Insane Fan Hack WINS Big! 😱 | Fan Showdown S6E4: Ultimate Static Pressure Battle 

I am the designer of The Wonder From Downunder, thanks for choosing it! I made my own manometer to test different versions . The result could probably be improved if some tape was used to seal the 2 halves together

Oh boy, we might end up with contraptions that are more tire pump than fan, won't we?

Centrifugal compressors compressing centrifugally

Damn, can't believe I've been watching this show for *6* seasons. Guess I'm just a... big fan.

C major chord isn't three octaves of the same note C, it's C, plus a third, plus a fifth, so C E and G, E is the major third of the C major scale, and G is the major 5'th of the C major scale.

The wonder from down under guy should get a job in a F1 team. He read the rules and decimated all!

the c major fan looked really good in the smoke test, it should get tested for airflow

If that fan is within 2 cents of C Major, I will subscribe to Milo I played a C chord along with the fan and gosh darn it, it made a C chord! lol

I love the wierd fans that aren't designed to be the very best. Another 0.1mm of pressure is obviously impressive for the top fans, but the ones that are supposed to look or sound cool are always my favorites Edit: ok but when it ekes out another 4.6mm that's worth celebrating. That's a season defining fan

8.0 WHAT!

Is the guy who designed the Wonder from Down Under the same guy who came up with the Cheater? Because this feels like "Cheater 2.0"

Fun fact, fans are being used as speakers. Normally, in a speaker, a magnet induces vibrations onto a cone that pushes air back and forth at a specific frequency. In a rotary subwoofer, however, large, flat blades are attached to a mechanism that changes the pitch angle of the blades from positive to negative, which is actuated by a magnet just like a normal speaker. Changing the blade pitch back and forth at a frequency has the same effect as a speaker cone, but it's able to move a much larger volume of air as it spins, which makes it much louder. This technology is sometimes used in pipe organs to emulate enormous pipe lengths (80, 120, 160 ft long or more) to be able to produce notes that can be felt more than heard. Since they're so loud, though, it creates an excessive amount of noise pollution as the design requires an "infinite baffle", or venting straight outside to produce a desirable effect inside. I saw a guy on youtube make one in his house and nearly shook the walls apart as pressure increased and decreased so rapidly.

Yay i made it in, I just made what felt like it would do good, and named it what it looked like to me. Nice to see it printed out, Danijel Sawblade.

For anyone curious about the music theory, you take a frequency (say A=440hz or 440 ocilations per second), the octave is exactly twice the frequency, so say 880hz, if you divide that into 12 segments, that is your 12 notes in western music. The C major scale uses 7 of the given notes (if i'm not mistaken) so you play the 1st note in C major, then the 3rd note in the scale, and the 5th note, and that is your C major chord. (I'm also just a nerd on the internet so take all of what i say with a grain of salt of course)

The only criticism I can offer this channel is that I need more videos. I love this stuff. I'd love to get more videos on your general 3D printing experiences.

I am quite impressed on the breadth of domain specific knowledge MH commenters here have. Fluid Dynamics, Heat Transfer, Sound Engineering, 3D printing, and now Music Theory. Glad I'm here.. though I can't barely contribute anything.

Before: "3? That's impressive!" Normal entries: "Let's have some fun." Wonder from Down Under: "Hold my beer, his beer, everybody's beer."

The Wonder absolutely _decimated_ the competition. Wow.

I'm not sure which is more impressive. Getting the notes that close on the c major (although that wasn't technically a chord, it's octaves) or the sheer static pressure of the wfdu.

gosh i love the turbo inspired fans itd be sick if someome did a entire car themed pc build using similar mechanics to how a car would actually work

Next season you should take an heater with a radiator and look at the power use to maintain it at a specific temperature, a better fan will by drain more current from the heater and it will be a better indicator of how good a fan is overall I think 🤔

Respect to the Wonder from down under designer! I had a great laugh when I saw how he just went all out.

WFDU looks like gigantic laptop fan

OK.....WFDU is seriously impressive, well done. Awesome episode, thank you.

Way to think outside the box from down under, Congrats on taking the first place so far a head.

With the WfDU, if they could mount on 2 parallel on a CPU cooler... but route the output as ducting across the side of the cooler and out the back of a PC case (rather than just the side hitting the glass) that could be a really sick way of ejecting heat out of a PC. Like the old PC exhausts of yore!

I feel like I have been watching this show my whole life and it is still one of my favorites. I love how you started fading the smoke test music in leading in before the footage started. I hope this can go on for decades 🤞

I'm at work so I won't be able to watch until later, but every time I see a new thumbnail it's so hype I can't wait and sneak to watch your videos. I love exploring the limits of what's possible.

Wow 8mm, I'm "blown away"!

oh boy... i've never laughed this hard on any fan showdown episode. but that 8.0 got me xD

Loved the slow reveal of the wonder’s output. Made it more satisfying.

What a cool idea for a series. Just stumbled upon this randomly 🔥

Another great video thanks Major Hardware!

the PowerCap and Sawblade are really nice brown noise generators. Very soothing dark tone.

that was awesome to see the wonder, love seeing engineering just directed at the goal and smashing previous efforts

Wow. wonder from down under 8.0! I think we need more tests on that fan. How bad is the airflow?

The c major had a lot of good inflow from the edges, and imho did one of the best jobs of collecting air around the perimeter of the fan.

@MajorHardware Thank you for taking the time to insert the super charger clip. I literally laughed out loud at that. I needed a good laugh.

so the guy who made the WFDU made what it essentially a desktop-sized laptop fan. Nice. love it, tho one adjustment i'd make is have an opening on the other side as well. more spaces for air to enter, more airflow.

If you have 4, 5, and 6 blades, the 6:4 is a fifth, and 5:4 is a major third. Also, the C-ness of it depends on how fast the fan is spinning. If C1 from the 4-blade part is like 32Hz, E1 is like 41Hz, and G1 is like 49Hz. I maybe see these in the graph, but it's dominated by the octaves at 64ish Hz and 128ish Hz.

This was the most interesting show down yet!

yay for new episodes!

Milo needs to now create the brown note fan!

Great work WFDU!!

I experiment with various radiators for water cooling in my shop for customers "custom" builds and am always open minded when it comes to cooling. I watch this channel for inspiration and ideas and have been pleasantly surprised at the results you deliver and the wonder from down under is clever and genius in its approach. No one solution solves every problem and my own experience isn't enough. I need and appreciate channels like this so that I maintain unique approaches to my customer needs. thank you and please keep up the good work.....from all countries. Shawn Emergency PC Repair of Colorado

Now we just need the pressure from the down under and the dBA from the sawblade and you have a perfect solution 😁

I really like the concept of the C Major fan, and hope the following can help evolve the design. A note is an audible constant frequency. An interval is relationship between two notes. A chord is two or more intervals played at the same time. As shown in the video, an octave interval is either 1:2 or 2:1 of the frequency of the note it refers to. That reference is called the root, and is the note that names the chord. E.g. A C-chord has the note C as its root. A so called major chord combines the the root with a major 3rd and a perfect 5th interval. The relationship between the notes in the chord is always the same, no matter the pitch of the root. The notes you find on a piano (twelve-tone equal temperament) are equally spaced in twelve notes between each octave with the ratio 12√2 or ≈ 1.05946. For fan design it might be easier to use these ratios: Unison = 1:1 Major 2nd = 9:8 Major 3rd = 5:4 Perfect 4th = 4:3 Perfect 5th = 3:2 Major 6th = 5:3 Major 7th = 15:8 Octave = 2:1 Good luck!

First time here. This is such a great odea for a series! I may have to go back and watch them all.

Love the Air force decal in the back!

5:25 FINALLY!!! I am waiting for this design since Season 1! Thank You!

Omg! The audio clip during the WFDU pressure results. Lmfao! What!

I hope I can grow old with you and this show, bring my eventual kids to your channel and share this consistently cool show with them.

Labyrinth seals on the side plates. The problem with pressure is blow by. Blow by is limited by clearance. Labyrinth seals run far larger clearances by dividing the pressure drop per seal. Ok, Short version, the rotor has a spiral raised on it. The side plates have an opposite spiral on them. This gives many many intersecting seal edges (its edges not area, think hose vs restrict or plate) plus the imparted angular velocity of the air is forced outwards in exactly the same way on the stator as the rotor. This then acts as both centrifuge and scroll compressor with smaller blow by.

The C Maj. fan would be louder if the blades passed closer to the supports for the motor. The blade passing the support is where all the tones are going to come from, which is why most fans use a curved blade so as to reduce this effect.

I just want to point out that, at a certain point, cfm matters. When it comes to cooling inside the tight spaces of a pc case and heatsinks, it's important to strike a balance between static pressure and cfm. This is because not only do you have to push air through tight spaces, you also have to push enough of it fast enough to keep up with the continuously generated heat. My personal pick for best overall fan is the Angel! It easily strikes the best balance of cfm, static pressure, and dba, all without cheating by adding extra pieces or protruding out the base. Though I do love both the Dragon Wing and Devil fans as well.

Awesome episode!!!!@!

Gotta say, the comedy is getting better and better! 👏👏

The wonder from down under understood the assignment!

Shots Fired!!!! 😂😂

The Wonder From Downunder might be the ultimate exhaust fan. Evict that hot air, now!

You can have 6 fans for 6 different notes, and play according to desired cooling. so cool. hope to hear it.

If the fan is shining for a C Major, the inner ring should produce a C note, the middle ring produce an E note and the outer ring produce a G note.

I'm honestly most impressed with the Sawblade. It seems a clean improvement over the Noctua A12x25, same noise and higher static pressure at a lower RPM. I would be interested in seeing an airflow testing of that one, as well.

Nice, James, I like how you mounted the Wonder to the smoke barrier.

Now we need a Robot vacuum showdown !! Awesome video

Very specific words in this specific episode :)

Haha, the Wonder sounds most like a vacuum cleaner, and the C Major sounds kind of like a lawn mower!

I don't really understand the numbers, but when second place is under 4, 8 is absolutely incredible

I'm a huge fan of this series 😊

good episode. So many unique desisgns

These videos could be 20 mins long with 2 minuites of smoke test for each fan, its so nice to watch

I some how lost track of this channel, glad it popped up again.

I laughed so f*n hard when you used that sound sample "What! What the F***!" Omg. Bro... Stephan has some serious engineering props. He probably actually knows how to use a fluid dynamics app.

The c major fan is awesome. Sounds really nice.

What! Got me good😂

Love the videos and 4k60 QUALITY I always put the quality on the highest

Dude is about to witness an exponential improvement competition just like what hapoened with Tetris last year

What an amazing design. I would imagine it would be really good for pushing air through water cooling radiators.

The wonder is a centrifugal fan design. Used mostly as you said for blowers.

Honestly, "the wonder from down under"would be great for low profile CPU coolers and then spewing it out the back. It doesn't take too much extra space and clearly does well. Frankly, this should be a thing for such setups.

these super loud strong airflow fans remind me of that old Typhoon pc fan. it was so loud and strong it broke my 980ti gpu fan just for being on the receiving end of it's airflow. it was nuts

FANTASTIC. Love it.

The wonder from down under is basically centrifugal blower. When the rotor starts spinning, the pressure around the outside increases (this is due to centrifugal force, which is a real force that is experienced by objects in a rotating). This causes air to exit through the outflow opening. The exiting air also draws in air from the center. These will always win static tests assuming they are properly designed. The power cap is almost a blower but they kind of screwed up the design. Maximizing static pressure involves considering the characteristics of the driving motor also. The rotor has to be sized so the motor operates at a speed and torque where it delivers high power.

Holy cow, that Wonder is quite the sucker!

In music there's a concept called interval, which is the pitch difference between two tones with some arbitrary frequencies. The higher frequency divided by the lower frequency is called the frequency ratio. Due to a combination of physics (harmonic series), and how tuning systems and history of music has developed, certain frequency ratios have been defined exactly or approximately, depending on the system of tuning that's being used. Now a major chord always has three tones: The base frequency, a major third frequency above it, and then a perfect fifth as the highest tone. The frequency ratios for these intervals are, 5:4 for the major third, and 3:2 for the perfect fifth interval. These interval ratios are from something called five-limit tuning, but there are other systems such as equal temperament tuning which isn't exactly following pure integer ratios but it gets pretty close. I won't get into reasons why equal temperament tuning is more common today, let's just say it has to do with proliferation of keyboard instruments (pianos, pipe organs, etc.) and leave it at that. So, for example, if we take a frequency of 220 Hz as the base tone, the major third of that would be 275 Hz, and the perfect fifth would be 330 Hz. These notes correspond to A3, C#4, and E4 notes, forming the A-major chord. Now this fan is designed so that it has three rings, each with different amount of blades. The idea here is that every ring rotates at the same speed, but the different amount of blades gives a different amount of "hits" on air per rotation. The inner ring gives four pressure pulses per rotation, the middle ring gives five pulses per rotation, and the outer ring six pulses per rotation. If the fan spins fast enough, these pressure pulses merge together to form audible tones. And the ratios between those tones depend on the amount of blades per each ring. Since the blade number ratios are a perfect match for the above intervals, the middle ring produces a tone with a frequency that is is 5:4 of the inner ring, and the outer ring produces a tone with a frequency of 6:4 of the inner ring (or 3:2 if you simplify). So the fan will always produce three tones that form a major chord; the exact tones depend on the speed at which the fan is running. If we assume that the fan is designed to spin at 2016 RPM, that means in one second the fan rotates 33.6 times. This means the inner ring produces 33.6 x 4 = 134.4 pulses per second, or a frequency of 134.4 Hz. This forms the base frequency of the chord. The middle ring produces 168 pulses per second, corresponding to frequency of 168 Hz. And the outer ring produces 201.6 pulses per second, or a frequency of 201.6 Hz. These tones correspond quite closely to the notes of C3, E3, and G3, which would be a C-major chord. However, if the fan's running speed changes, then it won't be a C-major chord. Unless the speed changes in octaves, or multiples of two.

Whelp... it's now a fight for second place

the smoke test music reminds me of that scene in hackers when zerocool takes over translating the virus...

Interesting! This is the first time I've heard someone else mention how blade count follows the harmonic series. The 5 blade is 2 octaves and a major 3rd over the motor note

Ya I was always confused as to why blowers were not more popular than axial-fans. I bet that blower can also outperform the others even with a clogged-filter/back-pressure.

Always love the smoke test music

I am so used to the music playing during the fan testing montage, that every time some other random completely unrelated video uses the same music I am like "oooh! Are we testing fans?!"

An Octave is a doubling of frequency of the note. So if you start on a C3 and you go up to a C4, the audible frequency of C4 is double that of C3. An Octave consists of 12 notes C, C#/Db(flat), D, D#/Eb, E, F, F#/Gb, G, G#/Ab, A, A#/Bb, B, then the Octave is the next note C

Very interesting. I'd love to see the practical performance on a radiator!

I would be interested in you did some of these in abs and then vapor smoothing to see how much it helped with sound and airflow. My guess would be a ton

Octaves are notes in a higher or lower register that share the same letter. He's got three octaves of C, which is why it's a chord instead of a note. Notes range from A to G and then repeat. Like 0-9 without a 10's position.

I really would love to see some idea of the volume of air moved by these fans. Static pressure absolutely has value but high static pressure /and/ moving a large volume of air would be absolutely killer.

imo for next season it would be cool to have a points based system with both flow and static pressure tests. So say there are 100 fans the top fan in static pressure gets 100 points + whatever they get in flow, and the top flow fan gets 100 points + whatever they get in static pressure. They way when you add up both scoring metrics you can find the "best" most well-rounded fan.

That wonder from down under fan really blows.

So the Wonder From Down Under just brought a blower fan to an open-air fan fight. If nothing else, it's served as a perfect example of why those things are so useful and why graphics cards that have them only need one. The downside is the amount of noise they make; if you're aiming for a quiet setup and have enough airflow for it, open air fans are the way to go.

I believe the Power-Cap was intended to flow forcefully out of the narrow side, compressing air-volume down to a nozzle, I believe running it backward inhibits its engineered gains. Might try it again even off-camera to be sure.