the lower speed mainly looks like the angle you released on to me.
What kind of speed gun are you using?
Have you thought about using a skeet thrower?
Does rpm not affect the turn I feel like if you put alot of spin on the disc it will affect the turn
From my testing in the past, not as much as you'd think. But it might be something to revisit in the future!
What was the rotation/spin?
Also the weight of the disc is the same?
You are forgetting the roation on disc. This is very important. You will almost evertime get more turn on backhand versus forehand due to faster rotation on backhand.
I'd like to see this, but with how much different weights affect the likelihood of it turning over. Bought a 110 gram Valkyrie and it's unthrowable. It practically cork-screws right out of the hand.
Different weights is a consideration. From the testing I've done in the past for different weight discs, pretty much the only result is a faster release velocity which can cause them to fly less stable, but probably not actually change the stability if they were thrown at the same speed.
@@dynamicdiscs discs turn due to lift generation. A light disc has the same aerodynamics as a heavy disc so it generates the same lift but has less weight and rotational inertia to counteract that lift so they flip more
Besides the slightly faster release
@@dynamicdiscs At the same velocity, lighter discs will definitely turn more. They have less inertia since they're lighter so the force of the air effects the disc more.
@@trulsrohk9 That's an interesting point I hadn't considered that. Maybe something to test in the future!
we need some sort of mechanical thrower so it can be repeated while isolating variables.
Is it a good thing if it turns??
I'm sure beginners don't get as much spin on a disc as you do. Can you do a few where you try to throw a 7 speed the same speed that it turned over in this video but with less spin? I'd like to see if it turns over.
Usually like your videos but this one doesn't feel too scientific. From what I see here the ones you released with more anny are the ones that are deemed to turn but with a right to left wind I think the angle is more the reason than the speed.
Dude really needs to consult with someone with an engineering degree and a background in experimental design. These videos have such a painful tone of "I'm confused by my data and don't know what I'm talking about."
Different plastics should have different ratings!
I have about a 10 speed arm and throw mostly 13 speed GStar Katana and Fuzien Sheriff, but not into the wind because they're too flippy.
I believe Mark rober has a disc robot, would be interesting to see a comparison using that.
You say armspeed, but is it disc speed that you're measuring? Are they the same speed? It would be cool to see the difference between arm/wrist speed vs. Disc speed if there is a difference.
The only thing that accelerates the disc is the body movement. So at the point of release the speed of the disc is the same as the part of the body it was attached to.
Important thing to note is that ground speed is measured by the radar, and the disc flies according to its air speed. E.g. an arm speed of 40mph into a 10mph headwind, will result in the same flight behaviour, as a 50mph throw into a calm wind.
You are correct, arm speed and disc speed are not equal because devises dont capture the final wrist snap, and any acceleration that comes from the final pivot of the disc or any other counter force that snaps the whip.
I wonder if disc weight has something else to do with the turn too
Does anybody know what hes using to see how fast the disc are coming out are?
What are you using to determine speed?
A lot of the ones that are turning look like you might be yanking it. Sometimes it looks like Anheuser.
Thank you for the video
Either I haven’t beat in my Graces at all or I can’t throw 48mph because they have not turned at all. Surprisingly stable for me.
Could be throwing it more nose up than he his 🤷🏻♀️
I presumed there would be a robot golf disc thrower (i.e. a machine), similar to the machines that throw baseballs at batters, that would spit out discs exactly the same every time, depending on the adjustments. Are you saying there is no golf disc throwing machine? Or just that you don't have one? Or it's just not as much fun and throwing them yourself. ;-)
My proto Sheriff turns a ton at 60+, 200ft spike anhyzer at my top speed. My metal flake Sheriff will only turn at my top speed, holds a great sharp line. My chameleon moonshine Sheriff's have no turn thus far. LHFH flat release/baby anhyzer at most.
I don't think I understand the turn. I'm still relatively new to disc golf. Some of the discs throw looked to be super straight but Danny said they turned. What am I not seeing? Or what should I be looking for?
That's understandable. I should have been more clear while describing it at the beginning. I'm referring to turn as a change in angle of the disc as it flies, not necessarily a curve to the right. Usually a change in angle will make the disc curve to the right, but maybe not in a crosswind.
Thanks for the data.
What about weight of discs?
What grip is used and would that make a difference. I feel with a fan grip my warship gets less turn with the same speed throw
Yeah usually fan grips are a little more nose up which gives control, but not as much distance so it's perfect for approach shots. But I used a power grip to try and get the nose down for these throws.
@@dannybigflix9125 oh I did not know it causes nose up. Thanks for the info. Makes so much more sense now
Regardless the arm speed the discs should turn differently depending on their turn and fade. No?
Also depending on how much disc speed you put on the disc. I imagine it would be good to test this to improve your game but it does little for the general public. Everyone will have different disc RPM's
I dunno if anyone seen the Simon video where he and another local pro threw the same speed, but his went farther because he gets better spin on the disc. Probably a big part of this result is everyone gets different spin.
I watched that video and the other person is Raivis Markons-Craig, and he was throwing with a bit of an air bounce, which slowed the disc down. It wasn't so much an issue of spin rate as it was the nose angle of the disc on release. 🙂
I thought turn was more related to rotation speed than forward velocity
Some of the ones he "turns" are just released with some anhyzer. Throwing them with a baby hyper and flipping that I would say would be "turned."
Pretty dumb video, but throwing flap is hard. Just work on your angles I guess
4:45 I think you lost footage
Thanks!
IT'S NOT 56!
This is a good concept and good effort but the wind, the consistency of angle (some of those were anny), the consistency of the radar, the humidity, the temperature, the spin, the elevation... SO MANY things that affect flights are out of your control. Your conclusion that it's all about nose angle doesn't really apply to people who throw with a good nose angle and a run up... so I don't know if this information helps with anyone's game. It is entertaining to watch, and what I think it teaches is that it's important to get out and do field work to build an intuitive feel for your discs and your swing.
where do I get a radar like that
Are these all max weight? Or did i moss you say?
Yes they're all within a few grams of max weight!
@@dannybigflix9125 I think even 3 grams is noticeable flight difference in discs
@@jahkyleezy1315 true but the difference would be higher release velocity. Which I was measuring. Heavier discs and lighter discs thrown at the same speed will fly more or less the same.
Slightly beat in warship the god disc
the ones that turned came out on anhyzer
2 speeds mentioned near every throw...? and the point
One thing that I don't think you're accurately explaining is that a disc with 13 speed and -1 turn is meant to turn when it's thrown at the speed that the disc is meant to be thrown at. So if you're getting -1 turn on a 13 speed disc, you would say that would be the speed in which the disc is meant to be thrown. You would want to find the speed for each disc in which the flight reflects accurately. You aren't throwing a 13 speed disc and turning it over, you are throwing it at the speed it was designed to be thrown. If you have a 13 speed disc with 0 turn and 2 fade, you could test out the speed in which it turns to find it's breaking point where you find it to become understable.
How are you getting 300ft out of a 9 speed driver at such a low arm speed? Im new, and ive been flinging the piss out of my Valkyrie, and not hitting 200ft. Its gotta be the nose down thing.
If you're not throwing 200 feet, a Valkrie is too much for you right now. Step down to a Leopard until you can get past 200 then work your way up.
My problem is distance. I can throw putters around 300 and drivers around 350. WTF is up with that?
it would help to have all discs with the same turn numbers
Yea I think it’s more nose angle than arm speed
Rotation is not 100% correlated to arm speed ? Would thought the snap you get at grip lock creates more rotation than when it is released early ?? But i am no expert at all.
Is Danny the Alton Brand of Disc Golf? 😎👍
How much factor does the angle u throw initially playa part? You can throw w anhyzer and technically it will give it turn
This has been a pretty common comment so I definitely should have clarified. "Turn" as I was using it is a change in the left to right angle of the disc, or "roll" technically. The curve that the disc flew on is what some people will refer to as "turn" though so I can see I should have been more specific.
Most of them "definitely turned" ones were released on an anhyzer.... Human factor makes it too unreliable .