Wild 2-Stage 200mm Blower Fan Redefines Power | Fan Showdown S6E6

[@DeathToBreakfast10]

I'm for Group B: anything goes, however the "normal" fans, i.e. fans that fit into the constraints, should get their own category, because they could be used in a regular case.

[@VimCommando]

I 100% agree with this. Just like racing we need “Super Stock” 🚗 and “Unlimited” 🏎️ classes! 😎

[@hyperturbotechnomike]

Same here. Seeing a design that can actually fit into standard dimensions. But i'm okay with making the fan slightly thicker, since most PC cases have enough space to acommodate them. But i also like to see creativity.

[@haralds.5832]

This. It also tend to get more views for our major

[@deadly_dave]

100% Agree

[@Timmycoo]

@@VimCommando Great analogy. Totally agree.

[@Angel-dp9sl]

*Three Scoreboards:* 1. *Standard Class:* designs that traditionally stay inside the dimensions and housing, like the A12x25 fan. 2. *Extended Class:* designs that only protrude forwards from the housing without being bigger in diameter than it. 3. *Unlimited Class:* designs that do extend outside of the housing, anything goes as long as its powered by the housing's motor.

[@Goodgu3963]

I really like having 2 classes, and I think each class should get their own scoreboard. That being said depending on time required it might be worth it to just merge classes 1 and 2, with a simple rule like no more than 1/4" or 1/2" beyond the frame. Or even just have classes 1 and 3. Either way I think separating their score boards and ranking would make it a lot more "fair"

[@argmarwell]

when buying a computer case, you could have spots that the fans barely fit, and ones that have room for extension. the only time I can see room for the 'winner' was when there was room for a bigger fan.

[@ToraTiger78]

I came here to say the exact same thing.

[@notalostnumber8660]

3 classes are probably the best

[@martinshoosterman]

I disagree, I think the breakdown should be as follows 1. Standard class: fans that fit within the housing of the A12x25 2. Fans which can be printed in 1 piece 3. Anything goes

[@muumia4]

2 scoreboards. One for out of bounds and one for in bounds fans. Also all fans should get both static and dynamic airflow tests

[@flekkzo]

This makes the most sense. One you could put in a case and use it, the other is “how far could we take it”. Both are fun imho.

[@rjmcclellan8847]

i agree with this idea the most aswell

[@TheActionBastard]

3 boards! 1 for each and a "everybody FFA" board... the FFA board is just for kicks and giggles.

[@tmi1234567]

Maybe also show them together.

[@HappyJackington]

Was coming down to say exactly this. Take a page from speedrunners here, like how they have glitchless and any% speedruns do the same thing here, anything goes and only fans. Also, if you goes with the two scoreboards, please title the purist board "Only Fans". It would be really funny.

[@gabrielhacecosas]

I'm glad you put my crazy design in your video. I was very excited, and even more so when I saw that it worked very well. Please, do a test covering all the holes maybe it will reach 10 mmh2o 😁, you can use duct tape or hot glue that can be softened with a hairdryer to dismantle it without having to leave it stuck to the fan.

[@MichaelBarkleyMusic]

Excellent design. Regarding hot glue; isopropyl alcohol will break the chemical bond with the surface. I treat hot glue as a temporary glue now as it is so easily removed with IPA. Tecbond 261 works very well with PLA (best I have tried) and removes fairly easily with IPA. For all the cost of a fan, I'd rather your design assembled with CA as you suggested - the joint will maintain better geometry due to the thin glue layer.

[@ryanlandry8214]

Good job! 👍

[@TheRattleSnake3145]

I doubt he will unless more mention it. He didn't with the wonder and that tested higher when I tested it.

[@TheRattleSnake3145]

Good job on the design BTW.

[@mewintle]

If the design had snap tabs and a mated bezel, maybe even an o-ring, I think it would be even better. Amazing results. Patent it right away. Then call NASA and some commercial HVAC manufacturers.

[@DasJev]

I'm kinda suprised this channel is still alive, in a good way, it was niche and now the quality is even better and it's even more enjoyable to watt. Kudos to you and the community for improving and sustaining this series

[@lobstermendez]

I think 3 classes are needed. 1. A design that fits within the space of the original fan. 2. Has a limited and set size that extends from the face of the fan housing. 3. No rules chaos.

[@PandorasFolly]

Reasonable

[@GunAinmNoAodann]

I am blown away that even with the big compressor taken off, it still would have hit second place. I'm curious if the designer did any iterative simulation testing to see if there could be a more ideal ratio of sizes between the big and small compressors.

[@Blackwing2345635]

IIRC this is how two-stage usually works - the first one compresses less, but it sort of "conditions" the flow before the second stage

[@fishyerik]

What surprised me most about that was the small difference the big wheel made. The big wheel and channel between the stages probably slowed down the RPM much more than necessary for the added pressure, mainly due to the narrow channels for the air.

[@GunAinmNoAodann]

@@fishyerik With something like this, you're running afoul mostly of our collective lack of understanding of how fluid dynamics works. Don't get me wrong, we do know a lot, but there's still a lot of unanswered scientific questions (e.g. Navier-Stokes solutions, turbulence). Not saying you're saying anything wrong here, just saying there's a lot of unknowns still. For my part, I think the purpose the larger compressor serves is to smooth out possible turbulences/vortices before they happen at or in front of the intake to the smaller one, as they can function like friction and take away energy that would otherwise carry the air through. That's part of why I was wondering about iterative simulations of different size ratios to possibly optimize that flow.

[@brianorca]

I think the problem is the back side of the big compressor creates a "Tesla turbine" which is actually working against the flow direction. If the flow was guided by a non moving channel back to the center of the next stage, it might work better.

[@gabrielhacecosas]

I didn't do any tests, I just went into fusion 360 and did the best I could, I was surprised how well the small compressor worked. I think the big compressor doesn't have much effect because they have a lot of cracks where the air leaks out, I hope he can do another test covering the cracks with tape or something.

[@oljobo]

The stupid thing about premieres, is that A: video is not there when I get notification, and B: when video is there, I am not notified, so I miss the video

[@mdharvey1985]

@oljobo, this is your notification for the video

[@Mis73rRand0m]

Also I usually wait until after anyways because they re set my progress when they end.

[@Argosh]

Yeah, that there... I'd have no problem with getting a premiere notification if it wasn't utterly useless... What am I supposed to do? Wait there with baited breath for however long until the video actually starts?

[@pastaalalamborghini]

Premiers are dumb in general... It's a freaking KZbin video, the hubris! I also agree with OPs point

[@856Dropout]

I hate premiers

[@AlexandreLollini]

CFM is one thing, static pressure is another, but static pressure does not mean moving air which will cool something. Ultimately it is air mass moved per unit of time that will cool something. The next season should be either : a requirement of static pressure and see the most CFM, or a requirement of CFM and see the one with more static pressure. The NEEDED static pressure is not much since radiators are mostly free flowing, so measure air resistance of the intended radiator, then place a hard line of minimum static pressure required, then do a chart of those who met the static pressure AND order them by CFM. and if you like more rules, add a size limit. Fans can be pushing or pulling so the side facing the radiator must be possible to attach to it.

[@jamesirmiger3120]

I have to agree whole-heartedly. This entire season is a bit ridiculous as the best "fan" for pushing into a closed tube is essentially a compressor pump. Hook the A12 up to a diaphragm pump, seal the edges, and you've got an instant winner. This isn't reflective of the requirements for cooling a computer, which is really what we came here for. Love the videos, but it kinda went into the weeds fast

[@bernaue4505]

There shouldn't be any CFM or Pressure requirement, take them all and test for both.

[@melmartinez7002]

Agree 100%. Air movement is the critical attribute. You can't transfer heat if you aren't moving it from one place to another.

[@robinsandeman-allen5128]

​@jamesirmiger3120, Exactly my thoughts as well. I was waiting for a other section of testing cfm, then when the video ended I thought "easy, just build a compressor rather than a fan", blowers are just centrifugal compressors. This is really only testing the most efficient compressor, and if there are no leaks in the static pressure test rig, then efficiency doesn't even matter, only the highest end result pressure, which could just be geared/leveraged until the material stress becomes the limit. For a fan test, at least measure pressure through a given orifice size, to get flow and pressure...

[@alphaforce6998]

Static pressure is always relevant when it comes to moving air through a tube, screen, filter, or other obstruction like a heatsink or radiator. There should be a balance between the two, such that the fan can produce enough static pressure to maintain a particular flow of air over the surfaces it needs to cool.

[@charonme]

yes this is the secret of creating static pressure: you don't have to move almost any air, just enough tiny amount at the start to pressurize the thing and then you have to keep it from escaping

[@Woodz_007]

THe Compressor type Big Boy Fan needs to be glued cuz i can see the smoke escaping from the cracks in the smoke test

[@GremlinSciences]

Or just more clamps, the issue might just be that it's being pinched closed at just 2 points. Being pinched like that might be causing a wider gap in the space between the clamps.

[@Sarcorco]

I think some heavy duty tape along the edges would do just fine for testing. Not a permanent solution, but good enough and won't need to break anything to disassemble.

[@Woodz_007]

@@GremlinSciences yeahhhhhh but still my guess is it can reach 9 points on the test or more if it dont leak

[@tin2001]

Seal it with some silicon. That way it can be stripped back off fairly easily.

[@Man-EatingMushroom]

Doesn’t he say that in the video when talking about it just past midway..?

[@1nicube]

mechanical engineer here: 9:30 its quiet because you dont have any resonance. The curve is flat all across. Also, 47dB is half the sound energy than 50dB. Because dB measurment are logarithmic, its not a linear scale. i kept thing simple for everyone to understand*

[@BionicBurke]

Yep, every 3dB is a doubling of sound pressure... though, most people don't perceive a doubling of volume until around ~10dB difference.

[@BJL2142]

ty

[@XionEternum]

@@BionicBurke This is because sound pressure does not equal sound volume. Volume is literally perception as it's a combination of sensory input and interpretation from the brain. The actual pressure variance may have doubled, but the ability to both sense and interpret that change is... muted. 🤣

[@dallynsr]

@@BionicBurke Very much agreed, and well said. It’s true the power requirement with every 3db doubles, 3db is also the minimum level of perception that it’s louder. Hardly a big increase if it’s barely noticeable, but it’s 1000 watts if it was 500 before. 3db. My live audio experience has been about 10db is twice as loud, but more like 8db. Say 100dba vs 108dba, that’s a huge difference.

[@llMarvelous]

Perception depends on frequency as well, our sensitivity to different frequencies is different Also different frequencies propagate differently trough the medium, case dumping the sound and so on Also also: two stage compressor against open blade design in air pressure competition, come on… ))

[@N0V-A42]

Make two groups. Group N: Must be able to be installed in a standard PC case with the fan shown at 2:30 being a good example. Group B: Anything goes.

[@sheepstardetail]

I would add that Group N should not exceed the sizing of the standard A12X25 fan. If you can't mount the fan against a radiator or heatsink in a pull configuration, it is in group B.

[@shaneeslick]

Yeah that's a Rally Good idea 🙃👎

[@sheepstardetail]

@@shaneeslick because what, pull configurations or bottom mounts don’t matter in today’s PC case market? Nearly every new case is using bottom intake, if the fan protrudes out, it can’t be mounted.

[@N0V-A42]

@@sheepstardetail That's fair. Perhaps there should be three groups. One for mountable in a push configuration, one for mounting in push or pull and the third is anything goes.

[@sheepstardetail]

@@N0V-A42 that would work! Ok major, get to work!

[@GottHoldNicetomeet]

Tbh the crazy out of size fans carry the show most of the time

[@sjoer]

Every time I watch your videos it makes me feel so much better for having fans in a pull configuration...

[@ekupka]

At this point the only way to be fair is to split them into different categories, maybe just smol vs big, or maybe more granular, like A) "blade only" within the frame, B) slight protrusion with height limit, and C) no rules

[@GeneralPurposeVehicl]

Open, Extended, Case

[@carriebrewer7747]

Maybe for a bit of flair, say stock, mod and pro mod like drag racing. With the parameters that ekupka stated.

[@SuperfluousIndividual]

I don't see why we can't have both. Fans that FIT the mold and PC cases should have their own list. It's interesting to see how they fare against fans currently in the market. Fans that DON'T FIT the mold where anything goes other than being powered solely by the motor don't really have any practical meaning other than bragging rights... but it's also cool to see how far these fans could technically go if the only thing holding them back was the fan motor.

[@patrickradcliffe3837]

1:37 Group: BOTH

[@jackykoning]

I like that you notified us about the upload as it reminded me to watch the video at a later time. Please do that every time :D

[@lennart637]

hey if you ever need to seal and glue some fan housing together, I recommend silicon caulk. It is strong enough to hild theses together, seals great and can be dissesambled with a razor blade ans some prying. It stays soft and flexible and is not expensive. Downside is the long curing time

[@tamnker8465]

Replying to this comment to boost it.

[@jercos]

Found this comment after making a similar one of my own, I gave the comments a quick search, but you left the "e" off silicone. 😅 Not that it's a big deal, most people are smarter than control-F, and know exactly what you mean.

[@VinayVarsani]

The way I see it is you have 2 categories: ones that fit within the boundaries of the a12x25 (including height), and then everything else... literally anything, as long as its powered by a12x25

[@malicious217]

Ok so the centrifugal madness.... Looking at it makes sense that it would be high pressure. Like the air behind it would just slow and steady build up. But what about CFM how does that look? Also WATER PUMPS!!!

[@masterofnonetech]

Group B - Anything GOES

[@Jay_the_Caffeinator]

Damn Skippy!!

[@gsus3918]

Car people know

[@LogicalQ]

BBS Turbofans?

[@cauemarchionattiausec1754]

group b is kinda hot

[@SaganTheKhajiit]

The more absurd the better!

[@KewneRain]

I love the "weird designs" category, the creativity and ingenuity is always fantastic

[@Daniel-hw3im]

7:53 YES it should be glued together, there is the highest presure in the case and kills the airflow completly without beeing sealed :)

[@imblackmagic1209]

go crazy with the designs, let the creativity go wild, you never know what will be unearthed from there

[@kylepower9770]

10/10 can't ask for better content than the fan showdown! (even if its just waiting for the episode to drop) I'm at the edge of my seat in anticipation!

[@valen961]

Maybe make 2 separate “tournaments “? On one side keep the “normal” fan designs like we have so far. And on the other, let the mad engineers go wild lol. That would be the best of both world and wouldn’t take that much extra work for you.

[@Xailow]

To answer your beginning question, there should be different categories for the 2. If it expects expands beyond the frame and needs additional shrouding parts etc, it's gets compared to similar designs. If it stays roughly within the frame and doesn't need much extra in terms of extra parts, then it gets compared to that style fans and the original

[@Sotanaht01]

Different categories makes sense. Personally I'd be more flexible with the power rule and less with the form factor. The important thing in my mind is creating a fan that could be adapted to work inside a normal-ish PC. There's relatively little room there for different shapes, but changing the motor or increasing the voltage is something that could be done quite simply.

[@jakubjakubowski944]

What I really miss are the old cooling performance tests. Fans are complex-static pressure and airflow alone don’t capture the full picture. Moreover, it's difficult to create a definitive ranking of "good PC fans" based solely on these two factors. High airflow with zero pressure is just as ineffective as high pressure with no airflow. The old tests, which measured CPU cooling performance, were excellent because they reflected real-world scenarios. However, I understand that running such tests for each fan is time-consuming. A potential compromise could be designing a PCB with a power resistor cooled by a PC fan, aiming to maintain a temperature of 80°C and measuring the wattage required. Each test would take only a few minutes and closely simulate real-world conditions. I’d be happy to help design and manufacture the board. This approach could be a fantastic feature for the next season.

[@imonfyre]

Anything goes!!!! It's fun to see all the wacky designs, and the iterations on the wacky designs that manage to actually do something

[@spyrolover24]

Group B anything goes. I love seeing the crazy fans people make. Too many guidelines limit creativity.

[@glabifrons]

Yes, the only thing that should be added is a checkbox column to the spreadsheet to indicate whether the design fits within the stock dimensions or not... let them compete against each-other, and still be able to tell at a glance what the best one is of either category (as well as compare them against each-other).

[@iansabrewolfe]

What about having divisions? Have a Limited Division that requires the design stay within the frame, and then have an Open Division were anything goes, so long as it is powered by the A12x25 motor.

[@christophermcdonald5578]

I'm impressed by how the Centrifuge Madness was able to beat the WFDU in both static pressure and rpm. Nice job👍

[@justsomedude7874]

would be even better if it was properly sealed, quite visibly letting smoke escape during the test

[@stur448]

I don’t know which group is which but it doesn’t matter. Just keep makin’ vids man. I love this stuff. Maybe alternate seasons? Or a “trim and fit” class as well as a “anything goes” class? Idc, I want it all

[@JazzbLu]

I am in group B and the centrifugal fan is bomb! The fact that Gabriel made it easy to spin and so much diameter is why it is in first. Great job!

[@TechAmalgamator]

☑ Group B 1000%. I'm here for all the Creativity!

[@Tuhar]

Now just design a hermetically sealed case with a bunch of high static pressure fans forcing air in at one end, and radiators with dense fin stacks on the opposite exit. Will we see better than traditional cooling? (Make this season 7!)

[@I0NE007]

We need two parallel shows: one with the limits of "fan must stay within the housing frame" and another where "as long as it prints, it's fair game."

[@caztroll]

I love the wild wacky stuff. Keep it up! In reality for my home PC, quietness is one of the biggest factors. I work in comms rooms and server farms all day. Nice to get home to a quiet PC

[@erezra]

How about two classes? A "stock" class for the fan in the frame and a "modified" class where...

[@agoatmannameddesire8856]

Yep, this! Maybe stock has to fit within the dimensions of the frame at all angles? Maybe a super strict interpretation would say it has to be within a certain weight range of the original, too. But maybe that slope gets too slippery and we start talking about current draw by the motor.

[@Lingon_]

could be nice to restrict the x and y dimensions to that of the a12x25 but allow fans that are deeper. Would also be nice to come back to radiators and actual stress tests, i feel like that gives a better performance metric.

[@frankdobs]

Smart

[@treazure]

There should be 2 leaderboards. Group N & Group B. I'd love to see the crazy ideas, but also want to see the best of the best with a fan I could possibly fit in a PC.

[@TomBoulevard_]

I agree with this 100% This is was the spirit of the first showdowns. I love to goofy stuff, but I also want to know what fin design is the one to rule them all.

[@TremereTT]

Or even better, the test schould envolve a prettymuch standard bigtower, and if you have a big fan you can moddel the fan as a sidepannel, frontpannel, toppannel...&c. This big tower should be a popular model that has all kinds of fastswapable pannels...

[@BRUXXUS]

I love both camps. Just not really fair to have them compete head to head.

[@TheCannonFather]

Don't limit the creativity! It's what I come back to see!

[@TKSubDude]

Static pressure is good and all but volume of air is also highly important. Moving a large volume of air over cooling fins of a radiator is what you really want.

[@SilvaDreams]

That is why static pressure is important for radiators because the fins cause lots of back pressure and there is a point where moving air faster actually works against your cooling as it doesn't have enough time to transfer the thermal energy. It's the same reason why you want to pump more water volume wise and not velocity wise with a water cooling system.

[@lasskinn474]

@@SilvaDreams "our cooling as it doesn't have enough time to transfer the thermal energy. " the larger the delta t (the more air goes through) the better the heat transfer off the radiator is. you don't want "slower speed so the air has time to get hot" or anything like that. the static pressure just helps in getting the air through the radiator, more air (and faster and that also meaning faster). the "too much velocity" is an old wives tale from car guys who had some problem or another in their loops where a restrictor helped with more even water movement through the block, it does not help the overall energy transfer through the system to slow down the medium(shown by mathematics, physics, practical models), the cooler the air that's touching the radiator the faster the heat is moving to the air at that spot (anyway the old wives tale car guys who think it applies for fluids don't think it applies for gasses anyhow so they'll happily add more fan, when it doesn't really apply to either) if you had high pressure fan you could stick more fins on the radiator, so it's all just a balancing act with the space you got and power use and noise you can deal with. 20 watt 40mm deltas are pretty wicked.

[@gabrielhacecosas]

@@lasskinn474 I think this contest has long since ceased to be focused on cooling computers, only on absurd tests. And I like it, sometimes you have to optimize the air speed, sometimes the flow, sometimes the pressure without any flow at all... it's fun.

[@kirknelson156]

i'd watch it except that 3 hours from now is after midnight here, but i'll catch it in the morning ;-)

[@Koko-sn9in]

How about we make 2 groups, Group B for anything goes and Groupe N for the normal fan designs

[@ElementCu]

I vote for group names: vanilla and schpicy lol

[@iwebChristophe]

SHOULD BE ANYTHING GO !!! Love the Fan showdown series. Thanks !

[@navtheartist]

I believe anything should go, it really brings interest in creative ideas and new inventions. The normal fit can still contest the leader board to see how well they place again previous designs.

[@Stxckman]

Do 2 episodes with all of the previous highest scoring fans, split into 2 categories. 1. Fans that fit inside the frame. and 2. Fans that dont. But back to the basics of cooling capability

[@MrDowntemp0]

I like both camps. And I think that the chance we're going to see anything remarkable from camp A is pretty low. The people that sell these fans have certanily optimized their designs already, but still you get a lot of creative submissions. Camp B is more entertaining and exciting. I think you should accept fans from both camps BUT I think they should be in separate classes or categories. They shouldn't be competing against each other. That's kinda unfair. Regarding the centerfuge madness. It's possible there's some leaks. You should make a separate video to make sure there aren't. But really I just want the separate video so we can watch you SMASH IT!

[@mobiobione]

At higher pressures I've seen air leaking out around where the wires go through the frame, and a difference in pressure when I taped the seams too, so glueing might make a difference.

[@MrDowntemp0]

@@mobiobione Yeah, you can only expect so much of a seal with 3D printed parts literally clamped together. Especially when there aren't any features in the geometry to make sure they're paired up nice and tight.

[@mobiobione]

@@MrDowntemp0 I was thinking about huge screw threads, 200x1.75mm or something

[@radry100]

Have mercy on your european viewers. Release it right now.

[@Forgetthereality]

2 separate scoreboards I love seeing the wild creations I want to see how well we can optimize a fan design.

[@HazewinDog]

I think it's great to have the all out experimentation and I wouldn't want to stop that, but I think it would be great to occasionally have a season where it all can be put to practice in a design that does fit within the dimensions.

[@zerri08]

I think any design counts, we need creativity too!

[@untitled8027]

anything goes!

[@masterofnonetech]

Glue it together. We can see the gaps that will leak.

[@maduyn]

He could tape it once the clamps are on for something that can be removed but gets its peaked performance

[@drewdane40]

​@@maduyn I was watching this wondering if he was aware that tape is a thing.

[@permanentground]

Yeah, you can see air escaping in the smoke test, it's gotta be leaking even more when actually pushing against a pressure gradient

[@shvnrt]

Amazing episode! As others said, it's great to see those weird experimental fans, but would be nice to even have a checkmark in the ranking list for "it's stays within the Noctua frame", or "it's a superfan xD"

[@danielcameron9857]

Nice to see both... but like you, I love the wild designs the most.

[@BeefIngot]

I like both categories. Variety is nice but it's also cool to see competition within realistic parameters.

[@NateDulcimer]

I like how it currently is, because we get a good combination of both groups. I wouldn’t mind either two scoreboards or maybe an extra column in the scoreboard that indicates if it fits within certain constraints.

[@BennettBeach]

I am certainly on board with the split leaderboards, I lean to group N because I love the feelgood story of the guy who's design was picked up by a major fan developer a few seasons ago.

[@fireblow44]

The moment I saw that frisbee of a fan I knew it would move some major air. It just looks like it's employing proper engineering principles for air compression and the large flat disc creates that pressure seal that all the 3d printed "classical turbochager" designs lack due to the high presicion manufacturing requirements.

[@SlowerIsFaster139]

I never get tired of the tune during the smoke show.

[@col.caspermcgoldenshower4512]

Build the craziest fans you want they tend to look cool and pretty wild that's why I watch the fan showdown

[@Audiwithaturbski]

What if you had 2 different fan classes? The standard (group A) rules and stuff and then the outlaw class (group B) that has only the one rule. It must be powered by the A12x25.!!!

[@hiddenloaf2302]

I definitely understand both groups of thought. I'm personally on the side of having an open class for anything that doesn't stay within the frame, and a closed class for more traditional designs.

[@xxlhawkeyelxx7327]

I can't believe it's made it to season 6, I remember when you first started this, crazy how it slipped away from me

[@Scott_C]

OH AND HECK YEAH we want to see the glued fan just to see how it affects the performance. I could see some smoke leaks on the test.

[@industrialvectors]

I love both types of fans. I also wouldn't mind a separate ranking for fans that fit inside the frame. Those are the ones that would be practical.

[@jeroenvanos9653]

I'm in both groups. I like the creativity when there are no rules, but I also like the search for perfection when it needs to be like a "normal" fan

[@MD_Builds]

It really needs to be glued together as those seems need to be sealed for its true performance to be measured.

[@MichaelSmith-us9ch]

If it blows air - it's a fan. If it looks good too... Funky designs are a plus! Thank you .........

[@NerdyTheologian]

I kinda like both. I like the idea of having alternating seasons: one mainly featuring weird designs and one mainly featuring designs that fit in the A12X25 frame (i.e. stuff that could fit in a standard computer case).

[@chekote]

The editing and memes on this one are hilarious 🤣

[@Turbolious]

Haha nice, you made me check my phone when you said Group B. That exact compressor stall/blowoff sound is my notification sound on my phone...

[@jeremyarmstrong7857]

I like to imagine you chugging on a vape behind the camera during this part:) 8:29

[@ArabianShark]

7:00 I don't think the Center Madness got a fair shake; the top disc was clearly slightly off centre; you could tell there was some wobble on the edge when it spun slowly, and surely that had an effect on the balance and performance of the fan.

[@vie_baobab]

I like seeing the "anything goes" designs, but I actually have use for the fan designs that fit within the frame. So please keep the showdown open to everything and people can judge the results however they wish.

[@cocon16_PW]

I think the current fan format works great. Crazy contraptions wouldn't be that exciting if every fan would be like that. You balance it in the videos pretty well. Excited for the blow season finale. For the next season - what do you think about the benchmark in the form of dynamic airflow testing but through a radiator? Seems the most accurate to the real use in pc.

[@Drak600rr]

Love the no hold bar approach 🎉

[@David_Mash]

Both camps are entertaining and have valid arguments. Maybe run two classes of competition simultaneously?

[@michaelkafoure786]

You should probably be checking output temperature to see if the temp is changing at all. Compounding fans like that may increase air flow. The same thing affects compound turbo charging for example. It makes the chargers more efficient and keeps them in their sweet spot but usually drives the heat way up between stages.

[@research903]

Go for it. It's called INNOVATION!!

[@Quayleman]

More more more!!! Idk what your channel is other wise or than your fan builds

[@rsrob5617]

Group B, let the wildest and most innovative things come!

[@eliyahzayin5469]

Man, this makes me feel like I should put more love into my submission. In terms of 'normal' vs 'augmented' fans, one solution might be a secondary rating that's normalized by weight. This would allow all the fans to compete on the same score board but would help prevent oversized designs dominate everything else. On the other hand this could lead to people making thinner and thinner designs which would also ruin the fun over time... Really it might just be a case of rating fans on uniqueness.

[@HasanBabasi]

BOTH also I’m so happy to see that we will be getting more fan showdowns.

[@isays]

Every episode you have 4 fans: 1. a normal fan that you could actually use in a normal PC build 2. a exotic fan, breaking some rules but you might be able to build a PC around it 3. no holds bared, no rules, anything goes, crazy fan 4. dealers choice, you pick another fan that seems interesting from any of the categories

[@aquilux-vids]

One thing to note, the 200mm was leaking so it did not achieve it's max static pressure. One suggestion I have for designs that need to be glued is to use a really thin bead of silicone caulk. It works well to seal and glue parts together but it's bond is weak enough (if you don't attach too much surface area together) that you can usually split the parts with a putty knife and some prying, maybe assisted with a thin wire or dental floss to cut the silicone.

[@captainobvious9188]

There are axial and centrifugal fans, and there are those that are in between called mixed flow. The "Turbo Static" is mixed flow. The "Jet Impeller" is centrifugal but without a real diffuser, so it is probably more like a mixed flow too.

[@boarder6246]

Creativity shouldn’t be limited. Let the fans blow!

[@guy_autordie]

Thanks for the Group N and group B ref. Loved that. Both are good. But to break the limit, you need to ignore the rules. then maybe you can put it back within the rules.

[@MrThemeatshield]

I'm not dissing the work in camp 1. Having it fit in a pc case is awesome... but camp 2 is where i live

[@NicB-Creations]

I like both, fans that fit in the frame as well as the anything goes type.

[@rikschaaf]

It would be cool to see what people can come up with for a triple fan radiator setup. You'd still be able to do anything to the fan shape, so long as the fan hubs can be attached to the radiator. You are allowed to go down to 2 or even 1 fan to fit your contraption, but obviously that would impact your radiator performance.

[@Blue.4D2]

for the giant compressor, just tape around the edges to prevent leakage and pressure loss! ⭐🙂👍

[@SaccoBelmonte]

Anything goes. Definitely Group B. Discovery is the key. - Totally surprised by the centrifugue madness. The smoke test didn't show a strong flow on the back, yet it did awesome. I guess once you seal the back against a radiator it shows its power.

[@martinm9877]

I am for no rules group. It is fun to see what people can come up with while thinking outside the box.

[@carledwards9477]

Let fans be themselves! Seriously, if it can be powered by the motor, it's a fan.