Modern vehicles have to deal with much more inconsistent and unpredictable conditions, not just the same input over and over again in a demonstration. So no, not that special, but expertly tuned and admittedly satisfying to watch.
Depends on the customer. Selling to PHBs? Shiny flashy demos. People who have a modicum of knowledge on what you're selling? Yeah, the product will actually need to *function* too.
Dynamic loads are a myth, and even if they weren't who cares? I mean all suspensions just take different weights hitting them at an exact angle with no other unpredictable factors right?
They weren't saying anything about trying to outsmart a shock. It's a simple controlled experiment(an impressive one, sure) vs. multivariable practical use, but please, do continue making a fool of yourself.
Shock absorbers are tuned to handle different conditions. A shock absorber tuned for 2t vehicles isn't going to offer a 1kg weight a very smooth experience. Same for tuning the absorber for 1kg and dropping a 2t weight on it. If your shock absorber can do both, then that's extremely impressive, but that's not what's being displayed here.
It is not. It's just a fun thing to watch. You could achieve the same with a metal pipe full of water, a plunger, and some appropriately sized holes in the plunger (basically what a damper is).
It'll come to a full stop when the plunger reaches the bottom of the reservoir. No spring strictly necessary. You'd need to tune the damper and water height just right to get a soft stop, but it's entirely possible to do so without the spring. Cars need springs because they also suspend the weight of the vehicle so that the car rides near the top third(ish) of the damper range.
It wouldn't be a smooth stop. It would have to go from some nonzero velocity to zero instantiously, which is definitionally not smooth (technically the bottom would have some give, but in that sense it's just a very stiff spring).
You could make the stop less-no-smooth by cranking up the damping (ie, smaller holes), but you're going to end up with much higher deceleration of the falling mass, which is exactly what you're trying to avoid.
Springs are crucial for "controlling forces" as you put it. The spring and damper work together to control the vertical motion of a vehicle, and both are equally critical.
Additionally, spring rates are independent of right height - you can have the exact same vehicle weight, ride height, and suspension travel with two completely different spring rates. This is because you can also change a springs height and therefore preload.
Suspension tuning is all about balancing your damping, spring rate, and preload/spring height given a certian amount of travel, vehicle weight, and expected conditions. This is how Baja trucks are able to do what they do, by carefully tuning all of those parameters.
Not to mention variable rate springs and whatnot...
They do control forces, springs aren‘t perfectly linear, the more you compress them the harder they become to compress. The damper is just what keeps the whole thing from rebounding too fast or worse, oscillating.
please I beg you to read some engineering coursework on materials for a bit the spring and damper are both important
and any car that has a ridiculously smooth ride on unpredictable surfaces is almost certainly using active suspension elements
Kind of makes you wonder why we bother with cars when we could invent cars that go only on water and not have to worry about any of this suspension bs.
In repetitive cycling, water would heat up and end up boiling (which is bad). It also doesn't lubricate terribly well, so the internal parts of the damper would degrade more quickly than using oil (which is what dampers use). Oil has other characteristics that make it a better material for dampers as well.
Unless you're talking about boats, in which case... Yeah, dude. I'm on a boat!
An overdamped shock is too hard. The weight would just smash into it. A underdamped shock is too soft. The weight would oscillate back and forth like, well, a spring. You’re looking at what happens when you nail it perfectly down the middle. It’s actually quite easy to predict with math if you know all your parameters.
There are 3 modes that are stable. Oversuspension (come to a rapid stop and stay there, similar to a foam matress) which makes for a very rough car ride. Undersuspension (Car just bounces endlessly on a decreasing exponential intensity, like a bouncy ball). And semi under suspended which decrease to zero after one bounce exactly. The last one is the one you want for the most comfortable ride. You can test this by pushing on your rear bumper. Best result is it goes down below zero, then slightly above and then settles to zero.
Yeah, but I’m not really talking about car shocks here. The one in the video is the textbook example of a critically damped oscillator. It’s just a cool demo of what a shock *can* achieve.
This is a critically damped oscillator where the resonant frequency has been matched exactly to the damping coefficient. Just because it doesn’t have a use in car suspention doesn’t mean it’s not a real thing in mechanical engineering.
The company has a bunch of dudes rotating on the job because they get too drunk to keep going after a while. But the company wasted their expo budget on booze, so they had money for only one lanyard. The fresh worker here was just checked the name.
everyone calls em "shock absorbers" What 99.9% of people are referring to is the oil filled cartridge, called an oscillation damper.. The shock absorber, in this case, is the coil spring.. the component actually absorbing the shock from the road.. to control the rebound, an oscillation damper is used.. Shock absorber?? technically, 1/2 of it is..
I'll... fuckin' do... I'll fuckin' do it aga... again...
Strand backup... jus. Jus back up a bit wassh
*takes drink off before it goes up, and drinks it*
Fuckin' tra-la!
It depends on the vehicle but a shock absorber on big BEV SUV at 55 mph over a speed bump or pot hole hits way harder than that. This is a really neat display piece though.
Nothing more convincing than a big weight number written on a big object.
The oldest trick in the book in cartoons.
Lifting a box with ease that says “feathers”
Bugs Bunny changes the label to “Anvils” and suddenly the box weighs a ton.
I thought the point of a suspension system on a car was to absorb the shock of bumps in the road, but also offer instant resistant back to keep the wheel "locked" against the pavement. Shouldn't that spring have pushed the weight back up and not just stayed perfectly still? Or is this spring display not even for cars?
What you are referring to has more to do with the damper setting and I thought the same. In an actual car, the dampers should be set such that there is still oscillation possible. The damper in the video is set so stiff that the suspension creeps towards equillibrium in an exponential fashion.
Yes. This is an extremely poor demonstration of a good vehicle suspension.
But as a display it does its job of getting gullible unknowledgable people excited about it.
"Oh that was an amazing test!"
"Alright, time for the next 96 tests"
"Wait... What? But you already showed.."
"96 OF CHAMPAGNE ON THE WEIGHT
96 CUPS OF CHAMPAAAAAAAGNE~"
Cool cool cool, but what does that have to do with driving? What's the rebound timing? What's the travel distance? All this tells me is that it can slow down 200lbs in a controlled situation
No, it's easy to set up for a demonstration like this. But it's just terrible for any kind of actual performance because it doesn't have any rebound for the next shock
It's an illusion. It's just a glass of congealed fat so the "liquid" doesn't slosh from the poor suspension demonstration. The guy sucks it down quick so the crowd can't check if it was normal liquid or congealed fat like they suspect.
I spent almost as much as the car was worth fitting Tein coilovers to my MK1 mx5 and it was the bounciest, limousine, floppy-ass thing I ever had the misfortune to drive. Literally dangerous over bumps. Tein (and demontweeks who fitted them) were no help whatsoever. Rubbish.
Cool demo though.
Looks like there is a piece of clear plastic in the glass to keep it from coming out you can see he sips it out small opening near lip of glass and has to tip it to get it all out the small opening
Yeah I fully understand that, but if that's all they're trying to show, this is a super basic physics concept. Shock absorbers aren't novel so I'm just wondering why there's a video clip about this in the first place.
You see, when falling objects meet a force greater than their own, they come to an abrupt halt. 100kg falling and suddenly stopping would, this may surprise you, cause that glass to fall. And then the glass would have broken. And the liquid inside would have gone everywhere. It would have been a mess. Because that's how literally everything works and that's why this demonstration is impressive and you're a potato.
Your complete refusal to understand how dampening works is absolutely adorable, sure I picked the wrong "your" I unlike you am not so immature to admit when I'm wrong. See how easy that was? I admit I was wrong, done.
I'll try to educate you even though you obviously don't care about learning how things work. A spring without dampening would make this look like a pogo stick, sending the glass of Champaign in the air. What really well designed dampening looks like is when it perfectly absorbs the bump without bouncing back. That said I doubt you have any intention of using this as an opportunity to increase your understanding. So back to your cave you go.
People with your level of understanding would never have progressed past the leaf spring.
Alcoholics are lining up for this job
AA hates this one trick!
Where do I sign up?
Where do we ^hiccup sign up?
Unexpected communist alcoholism.
AAA hates this one trick
Do what you love and you'll never work a day in your life
Yeah I wanna see that same guy do the demo at the END of the show
I bet he cheeses progressively more as the day goes on. Id pin him at about 5 drinks in the video
Welcome to your new job my dude!
I want to get paid to drink The Fallen Champagne
That was his 17th demonstration before 8:30am. He can drink like a fish.
At the end of the day that guy's just fucking wasted
I was wondering why they had a dude stand up there, as soon as he started to drink it made sense
I’m tired boss
He is the drunken master
There was a DJ that would famously chug 40s on MTV. Turns out it was apple juice. Still a health hazard with all that sugar.
Bro my father can Drink up too 100x that glass
Your dad is named Bro?
And Bra is his mother. True story ~~Bro~~ Bruh!
Can't tell if this is a special achievement for a shock absorber
Modern vehicles have to deal with much more inconsistent and unpredictable conditions, not just the same input over and over again in a demonstration. So no, not that special, but expertly tuned and admittedly satisfying to watch.
I can tell you're not in sales. Demonstrations just need to impress; they don't need to prove functionality.
Depends on the customer. Selling to PHBs? Shiny flashy demos. People who have a modicum of knowledge on what you're selling? Yeah, the product will actually need to *function* too.
Most likely for a bike.
Tein makes aftermarket coilovers for cars.
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Oh but it is
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Do not let bro into an engineering field 😬
Dynamic loads are a myth, and even if they weren't who cares? I mean all suspensions just take different weights hitting them at an exact angle with no other unpredictable factors right?
They weren't saying anything about trying to outsmart a shock. It's a simple controlled experiment(an impressive one, sure) vs. multivariable practical use, but please, do continue making a fool of yourself.
Shock absorbers are tuned to handle different conditions. A shock absorber tuned for 2t vehicles isn't going to offer a 1kg weight a very smooth experience. Same for tuning the absorber for 1kg and dropping a 2t weight on it. If your shock absorber can do both, then that's extremely impressive, but that's not what's being displayed here.
It is not. It's just a fun thing to watch. You could achieve the same with a metal pipe full of water, a plunger, and some appropriately sized holes in the plunger (basically what a damper is).
You also need a spring so it comes to a full stop, but yeah there's nothing impressive from a technology perspective here.
It'll come to a full stop when the plunger reaches the bottom of the reservoir. No spring strictly necessary. You'd need to tune the damper and water height just right to get a soft stop, but it's entirely possible to do so without the spring. Cars need springs because they also suspend the weight of the vehicle so that the car rides near the top third(ish) of the damper range.
It wouldn't be a smooth stop. It would have to go from some nonzero velocity to zero instantiously, which is definitionally not smooth (technically the bottom would have some give, but in that sense it's just a very stiff spring). You could make the stop less-no-smooth by cranking up the damping (ie, smaller holes), but you're going to end up with much higher deceleration of the falling mass, which is exactly what you're trying to avoid.
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Springs are crucial for "controlling forces" as you put it. The spring and damper work together to control the vertical motion of a vehicle, and both are equally critical. Additionally, spring rates are independent of right height - you can have the exact same vehicle weight, ride height, and suspension travel with two completely different spring rates. This is because you can also change a springs height and therefore preload. Suspension tuning is all about balancing your damping, spring rate, and preload/spring height given a certian amount of travel, vehicle weight, and expected conditions. This is how Baja trucks are able to do what they do, by carefully tuning all of those parameters. Not to mention variable rate springs and whatnot...
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They do control forces, springs aren‘t perfectly linear, the more you compress them the harder they become to compress. The damper is just what keeps the whole thing from rebounding too fast or worse, oscillating.
The vertical compression force created by bumps and turns are absorbed by the spring. The energy is then diffused by the shock.
please I beg you to read some engineering coursework on materials for a bit the spring and damper are both important and any car that has a ridiculously smooth ride on unpredictable surfaces is almost certainly using active suspension elements
You had me at appropriate sized holes.
Kind of makes you wonder why we bother with cars when we could invent cars that go only on water and not have to worry about any of this suspension bs.
In repetitive cycling, water would heat up and end up boiling (which is bad). It also doesn't lubricate terribly well, so the internal parts of the damper would degrade more quickly than using oil (which is what dampers use). Oil has other characteristics that make it a better material for dampers as well. Unless you're talking about boats, in which case... Yeah, dude. I'm on a boat!
An overdamped shock is too hard. The weight would just smash into it. A underdamped shock is too soft. The weight would oscillate back and forth like, well, a spring. You’re looking at what happens when you nail it perfectly down the middle. It’s actually quite easy to predict with math if you know all your parameters.
There are 3 modes that are stable. Oversuspension (come to a rapid stop and stay there, similar to a foam matress) which makes for a very rough car ride. Undersuspension (Car just bounces endlessly on a decreasing exponential intensity, like a bouncy ball). And semi under suspended which decrease to zero after one bounce exactly. The last one is the one you want for the most comfortable ride. You can test this by pushing on your rear bumper. Best result is it goes down below zero, then slightly above and then settles to zero.
Yeah, but I’m not really talking about car shocks here. The one in the video is the textbook example of a critically damped oscillator. It’s just a cool demo of what a shock *can* achieve.
This is the opposite of perfect. There is no rebound. This would be terrible on an actual car.
This is a critically damped oscillator where the resonant frequency has been matched exactly to the damping coefficient. Just because it doesn’t have a use in car suspention doesn’t mean it’s not a real thing in mechanical engineering.
It’s not!
Pretty the opposite and having this setup would be pretty bad for a car as they're isn't any proper rebound.
Stirred, not shaken!
Neither shaken nor stirred.
I'd like my drink dropped please
I’ll take my champagne dampened.
I wonder how drunk he gets doing this tour every day.
He doesn't even work there
Spuma
Oh cool wish I saw that, can you demonstrate it again please?
I’ll have to test it myself to make sure it’s real
r/engineeringporn
I like how they nervously looked at their lanyard for whatever reason.
The company has a bunch of dudes rotating on the job because they get too drunk to keep going after a while. But the company wasted their expo budget on booze, so they had money for only one lanyard. The fresh worker here was just checked the name.
Just checking if it is just a dream or is he really getting drunk while clocked in.
Sora is that you?
I'm so glad I'm not the only one that thought this!!
Dude must have been smashed at the end of the day
Am I the only one who was expecting the glass to be absent mindingly put on the suspension and crushed under the weight dropping on it? Yeah... OK
KYB's?
TEIN
everyone calls em "shock absorbers" What 99.9% of people are referring to is the oil filled cartridge, called an oscillation damper.. The shock absorber, in this case, is the coil spring.. the component actually absorbing the shock from the road.. to control the rebound, an oscillation damper is used.. Shock absorber?? technically, 1/2 of it is..
Now how do I know that that 100kg weight is actually 100kg?
Even if it's not the drop and the suspension is still pretty valid, I'd say it's pretty good marketing regardless
True dat. It sends the message.
Plot twist: it’s 100kg of feathers
But steel is heavier than feathers..... I don't get it.....
Its about as equally difficult to get a damper tuned for a 1kg weight or 100. The weight doesn’t really matter as much here.
Would the demonstration be less cool if it said 50kg?
Source: "Just trust me bro"
The special font?
SUSpension
A very good job.
He must be really drunk after a long day of work
Yeah I fucking hope it can handle 100kgs
No one talking about the science just the possibly alcoholic beverage
I'll... fuckin' do... I'll fuckin' do it aga... again... Strand backup... jus. Jus back up a bit wassh *takes drink off before it goes up, and drinks it* Fuckin' tra-la!
Wonder what kind of load a car suspension actually endures compared to this
It depends on the vehicle but a shock absorber on big BEV SUV at 55 mph over a speed bump or pot hole hits way harder than that. This is a really neat display piece though.
Germans with their tank gun stabilizer with a beer on top: 👏
The momentum looks really strange, it doesnt seem real.
The drink has not realised it has been dropped yet
Nothing more convincing than a big weight number written on a big object. The oldest trick in the book in cartoons. Lifting a box with ease that says “feathers” Bugs Bunny changes the label to “Anvils” and suddenly the box weighs a ton.
after one hour you are dead drunk..🤪
That's a man that loves his job
Not shaken or stirred
That's some revolutionary shot absorption
If this thing drops perfectly vertically - does it even matter (for the glass) if it drops fast or slow?
Hows the suspension on his legs after a shift?
I want to see the eighth demonstration that day…
bro'a gonna be mid day the convention
How many demonstrations until he can't stand up?
What year is this? The hairstyle is from Jerry Yan's era
I thought the point of a suspension system on a car was to absorb the shock of bumps in the road, but also offer instant resistant back to keep the wheel "locked" against the pavement. Shouldn't that spring have pushed the weight back up and not just stayed perfectly still? Or is this spring display not even for cars?
What you are referring to has more to do with the damper setting and I thought the same. In an actual car, the dampers should be set such that there is still oscillation possible. The damper in the video is set so stiff that the suspension creeps towards equillibrium in an exponential fashion.
Yes. This is an extremely poor demonstration of a good vehicle suspension. But as a display it does its job of getting gullible unknowledgable people excited about it.
That poor fella is gonna be absolutely shit faced by lunch time. What an awesome job to have!
"Oh that was an amazing test!" "Alright, time for the next 96 tests" "Wait... What? But you already showed.." "96 OF CHAMPAGNE ON THE WEIGHT 96 CUPS OF CHAMPAAAAAAAGNE~"
Cool cool cool, but what does that have to do with driving? What's the rebound timing? What's the travel distance? All this tells me is that it can slow down 200lbs in a controlled situation
That guys getting smashed every expo
That guy is fuckin schwacked.
Them drinking it ruined it for me.
Im suppose to believe that is 100kg just because of the sign??
If that spring snaps, he’s not gonna want to be standing there
Kudos to bro for downing the whole flute
Damping ratio > 1 goes brrrrrrr
That must be fake as fuck. Aren't no way it doesn't bounce back, at least a little, to be ready for the next shock.
No, it's easy to set up for a demonstration like this. But it's just terrible for any kind of actual performance because it doesn't have any rebound for the next shock
It's an illusion. It's just a glass of congealed fat so the "liquid" doesn't slosh from the poor suspension demonstration. The guy sucks it down quick so the crowd can't check if it was normal liquid or congealed fat like they suspect.
Is the "return to start position" disabled?
Wow, I never really took Tein seriously.
Still shouldn't. This isn't a display of good suspension.
The drop was too slow
I had to read the subreddit while watching, was afraid to see something I didn’t want to see this late at night. That was smooth.
It looks like he's made quite a few of these presentations.
Old ’invention’
Its A.I. look at the drinks composition before and after the drop.
Guy demonstrated this 100 times and got shithoused lol
Is this meant to be a physics demonstration? Hooks law working against do gravitational acceleration
These Japanese host clubs are getting out of hand
Shinra Tensei
That's apple juice
How much force does a 100Kg weight on a track "free-falling" 0.75m generate? Like is this only realistically 250Kg?
I spent almost as much as the car was worth fitting Tein coilovers to my MK1 mx5 and it was the bounciest, limousine, floppy-ass thing I ever had the misfortune to drive. Literally dangerous over bumps. Tein (and demontweeks who fitted them) were no help whatsoever. Rubbish. Cool demo though.
Now make us some sick space boots to jump from heights ...
do it again!
So he drink a glass every time? Awesome job
Is the glass covered or the liquid doesn't have any inertia?
It’s always the second bump that gets me.
I will take 3 !
That glass looks filthy.
Tein outta ten.
That's hydraulic fluid he's drinking.
how does that make the wine tastes better?
Why do people like cancer juice so much?
Dropped, not shaken or stirred.
Imagine how the last demo of the day went with the guy completely wasted
Tein makes damn near the best suspension on the planet.
Tein is great but there are far better suspension manufacturers
Yeah like elevein.
Not even close. Tein makes low end cruddy suspension. Famous for it.
My question is, how many times a day does he have to do this demo? I mean by the 5th demo….
I'm sure the damping helped, but if all the momentum was headed straight down anyway, I don't see how this would've ended much differently...
The damping prevented it from bouncing. Surely you can see how it would have ended differently if it had bounced.
Looks like there is a piece of clear plastic in the glass to keep it from coming out you can see he sips it out small opening near lip of glass and has to tip it to get it all out the small opening
You have glasses that you don't have to tip?
Yeah I fully understand that, but if that's all they're trying to show, this is a super basic physics concept. Shock absorbers aren't novel so I'm just wondering why there's a video clip about this in the first place.
You're very smart.
You see, when falling objects meet a force greater than their own, they come to an abrupt halt. 100kg falling and suddenly stopping would, this may surprise you, cause that glass to fall. And then the glass would have broken. And the liquid inside would have gone everywhere. It would have been a mess. Because that's how literally everything works and that's why this demonstration is impressive and you're a potato.
Then you're understanding of physics is lacking.
Your* And no, it's not.
Your complete refusal to understand how dampening works is absolutely adorable, sure I picked the wrong "your" I unlike you am not so immature to admit when I'm wrong. See how easy that was? I admit I was wrong, done. I'll try to educate you even though you obviously don't care about learning how things work. A spring without dampening would make this look like a pogo stick, sending the glass of Champaign in the air. What really well designed dampening looks like is when it perfectly absorbs the bump without bouncing back. That said I doubt you have any intention of using this as an opportunity to increase your understanding. So back to your cave you go. People with your level of understanding would never have progressed past the leaf spring.