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@kaiying74

6 ай бұрын

🤣

@MrMikevida

6 ай бұрын

Great channel. Terrible sponsor.

@foureye7058

6 ай бұрын

yikes dude

@Skinnamarink.

6 ай бұрын

Honestly, youre a pos for shilling raid.

@Skinnamarink.

6 ай бұрын

@@MrMikevida which in turn, makes the channel terrible.

The Whaleoid seems less like a toroidal blade, and more like a regular blade with the center cut out. I'd be interested to see how a design with the tubercles but no cutouts would compare.

@MrMartinSchou

6 ай бұрын

Yeah, I have a strong feeling that it's almost impossible to design a good toroidial blade without using fluid dynamic simulations and a lot of knowledge and experience in aerodynamics, which would explain why no KZreadrs have managed to make a good one.

@mogergog

6 ай бұрын

You are correct. The design was only inspired by the toroid solution. It was not intended to be a full toroid. The top and the lower part of the loop have a different angle of attack. I haven't pre-tested it. This was just an idea, but now it's got my attention. :D

@jasongreene303

6 ай бұрын

@@ImproveConditions If doing a true comparison over time, then the entire history would have to be thrown out since that would skew all of the new entries. Maybe a test to see how much it changes would be a good off season episode.

@Eidolon1andOnly

3 ай бұрын

Pretty sure he already did an episode comparing a resin print with a filament one. He aslo did one about using acetone or other means of smoothing out filament prints. There wasn't any significant improvement in either case if recall correctly.

The reason it's slightly worse to be pointy is that at re-entry velocities, you are beyond supersonic velocities and literally smashing the air apart as you hit it. Being "Rounder" or "Blunter" creates a sort of air dam in front of the object, pushing the air-smashing distance a bit further away, making things overall safer for the object. The downside is you end up with something like the Space Shuttle, which had an absolutely terrible glide slope due to all of the drag at supersonic and sub-sonic velocities. There's not much point talking about drag when you are hypersonic, because no matter what you do, it's going to be there in a very annoying amount.

@jblob5764

6 ай бұрын

Exactly, a blunt edge forms a cushion of air ahead of the leading edge. If you had a sharp edge that was making direct contact with hypersonic air the surface temperature would soar extremely fast well beyond the melting temperature of anything we would be using. The shuttle is a great example. It's a terrible "plane" because it lacks a lot of lift, but it has to be that shape to have any hope of surviving re-entry. Same reason the Soviet knockoff looked almost identical, you can't out design the laws of physics you just have to do the best you can with your materials

@wobblysauce

6 ай бұрын

The flying brick

@stumpy990

6 ай бұрын

Believe it or not a parabolic nose cone has a lower Cd than a "pointy" cone

@mariueg

6 ай бұрын

@@jblob5764 The Buran was very similar also because of "extensive espionage"

@szurketaltos2693

6 ай бұрын

So when is a pointy nose better and when is blunt better? My understanding of "normal" everyday aerodynamics is that the best profile is a teardrop, then points are common for high speed aircraft.

Pretty sure "Spoki" isn't referencing the word "spooky" but rather "spoke-y", as in it has a lot of spokes or maybe spikes. That's my take anyway...

@jasongreene303

6 ай бұрын

I was thinking that also.

@Ponderforge

6 ай бұрын

Thank you

@docknives3792

6 ай бұрын

It is definitely referring to spokes and not spooks.

@gringene_bio

6 ай бұрын

Or Spock-y

@HDL_CinC_Dragon

6 ай бұрын

It bothered me so much every time he said "spooky" when it's *clearly* "spoke-y" lol

looks like if the the Whaleoid and the RocketShip developed together we would eventually end up with the Dragon Wing.

I'm so glad that this is still going. 6 seasons of this is fantastic, with real tests to help prove and improve design concepts. I wish we could do this with practically everything -- let the world of engineers and aspiring engineers alike disassemble and test everything, designing, conversing, sharing, and reviewing every component to find the very best we can achieve. I think RMS would be proud.

Maybe in a future season of the fan showdown, there could be a "noise normalized" statistic. It seems to me that most humans have a certain decibel level they are comfortable tolerating. It is certainly a factor in my fan purchases.

@CrescentX3

6 ай бұрын

Db(A) is actually a human normalized standard for measuring volume!

@ghomerhust

6 ай бұрын

yep, set a noise cap, and test the fan at that cap, as well as full bore. depending on use case, you might want quiet, or you might want brute force! much like the noctua we know and love here vs the insane 5 amp delta fans or the blowimatron (11k rpm)

@drinkoldcoke

6 ай бұрын

Not just noise in DBA, but frequency too. A noise at the same "volume" but a different pitch can be much more bearable. :D

@HazewinDog

6 ай бұрын

The fans are all running at max speed, so you could easily turn down the speed as you would do with any other case fan, in order to match your preference. It's not possible to extrapolate results from one RPM or noise level to others, especially when the fan designs get as unique as on this show.

@athmaid

6 ай бұрын

@@CrescentX3 yeah but if you look at the curve it doesn't exactly account for it accurately. It basically looks like an inverted parabola lol

It would be interesting to have a season where the fans are sound normalized; the goal being maximum performance per decibel.

Nose cone design basics: Round when subsonic, pointy if supersonic. Round again if the tip starts melting.

I almost lost my composure trying not to laugh at the Quagmire clip 😂

Hey man! It would be really cool to do a fan showdown recap episode. All the different testing rigs, all the season’s winners, and everything. It’s just been a while since this whole thing started and I’m sure a lot of people weren’t here for the beginning.

The funny part about nose cones and school busses is that the Falcon9 nose cone can almost fit one inside! 😮

@ragetist

6 ай бұрын

I almost got an aneurysm having to restrain myself from making a "your mom" joke.

Whaleoid is still noisy because there is a pressure differential at the back of the fan blade with the braces that hold the motor.

How have we not had a Gamers Nexus collab yet?! Willing it into existence!

10:12 Looking at the top 6, Andy and Tom are killing it! Nice work.

Surprisingly a pointy car like the Lamborghini Countash is like a brick through the air compared to the blob that is the Prius.

I saw the fake smoke get sucked into the center of the pressurizer so that is a sign that the center fans did work

Maybe you could place an image of each fan in the corner of the frame during the sound test

🥳🎉 Happy New Year Cooper & the Major Hardware Family, Listening to the sounds I prefer the slightly louder & Lower Frequency HMMMMM from the Whaleoid over the higher Pitch of the Rocketship, When Noise is the consideration for me it's not only about db but the sound between a 😐hum & 👉😖👈scream that the fan makes.

0:03 You should have said its hard to believe how fast the years have flowed by. 😉😉

During my 1:1 this week, my manager and I discussed how having a Raid: Shadow Legends inline ad means you MADE IT as a KZreadr. Congrats!

@ghomerhust

6 ай бұрын

sadly, because of how hard they push their ads on people, many influencers and streamers are going AWAY from them as a sponsor. one, who was a lead programmer at blizzard for nearly 2 decades, flat turned them down because of their predatory ad practices.

@TheFallenAngel13524

6 ай бұрын

talkin about Pirate Software?@@ghomerhust

@IIARROWS

6 ай бұрын

If you sponsor that shit, it means you made it as a shitty person.

@stevethepocket

6 ай бұрын

From what I've heard, it really doesn't-they'll start sending you sponsorship offers as soon as they're aware you exist, which will probably be before any remotely reputable company has heard of you. It really only marks a turning point if they're the very first sponsorship you ever take. If you've been doing them for a significant length of time, it's more a sign that you've gotten desperate or that you did something to make all the other sponsors not want to associate with you anymore.

Great to see you keep doing this, i suggest you keep this competition on other things

Huh. Oddly I think I like the sound of the pressurizer the best. Even though it was louder it felt more manageable.

@ghomerhust

6 ай бұрын

it was more of a blank drone IMO, something that easily fades into the background unless it's so loud that it's overpowering conversation or something

Happy new year, ready to fan up!

The longer the hull, the faster the boat. If those fins were shaped to be rounded at the front, and pointy at the end, passing the edge of the blade, it might cause "lift" along the edge of the "hull" as lower pressure systems are created toward the back of the blade, this might cause it to drag air back along the blade faster. ... or something.

blunt nose means a shock wave that sits out front just off the surface of the nose , meaning less heat because the atmo isnt touching the nose

Now the print quality is superb!

I love your videos, you have been my inspiration and I just ordered my p1s bamboo 🎉

I think fans installed inside a cowl should always take advantage of it by supplying appropriate tips.

Anyone else keep coming back for the smoke tests?

The Spoki Star actually sounds like it’s playing a musical chord if you listen closely during the sound test!

aw fuck yeah, go walleyes!

Windmills are turbines, fans are impellers.

Excellent short explanation of rocketry

Wow the print quality has improved so so much, thank you everyone for the content!

"...It's kind of a pain to handle." Haha, yeah, of course; it looks like you'd have to be holding onto a bunch of knife blades!

Look at all of you smart people, "Well you see pointy vs rounded..." and I'm just here loving the memes XD

Can you make a single episode for 40mm 24v fan blade for 3d printing. The noise level is very high. You may have a market to brand it and resell. Many fans out here!!

This is a wonderful part of the internet, I don’t think we’ve found peak fan yet.

Very surprised that the pressurizer wasn't an absolute siren.

Can you make a fan where each blade is rotating on their long axis using individual motors? then make the fan spin

I'd missed this! Great idea for a video series, turning it into a competition! Despite being a Mech Eng, sadly I know little about fluid dynamics - but it has inspired me to have a think about it at least. Is there a link to your spreadsheet of designs v performance?

Pleaes make a 30mm thick version of the A12x25 fan blades, and a 5mm spacer so you can do a 30mm to 30mm comparison agaisnt the phanteks t30!

would be neat with a special episode at some point with light designs like use a lit fan like the new deepcool ft12 fan or some other one with a frame that lights up, see what people could do with translucent prints. Maybe also a show and tell sort of thing people sending pictures and videos of their creations and you looking at them.

@ghomerhust

6 ай бұрын

oh yeah a foggy or clear filament would be neat to experiment with, if those RGB fans have a nice hub like this noctua does. some aren't really able to have the fan come off without damaging the hub or bearings

Have you considered getting one of those water based aerodynamic tanks with UV ink? It's be really neat to go deeper into how the various designs perform in one of those. Lots of work I'm sure

I had a high efficiency (for the day) outdoor AC unit which had a semi-tubercle leading edge on the fan. Repeating semi-circle cutouts, about 5cm wide.

thank god someone did it.

Just a guess, but the Spoki Star has to do with spokes, like those found on the wheels of a roman chariot

Hey! Much love to ya and the whole channel! I've gotten into peltier fans/stove fans. That's a whole new realm of balance. I put together one after purchasing one and trying to find balance to performance. Can you look into it for me? Also get your community involved? You do huge favors to all of us simply just doing what you love, why not expand the horizon just a bit

Whaleoid looks like it's got a good static pressure to it, I would'nt mind seeing that mounted on a Rad as a pusher.

Normies are wrong, most launch vehicles do better with a blunt nose during ascent because an optimised rocket trajectory usually spends a long time subsonic, and the optimum nose for subsonic flight is blunt (see almost any subsonic aircraft). Pointy noses work supersonically (see Concorde) though.

nice print quality! i almost thought those were resin printed

oooOOoo we tried testing tubercle turbine blades recently! The results were not fantastic, maybe we need to try toroidal tubercle turbine blades next 😂🐳

@TlalocTemporal

6 ай бұрын

One of the reasons whales have tubercles is to change the chord of their flippers along the length. This reduces the stall speed and increases the stall angle, so the flippers are useful with more extreme manoeuvres but also good at cruising. Tubercles are also good at catching vortexes and sticking them to the flipper, further increasing the stall angle. Planes usually achive the same effect with tapered and twisted wings, but some also use *fences* and *dog teeth* to achieve similar effects without needing to manufacture lots of 3D curves. Fences are actually quite like the Rocket Ship fan (and the tubercle-shaped leading edge too). Most of these things are to extend the speeds/angles at which wings/flippers are still useful though. A steady-state system like a turbine might not benefit too much.

The beard is lookin great

4 minutes or rocket cone ted talk. That was fun

The Presureiser is certainly capable of keeping the air airflow more evenly uniformed throughout its entire blade's surface inside & outside while spinning giving whatever it's propelling forward/backward a smoother and balanced force of thrust keeping the vehicle more stable while in motion.

Nice 8:05 I like the sound of this one, the low frequency hum is soothing

@forrestgump5959

6 ай бұрын

pressurizer?

Wow, the toroidal quality of the Whaleoid did a lot better than I thought it would!

Pressuriser basically looks like (or at least reminds me of) those rally wheel hubs that basically serve as a breaks cooler and cooler in general for the car itself in that area. Since metal heats up under force and pressure etc ... and race cars need all the cooling they can get.

I came to your channel to see stats on toroidal. My suggestion was going to be a golf ball texture. Mythbusters did it to a car and gained 20% efficiency.

The spoki star would be a good design for an orchard sprayer.

from tec testing to fluid dynamics innovation, seen some Sapphire NITRO+ cards with some familiar fans haha

You might say, the years start coming and they don't stop coming.

The reason I feel that you'll never see tubercles used on anything other than experimental windmills is because the performance benefits they provide do not justify the increased production costs.

I would love to see a short clip of the current leader before the smoke test so we can have an idea of how it should be.

That first one to me reminds me more of a boats prop I saw recently that was supposed to help prevent cavitation and so reduce noise and turbulence…

Dope

Welp, right out of the gate, we weren't on the same page! 😅 I thought Rocket Fan was beard on the *_Grid Fins_* so.... I was wayyy off lol

Hmm I thought it be prounounced spokey star, like wheel spokes.

I was really hoping I'd get to see a Tubercles variation, but Toroidal Geometry on the same shape! It's my Birthday, It's my Birthday, It's my Birthday!!

Question. With your ever escalating advancement in 3D printing.... have you considered running some of the more difficult and/or complex models submitted through new trials?

Live long and prosper Spoki

toe | roy | dal "Who'd ya give it to billy!?" "ta Roy, Dale!"

I think if you were to speed up the smoke test footage, put it on a loop, and you would have a better understanding of how they are drawing air. The whale one pulled so much more air than the rocket ship. To me initially

considering the sound profile and that its at least an average blade for air flow. the rocket ship seems like a viable product.

It’s not spoki star, it’s biblically accurate throwing star

@Bearkirb314 The Pressurizer might work as well as conceptualized with fewer fan blades?

I think one column that would enjoy on your testing is RPM normalized results for the CFM and dBA

@SparklySpencer

6 ай бұрын

I would also be interested in saying if the room temperature has any noticeable differences in performance. As you know warmer air rises easier and cooler air stays lower to the ground. Due to the atomic structure of the more free flowing warmer air and the more densely packed cooler air, technically you might have variations depending on which season of the month or year you tested them in. It would be nice to have a professional testing space.

Where can I download printable fan models? It would be interesting to check their work for yourself

I have submitted a few but with the quality I have been seeing I feel like mine don't have a chance anymore. I love the quality though.

@MajorHardware

6 ай бұрын

There's always a chance my man

You didnt mention that the pressurizer actually did as it was designed and I believe that your "spooky" star is actually spokey as in spokes of a bike maybe. at least thats how it looks like it was spelled.

It would be interesting if you spoke a little about how you managed to print these

I think Pressuriser would have worked slightly better if it had a shroud or some sort of cowling around the front, given how much air it was throwing back out towards the front.

Just a random idea, but i wonder if it would look good if you would put a mirror to see the blades at the side view of the smoke test. (I know you also show it from that angle)

The star one looks like Anubis's ship from Stargate SG1

Do you still have that old ender 7 because I will take it if you can’t get it to work. Why have some broken printer taking up space 😉

Man...that smoke test of the pressurizer though, did you see the smoke behind? I wonder if maybe it's static pressure is superior... Could we start getting a smoke test showing with/without radiator? Cuz if they're better for radiators it's good to know for those of us who do liquid cooling.

*smoke test begins* Have you been living in a box? In a cardboard box??

This show is just meme overload at this point...

I think it's "spoah-kee" star, not "spooky". Like it's spoked, like spokes. Spoki!!! Man, I have to say I really enjoy when these fan review vids feel longer - more talk about the fans themselves before going into the various tests that are involved. Sometimes the fan showdowns felt a little abrupt and rushed here and there - maybe it was just me though :P

I think spoki is supposed to be pronounced like pokey with a S not spooki. Lol. Great vid as always. Keep it up!

Go Walleyes!!

@thundergut6539

6 ай бұрын

I was scrolling the comments to see if anyone said anything. Our team

What episode were the Devil and Dragon Wing in?

I wish this is what was on the TV at the doctors office or gas pump or wherever.

Redo the whale ode with the bumps just on the actual leading edge of both leading edges of the toroidal. Also delete that last outside on the leeding edge whale bump it's clearly in the taper off of the fan blade.

Sorry to say but they are not toroidal blades as what was being experimented with. They are just flat blades with a hole in the middle! The blades should have a “twist” towards the tips.

With regards to the rocket shape discussion, I heard a joke once... "If women ran the pentagon, would rockets and missiles be shaped differently"?

When's the last time I saw a rocket shaped like a school bus? Challenger.

you should use SLA Printer for fans - more precise parts and better quality, for other bigger parts FDM

why don't you use a polysher to smooth out the ruff 3d printed fans?