In the spirit of November, I screwed up my one and only fact check. HVLS is High *Volume* Low Speed. A most fantastic error! Also - for the sake of clarity, my comparison to helicopters is more jokey than literal and I shouldn't have phrased it as I did in the script. So don't go thinking helicopter rotors are just powerful fans because there's much more to it than that!
I'm an aerospace engineer, who worked with helicopters. I second your comparison. All the rest is negligible especially for No Effort November. Also, the last fan, attached with the cord, perfectly shows why helicopters need a second rotor placed at the tail. Love it!!!
I also want to acknowledge how Alec has gotten skilled enough that the "no effort" videos are still better put together than some fancy ones (and most ads, which companies pay Real Money for).
@@exothermal.sprocket Of course the helicopter pushes the earth away from it, what we see as climbing is actually just the entire earth moving away from it.
i love that he's really putting in less effort for November. In Novembers past it felt like he was just saying he put in less effort while actually staying close to the same standard. THIS is the no effort November i always wanted
I actually am one of those fan collector people. I mainly focus on table and desk fans, but I found this video interesting. In the collector circles, though those Emerson heat fans are also known as the blender fan. Pretty sure Dan told you that.
Fun fan fact: one of the companies known for HVLS fans is called Big Ass Fans, and is headquartered in Lexington, KY, USA. Their mascot is a donkey appropriately named … Fanny.
Yes, and they sell their fans with and without their brand shown on the product, because while some places (such as warehouses and factories) are okay with the "Big Ass" branding, other places (such as schools and churches) tend not to be.
Haha I learned about them when I was organizing engineering documents for a new compressor building. I had to read it twice and look them up, they definitely earn their namesake xD
0:56 Fun fact, since most helicopters' tails are shorter than infinity feet (infinity meters), the tail rotor doesn't just produce a torque force, it also produces sideways thrust. Because of this, the main rotor is tilted slightly to the opposite side, to produce a counteracting thrust and keep the aircraft from drifting sideways when the controls are neutral.
@@kv4302 Math involving infinities is weird. The number of integers is aleph_0, which is also the number of rational numbers and several other things. The number of reals is aleph_1, which is infinitely larger than aleph_0. Multiplying infinities by finite numbers generally just gives you the same infinity you started with.
This is very useful because I will henceforth reference all jet engine power output in the unit of Ceiling Fans. The F35's P&W F135 afterburning turbofan produces 43,000 ceiling fans of thrust (on full AB).
Contractor here. Fun fact! We literally mount these to extra sturdy boxes called (at least in my market) *fan boxes* . Responsible electricians do this either into the joist or into blocking attached to the joist. In retrofit applications there are special bar-mounted boxes that telescopically spear themselves into *both* adjoining joists. Even crap-grade framing screws shear at or above 80lbs of force and most electrical boxes get two or more. Unless your builder has missed the joist, a metal electrical box won't even notice an additional pound of force. Even more fun? fan boxes are often the only ones deep enough for surface-mount potlights and their associated clips and electronics. We use them when we need cheap, effective soundproofing. Slap a commercial putty pad on the back, and you won't hear a whisper between floors.
I did my own fan install, but I had joist access but not knowing what box to get I just got one with the cross bars and said it was rated at 300lb static and 150lb live load. And I know my fan is not 150lb. but it was an interesting box because the fan does not hang from the box itself but instead from the cross bar with U shaped bolts that go over the bar and down through the electrical box.
Don't forget about ground effect --- running a propeller near a surface will generate more thrust than in free air, because the pushed/pulled air can't get out of the way because the surface is there, increasing the pressure differential. It's what makes ekranoplans fly, and is also why it's hard to fly a drone near the ceiling (it keeps getting sucked up and hits it). I'm afraid you're going to have to do all these tests again, but with a fake ceiling present!
And CLEARLY if putting in that much effort he should also find a way to absorb the torque without it impacting the scale - a project for a more effort May? (I was thinking mounting to a fan box which was in turn attached to vertical rods via low friction rollers -- the rods would prevent the torque from impacting the scale but the rollers would allow the minute vertical movement from the thrust. Though the torque might add enough friction to affect the thrust reading)
I was going to say that. Furthermore, with the 2 cabinet nearby there is a significant recirculation effect going on. It would have been more precise to test far away from any obstacle (so that no wind is felt near the obstacles)
There's a minor typo in the captions @ 08:44. "... to make sure it wasn't taught [sic]" where "taught" should instead be "taut." Thank you, kindly, for consistently providing captions on your videos. I have auditory processing issues and they're immensely helpful.
10:20 at the end of the word "no" there is a distinct tone audible, possibly caused by some part of the fans in front of you on the table. Either a fanblade or something else has a resonant frequency of about 974 Hz according to my FFT Analysis. And yes, you may call me a geek.
However, I do feel like the tone in the background is generated by something else and the fact that it's cut short is just the denoising and/or a noise gate that tries to get rid of it. I suppose only Alec himself can solve this mystery for us.
Fun fact! The thrust, movement, and changing weight of a ceiling fan makes it a live load. This is why ceiling receptacles have two ratings -- one for chandeliers and one for ceiling fans. For example, the ceiling boxes I just bought for a house remodel are rated for a 50-lb chandelier (dead load) OR a 35-lb ceiling fan (live load). Edit: I believe the ceiling fan-rated boxes have a different bolt pattern than ones that are only rated for a flush-mount light fixture, so it would be pretty hard to mount a ceiling fan to a receptacle not meant for one. (I have seen it, though, the fan was dangling by one screw.)
Mine are mounted on whatever was in the ceiling when the house was built. And I'm sure that was well before ceiling fans were a thing. So, they're not rated for anything. They've been there for 28 years or so without falling off.
Oh people will find a way to use the wrong receptacle. Never underestimate the ingenuity of idiots. With enough baling wire and duct tape, you can jury rig anything.
Yeah, and for those not familiar - the heavy duty ones have to mount to a joist, either directly or with a bracket that spans between two joists. A standard flush light fixture box is often just clamped to the ceiling drywall. You do not want a fan supported only by a couple little ears holding the drywall!
I like to think that when Alec was shooting, he just did a bunch of takes of "which is a different number in kilograms," then shuffled them before the final render.
I suppose because Alec didn't say "We're gonna test that". Perhaps he will update us after he gets his 11% rebate back next year to have the correct pricing listed?
Fun fact, part of the reason why these numbers are so tiny is because helicopter blades and plane propellers are NOT just giant super fast ceiling fans. Theyre shaped to have the same curve as the wings that produces the pressure differential, and that's part of why they are so kuch more effective
The pressure differential is NOT that much of a factor. Airfoils produce lift simply due to Newton's 3rd law of equal but opposite reaction. It's that simple. The shape of the wing ensures that the flow of air over the top of the airfoil is directed downwards as it comes off the trailing edge. This happens due to surface tension causing the air to "stick" to the curved surface as it flows over it. This is also why airplanes at "cruising" altitude must maintain a slight "nose-up" attitude (usually around 2 or 3 degrees or so. . .).
The object on the table next to you being unreasonably massive is such a great recurring gag. This, the fridge, and the dishwasher video all got a good laugh out of me.
I'm here on behalf of the effort police and I've got to say that this video has a suspicious amount of effort put into it. Multiple fans? Keeping twisting in mind when doing calculations? A highly sophisticated mounting and measuring setup? You better believe we will be in touch about this, Mr. Technology Connections, if that's even your real name!
@@mrosskne When you apply torque to a flux capacitor during operation, it causes a twist in the time dilation factor. The associated change in gravitational force causes the scale to fluctuate.
Ceiling fans should have a special mount, not just a wall box. My brother's medical career was almost cut short when an improperly mounted ceiling fan fell and left a divot in the plywood flooring where he had been laying watching a basketball game only seconds earlier. Saved by the snack!
Is that figs on edge or figs laying flat ? Also this happens to go well with banana measuring. One fig laying flat is the same as one banana thickness 🤔
@@jollyrogerq I've discovered over my years on TH-cam that all the nerds on TH-cam seem to be interconnected. I watch most of them and they all watch each other too lol. We all seem to hang out in the same "corners" of TH-cam xD
I'm not gonna correct this comment's typographical error out of principal, but I am gonna write a comment about me not correcting it, which seems antithetical to the whole idea of not contradicting the very essence of No Effort November, but, uhhh... Um.
Haven’t known of you for long. But since I’ve discovered dozens of your vids that just: 1) Blew me away! 2) Answered a question I’ve thought about for years! 3) Don’t remember what ‘3’ was. ANYWAY, U R GR8!
"Fan" is an exaggeration. These things are air stirrers. Also: I loved the "which is a different number in kg" snark. Especially since SI prefers to measur thrust in N.
Yes, some of them are really bad. The ones here are much better than for example the ones with wings made out of metal pipes with some kind of mesh in between.
Oh, no question. And I for one am happy that I'm not the only one who struggles not to switch to a Scottish accent literally every time I say "thrust"!
I was waiting for a small plane to crash into my building so I could repurpose the engine and prop for cooling. Problem is the flames just got worse the faster I ran the motor...
@@busimagen The difference is mostly units of measure of volume, if I recall correctly. That and possibly units of length smaller than an inch, which no one actually uses in the normal course of events. The Imperial system is basically just 'every specialised unit of measure of things relevant to a specific field, standardized such that unit X is always unit X, with people then prefering to reuse existing units rather than create new ones if the existing units were sufficient to their new task'. Over time some fell out of use as the specialty they came from was less significant, and then sometimes things were rationalized a bit when that left gaps that became an issue later. Imperial units are Very Good at the things they're intended for, and Terrible at everything else, and conversions are a pain. US customary units Started Out as British Imperial units, but then things happened. SI units (kind of sort of metric but not exactly) are intended primarily for scientific applications, and for stuations where great precision is needed, as well as to minimise, simplify, and/or eliminate conversions wherever possible. Officially only the base units and multiplying or dividing it by 1000 are actually Things in SI, but you'd be hard pressedd to find a country that uses the metric system that doesn't add additional units for practical reasons: Centimetres (1/100th of a metre) are pretty much universal, for example. Some places use decilitres (1/10th of a litres), most places will use teaspoons (5ml), tablespoons (10 or 15ml depending on country), and cups (250ml, or 1/4th of a litre, or 200ml, or 1/5th of a litre, depending on where you're talking about... good odds on one of those having it's origin in American units and the other in British, though it's quite possibly unrelated, but it's very confusing when you end up with the wrong one!) for cooking because it's just substantially more practical for things of that scale for that particular application. ... and don't be surprised if you find the occasional stray imperial unit still floating around for certain niche applications.
In the spirit of Not Going To Look That Up To Verify November, I think I read in my homeowners electrical guide that recent code change requires all ceiling boxes to be fan rated for the idea that why have a lightweight type for lights if some day a fan is wanted. Install now instead of retrofit later
THANK YOU for telling me about reversing fan directions! I have been suffering for YEARS in the summer because I never knew my ceiling could do that! Winter time circulation, here I come!!!
I feel like this needs to spawn its own spin-off series just investigating random questions about things from home improvement stores. Maybe we should test how much thrust is produced by a shop vac next
The Emerson Heat fan was the very first ceiling fan I saw. My grandmother had one put up in her living room when I was very little (sometime in the mid to late 1970's) and was in her home when it was sold in 2000. Never had a day of problems. I don't know if it was suppose to be reversible but hers was. It looked just like the one in the video. Thanks for the nostalgia as I had not thought about her house in a very long time.
Careful, fig cookie bars is a unit of pressure, while fig newtons is a unit of force. You need to multiply or divide by the area of said fig bar in order to convert between the two.
10:24 my takeaway is not that you put effort into every video but that your content still shows a lot more production value than 99% of youtube DESPITE the lack of effort AKA youre a natural
For anyone who didn't already know, "jerk" is indeed the proper scientific term for increase or decrease in acceleration, just like acceleration is the term for increase in velocity. I don't know how many more layers deep it goes.
Through the magic of imploring via two different videos... I implore you to release Technology Connections branded socks, with the tagline 'Through the magic of buying two of them'.
So I’m a certified scale technician, and I would love to offer some of my experience in this field to help setup experiments like these. I would suggest that instead of using a hanging scale maybe you can flip everything over and anchor the fan to a floor scale which will give you a more stable reading and I could provide an indicator that will zero out after placing a load on the load cells. If you use a 4x4 platform with a load cell in each corner and wired to a junction board and then the indicator the you got a sturdy base
A problem with that solution is that when you have a plaform below the fan, the air coming from the fan will push/pull on the platform it self, cancelling out a big part of the "thrust". But it would work if you replace the platform with a large frame instead (which is much larger than the fan diameter, so the air can pass thru unaffected), that has it's corners resting on the load cells. Then attach 2 thin wide beams to that frame, going thru the middle of it, with their flat sides vertically (so they "cut the air" with neglectable area perpendicular to the flow) at which the fan in turn is attached to. If the fan gets too close to the floor, the thrust may increase slightly though - due to a high/low pressure zone building up when the the in/outflow to the fan gets restricted - but the same thing will happen to a fan mounted close to the ceiling. It even happens to a helicopter very close to the ground (it get slightly more lift there compared to when it has gained some altitude). So that's more a question of what one wants to measure. But the load cells and corners on the frame can be placed on top of something, for example 4 stools to get a "free air" measurement, like he did here.
TechnologyConnections finally featuring ceiling fans AND featuring Dan Spiffy Neuman?? This is the most effort I've ever seen put into No Effort November
I got to, you're the only person that can teach me about the most mundane things while keeping it entertaining. I love your channel for that. Thank you for putting in the effort for your videos. Even on no effort November lol.
FYI, since your curiosity was triggered by planes and choppers, and after 30 seconds of güügling: -- A small airplane requires about 500 - 1,000 Fig Newtons to fly. -- A small chopper requires about 5,000 Fig Newtons to hover. These figures are leaving out a LOT of detail ... just intended to give an idea compared to your results. Really fun vlog. Thanks!
Oh my god I have those heater fans in my living room! I don't have any way to turn on the heat but I always wondered why the fans look the way they do! My house was built in 86 though and my ceilings are very high so it would make sense to use them.
I am a new FAN of this channel. Also, thanks for reminding me to swap the direction of my ceiling fans! *Alexa, remind me to swap it again in 6 months*
while I get what movie you are referring to, I feel like if anyone was crazy enough to try and built some kind of rocket with a microwave it would be Styro Pyro.
TC should make a couple of videos related to fans. There are several questions he can explore. 1. In summer, which fan cools the room better / faster ? A ceiling fan that blows air up/ down or a standing fan that moves air sideways (possibly to outside of the room). 2. Does having two fans push air simultaneously downwards ( or upwards) work better to circulate the air than having each one push air in the opposite directions? 3. Does having an air-conditioner work together with a fan better than just air-conditioner alone? 4. Say you have 2 rooms connected by a door. One has windows that are exposed to summer daylight, and the other one is not. What's the best way to cool both rooms? Treat them as 2 individual rooms ( ie keep the door closed) or as one big room ( door is opened)?
1 is easily answerable with a google search; I'd love to answer it here but we don't have ceiling fans here so even though I saw the answer before I didn't bother memorizing it
Those low speed high velocity style fans for industrial use are kinda terrifying but awesome to have. At an Autobody shop I was working at, it was built into a building that was initially used as a warehouse. We have ceilings that were around 35 feet high so they got these fans from the brand "big ass fans" each blade was probably about 12 feet long and a foot wide. They were massive and if you turned it up it went WORRYINGLY fast but boy did that thing move air. Whenever we were welding or applying blackout tapes or stickers to cars we'd have to lower the fans down to like 5 or 10% speed because if we didn't it would blow away the shielding gas and make the stickers flop around like you were working outside on a moderately windy day.
I've seen that brand before! They had them in some spots at Gardens by the Bay in Singapore. I thought the logo was funny. My God, did they make a difference in the blasted tropical climate.
5:03 ok, I’m through with all these silly units like “horsepower” and “Watts.” I’m quoting all my power figures in cookie bar meters per second from now on.
Fun fact: helicopters are immensely harder to fly than fixed wing even with the spinny thing on the tail. My CFI told me I was a natural pilot, my rotorcraft instructor did not.
I’m a big “fan” of this “fan”-tastic video! “Cool” to see a fellow fan enthusiast Dan and his wealth of knowledge on ceiling fans featured here. Can confirm myself that Envirofan Goldlines are among the best industrial ceiling fans one can buy :)
A friend has a smaller Envirofan (I'd say 36in inch) installed in the bedrooms of their house. They are terrifying when turned on, but they really blow! The reason they haven't been replaced is that the previous owners of the house, for some reason, installed them hanging off of a hook driven into a ceiling joist instead of using a box.
I can't wait until this turns into a viral back-and-forth between science TH-camrs who will say, "but you need to account for (proximity to the ceiling, proximity to the ground, ground effect, etc... I'm not a science)". Like the whole series about electricity between Smarter every day, Veritaseum, and Electroboom.
Ah, that happened eh? I've never watched electroboom, I stopped watching Veritasium over his smug wrongness, and I stopped watching Smarter Every Day over his kooky support for religious exploitation, disgusting family dynamics, and anti-science.
In the spirit of November, I screwed up my one and only fact check. HVLS is High *Volume* Low Speed. A most fantastic error!
Also - for the sake of clarity, my comparison to helicopters is more jokey than literal and I shouldn't have phrased it as I did in the script. So don't go thinking helicopter rotors are just powerful fans because there's much more to it than that!
89 comments in 2 minutes. damn
I bought a thermoelectric fridge and a portable monobloc indoor unit AC just to know your reaction ❤❤❤
Since no effort november is a thing, you should do double down december, where you put twice the effort in to yoyr videos.
I'm an aerospace engineer, who worked with helicopters. I second your comparison. All the rest is negligible especially for No Effort November. Also, the last fan, attached with the cord, perfectly shows why helicopters need a second rotor placed at the tail.
Love it!!!
I appreciate you not going into detail, November and all.
I like the paradoxical nature of No Effort November typically having the most video throughput of the whole year.
Rebound effect. ;)
He just gets out all the little not-worth-a-real-episode topics all at once.
I don't think think it is paradoxical at all. effort takes effort and time. He could make a rant about cheese production and it could be no effort.
I also want to acknowledge how Alec has gotten skilled enough that the "no effort" videos are still better put together than some fancy ones (and most ads, which companies pay Real Money for).
"No effort." ... Still measures multiple different models of fans. He's not like us.
Actually, the propellers and rotors ARE fans. Their job is to keep the pilot cool. If they stop, notice how the pilot very quickly starts sweating.
Good Pilots start sweating, bad not-pilots-anymore jump out :D
As a pilot, I approve of this message....
Top tier joke. That made my day.
Is the helicopter suspended above the ground while operating, or is the helicopter simply preventing the ground from coming up to hit it?
@@exothermal.sprocket Of course the helicopter pushes the earth away from it, what we see as climbing is actually just the entire earth moving away from it.
This feels like a condensed version of an old-fashioned MythBusters episode, complete with sketchy test rigs.
it's like one of the small myths they give one guy to test on the side of the main theme of the episode
Lately, I’ve really been hoping that someone gets Adam Savage to watch this channel
I was going to say the same thing. He needs to do a mythbusters type show on appliances. Toaster myths ect.....
What episode plz?
and complete with moments where you're like "oh my god he's gonna slice himself in half" 8:45
Not “fan fiction” but “fan facts.” Thanks Dan.
I'm taking that over to my AO3 readers discord channel
7:29 So your scale wasn't tare-able, just terrible?
OMG! [facepalm] Get out!
this deserves a pin lmao
On a scale between 0 and 0, I rate this comment 0
Oof
Boo 😆
I deeply appreciate the mentions of kilograms.
I'm going to steal this phrase. "This weighs 12.4 kilograms, which is a *different* number in bald eagle units"
@@m0llux But Canadians & Mexicans use metric.
@@colaxxi Canadians and Mexicans don’t consider the bald eagle their national symbol.
@@Kwpolska Correct, in Canada we use Beaver units.
i prefer my figures to be expressed in fig cookie bars
"That's a different number in kilograms". OK I am reeeaaally starting to enjoy No Effort November.
Yay it's Game Snack
I'm glad the Kilogram gang was taken into consideration.
It's the best time of year
Joooooooooooooooooooe
But, then he went and converted the thrust figures into kilograms and even some into Newtons, fig newtons.
dear mr. connections,
thank you for asking the real questions.
best regards,
best regards,
It's actually a good way to measure the amount of air displaced by the fan, aka its efficacy.
i love that he's really putting in less effort for November. In Novembers past it felt like he was just saying he put in less effort while actually staying close to the same standard. THIS is the no effort November i always wanted
I was hoping he'd curve or bend the blades to make them into proper propellers but alas.
It's an example of the 20% of the effort getting 80% of the benefit perhaps 🤔
Like "that's a different number in kilograms" - couldn't be arsed to do the conversion 😅
He learned to let go
He could still put in less effort while making videos that are worth watching
"That's a different number in kilograms" really got me. I applaud your commitment to no effort!
had to check the comments to make sure I wasnt the only one who thought that was hilarious lol
I actually am one of those fan collector people. I mainly focus on table and desk fans, but I found this video interesting.
In the collector circles, though those Emerson heat fans are also known as the blender fan. Pretty sure Dan told you that.
Heyyy!
Fun fan fact: one of the companies known for HVLS fans is called Big Ass Fans, and is headquartered in Lexington, KY, USA. Their mascot is a donkey appropriately named … Fanny.
Yes, and they sell their fans with and without their brand shown on the product, because while some places (such as warehouses and factories) are okay with the "Big Ass" branding, other places (such as schools and churches) tend not to be.
Haha I learned about them when I was organizing engineering documents for a new compressor building. I had to read it twice and look them up, they definitely earn their namesake xD
They better not sell in the U.K with that mascot...
We've got a few in my factory, they live up to the name and do their job 😂
Big Ass Fans are in every single airport in New England as well as JFK in New York City.
0:56 Fun fact, since most helicopters' tails are shorter than infinity feet (infinity meters), the tail rotor doesn't just produce a torque force, it also produces sideways thrust. Because of this, the main rotor is tilted slightly to the opposite side, to produce a counteracting thrust and keep the aircraft from drifting sideways when the controls are neutral.
Could have said "which is the same in meters"
Is this why the tail routers are also tilted slightly upward?
@@seigeengine or even "which is the same number in metres". heh.
@@laurencefraser but is it though? one infinite is not the same as two infinite! i think! lets get some math nerds in here!
@@kv4302 Math involving infinities is weird. The number of integers is aleph_0, which is also the number of rational numbers and several other things. The number of reals is aleph_1, which is infinitely larger than aleph_0. Multiplying infinities by finite numbers generally just gives you the same infinity you started with.
I didn't have technology connections only fans episode on my 2024 bingo card, but here we are.
Wasn't expecting that. I should have been, but I wasn't. Take my thumps up 👍🏻
@@WormBurger same, lol
@@WormBurgerUm, your last sentence is a bit worrisome, considering the context of O F ...
Missed opportunity for an April 1st video!!
OHHH! Ohhh! YOU!!! -- take my upvote and go.
Please never stop doing these. My ex introduced me to this channel when we were together and now it is one of the few things to bring me comfort.
This is very useful because I will henceforth reference all jet engine power output in the unit of Ceiling Fans. The F35's P&W F135 afterburning turbofan produces 43,000 ceiling fans of thrust (on full AB).
Heating function included!
😄
Anything but the metric system 🤣
Call it CFM, for Ceiling Fan... Movement
For a while, I was converting speed into furlongs per fortnight.
Contractor here. Fun fact! We literally mount these to extra sturdy boxes called (at least in my market) *fan boxes* . Responsible electricians do this either into the joist or into blocking attached to the joist. In retrofit applications there are special bar-mounted boxes that telescopically spear themselves into *both* adjoining joists. Even crap-grade framing screws shear at or above 80lbs of force and most electrical boxes get two or more. Unless your builder has missed the joist, a metal electrical box won't even notice an additional pound of force. Even more fun? fan boxes are often the only ones deep enough for surface-mount potlights and their associated clips and electronics. We use them when we need cheap, effective soundproofing. Slap a commercial putty pad on the back, and you won't hear a whisper between floors.
I'll bet you have seen your share of fans mounted on pancake boxes screwed to lath behind real plaster.
I did my own fan install, but I had joist access but not knowing what box to get I just got one with the cross bars and said it was rated at 300lb static and 150lb live load. And I know my fan is not 150lb. but it was an interesting box because the fan does not hang from the box itself but instead from the cross bar with U shaped bolts that go over the bar and down through the electrical box.
@@TechGorilla1987pancake boxes were legal for fans for many years.
@@barfy4751is this a literal term? A box of pancake mix..?
@somethingsomething404 it's a thin box that can mount on the surface of the framing. Same thickness as the rock
Send my thanks to Dan. It's nice to have a collaboration video with fans who can thrust.
I love this Project Farm second channel with less yelling and safety precautions!
Don't forget about ground effect --- running a propeller near a surface will generate more thrust than in free air, because the pushed/pulled air can't get out of the way because the surface is there, increasing the pressure differential. It's what makes ekranoplans fly, and is also why it's hard to fly a drone near the ceiling (it keeps getting sucked up and hits it). I'm afraid you're going to have to do all these tests again, but with a fake ceiling present!
So if you put a scale on the false ceiling, you should be able to get the total thrust and the ground effect thrust in one run…right?
I wonder if he can just flip it 180 degrees and run it upside down
That would be ceiling effect 😅
And CLEARLY if putting in that much effort he should also find a way to absorb the torque without it impacting the scale - a project for a more effort May? (I was thinking mounting to a fan box which was in turn attached to vertical rods via low friction rollers -- the rods would prevent the torque from impacting the scale but the rollers would allow the minute vertical movement from the thrust. Though the torque might add enough friction to affect the thrust reading)
I was going to say that. Furthermore, with the 2 cabinet nearby there is a significant recirculation effect going on. It would have been more precise to test far away from any obstacle (so that no wind is felt near the obstacles)
There's a minor typo in the captions @ 08:44. "... to make sure it wasn't taught [sic]" where "taught" should instead be "taut." Thank you, kindly, for consistently providing captions on your videos. I have auditory processing issues and they're immensely helpful.
thanks
I'm pretty sure that the electrical cabling is uneducated.
Being a pedant is COOL.
Oh wait, it’s just annoying. Never mind.
I can't believe he's specifically going after uneducated fans only, that's not cool
10:20 at the end of the word "no" there is a distinct tone audible, possibly caused by some part of the fans in front of you on the table. Either a fanblade or something else has a resonant frequency of about 974 Hz according to my FFT Analysis. And yes, you may call me a geek.
Nice catch. I tested to see the resonant frequency of my bathroom and it's approximately 130hz
I like your style. May your Fourier transforms be fast and your bins aplenty.
However, I do feel like the tone in the background is generated by something else and the fact that it's cut short is just the denoising and/or a noise gate that tries to get rid of it. I suppose only Alec himself can solve this mystery for us.
Thanks!
Fun fact! The thrust, movement, and changing weight of a ceiling fan makes it a live load. This is why ceiling receptacles have two ratings -- one for chandeliers and one for ceiling fans. For example, the ceiling boxes I just bought for a house remodel are rated for a 50-lb chandelier (dead load) OR a 35-lb ceiling fan (live load).
Edit: I believe the ceiling fan-rated boxes have a different bolt pattern than ones that are only rated for a flush-mount light fixture, so it would be pretty hard to mount a ceiling fan to a receptacle not meant for one. (I have seen it, though, the fan was dangling by one screw.)
Interesting, though I am fairly certain I have seen adapters for sale.
Mine are mounted on whatever was in the ceiling when the house was built. And I'm sure that was well before ceiling fans were a thing. So, they're not rated for anything.
They've been there for 28 years or so without falling off.
@sonicmastersword8080 Was just going to say, you can adapt anything, and I'm sure lots of people have.
Oh people will find a way to use the wrong receptacle. Never underestimate the ingenuity of idiots.
With enough baling wire and duct tape, you can jury rig anything.
Yeah, and for those not familiar - the heavy duty ones have to mount to a joist, either directly or with a bracket that spans between two joists. A standard flush light fixture box is often just clamped to the ceiling drywall. You do not want a fan supported only by a couple little ears holding the drywall!
I like to think that when Alec was shooting, he just did a bunch of takes of "which is a different number in kilograms," then shuffled them before the final render.
That would be both hilarious and also make the tedium of editing a little less, well ... tedious lol
I thought you were talking about Baldwin for a second
Whoo whoo now... that sounds like extra work.
@@3nertia Pounds (Earth weight) is a product of the factors kilograms (technically a measure of mass) multiplied by 2.2. Not hard.
@@WJCTechyman Thank you for making a point that wasn't at all connected to what I said in any way ...
This Project Farm video has completely different vibes! Where's the Excel table? Which fan should I buy?
I suppose because Alec didn't say "We're gonna test that". Perhaps he will update us after he gets his 11% rebate back next year to have the correct pricing listed?
Lol
That one! Buy that one!
Very impressive!
Ha!
Fun fact, part of the reason why these numbers are so tiny is because helicopter blades and plane propellers are NOT just giant super fast ceiling fans. Theyre shaped to have the same curve as the wings that produces the pressure differential, and that's part of why they are so kuch more effective
Nope. The impact of those shapes is related to the speed the blades are moving through the air. Ceiling fans typically move very slowly.
The pressure differential is NOT that much of a factor. Airfoils produce lift simply due to Newton's 3rd law of equal but opposite reaction. It's that simple. The shape of the wing ensures that the flow of air over the top of the airfoil is directed downwards as it comes off the trailing edge. This happens due to surface tension causing the air to "stick" to the curved surface as it flows over it. This is also why airplanes at "cruising" altitude must maintain a slight "nose-up" attitude (usually around 2 or 3 degrees or so. . .).
The object on the table next to you being unreasonably massive is such a great recurring gag. This, the fridge, and the dishwasher video all got a good laugh out of me.
I'm glad I wasn't the only one.
Now I wonder how much hidden support is being stuffed under the table, to give the legs a chance?
You just put a ceiling fan under the table and use its thrust to hold the table up.
It's only a matter of time until he gets his whole car on there to complain about lights or something
I'm here on behalf of the effort police and I've got to say that this video has a suspicious amount of effort put into it. Multiple fans? Keeping twisting in mind when doing calculations? A highly sophisticated mounting and measuring setup?
You better believe we will be in touch about this, Mr. Technology Connections, if that's even your real name!
Not to mention the retakes!
why does twisting change the scale reading?
@@mrosskne When you apply torque to a flux capacitor during operation, it causes a twist in the time dilation factor. The associated change in gravitational force causes the scale to fluctuate.
It’s 10 minutes not 100… I think that counts…
He did it for the fans.
10:44 surely you mean the next video ought to be FANtastic?
Underrated comment dad
Ceiling fans should have a special mount, not just a wall box. My brother's medical career was almost cut short when an improperly mounted ceiling fan fell and left a divot in the plywood flooring where he had been laying watching a basketball game only seconds earlier. Saved by the snack!
- shame, coulda saves countless...
- jk... sorry to hear
I’m a fan of this video.
And what's your weight reduction?
I'm only a fan of this video
Yeah ! Blew me !
Is this post a first draft?
Which one?
Dan is the real G
His work really blows us away
You're a fan?
@@renakunisaki No, that's thebowtieguy777
real 🤑
I love this channel during this time of year. Can't wait to see if he's finally found the silver bullet for good-looking LED Christmas lights.
I love how contagious your curiosity is! Technology connections videos get me more interested in the world I live in. Thanks for doing what you do.
Fig Newtons of Force sounds delicious.
I caught that too. Yummy lol
Is that figs on edge or figs laying flat ?
Also this happens to go well with banana measuring. One fig laying flat is the same as one banana thickness 🤔
They're enriched with midi-chlorians.
You’d think… but no. Too many wasp eggs.
Are fignewtons measured in pound as force or pounds as in weight?
5:13 oh yeah, testing in both directions!
thrusting in both directions
@Ditocoaf you looked at my comment and said, "Hey, this isn't no innuendo November... send tweet" 😂
Two of my favorite channels watch each other. Thats so cool.
@@jollyrogerq I've discovered over my years on TH-cam that all the nerds on TH-cam seem to be interconnected. I watch most of them and they all watch each other too lol. We all seem to hang out in the same "corners" of TH-cam xD
Low effort November is my favorit Season of the year
I thought it was no effort November. But now I'm not sure. Since he wouldn't say it in this video for some reason
setting up actual scientific experiments looks a lot of effort though.
This is already lower effort than his previous Novembers so I'm not complaining
@@KinHallen but still more effort than some other "influencers" (though I appreciate that is word that should probably not be mentioned here).
I'm not gonna correct this comment's typographical error out of principal, but I am gonna write a comment about me not correcting it, which seems antithetical to the whole idea of not contradicting the very essence of No Effort November, but, uhhh... Um.
Haven’t known of you for long. But since I’ve discovered dozens of your vids that just:
1) Blew me away!
2) Answered a question I’ve thought about for years!
3) Don’t remember what ‘3’ was.
ANYWAY, U R GR8!
Blown away by fan videos so cliche !
"The fan weighs 11.5 lbs. That's a different number in kilograms."
I love No Effort November.
That joke was funny the first time.
7:59 "I will probably make a video about this fan, specifically, one day..."
Four years later...
"Fan" is an exaggeration. These things are air stirrers.
Also: I loved the "which is a different number in kg" snark. Especially since SI prefers to measur thrust in N.
... where N stands for Notpounds
So what if we got a turbine for the ceiling?
Yes, some of them are really bad.
The ones here are much better than for example the ones with wings made out of metal pipes with some kind of mesh in between.
Thank You for this!
I have always wondered this exact same thing about ceiling fans!
You are a gentleman and a scholar indeed!
Unsure if subtle Chicken Run reference or I just want it to be 😂 1:34
Oh, no question.
And I for one am happy that I'm not the only one who struggles not to switch to a Scottish accent literally every time I say "thrust"!
I really hope it is.
I don't want to be a pie! I don't like gravy.
I WAS JUST GONNA POST THIS!!!! DAMN YOU
You heard it too!
I don't know the reference, but he definitely said that bit in a particular way.
I never wasted money buying into those fancy ceiling fans! So glad I just ducktaped a Cessna 172 to my roof.
My man got his reuse down.
I was waiting for a small plane to crash into my building so I could repurpose the engine and prop for cooling. Problem is the flames just got worse the faster I ran the motor...
@@davidg3944 This is fine.
Your family must be exhausted
Whatever else he learned, I'm glad Alec saved big money when he shopped Menards.
Possibly even a number of percents between 10 and 12!
😬
In store credit only there are rules you know
"he?" guess you missed the vid awhile back. Alec is transitioning
hopefully 11% off!
Thanks for subtitles and also being pro to mention metric measurements!!!!
Surprised you didn’t get a Kill-A-Watt in there and compare thrust to power!
I resist this notion.
Too much effort for November
Too much effort.
Or how this relates to latent heat of condensation/evaporation....
@@woodcat7180 His worst No Effort video was the one where he reverse engineered lava lamps. Way too much effort.
I finally understand the difference between the imperial and the metric system. Thanks, TC!
Yes. Me too. One is a different number than the other. Way cool!
@@busimagen The difference is mostly units of measure of volume, if I recall correctly. That and possibly units of length smaller than an inch, which no one actually uses in the normal course of events.
The Imperial system is basically just 'every specialised unit of measure of things relevant to a specific field, standardized such that unit X is always unit X, with people then prefering to reuse existing units rather than create new ones if the existing units were sufficient to their new task'. Over time some fell out of use as the specialty they came from was less significant, and then sometimes things were rationalized a bit when that left gaps that became an issue later. Imperial units are Very Good at the things they're intended for, and Terrible at everything else, and conversions are a pain.
US customary units Started Out as British Imperial units, but then things happened.
SI units (kind of sort of metric but not exactly) are intended primarily for scientific applications, and for stuations where great precision is needed, as well as to minimise, simplify, and/or eliminate conversions wherever possible. Officially only the base units and multiplying or dividing it by 1000 are actually Things in SI, but you'd be hard pressedd to find a country that uses the metric system that doesn't add additional units for practical reasons: Centimetres (1/100th of a metre) are pretty much universal, for example. Some places use decilitres (1/10th of a litres), most places will use teaspoons (5ml), tablespoons (10 or 15ml depending on country), and cups (250ml, or 1/4th of a litre, or 200ml, or 1/5th of a litre, depending on where you're talking about... good odds on one of those having it's origin in American units and the other in British, though it's quite possibly unrelated, but it's very confusing when you end up with the wrong one!) for cooking because it's just substantially more practical for things of that scale for that particular application. ... and don't be surprised if you find the occasional stray imperial unit still floating around for certain niche applications.
I don't see why anyone needs to know the metric system anyways. I'm glad he's using the objectively better system.
In the spirit of Not Going To Look That Up To Verify November, I think I read in my homeowners electrical guide that recent code change requires all ceiling boxes to be fan rated for the idea that why have a lightweight type for lights if some day a fan is wanted. Install now instead of retrofit later
THANK YOU for telling me about reversing fan directions! I have been suffering for YEARS in the summer because I never knew my ceiling could do that! Winter time circulation, here I come!!!
Extra fun fact about the tail rotor, it makes the helicopter crab sideways in cruise flight.
So now we just need to add a third rotor pointing in the opposite direction to the tail rotor, which we place at the centre of mass!
@@AnT508 that will add another torque, so we need to add fourth one to counteract this.
@@norbert.kiszkawe should add a fifth one just because 5 is prime.
We need a 6th because although 5 is prime it is also odd and therefore there is an excess force we cannot counteract
@@norbert.kiszka And suddenly we’ve invented the quadrotor, not known for space efficiency. Or the V-22, not known for safety.
I feel like this needs to spawn its own spin-off series just investigating random questions about things from home improvement stores. Maybe we should test how much thrust is produced by a shop vac next
Leaf blower next!
We could call it "spin-off"
Ok we know this comment is from Adam Savage former MythBuster going through MythBuster withdrawal again 🚬👽🚁🌪️🇦🇺
11:37 Oh no! Now he's turning INTO A FAN!
😂😂😂😂😂
Gold comment
True og watches the credits
Thank you for doing this.
I too have had this question but you took it a step further and actually tested it haha
Much appreciated
The Emerson Heat fan was the very first ceiling fan I saw. My grandmother had one put up in her living room when I was very little (sometime in the mid to late 1970's) and was in her home when it was sold in 2000. Never had a day of problems. I don't know if it was suppose to be reversible but hers was. It looked just like the one in the video. Thanks for the nostalgia as I had not thought about her house in a very long time.
Careful, fig cookie bars is a unit of pressure, while fig newtons is a unit of force. You need to multiply or divide by the area of said fig bar in order to convert between the two.
This is exactly the sort of comment that belongs on TC videos.
@benphillips4928 Not to mentiom that a cookie is just a cookie, whilst Fig Newtons are fruit and cake...
10:24 my takeaway is not that you put effort into every video but that your content still shows a lot more production value than 99% of youtube DESPITE the lack of effort
AKA youre a natural
Literally the question burning on my mind for the past two days. Such good timing!
"which is a different number in Kilograms" is my new favorite bit
For anyone who didn't already know, "jerk" is indeed the proper scientific term for increase or decrease in acceleration, just like acceleration is the term for increase in velocity. I don't know how many more layers deep it goes.
They're less used, but the next is jounce or snap, and then after that got the obligatory crackle and then pop.
An infinite number of layers, like any continuous function.
The next three are snap, crackle, and pop
@@handlesarecringe957 the three after crackle are pop, lock and drop (at least unofficially)
Are there any real world uses of these extra terms?
"Which is a different number in kilograms" gave me a much-needed LOL!
DAN DA FAN MAN
Through the magic of imploring via two different videos...
I implore you to release Technology Connections branded socks, with the tagline 'Through the magic of buying two of them'.
I love it.
Saw the last comment, seconding my like
I second this.
Again.
God damn it now I want a pair lmao I saw your first comment too lol
Thirding! So happy to see this comment again 😅
So I’m a certified scale technician, and I would love to offer some of my experience in this field to help setup experiments like these. I would suggest that instead of using a hanging scale maybe you can flip everything over and anchor the fan to a floor scale which will give you a more stable reading and I could provide an indicator that will zero out after placing a load on the load cells. If you use a 4x4 platform with a load cell in each corner and wired to a junction board and then the indicator the you got a sturdy base
That is a good idea for January to October...
Valid points but possibly in conflict with the theme of "no effort November"
A problem with that solution is that when you have a plaform below the fan, the air coming from the fan will push/pull on the platform it self, cancelling out a big part of the "thrust".
But it would work if you replace the platform with a large frame instead (which is much larger than the fan diameter, so the air can pass thru unaffected), that has it's corners resting on the load cells. Then attach 2 thin wide beams to that frame, going thru the middle of it, with their flat sides vertically (so they "cut the air" with neglectable area perpendicular to the flow) at which the fan in turn is attached to.
If the fan gets too close to the floor, the thrust may increase slightly though - due to a high/low pressure zone building up when the the in/outflow to the fan gets restricted
- but the same thing will happen to a fan mounted close to the ceiling. It even happens to a helicopter very close to the ground (it get slightly more lift there compared to when it has gained some altitude). So that's more a question of what one wants to measure.
But the load cells and corners on the frame can be placed on top of something, for example 4 stools to get a "free air" measurement, like he did here.
yep, get it out of ground effect.
@@Speeder84XL Fans operate with a ceiling nearby so this reverse setup is actually more accurate to the real world scenario.
TechnologyConnections finally featuring ceiling fans AND featuring Dan Spiffy Neuman?? This is the most effort I've ever seen put into No Effort November
I got to, you're the only person that can teach me about the most mundane things while keeping it entertaining. I love your channel for that. Thank you for putting in the effort for your videos. Even on no effort November lol.
4:04 My computer Blue Screened right here so I thought it was part of the video so I thought you were mental mathing and derped out
I’m impatiently awaiting the heater fan video
Ah, so it's actually Dan's Effort November!
I love that all the questions I’ve had, you keep having the same and answering them!
This is the kind of hard hitting journalism I didn't know I needed.
FYI, since your curiosity was triggered by planes and choppers, and after 30 seconds of güügling:
-- A small airplane requires about 500 - 1,000 Fig Newtons to fly.
-- A small chopper requires about 5,000 Fig Newtons to hover.
These figures are leaving out a LOT of detail ... just intended to give an idea compared to your results.
Really fun vlog. Thanks!
@@svenlima Can't tell if you're joking. All referenced in the video, and I'm playing it up a little. 😎
how many strawberry fig Newtons do I need for a drone?
I guess it all depends on how efficient the caloric conversion is.
@@Robbie-mw5uu Probably a pack of fig newtons.
Oh my god I have those heater fans in my living room! I don't have any way to turn on the heat but I always wondered why the fans look the way they do! My house was built in 86 though and my ceilings are very high so it would make sense to use them.
I am a new FAN of this channel. Also, thanks for reminding me to swap the direction of my ceiling fans! *Alexa, remind me to swap it again in 6 months*
10:04 which November based event are we talking here?
No no, we don't do the startup jerk force until December
Remember remember no effort November. Balafire, fryers and fans.
This is something I unironically thought of many times, thanks for answering my unasked question! XD
Missed opportunity to say “Christmas time is going to be FANtastic”
Thinking up the pun would have been effort.
10:47
It's so fun to see frequent updates from this channel. TechnologyConnections always makes me smile, perfect for a dreary North-Eastern November.
I didn't think Alec was such a FAN of these unnamed things, but his energy for this intro is unmatched.
Glad to see you using no effort November to interact with your fans. Not all TH-camrs appreciate their fans.
I don't know about a ceiling fan by itself, but a ceiling fan attached to a microwave and a hamper can take a toaster to mars.
😮
while I get what movie you are referring to, I feel like if anyone was crazy enough to try and built some kind of rocket with a microwave it would be Styro Pyro.
That joy sounds like Dan is about to get some Tru-Tone bulbs.
TC should make a couple of videos related to fans. There are several questions he can explore.
1. In summer, which fan cools the room better / faster ? A ceiling fan that blows air up/ down or a standing fan that moves air sideways (possibly to outside of the room).
2. Does having two fans push air simultaneously downwards ( or upwards) work better to circulate the air than having each one push air in the opposite directions?
3. Does having an air-conditioner work together with a fan better than just air-conditioner alone?
4. Say you have 2 rooms connected by a door. One has windows that are exposed to summer daylight, and the other one is not. What's the best way to cool both rooms? Treat them as 2 individual rooms ( ie keep the door closed) or as one big room ( door is opened)?
1 is easily answerable with a google search; I'd love to answer it here but we don't have ceiling fans here so even though I saw the answer before I didn't bother memorizing it
Those low speed high velocity style fans for industrial use are kinda terrifying but awesome to have. At an Autobody shop I was working at, it was built into a building that was initially used as a warehouse. We have ceilings that were around 35 feet high so they got these fans from the brand "big ass fans" each blade was probably about 12 feet long and a foot wide. They were massive and if you turned it up it went WORRYINGLY fast but boy did that thing move air. Whenever we were welding or applying blackout tapes or stickers to cars we'd have to lower the fans down to like 5 or 10% speed because if we didn't it would blow away the shielding gas and make the stickers flop around like you were working outside on a moderately windy day.
I've seen that brand before! They had them in some spots at Gardens by the Bay in Singapore. I thought the logo was funny.
My God, did they make a difference in the blasted tropical climate.
Man, "high velocity low speed" is an oxymoron if I've ever seen one. =)
FWIW they're actually called high-volume low-speed fans.
@jubuttib oh shit that's totally what I mean to type lol
@@jacobtuley2573 Hehe, to be fair he did say "high velocity low speed" in the video, I'm sure it stuck from there. =)
I have installed Big Ass Fans in a large warehouse space and they do a fantastic job. Consume a LOT of energy but it's worth it.
5:03 ok, I’m through with all these silly units like “horsepower” and “Watts.” I’m quoting all my power figures in cookie bar meters per second from now on.
Yeah I prefer "goatpower" and "Whose" instead.
You deserve an IG Nobel prize, or at least a nomination ! And I would vote for this research ! I'm a big fan !
Fun fact: helicopters are immensely harder to fly than fixed wing even with the spinny thing on the tail. My CFI told me I was a natural pilot, my rotorcraft instructor did not.
CFI stands for Ceiling Fan Instructor, right?
NO-ONE is a "natural pilot" of a helicopter. Their principle of operation goes against the very laws of nature!
@@toweri_li what? no they don't. nothing that exists goes against the laws of nature.
@@toweri_li Yeah you are basically fighting physics the whole time.
@@toweri_li Helicopters do not fly. They are just SO SO UGLY that the earth just naturally repels them.
One wind turbine asks another;
"Do you like music?"
The other tubine says;
"Yeah, I'm a huge metal fan."
I’m a big “fan” of this “fan”-tastic video! “Cool” to see a fellow fan enthusiast Dan and his wealth of knowledge on ceiling fans featured here. Can confirm myself that Envirofan Goldlines are among the best industrial ceiling fans one can buy :)
I agree!
A friend has a smaller Envirofan (I'd say 36in inch) installed in the bedrooms of their house. They are terrifying when turned on, but they really blow! The reason they haven't been replaced is that the previous owners of the house, for some reason, installed them hanging off of a hook driven into a ceiling joist instead of using a box.
@@NJRoadfan thats the normal way to install industal fans, eyehooks
Whoa you just made me remember we had a ceiling fan with a space heater in it at our apartment couple years ago. Worked pretty well
4:26 "which is a different number in kilograms.."
This is the worst trolling to happen to Europe since the 40s.
[Insert OnlyFans joke here]
Haha
You said “insert” 😂😂😂😂😂😂😂
flat
You will feel blown away
Ba-dum tiss.
I can't wait until this turns into a viral back-and-forth between science TH-camrs who will say, "but you need to account for (proximity to the ceiling, proximity to the ground, ground effect, etc... I'm not a science)". Like the whole series about electricity between Smarter every day, Veritaseum, and Electroboom.
Action Lab will install one in an elevator in which a drone is flying
Smarter Everyday is probably still getting reaction videos about the mistakes in his gyroscopic precession in helicopters video
Mould will mount water bottles on it and challenge people to predict the shape of the water trails.
Vsauce enters the chat:
But what IS a fan?!
Ah, that happened eh?
I've never watched electroboom, I stopped watching Veritasium over his smug wrongness, and I stopped watching Smarter Every Day over his kooky support for religious exploitation, disgusting family dynamics, and anti-science.
Things I didn't think I needed to know. I love this channel
1:49 Save big money at Menards 🎶
When shopping for a home appliance or two. The savings will always come right back to you.
Save big money
Save big money
When you shop Menards.
3:15 I appreciate the effort that was put into converting to not silly measurements for no effort November
Yes, newtons are clearly superior to pounds. /s
0:11 That joke went right over my head. Ba Dum Tiss!
i don't get it
wait now I get it, they like ceilings because they're architects
@@lordzuzu6437 architects like ceilings, they are fans of ceilings, they are ceiling fans.
@@DatNerddSwaqq omg, now i get it, lol ty
@@DatNerddSwaqq In the spirit of no-effort November, I didn't even think about it, and therefore didn't get it.
Of course the fridge enthusiast has a friend that's a ceiling fan enthusiast.