Revolutionizing Cooling: Anti-Stall Ring Boosts Static Pressure! | Fan Showdown S06E03

Play World of Warships here: wo.ws/3HvDU3N
Thank you World of Warships for sponsoring this video.
During registration use the code BRAVO to get for free: 500 doubloons, 1.5 million credits, 7 Days of Premium Account time, and a ship!
Applicable to new users only.
Welcome to Episode 3 of Season 6 in our thrilling "Fan Showdown" series! In this episode, we're diving deep into the world of cooling innovation as we test four new fans, each equipped with its own unique intake design. What sets this episode apart is the groundbreaking inclusion of an anti-stall ring in one of the intakes, designed to significantly enhance static pressure performance.
Join us as we put these cutting-edge fans through rigorous tests to evaluate their cooling efficiency, noise levels, and overall performance. Discover how the anti-stall ring technology revolutionizes airflow dynamics, improves static pressure, and enhances cooling capabilities, setting a new standard in PC cooling solutions.
Whether you're a PC enthusiast, gamer, or tech aficionado, this episode is packed with insights, comparisons, and surprises that will keep you on the edge of your seat. Don't miss out on witnessing the future of cooling technology unfold in the "Fan Showdown" arena! Like, subscribe, and hit the notification bell to stay updated with all our exciting content. Let's dive into the world of cooling innovation together!
My Twitch
/ majorhardware
Fan Showdown Instructions
• EVERYTHING you need to...
Fan Dims
www.thingiverse.com/thing:455...
Submit your design (at least .STL or .STP / .STEP file)
[e-mail]
Cameras used.
BlackMagic Pocket cinema 6k pro
amzn.to/3m2RLVw
Reddit
/ fanshowdown

[@MajorHardware]

Play World of Warships here: wo.ws/3HvDU3N Thank you World of Warships for sponsoring this video. During registration use the code BRAVO to get for free: 500 doubloons, 1.5 million credits, 7 Days of Premium Account time, and a ship! Applicable to new users only.

[@sebbes333]

10:00 Please make a static-pressure test of Anti-Stall: With & Without the yellow ring. To see if it is the geometry of the fan, or if it is the ring, that adds all that extra performance, and how much it adds. Thanks :D

[@_WyreTheWolf]

Time for you to start watching "The Mighty Jingles". You will get a chuckle or two.

[@RobbyRobinson1]

I found this game because of your channel and I really love it.

[@bojik2616]

Curious how much more you can get out of a noctua using wd40 specialist silicone fast drying on the bushing. On smaller laptop style fans i use fot assorted things i get rpm, airflow and qbout 30-40% reduction in amp draws. I am curious if you can see a noticeable change in a non sideblower fan with your airflow and pressure tests

[@pwatoscry2087]

Thank you for 6 seasons :D

[@TheNPCShow]

You should test the Anti-Stall with the ring vs without the ring 😄👍

[@beholder8467]

And maybe a little bit of smoke too.

[@CrashPilot1000]

My 1st thought as well. Why in the world wouldn't you do that after talking so much about that ring?

[@hurrai5519]

crazy guy didnt think of this. you add something new, test it test without.

[@DUKE_of_RAMBLE]

Hell, I'm further curious on what this thing pulls off in terms of CFM! 😅

[@No_Way_NO_WAY]

Just wanted to write this. Its a super easy comparison test. Should be done with every fan in the showdown. All fans should be tested with and without shroud. Maybe the submitters can tweak their designs based on the results.

[@mban2748]

I would be interested to see shrouded fans measured with and without their shroud. Another data point to compare.

[@802Garage]

Exactly what I was thinking.

[@spedracer55]

agreed

[@jacobrollins37]

Definitely want to know what the difference is.

[@TheRattleSnake3145]

No difference as there is no airflow.

[@ScottyMcCraigles]

To see if the shroud helps on the anti-stall, couldn't you do a pressure test with and without it?

[@theshinken]

I'd be interested in that as well.

[@shankyoncloud7420]

That should be a test for any fan that comes with a shroud. Or maybe a shroud design challenge (while keeping the fan the same)

[@reverse_engineered]

@@shankyoncloud7420Yes! I love the idea of specifically trying to design a shroud. Considering how many people include one and the concern that maybe it's "cheating", it would be interesting to see how much that matters, especially for static pressure. It seems more likely to me that a shroud would matter more at high air speeds than with high static pressures, but fluid dynamics aren't at all intuitive, so it would be interesting to see what happens.

[@wombatillo]

Yeah. It's a clear 'duh!'.

[@azriel5]

I like how as he's saying 'it is hard to see if the shroud did anything' as he is pulling the shroud off, and never thought 'I could run a test with the shroud off' lol

[@ratykat]

I don't know why, but KZbin stopped recommending the fan showdown series for a long time. I'm so glad it's still going!

[@cadeawesomeface]

Literally, I would watch these when I saw them but never realized I wasn't getting them anymore

[@azriel5]

funny how I completely forgot it existed, and here I am again

[@emmamitchell1582]

I would like to see the anti stall tested in two more scenarios: Without the anti stall ring Without any shroud I think it would be very interesting to see how each component influences the result.

[@secretterminal2179]

Hi audio guy here. I feel its worth mentioning that pure DbA isnt a true representation of how "loud" something actually sounds like. Instead of measuring pure DbA id measure the fans noise output in LUFS, which is a measure of how loud something might actually be perceived to the human ear. Id say its worth looking into, even if getting a LUFS reading might be more complicated than just a pure DbA and spectrum measurement.

[@Hyratel]

pending that (and laypeople knowing what it's talking about), that's why he has the frequency chart. some designs (like the Pressure Master in this Episode) have clear spikes (looks like 30, 120, 480? that'd make it what... 4th harmonic? I'm not an Audio Guy), I'd like to see those LUFS scores against ones with a Noise Only plot (like the Slim for this one. no clear spikes)

[@SuperAd1980]

As the fans are already different distances from the mic, the test is already invalid, so anything further would be even more pointless

[@wilkuuu4016]

Hi, hobbyst engineer here. Ring on Anti-stall will make sense if you test this fan against a rediator with FPI above 16 ar with X-fins :)

[@lapin46]

common feature on current turbo compressors

[@802Garage]

The Raxial was pretty impressive all things considered. I would have liked to see the Anti-Stall tested with and without the ring and the Pressure Master tested with and without the intake cone. Just for fun. Also either that filament hides lines super well or those prints just came out incredibly clean.

[@ABaumstumpf]

The Slim is interesting - it shows that people fundamentally do not understand that weight has little to nothing to do with speed. For a fan it can be 0.1g or 5g - if it has the same form it will perform the same, including RPM. The thing that influences speed is the blade-geometry and how well that profile fits the power-curve of the used fan-motor and controller.

[@naomiam687]

It would affect spin up speed/time but not top speed.

[@laurencefraser]

well, beyond there being an upper limit to how much weight the motor can move at all of course.

[@RyTrapp0]

Land Speed Racing cars are heavy AF - because they race on dry lake beds(dirt or salt flats) where traction is at a premium and they have a 5 mile run up to get up to speed. Just about all the weight they can add is a benefit to setting a high top speed, not a detriment. Even if they were on pavement, all the weight would still help because the wheel driven cars(the fastest of them anyway) are trying to put down 4000+HP through hard skinny tires designed to hold together at 500+MPH lol. Take it ALL out the moment you hit the drag strip though!

[@justwinclassic]

A bit like a flywheel in a car… the mass difference doesn’t make it faster or slower in top speed, just in the acceleration.

[@techno1561]

Wonder if it's a bit of confusion from the motor getting bogged down with the bigger fans. Since it's getting bogged down by big heavy fans, logic would suggest that a lighter fan would go faster than normal, except that there's a top speed for how quickly the motor will go.

[@reverse_engineered]

Very neat! With all the talk of "I wonder if this ring makes a difference?", I'm surprised you didn't try testing it with it off. Especially considering how easy it was to remove. Perhaps you can throw that in for the next video?

[@mylarhyrule904]

The only series on KZbin I drop everything for new episodes of…

[@casey360360]

The smoke distribution on the Raxial was extremely satisfying.

[@AlphaMachina]

I was seriously surprised by the Raxial. It was probably the most homogenous looking exhaust I've ever seen on this show.

[@cosmic_cupcake]

That's probably because the fan blades blow sideways instead of sweeping directly over the Frames' support struts. if the fan was open on the bottom we'd see more turbulence.

[@nstone2037]

Anti-Stall definitely looked like it was energizing the boundary layer around the intake funnel. There's a noticeable gap between the sides and the main smoke flow region and the smoke doesn't seem to be losing velocity along the boundary at the same rate as other designs I've seen. Worth investigating further for sure.

[@ANonnyMoose5]

The Anti-Stall is based on a well-established feature in the design of turbocharger compressors, but we would call it an MWE-slot (Map Width Enhancement). In most designs I'm familiar with, the slot would be further down though, past where the blades start. I wonder if tweaking that would allow for greater static pressure performance.

[@cosmic_cupcake]

looking back at the competition, I should've pobably pulled the edge of the shroud over the Raxial's fan blades. That gap is an obvious source of pressure lekage. Still, I'm quite pleased with the noise testing. thanks for getting to my fan so quickly!

[@cosmic_cupcake]

Also that anti stall ring looks curious, we should investigate further.

[@AmosCheek]

It would be interesting to see if there is a difference from the Anti Stall fan wit and without the ring

[@thom_lapatate4842]

I like the new "wall mounted" smoke test. It shows thier ability to "suck" air much better than the "floating" setup 👌

[@gab10181]

I watch this show on and off for the last few years now, and it is a little bit like coming home every time. Keep up the good stuff 👌

[@TewaAya]

This channel is like the warthunder forums but people actually need to construct files to "win" in their theory/argument. Love the community.

[@JeremyCulbreath]

That Anti-Stall is just gorgeous, though.

[@FNPetersen]

You should do a season eventually where you test the best fans from every previous season with every other season's tests. A comprehensive exploration of which fan actually offers the best all-around performance across the board.

[@spaceshipfiftyfour366]

Whoa! The fan showdown still continues! I saw all of season 1 and partly season 2... and somehow got lost in the depths of the internet. ...and now the algorithm pusht me here again. you style is way more professional now - i love it! just put all of seasons 5 & 6 to my "watch later" list. will work through it in the coming days. thanks very much for your awesome content!

[@7sevenseasons580]

Was watching you when you only had a few subscribers, now seeing how many you’ve gained is so good to see! Something different and unique

[@salimufari]

What I saw about the Anti-Stall was the intake on the smoke test. The incoming airstream was focused & seemed to have a solid amount of pull. Accelerating the air from several more inches away from the intake body.

[@Leadvest]

We need a test with the anti-stall ring off, and one with the triangle holes covered with tape.

[@justincase5272]

Gear Ratio for the Win! Optimum mix of pressure and dB. When I built my server cabinet, it had space for four case fans. I pointed two in and two out, in a configuration which provided (IMHO) the best cool-air flow to both the processor and graphics card. Here's the Kicker: I wired each pair in series! So, half the flow, but a quarter of the power, and far lower noise. Did my chips overheat? Far from it. The key was finding a case that supported four large fans. As a result, it didn't need a screaming jet of airflow. As they received a steady flow of cool air, the proc and graphics fans were more than capable of keeping their respective components quite cool.

[@techsupport8967]

The anti-stall fan's ring is very similar to anti-surge turbocharger housings, and fills a similar role.

[@Bravohalo]

The Anti-Stall isn't really anti-stall, but stumbled on a boundary layer design. The recycled pressure creates a layer of air separating intake airflow from the surfaces reducing drag. Redesign the fan like (or just use) the Slim and it will rage.

[@realgoose]

Best series on YT!

[@Frenotx]

Just dropping a comment to say I've been watching the series since season one, and am still enjoying it. Thanks for the entertaining content.

[@kyoudaiken]

7:36 - "I'mma subsiting in a cube. I'mma subsiting in a cellulose cube!"

[@MrMaramor]

I would be curious if we went on an adventure of testing just the intake designs using the top X fans. Seems like there might be a design that works best and might improve fans in general.

[@BooleanDisorder]

This series is so interesting. Dunno why but I just love the idea of an efficient fan contest.

[@MrGiXxEr]

You need to test these WITHOUT the intake shrouds also!

[@AmaroqStarwind]

There are some people who invented an "acoustic metamaterial" a few years ago, which looks like a ring with grooves throughout. Nearly all sound within a certain frequency range is canceled out through passive destructive interference. Look it up when you can!

[@SilvaDreams]

That isn't destructive interference, that is done by playing back the inverse sound wave to cancel it out which is the basis of sound canceling ear phone/buds. What you described is stock standard sound dampening which is used for all sound proofed rooms. As the sound waves encounter the sharp edges it breaks the wave up so it can't bounce off a hard surface.

[@AmaroqStarwind]

@@SilvaDreams Actually, what I described is *not* sound padding. The ring has channels along its surface through which sound waves can pass through... But only of a specific frequency range. These sound waves then interfere with eachother.

[@dbeasleyphx]

Love this series!!

[@timb1117]

I'm a simple fan. Somebody spins me, I create pressure.

[@CEPangolin]

Almost every time I watch one of your videos. I notice that the fans almost always seem to do better when a gasket is used between the fans and the barrier wall reducing the amount of air leakage around the entire fan setup allowing the fans to better pull or push the air better.

[@wrefk]

Man those prints are so good, so smooth. Really impressed

[@garrykanter5773]

I wonder if Noctua is more focused on dBA than on throughput? Maybe try to match their static result result, with the lowest dBA?

[@EggBastion]

You're putting a lot of effort into making these assembling the setups , collatin the results and whatnot - How consistently do those designs print & mount with/without needing a ton of work balancing them? I'd _really_ like to see you smash it over the line; get some LUFS figures recorded for the apparent noise and neaten up those smoke tests - maybe find a way to incorporate back pressure into those too?

[@Chris-ru9yy]

I'm noticing a distinct lack of gasket material in this episode

[@IrocZIV]

I'd like to see different "divisions" shrouded fans, normal sized fans, low noise fans ect...

[@Bianchi77]

Creative video, thanks :)

[@sannyassi73]

Might have been neat to see what happened if you removed the triangle cut outs from the anti-stall or just taped over them. That might show if those cutouts made a difference- I feel like they did though.

[@jakejager]

The anti-stall fan is pretty smart, with some adjustments you could probably get even better results.

[@OcularPerceptions]

Love these videos. Later, like next season, you could add a frequency sampler so you can graph the median frequency range with the noise chart. Some of the fans appear quieter than the DB reading suggests because the frequency is not as intrusive to the ear as that generated by other fans.

[@mattypow82]

Awesome as always thanks

[@jasonshallcross2741]

Can you re-test the anti-stall without the ring to see how much difference it makes?

[@josepheads559]

Please

[@_Ferrigno]

love the channel :D

[@leezhang6316]

You should have done a test with the ring off and with it on so you can know for sure if the ring made a significant contribution to its performance.

[@GooseGosselin]

Every episode brings me one step closer to start designing a fan of my own.

[@C_Castillo]

Static pressure smoke test should be implemented

[@digitalplayland]

Can we have a series of fans with bird wings, fish fins replicas?

[@dmk_games]

Fan weight only impacts how long it takes to get to speed - not max speed which comes from the motor details vs the force applied to the fan by the air.

[@bismuth7730]

It would be cool if once you show the fan scoreboard, you also put in pictures of 1. 2. 3. place just so we remember what best fans of the season look like. Love the channel btw! been watching since forever!

[@float32]

I would rather see a flow vs pressure curve.

[@BlueThunder1965]

YES more New Major Hardware videos ! 😊

[@michiganengineer8621]

Love how YT put their ads right in the MIDDLE of your Warships sponsorship.

[@hardwire666too]

Rando Idea for a new test. Build a plexiglass box with an exact internal volume. Maybe something like half or .75 of a meter or 1 foot (cubed duh lol). Use the smoke machine to fill it. Use light sensors to shut off the fan when a desired visibility is reached, measure how long it takes a fan to empty the box. Might not produce the most scientific data but would be cool to watch and as well could be used for some bar napkin kind of measurements. Also you should have shown the results of the Anti-Stall without the ring to see if there was any difference.

[@BReal-10EC]

It would be nice if designs would focus on quiet operation more.

[@float32]

If one wants low noise, one just attaches a box fan to the side of their computer.

[@frankdobs]

@@float32That doesn't get rid of heat

[@alttabby3633]

@@frankdobswouldn't be "low noise" either

[@frankdobs]

@@alttabby3633I know i use mine for noise canceling lol

[@JMILLERTEK3D]

You should build a smoke box; an enclosed clear chamber that you fill with smoke and see how long it takes the fans to evacuate the smoke from the box.

[@christiangregersjrgensen3828]

Every time the music comes on all I can think about is "The Journey Across DaFan"

[@Gesteppie]

I hope one day, the AirJet gets onto the Showdown. This thing is the future of cooling, but it's far too expensive for commercial use atm.

[@jsbrads1]

Jet engines intakes are designed to swallow the air at cruise, the increasing area is designed to slow the air for the fan because if the air is moving too fast you can have sonic shock conditions occurring when the air touches the fan blades.

[@DirtyGingy]

plenty of GPUs still come with blower fans. But they are designed more for use in server racks. Blowers work well, but are noisier

[@JenkoRun]

I think what makes the anti-stall special is that it takes the opposing force and turns it into an assistive force, that's an important principle.

[@jacobhgoldman]

I’d love to see a test of fan weight vs rpm across different “fan categories” like you had in this video.

[@joshuahansen5486]

I think emulating a water jet pump would give you amazing static pressure it might have trouble with RPMs due to weight though

[@CaptnApathy]

I hope one of these seasons is just the top 10 or so from all previous seasons being tested in each of the different test setups they weren't in yet. find which is best in general rather than for a specific task.

[@hyperturbotechnomike]

I'm watching this for a while now and my favourite fan will still always be the slug V1. But the anti stall ring still looks kinda nice.

[@furank_i]

I've noticed that there's a relation between the better performing fans and their smoke tests, the better fans seem to better redirect and speed up the air behind them on a clean vortex on the fan hub's axis while the worse performing fans seem to spew the air out more randomly

[@Hyratel]

I'd like to see some serious engineering analysis of those smoke tests! They're very interesting to watch as an Interested Layperson

[@Kytetiger]

The anti stall Flow test looks really nice

[@theredstormer8078]

Would be pretty cool to see a smoke test with a capped off transparent tube to see if it forces the smoke into the tube or if air is going backwards through the fan

[@BRUXXUS]

Cool stuff from all the entries in this one! The Raxial looks really beautiful. Almost wonder how it would work without the back plane taken off so it's more of a standard fan, but same blades.

[@cosmic_cupcake]

Probably not well, since it goes against a lot of the conventional wisdom of fan design. Then again, I like going against the norm, so maybe I'll mock something up and make a new submission. :)

[@Roy-K]

With the anti-stall, I can see how that ring would make some difference where rather than air sticking to the sides of the intake from something like the Coanda Effect, the surface is covered by a thin layer of air moving back into the intake, reducing some frictional losses Not that friction makes a huge difference with these fans but it is interesting

[@ctrlaltdel02]

I wonder if static pressure is limited by the fan motor itself. Recently built dust collector for my wife and used 3 of these PMD1212PMB1-A(2).F.GN ,I am not expert by any means in ventilation systems, but these seemed to be good for the price and static pressure, as they need to suck air through paper filter, 16,5mmH2O seemed good idea. In the end she is using about 75% of power usually to my knowledge, so pretty much nailed fan sizing. For the reference paper filter is car interior air filter about size of 250x300mm as it defines working area too.

[@RJTC]

I only just discovered the channel, from the video with the big Australian centrifugal mod. Thinking about the basic principles; any normal axial fan has a very limited static pressure capability, as once the air stops moving through it, the air in the blade area just rotates with the blades - most of the force is then radial. Venting (like the anti-stall ring?) to allow airflow past the blades to be maintained is one option. Another possibility, that I don't think I've ever seen in use, would be a slightly smaller fan with a fixed set of stator blades around the periphery to accept the radial flow and direct that to the exit side? Those would be within the same plane as the rotor, with a diaphragm at the inlet side to block reverse flow. Having the outer static blades rather than the normal smooth duct should also interfere with the air in the rotor "spinning" and increase the axial pressure there? I've too many other projects on to take part, but something for other designers to try??

[@kurtgepner9329]

I think the flow-test is still relevant, and I would like to see it as well. The reason is that the speed at which you carry away heat is a function of its cooling capacity. I agree that static pressure is a measure of the airflow’s ability to overcome obstacles, such as cooling-fins, but discarding that heat is part of the equation. #1 Speed after pressure. #2 Pressure #3 Quietness *Note: Quietness is relative. Some people can’t hear certain frequencies. Others get annoyed by certain frequencies. I guess that’s why I would place it in 3rd. Perhaps a 3-part score would be called for. Category #1 is valued at a ratio of 1.5 Category #2 is valued at a ratio of 1 And Category #3 is valued at a ratio of 0.85 >> Arbitrary thoughts from a Fanboy.

[@IstasPumaNevada]

I don't think the anti-stall ring helped, but I could be completely wrong, and either way it's great to try new ideas out.

[@stevenclark2188]

Instead of the anti stall shroud bringing back smoke it looked like it created a boundary layer that kept the smoke in the center of the channel.

[@azriel5]

9:58 you were saying its 'hard to see if the ring did anything' as you pull the ring off, it would be easy to see if you just ran another test without the ring for the anti-stall and I would be curious of the results

[@LEF3133]

Anti stall design reminds me of the HKS T51R turbo.

[@iveeuwu]

i so hope my beast of a fan gets shown someday 😭

[@yunodiewtf]

I understood that reference Also you need to spend more time balancing the big boys because most seem to lose because of unbalanced vibrations

[@offic.dzanjo3048]

Your fans love Fans!!

[@philliplopez8745]

That " raxial fan " reminds me of the cooling fan on late model corvair engines .

[@travisg2303]

I would like to see a comparison of each of these with and without the shrouds. I would be interested to know what the boost in performance is for different shroud styles.

[@L3X369]

The Anti-Stall looks very awesome, we should throw a point in design.

[@wardus9415]

Would it make any sense to shoot the smoke down from the top in those side-on shots? It would really demonstrate the fans ability to pull in air.

[@sirmrmcjack2167]

have you tested the anti-stall without the yellow ring? that way you can easily tell if it makes a difference

[@michaelmc4025]

I'm curious how well the anti stall fan would perform when made out of one solid piece. It had a lot of wobble, which means it is not as efficient as it could be.

[@kleetus92]

I should probably know this, but what software are you using for the fan sound spectral analysis/ FFT stuff? I have some sounds I'm trying to decompose to get the specific notes out of them. Thank you to whoever can answer this!

[@saddle1940]

Something is pushing the smoke away from the edge of the anti-stall keeping the smoke in the centre path. Wonder if this could be taken further and directed back into the fan slightly instead of up and out of the intake? Has a 'Dyson' feel to it somehow.

[@sapieattersisingere3288]

I would like to see all the colleges start adding fans on here for you as a competition

[@BigReecey]

Never change the smoke test music 😊

[@Andy-df5fj]

In regards to The Slim being as light as possible to increase RPM, assuming the bearings are decent, weight only affects how long it it takes to spool up. Air resistance dictates the steady state RPM.

[@wargamingrefugee9065]

IIRC, the engines on the 707 jetliner had these added intake ports too. Everything old is new again. ;-P

[@float32]

The Reynolds numbers are ludicrously wrong at these speeds, though.

[@wargamingrefugee9065]

@@float32Thank you for introducing me to the concept of the Reynolds Number. I learned something new from you.

[@turbo_brian]

Turbochargers have a similar concept to improve performance at stall, it's referred to as a ported shroud.

[@mkruge9076]

Anti stall definitely was recirculating the air and had a noticeable vacuum pulling the smoke into the center. Maybe an a12x25 type would fare well