Some of the Most Interesting Designs YET! | Fan Show Down Episode 6

[@MajorHardware]

My B, i over did it on the text sound effect, it shall be SMITED from my next video.

[@VanerDeeds]

Came here to ask this. Freaks my dog out, and the Fiancé told me if I wanted to keep watching I had to leave the bed 🤣

[@cazandmal]

Didn't bug me but clearly I'm the minority

[@phizc]

Can you print TPU? Asking for a friend... 😏

[@deminybs]

you could leave it. Just like cut the volume in half from what it is in this video lol

[@CyberMaster86]

i have an idea for a design, i think you know what a bladeless fan is correct? why not make a "fanless" balde design? i think it might actualy suprize us.

[@NeverlostatBSgaming]

“Any machine is a smoke machine if you use it wrong it enough” -Abe Lincoln

[@dimacherepovskyi8600]

What about a hammer?

[@WIProgress]

@@dimacherepovskyi8600 Strike burning coals EZ

[@KroyHD]

@@dimacherepovskyi8600 a hammer is not really a machine is it?

[@samiraperi467]

@@KroyHD Well it has a lever in it, so technically it might be.

[@Longus07]

@@samiraperi467 hammer has a handle and a head.....

[@pseudonymity0000]

Fun fact: The boat prop would have been the quietest because they are designed to minimize turbulence on the blades. This is because boats need to also factor in reducing extreme flow conditions at the tips. This is to avoid water cavitation chipping away at the blades edge.

[@Zeldatp151]

it also probably would work better pulling air through the rad instead of pushing it though, the blades on props are designed for spinning the other way, as they would had it been propelling a ship.

[@callsignapollo_]

Came here just to say the same thing. I can also see the reasoning behind many designs having the outer ring, both for blade stability and reducing/removing turbulence at the blade tips. Unfortunately though it seems like many of these designs have actually had the "shield" in the wrong orientation. Id be interested to see another boat prop thats pulling air through and has a proper jet cone assembly, though that may be too thrust focused

[@xSandamx]

@@callsignapollo_ i think outer ring actually hurts performance by restricting the airflow into smaller circle than the fan would allow. radiator is bigger than the hole anyway. so i think the most heat stays in the corners and directing the flow outside would gain the most performance. would be interesting to see thermal image of radiator...

[@InterlacedTech]

That's too many physics I prefer FFDP (boat propeller fan) Those fan blades are designed to pull air so they do very good work But industrial ones have more air flow than the resin ones (printing isn't good as metal because it's not smooth and sometimes it doesn't give the right turbulence of the design) but good work even if they were prototypes I just don't care about the noise it produces all i care about is air flow and cooling

[@bagochips834]

@@Zeldatp151 yeah, the fans in computers are used as impellers not propellers, so a propeller shape would have to spin the opposite direction to work.

[@moohooman]

Some guy is out there who wants a nautical-themed computer and will one day come across this video and have a mind-blowing epiphany.

[@notserpmale03]

bro, just you wait till he figures out submerged oil pcs are a thing.

[@joeyfredrick3493]

Not to mention electronic water proofing spray where you can submurge the entire electronic with exposed wires~

[@notserpmale03]

Joey Fredrick ooo that’s wild but to be frank that would terrify me

[@thaferg6969]

And the one who wants an aircraft tinnitus has the turbofan between 42 and 43 tempo rhythm tinnitus

[@joeyfredrick3493]

@@notserpmale03 Right? Back when I was using it I was so unsettled but the fact it works opens up so much~ Though I still have concerns about impurities in water eroding the coating >..>

[@bluephreakr]

If the beeping noise was replaced with something a bit more lower-pitch and dull sounding, with a faster draw it would be more appealing as a noise to use when displaying fan credentials.

[@theshotdoctor4602]

I agree I was not a fan of the noises lol

[@fabiospzn]

I almost starter ripping my bedroom apart trying to find where the sound was from.

[@amicloud_yt]

I was going to say the same thing! I have been watching all of these fan reviews and the noise gets on my nerves every time

[@635574]

How about smacking a mechanical keyboard with your fists and looping it, also make the text faster.

[@kennethsrensen7706]

Ha Ha ha ,,,,, Yeah I started trouble shooting my external audio system desperately to find the cause of that noise when realiced it was from the video.... Damn ... I actually had a noise that sounded a bit like this and it was caused by noise from a drive that entered the audio cables..... Phew.... I can relax and go back to my coffe and the video...... Ha ha so typically....

[@sebastiandisend3818]

Your content is majorly underrated

[@theodorefredrick7058]

@Jared Sheehan he said majorly

[@Omlet221]

Yeah this is very entertaining 80k subs isn’t enough

[@youngbrokenboy9109]

It's not wanted but watched by the people in need

[@dawson289]

Honestly i thought he was a big channel when I first found him. He still doing really well tho js

[@ryanrohauer5940]

agree

[@nickopedia5669]

The boat propeller would be cool in a mineral-oil submerged PC

[@karlkarlng]

More like a kort nozzle

[@1222dss]

the most unique pc related content. I like the enthusiasm this dude has

[@therealktm5615]

Kotory this is pc related?!? I just wanted to see what fan was the best

[@1222dss]

@@therealktm5615 of course it is. He's testing all these weird stuff on real CPU with real loop

[@SpoopyGamer]

These fan design videos are the best . One day we gonna accidently stumble on a crazy efficient fan by accident and it'll become industry standard XD

[@jacobrzeszewski6527]

Or he’ll have men in black suits come in and shoot him, then proceed to raid all his fan blades. Probably sent by Gooner Master.

[@JasonWW2000]

There are actually companies that do much more extensive testing in fan designs. We are not going to stumble onto anything better then what already exists.

[@chucklesdeclown8819]

i mean there was one that came close to the noctua so maybe.

[@ETXAlienRobot201]

@@JasonWW2000 they're most likely testing the same design and trying to hyper-optimize it, eventually that design will reach its limits. more than likely, it's getting very close to that point already. for all those extensive tests, that's a lot of effort focused into one design for most likely negligible gains. in the off chance a better design, or one with more potential to be improved on should appear, they're missing-out on it in testing their one design to levels of insanity. also consider because these people are free to make anything, there's the chance this process returns a design that the standard way of doing things never actually reached/considered. this is fairly common, the "industry standard" methods/tools are not always the best. at some point, business decisions and/or laziness towards real innovation take-over and all bets are off. this is why open source software is so popular, and there are some decent open-source [or at least cheap/free] programs that if adopted more widely could give adobe/autodesk/microsoft/etc a run for their money. because the fan showdown is more or less just randomly producing designs that are so far detached from whatever is "best practice", it statistically has higher odds of just stumbling-upon something, which historically how a lot of innovation takes-place, anyways. also, materials and manufacturing sciences has a role to play. these designs are not being manufactured through the best means possible, there are multiple flaws with 3D-printing something that needs to meet fairly rigorous performance standards as a cooling fan. at least one design has come close, so what if it were to be manufactured with a less prototype-quality process? even a better 3D printer, like resin printers. it's possible. those companies may have better equipment, actually 'trained/qualified' engineers [bear in mind this concept in itself is technically flawed as training cannot produce experience, while experience can produce training] , better processes, and better materials. but they're most likely only focusing on designs that worked, and those designs are based on what's been observed as working for years/decades/etc... they're just one of the possible evolutionary paths of fan design. just the lack of better materials is enough, as the fans tested in these videos are not at the peak performance for that design, you can SEE the flaws 3D-printing them creates. and not saying by any means it will happen. most likely will not, but the results are already more impressive than what a bunch of hobbyists should have been expected to achieve.

[@MrOsmodeus]

@@JasonWW2000 they will be testing fan designs to a certain spec. anyone who shows up at work one day and designs something like the tulip is clearing their desk out for wasting company time and resources. these crazy designs wont stack, cant be mounted beside each other, they wouldn't be injection mouldable. these production and form factor limitations would stop most of these designs ever even being considered. in much the same way that store bought tomatoes are not sold based on taste but rather on how transportable they are and how readily they can be ripened after being picked. big business cares little for giving consumers the best experience only tuning the output for the maximum delta of cost to produce and cost to sell

[@VTOLfreak]

The slow-motion shots are amazing...

[@fillmainlol5973]

My only suggestion, dBA doesn’t tell the whole story frequency and spectrum is super important in what is considered louder or more annoying

[@sahilpatel3993]

This. High pitch humming can be annoying no matter how quite or loud it is. In the video, Acquaintance 34 was louder but frequency was low and felt more quite then compare to The Boat Propeller

[@observingrogue7652]

@@sahilpatel3993 I'm looking for ways, to not only make fan sound lower pitch, but electric motor sound lower pitch as well. Of course, performance is paramount, followed by stealth, but any noise made, I want to be pleasant, because I am going to be hearing it, a lot. I'm using what I learn from this design showdown, to make radiator fans for a high performance, homemade electric motorcycle. And I like the natural electrical sounds of a motor, so I will pipe a sound tube, from the motor, to where my head is at full tuck.

[@scrambledmandible]

@@observingrogue7652 A bit late, but best of luck!

[@observingrogue7652]

@@scrambledmandible Thank you, Sir or ma'am.

[@bismuth7730]

Fan showdown is probably my favorite currently active show on youtube. I love seeing crazy designs put to test. Who could have guessed the past episodes winner would perform so well??

[@Mr.Paulo.]

I wonder how the cage would perform if blowing air, maybe try a remix with inverse blades?

[@timh.6872]

Trying to push air inwards with a squirrel cage doesn't work well. It takes advantage of centrifugal acceleration to move air, so it'll want to push air away from the axis of rotation. Given the geometery of the setup, that means a pull instead of a push. A Tesla turbine approach would suffer from the same difficulties.

[@brocktechnology]

Squirrel cage blowers blow out no matter what shape the blades are, centrifugal effects dominate no matter what.

[@Tallnerdyguy]

They could, but would be an impeller and works better with liquids

[@benjaminrogers9848]

@@timh.6872 you my friend have taught me something

[@benjaminrogers9848]

@@brocktechnology this makes perfect sense but for some reason confused me so much 🤣

[@thegr8waffle445]

I've been following along since the first fan showdown. I'm really impressed with how your printing, testing methodology, and video production has improved over the course of the series thus far. Awesome work!

[@tullgutten]

The squirrel cage but mirrored should be tested. In automotive air conditioning blowers the "fan blades" is bending the oposite way of what you would think it should, so like it's spinning in reverse. But they also have a shroud to catch the air from the fan in a vortex kind

[@jackedup8790]

I was think something similar. Look at the housing for a furnace blower. I think the squirrel cage does better with a little resistance and direction

[@simont3686]

It is like that to convert more of the the "outwards motion" of the air into more "sideways velocity" which is actually the useful one for blowers. I think you know what I mean.

[@charetjc]

I did wonder if the squirrel cage was recirculating warm air through the radiator in this setup while the other fans tend to push air away. Would like to see if ducting on the squirrel cage improves its delta.

[@dreamcoyote]

Yep. As I recall (and I'm far from any kind of expert), squirrel cage fans are the best at keeping up air pressure. That could make it better than the others with the appropriate shroud.

[@JesusisJesus]

I reckon that the squirrel cage vortex one could be incredible if had some blades at the bottom to push the air out rather than just churn it up and throw it out the sides, I also think that I have no right to say it but I believe the vortex is designed to pull air into the vortex and push it out the back. I’d like to see it turned around and reverse the polarity on the motor to spin it clockwise.

[@ltcuddles685]

Oh man thank you for doing something about the print quality, looks so much better now.

[@jonmoses2230]

The quality of this series has already gone up so much. Can't wait for more episodes, definitely my favorite content on KZbin right now.

[@gigaherz_]

I got your episode 5 recommended on my home page, and I just finished watching the entire playlist. Some interesting designs. All the "pull" fans you have tested in these videos, I'd really love to have seen them mirrored and printed in push mode to see how they compare. So far as I understand pushing air (positive pressure) is more efficient because there's more air density rushing through the radiator.

[@Hyde-Jahf]

That high pitched sound effect though. All 3 of my dogs now hate KZbin.

[@phugoidoscillations]

Thank you so much for the smoke equipment demo! Also really liked the slow-mo shots. The fan showdown is a great idea, always fun to watch.

[@timthompson4905]

I have come to look forward to these! Makes me wonder if you you make your own fan entirely. Print the fan and the housing, buy off the shelf motors.... you could have any size you wanted, quite a few colors to choose from... The custom / mod scene would eat that up. Great video. You'll hit 100k subs in no time, totally underrated channel imo.

[@callsignapollo_]

Why choose one color when you can make transparent blades and a housing with LEDs? Gamers love their LEDs.

[@adawg3032]

I’m watching a channel about fans and which is the best where the viewers submit designs to be 3D printed and benchmarks taken, and I love it more than I would have if someone just told me about it. Your content is great and crowdsourcing designs for competitions is the new thing, you are one of the pioneers. Keep it up

[@MajorHardware]

Thank you

[@TheChadOlson]

Defend us from text reveal/typing beeps. Unlike your fans, you just can't spin it positively.

[@MuitoDaora]

And do white text in a black background so we can read properly.

[@clarencedube4853]

I’m doing some testing with some fans I designed and I’m gonna send you te best one soon!

[@TestECull]

I wanna see the squirrel cage fan retested with some ductwork to help direct the exhaust air better. I think it's having a lot of recirculation issues.

[@cyclark8762]

I agree. All squirrel fans I've seen have a shroud around it and they move a lot of air. We have some fairly large ones on wind turbine generators for cooling.

[@t3hjnz]

The high-speed on the smoke is brilliant. Nicely done!

[@mmmark8737]

I really liked those fans. This was a good round of submissions.

[@curtisbarkes6271]

Love your stuff. Suggestions: get an anemometer. also you should think about building a box of known volume, and time how long it takes to pull all the smoke from the box. These two things will give you a known air speed and volume of air moved over a known time.

[@spark_max]

like your videos but please make that beeping noise when typing stop

[@jaalan7896]

I agree

[@luridftwgaming8983]

I think watching the “smoke” going through the radiator is satisfying.

[@BobWidlefish]

Nit: the sound effect during onscreen text writing is too high pitch if you have headphones. It makes my ears go “ouch.” Keep up the great work, cheers!

[@MrMcGreed]

Closing in on that 100k even more, looking forward to see it! And also, cool new effects on the smoke testing!

[@rafasilvaalex]

better quality for shore nice thing with the smore and the fans ;d~and the sound par too i think when you are say the temps you should put the delta of the top 5 small in a corner so we can compare to the leaderboard

[@nevill2947]

Your production quality noticeably goes up. Never stop doing your thing man.

[@jaalan7896]

Please remove the beeping from the text... Please!

[@maj429]

I like them 😂

[@darb77]

Nice too see different colors respecting the fans colors when printed in the grid.

[@CaveyMoth]

6:11 Poor Tide bottle finna get emphysema. Use the boat motor inside of a liquid loop instead of a pump!

[@webx135]

Tip about pushing vs pulling. Remember that the fan introduces turbulence to the air. When you push air through a radiator, you are trying to force turbulent air through a straight grid. When you pull air, it isn't very turbulent when it is static, and pulling it stretches out what turbulence is there. It doesn't become turbulent until AFTER it has gone through the radiator AND the fan, and thus can continue in its own direction. So always pull through a radiator or filter when possible. You'll generally get somewhat better results.

[@LoneWolf0648]

i have a feeling that cage fan was supposed to spin the other way also the beeping...

[@ETXAlienRobot201]

seems a few designs are that way, he really should specify in what direction they need to spin, or make the motor spin in reverse if it can

[@notstonks20]

@@ETXAlienRobot201 no need to spin the motor in reverse, just mirror/flip the model before slicing/printing

[@ETXAlienRobot201]

@@notstonks20 forgot about that...

[@HolgerNestmann]

Super fun series - thank you! If you dont do it already off screen, maybe you could add two little controls by retesting an existing fan and reprint that fan using the material of that round. That way you could rule out external factors for the turbulent air this time around.

[@Dia1Up]

I love the new format... However turn the volume down just a touch on the sound effects when the text comes up heh

[@TheLoneWorg]

These episodes bring joy to my life, thanks.

[@samgremli962]

Imagine he’s just trolling every body with the text beeps 😂😂

[@Kycirion]

Just raise the pitch a couple hertz each time until it people stop complaining.

[@BGNoice]

Loved the new presentation of fan leader board position!

[@DeliciousDeBlair]

"The Compressor" needs to be reversed and used as an EVACUATOR like the squirrel cage fan! ~( 'w')/

[@edwardnedharvey8019]

Exactly what I was going to say

[@Tdogg425]

Found the channel a few weeks ago. Love what you're doing. I get excited every time I see a new vid in my sub feed!

[@CynHicks]

I see a cylindrical fan, I haven't watched yet though, and that's something I've been very interested in. However, cylindrical fans don't work that way. It would need to be enclosed with air flow directed along the length. I'll see soon but I fully suspect it doesn't blow air in the correct direction.

[@GGCannon]

What software do you guys use to make the fans? And what are the most basic dimensions one needs to know to design one?

[@dustun9558]

These tide commercials are getting out of hand.

[@Jorporte]

Excellent fan montage! The high-speed video was really cool!

[@MrBubmer]

I might try and get rid of the text noise, or maybe change it to something else since the beeping is really bad

[@TheCrossx6]

I think that sloping the outter ring outwards lets the air fly out to the sides, because one it enters the fan it's like on a centrifuge, the more on the edge it is, the stronger the force outwards

[@PHUSII]

Can't wait for the one that wins the noctua fan. Or we die trying! Literally, off old age.

[@osmingutierrez5446]

Keep it up!! Your channel is really becoming one of my favorites and inspires me to conceptualize new fan designs; thanks a ton and keep it up, kudos(:

[@rathmere2398]

You Should try evaporative cooling with rubbing alcohol or another low boiling point liquid

[@archwaldo]

Vodka cooled PC

[@rathmere2398]

Deon Denis if it’s hot enough in a water cooling loop to catch fire there’s something else wrong

[@Vodnik110]

OK those slow-mo shots are killer, you also used a lot of light for it which is awesome, most people don't know you need a crap ton of light for slow motion shots

[@rasta77-x7o]

Everyone: Beeping sounds Me: What? Didn't hear a single beep all video?

[@Felix-gm9im]

You're probably going deaf soon

[@rasta77-x7o]

@@Felix-gm9im years in helicopters does that.

[@SurelyLightFoot]

Nethiuz construction work as well. I had replay video and really try to hear it.

[@Felix-gm9im]

@@rasta77-x7o I respect it

[@Fabelaz]

same for me. For some reason can't hear shit higher than 13 khz or so.

[@cryochaos259]

You have a good thing going here. The sound testing is great. If you are trying to make everything as "scientific" as possible (which i think you are). The smoke test is nice for air flow test, but we dont know the air flow output. Also they make "Smoke in a Can" if you end up wanting to be more precise. Good job over all.

[@JohnnyStashh]

Dude, I love your content but i feel like its just missing something.... Hint: Dog

[@nikofox8513]

PLANE BATTLE

[@Ricky_Camacho]

Great idea a for the smoke machine! You can probably also use a hose attached to the machine as well

[@deminybs]

Video just started already NOT digging the loud ear piercing sound effects for fan name/specs 😡

[@Omlet221]

What do you mean

[@deminybs]

@@Omlet221 did you watch the video???

[@2KDrop]

Mixup 221 They're talking about the "typing" noises.

[@anewstarttoabrokenlife8662]

I'm not trying to create an issue here but the case fan needs a retest. The reason why I suggest this is because they rely on compression at their outlet, which is why they're used as blowers. If you could create a housing that would allow you to use it as one I'm sure it would be about 40% more efficient.

[@Uranium337]

I could do without the text sound

[@DerrickRG]

Sounded fine to me.

[@sander282828]

what is volume to weight ratio on the 3d printed fan different filaments and the original fan blade? does heavier material lower the rpm and cause more vibrations?

[@cluelesssherlock2804]

Please don't use that tone with the text display, triggered my tinnitus

[@Daiceto]

You know that you can't "trigger" a tinnitus right?..

[@CaveyMoth]

@@Daiceto My tinnitus is very conditional. When there is noise entering my ear, it goes away. Very strange stuff.

[@daycred]

Great video! But I think you should revamp your testing setup. You could measure the airspeed with a sensor and use the hot side of a peltier cooler for your water cooling test. You would have 4 points to measure and I'm pretty sure you would get reliable Delta's even with heat fluctuation. The measure points would be: •Room temperature •Water temperature •Hot side of the element •Cool side of the element

[@no1bandfan]

"a Tide bottle." Me: gets triggered over the stupid Tide pod challenge.

[@Elfar]

Change in editing is awesome dude! Love those slow-mo shots!

[@BrendanZanitCoen]

the quality of prints look much better. this'll give the fan designs real chance!

[@erikaaron3257]

Curious what the inlet to outlet temp difference of the compressor fan is without the system on. Compressing air will cause the temp to rise, it probably isn't going to be a lot but I wonder if it is measurable.

[@TotoGeenen]

Video production quality was really good on this one ^^

[@catboygremlin]

the boat prop being held up by the rubber duck was a) genius and b) hilarious

[@roml1289]

The blade angle on "the fan" looks more airflow oriented than static pressure. It should work better as a case fan with a non restrictive grill but cannot push through obstacles.

[@sixstringstruggle6508]

I would love to see that squirrel cage fan run in the correct direction. Also I have a smoke machine that I have hooked my shop vac hose up to and it is a wonderful way to tame its output.

[@redsquirrelftw]

It's interesting as some of these really do look like they would work well and the results are always surprising. Shows how complex the engineering of a fan really is though. I was especially surprised by the squirrel cage one it just seemed like it could do so well.

[@DevDoesAThing]

Man the montage was probably the best I’ve seen on the channel man.

[@ronguin7062]

It seems some of these fan designs would benifit from some sort of enclosure around the fan blade for additional channeling.

[@jaytaylor6857]

Love the fan show, have you thought about printing in Abs and vapour smoothing them? Surely that would help in some small way on the FDM prints?

[@johnsherby9130]

I don’t know why but seeing the boat prop held up by a rubber ducky made me chuckle. Great video as always.

[@noobpro9759]

I call the caged fan a blower fan. Mainly because its the most common if not the only kind of fan that is used inside heating/AC units and those are called blower motors.

[@darnold1990]

I would love to see the squirrel cage fan done as a pusher and see if that does any different

[@netron66]

one of the reasons for the external ring is for structural purposes. the ring would provide a good support which would be reduce the bending moment by 4 times so you can thin out the blade

[@powersweilnau5510]

You should look at building a flow chamber to test pressure for these fan designs. I think it would really show the capabilities of each design. The FFDP, for example, may be a good static pressure fan (since a propeller is basically designed to create a positive pressure zone)

[@Sheamu5]

These larger designs with cones should take a note from the blower fan, and make a sperate piece mounted to the fan shroud. Reducing weight of the fan and hopefully turbulence

[@802Garage]

Wow the new slow motion montage was awesome! Really cool group of fans this time.

[@Aupexx]

Have you ever thought about testing a stock fan, but with different shroud configurations to see if it can be improved in that way? or to see if open is the best.

[@silentstrike123]

Love your content....one suggestion, perhaps fill a box with smoke with 1 hoke for a fan (covered until ready) and measure the time it takes to evacuate the box (I'm sure you would need an inlet air hole as well, but mainly a controlled environment on the cheap)

[@slap_my_hand]

Large spinning funnels generate a lot of turbulence. I'd love to see a design where a separate funnel is attached to the frame of the fan.

[@brickbrick2510]

The ring around the blades helps prevent turbulence and adds extra support

[@CausticLemons7]

This series has been so interesting I subscribed to make sure I don't miss anything.

[@dannhauvanderberg]

How many designs have you received from the beginning of the series? And when are you making them available for downloading?

[@AcidRP]

Just a heads up from someone who runs events/venues, if it's standard glycerin-based smoke machine, it will leave a gummy residue on everything it passes through, similar to nicotine. you can find water-based fluid or maybe switch to dry ice. Though the standard stuff is fine, but make sure to clean the fins out often :)

[@cyrilio]

Fan show down is my favorite tech show out there.

[@randymotter51]

The "boat prop" which in lesser known circles is referred to as the "duck hat".

[@riddle9064]

He stood the boat prop on a rubber duck and NOBODY IS TALKING ABOUT IT. You are now my favorite person in these comments

[@kellypophamjr5777]

They do make smoke pens as well. Mainly for finding drafts. Also hvac guy here. The squirrel cage is too long. Look into shallower design for higher rpm and without a cone. Although I'm sure they used the cone to reduce weight.

[@BRUXXUS]

I printed one of those giant turbofans a while back. Working on connecting it to a motor and setting it up as a dust extractor for my shop. lol

[@danieljones317]

In regards to the "squirrel cage" fan, the blades do seem to be backwards. However, I have worked on a lot of these that were made of metal as well as plastic, being a mechanic. Every last one seems to be running backwards. I have actually made them to run what seemed to be the "right way," and the efficiency goes down dramatically. Run the fan, and I think you'll be surprised at the airflow direction!

[@fumanseano2846]

Awesome vid as always. Really like the addition of slo-mo!

[@francisschweitzer8431]

I like the new montage approach... the video is smoother now. No futzing around... the opening smoke flow is nice.

[@anthonyfowler3069]

Have you tried a squirrel cage the way it is normally used? Usually they push air perpendicular to axis of rotation