Turning a PC fan Into a JET Engine | Fan Showdown S5E4

fan showdown season 5 episode 4 and today we got some pretty Unique Designs some stuff that I haven't really seen before in past episodes and also I think I should make mention that you might see a name or two that that have appeared previously in this season now normally I keep it one submission per person per season however I thought these designs were so unique that it was worth foregoing that uh that rule but let me know what you think in the comments down below if you think we should do that in the future should we keep it specifically one submission per person per season or is it okay if we make an exception if we see something unique or new in this whole series I'll let you decide but before we get into all that crazy stuff let's talk about a design that's based more a more conventional design inspired by the automotive world this is the 993 and it was created by yukai now if you're a Porsche fan you might know exactly where this design comes from but if not let me explain in 94 Porsche released a new 1911 designated internally as the 993 this vehicle was actually pretty revolutionary at the time and it was quite different than its predecessor than 964. according to Porsche every part on this car was redesigned from the ground up including the engine that engine is the legendary Porsche Flat 6 which has been in production since 1963. however what makes the 993 different and why it's so cherished among the Porsche Community is because it was the last 911 produced with an air cooled flat 6. so how do you keep an air-cooled six-cylinder engine cool when you're sitting in traffic on a hot summer day well you use a big old fan and a pretty cool one if you if I do say so myself this is the fan that inspired the 993 created by yukai and I'm willing to bet Porsha knows a thing or two when it comes to creating a good fin especially when you're producing air cooled engines when the entire rest of the automotive injury is like moved to liquid cooling like years ago on the original 993 you're going to notice that there's these cutouts in the hub now I've never seen a 993 fan or worked on one in real life but from the photos that I've seen it appears that this fan mounts over the alternator so I'm gonna guess that these holes were placed in the Hub in order to let cool air get to the alternator now yukai's design has these cutouts to keep his design at similar or consistent with the original however yukai made the attempt to make these more functional for our purposes rather than just have the cutouts yukai added small blades in between each hole and I thought that was a really good touch now next up we have Andy and his fan Angel and he said he's an architect by day specifically a computational design specialist which means he says he makes cool geometry with Rhino and grasshopper now Rhino is a CAD software and grasshopper is a visual programming language both of which I have zero experience with at my day job I use SolidWorks maybe occasionally Katia but I was interested to see what these were all about so I did a quick Google I looked at the UI no I think I'll stick with SolidWorks for now it looks just a little crazy now Andy said because he's an architect he doesn't know anything about fans but he did what he always does in these situations and he did a little research and decided to give it his best shot and he found two papers um one about blade design of an actual fan and the other one the improved efficiency and sound quality of using 11 blades now the article on the 11 blade propeller I actually found that pretty interesting and I thought that the piper Cheyenne that they used to test the 11 blade propeller was kind of funny looking for some reason but we're always trying to figure out what's the best number of blades to put on our fans as it's like 10 12 11 9 but uh according to Mt propeller the German company that's testing this 11 boy propeller they've tested both seven and nine blade propellers and are now moving to 11 blades and it's shown promise of developing a low noise high performance aircraft now I get it a propeller on an aircraft and a PC fan are not the same thing however the a12x25 does use nine blades [Music] Andy said he did his best to butcher both of these ideas into a singular fan design and the fan is called the angel because he said he found out 11 is actually an angel number and the the Lord goes 11 represents intuition sensitivity and awareness so maybe all that will play into Andy's Advantage for his design now these last two step a little further outside the box this is the variable and it was created by MK and you might recognize the name MK and that's because he's the one that brought us the simple 13 which did surprisingly well for the the lack of design effort that was required to make it now you might be looking at this new fan thinking um where's uniqueness it just looks like an updated simple 13. you see those those are M3 Flathead screws and each one of these blades is actually mechanically connected to the hub with one of these M3 screws the reason being is this allows each blade to rotate freely and what Mk is going for here is a fan that can automatically set its own pitch based on its rotational velocity the idea here is that each Blade's pivot axis is at an angle such that the faster the fan spins the greater the angle of attack and as the angle of attack gets greater the more drag is created which then slows down the fan and reduces the angle attack and MK is hoping that this design will be able to automatically find the optimal angle of attack based on the angular velocity to produce the best possible performance now unfortunately MK said he didn't do any real world testing so there's no guarantee that this is going to work but just the the description alone was enough to get me uh interested in trying it out now I did run into some problems printing out this fan due to how thin the blades were on the trailing Edge also once I had it all put together I did run into some interference issues with the with the tips of the blades and the fan shroud but after enough fiddling around I got it to work and it it seems pretty good I only wish I had a high speed camera good enough to be able to see if the blades if they actually change their their pitch angle based on the speed I know I'm sad too but maybe one day we'll have a high speed camera good enough I try to use my smartphone with the super slow-mo setting but that wasn't it just wasn't fast enough to see each blade now this last design is born of a tried and true method of creating pressure and everyone's favorite actual compressor the jet engine [Applause] this is the multi-stage and it was created by Fran the multi-stage is set up like a lot of fans from season four with an intake side and exhaust side however it's a bit more complicated than what we saw in season four the fan itself is comprised of two rows of blades and the intake has a set of Staters between the blades and a set of Inlet guide vanes out front the intake is also split in half and that's just done so I can put the fan shroud together around the blades now in a normal jet engine there's many many many rows of rotors and Staters that compress the air before it's injected with fuel and ignited now the multi stage only has two but this really hasn't been tried in any previous fan design in this series so you're a liar I thought it'd be very interesting if it actually worked out also because we're pushing air through a radiator I think this is like the perfect uh the perfect setup for something like this now it did have its issues again the blades were very very thin they did print better than like the the variable however I do have my concerns that once it's put together and it spins up that they're going to deform and if there's any deformation at all in these blades they're immediately going to touch the in the guide veins or the Staters or the sides and it's just going to be it ain't gonna be good we might have to RPM limit it just so it doesn't contact the uh the Shroud here but we'll see how it works just hold it in place for a minute so after messing around with it a little bit it is running smooth now but man this one's yeah it's going to be pretty limited on how fast it can actually spin it as soon as those blades deflect any bit at all they just run into everything now before we go any further I think this episode has a pretty good takeaway give your blade some meat like it's good to have things thin and light but if things start to deform under load you're gonna it's gonna drastically hinder performance but let's have a listen the angel came in around 47.3 DBA the multi-stage came in around 40 DBA the 993 came in around 54.5 DBA the variable came in around 47.4 DBA now the most notable thing of this round of sound testing is the 993. this thing is horrendous to listen listen to I don't know how well it comes across on the audio recording but it's pretty loud and the frequency of the sound is is kind of unbearable it might be the worst sounding fan I've actually ever heard I would be curious to know if you own a 993 or have you ever been around a 993 as it's sitting idling does the fan in the car sound like that because that would be crazy if these are similar because I think that's a horrible sound and I would not want to listen to that in a cooling fan but let's see how it uh how it moves air around [Music] all right foreign [Music] [Music] foreign [Music] thank you [Music] nothing really to know they all seem to have pretty good flow patterns but it's going to come down to who can move the most air through the radiator the variable came in around 430 feet per minute the 993 came around 435 feet per minute the multi-stage came in around 268 feet per minute and the angel came in around 485 feet per minute placing the angel in first place to 993 in second the variable in third and the multi-stage in fourth and overall they finished first 10th 11th and 17th the angel actually did exceptionally good in today's testing it was pretty quiet the sound wasn't really harsh on the ear it performed really good just barely fell short of the a12 x25 so I guess technically Andy can call himself An Architect by day and a fan wizard by night so thank you guys all for watching if you're interested in getting in on the action of the old fan showdown and down in the description there'll be links to different resources to figure out how the how it works but in a nutshell you need to send at least your fan designs to the fanshowdown at gmail Dot com and then make sure before you make your fan to head over to my thingiverse account to look at the dimensions there's a there's a sheet I put together of critical Dimensions that need to be met to make sure your fan fits on the a12 x25 Hub and they also supplied some templates for you to use like models to use as templates thank you guys all for watching I hope you get subscribed if you want to help out the channel that'd be great see you next time

Channel: Major Hardware

Views: 238,158

Keywords: fan showdown, fan show down, major hardware, youtube subscriber challenge, pla, 3d printed fans, noctua, a12x25, noctua a12x25 mod, 3d printed challenge, custom pc fan challenge, custom pc competition, jet engine PC fan, major hardware fan showdown, pc fan, gaming, gaming pc, 3d printing, prusa, flsun, how to make your own pc fan, best 3d printed project, pc fan mod, 3d printed pc mods, best pc mods, best pc mod with 3d printer, how to customize your pc, how to make a fan

Id: rNPhSuusgpk

Length: 12min 17sec (737 seconds)

Published: Sat Jan 14 2023