Suspensions Explained
Suspensions Explained
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The definitive guide to Anti-Dive and Anti-Lift in suspension systems. What it is and how it works.
Anti-Dive and Anti-Lift in vehicle suspension systems are often some of the most mis-understood aspects of the design. This video shows exactly how they work, how to calculate the math associated with them and how we can use them to our advantage.
Chapters:
Introduction 0:00
The Basic Concepts 0:38
An Example Car 2:20
Calculating Spring Deflection 3:20
Anti-Dive 4:15
The Geometric Method 5:43
The Instantaneous Radius Method 6:52
Comparing The Methods 7:47
The Ideal Anti-Dive Line 8:12
Calculating the Anti-Dive 10:16
Anti-Lift 11:23
Why Do We Care? 12:23
Using it to Our Advantage 13:33
Huibert Mees
Suspensions Explained
Music: Bensound.com
มุมมอง: 1 498

วีดีโอ

Why Some People Are Scared of Brake By Wire But Shouldn't Be.
มุมมอง 1.1K21 วันที่ผ่านมา
Why are some people scared of brake by wire systems? This video dives into the inner workings of what many are calling brake by wire and explains it all. How does it work? What happens if something fails? This video provides the answers. Chapters: Introduction 0:00 The Impact of Regen 1:32 Kinetic Energy 2:20 Terminology 4:00 Dual Hydraulic Systems 5:26 Normal Operation 7:17 What if Something G...
Why Lowering Your Car Can Result In MORE Body Roll
มุมมอง 2K4 หลายเดือนก่อน
Lowering your car can result in MORE body roll rather than less because the suspension roll centers are lowered. Even though the center of gravity is also lowered, there will likely still be more body roll. This video explains why that is true. How lowering your cars effects suspension roll centers: th-cam.com/video/LjCVGPEjTXo/w-d-xo.html How to find the roll centers of a suspension - Part 1: ...
Thinking of Lowering Your Car? Watch This First.
มุมมอง 2.3K4 หลายเดือนก่อน
What happens to the suspension roll centers when you lower your car? Will your car handle better or is it just for looks? What are roll centers? Part 1: th-cam.com/video/gwtJNS5NlTw/w-d-xo.html Part 2: th-cam.com/video/RY7GLr49rc0/w-d-xo.html Chapters: Introduction 0:00 Finding the Roll Center 0:32 Effect of Lowering 1:47 The Impact of Lowering 2:35 Roll Axis Skew 3:08 Balance of Suspension Cha...
Spring Stiffness
มุมมอง 3K5 หลายเดือนก่อน
How do car manufacturers decide how stiff to make the springs in their cars? This video will explain the process and the math behind the choices OEM's have to make when deciding what springs to use. Chapters: Introduction 0:00 Ride Frequency 0:56 Measuring Ride Frequency 2:15 New Car Designs 3:06 Spring Motion Ratio 3:58 Using the Spring Motion Ratio 5:11 The Effect of Bushings 7:17 Calculating...
What Makes The BMW E39 Integral Link Suspension So Good?
มุมมอง 7K7 หลายเดือนก่อน
BMW introduced the integral link suspension concept in the 1996 E39 5 Series. Since then it has been used in many different cars. What makes this design the best choice for these cars and how does it work? This video digs into the details of the integral link design and what makes it so good. Chapters: Introduction 0:00 Integral Link Computer Model 1:48 The Parts 2:17 Degrees of Freedom 2:55 Re...
Lateral Spacing of Shock - Why it Matters
มุมมอง 94010 หลายเดือนก่อน
In the last video we talked about staggered shocks. This time we're going to talk about the lateral spacing of shocks on live axles and why it matters. Chapters: Intro 0:00 Spacing Examples 0:27 Computer Model 1:08 Vertical Motion 1:37 Roll Motion 2:42 Shock Motion Ratio 4:02 An Extreme Example 5:42 The Package Problem 6:42 Independent Suspensions 7:25 Staggered Shocks: th-cam.com/video/aJEGLYn...
What are Staggered Shocks and Why Are They Used?
มุมมอง 1.6Kปีที่แล้ว
Have you ever wondered why some pickup truck shocks are not symmetrical left and right? Why one of them is sometimes mounted in front of the axle while the other is mounted behind the axle? Well, here is the answer. Chapters: Introduction 0:00 Staggered Shocks 0:40 Axle Wind-up 0:50 Effects of Losing Traction 1:29 Adding Dampers 2:11 Effect of Staggering the Dampers 3:13 Other Live Axle Suspens...
Watts Link vs Panhard Rod: Which is Better?
มุมมอง 16Kปีที่แล้ว
In this video we look at the difference between a Watts Link and a Panhard Rod for live axle rear suspensions. Which is better and why would you choose one over the other? Chapters: Introduction 0:00 Suspension Basic Function 0:59 The Basic 4 Link Live Axle 2:04 Stopping the Side to Side Motion 3:00 The Panhard Rod 3:35 The Problems with Panhard Rods 4:52 The Watts Link 6:45 The Problem with Wa...
Wheel Offset
มุมมอง 1.9Kปีที่แล้ว
There seems to be a lot of confusion between wheel offset and backspacing. This video will explain the differences and why and when you need to care about both. Chapters: Introduction 0:00 What is Offset? 0:52 How to determine the Offset of a wheel 1:04 What is Backspacing? 1:53 How to measure Backspacing 2:07 Why we care 2:27 8" wheel example 2:49 10" wheel Example 3:03 Same backspacing exampl...
The Complete Guide to Anti-Squat
มุมมอง 26Kปีที่แล้ว
One of the most misunderstood aspects of suspension design are the anti- properties: anti-dive, anti-lift and particularly, anti-squat. This guide will explain what anti-squat is and how to correctly figure out how much you have in a suspension. Chapters: Introduction 0:00 Acceleration Force 1:22 Car Example 1:37 Weight Transfer 2:22 Anti-Squat - Suspension in a Slot 3:22 The Perfect Slot Angle...
Wheel Spacers: Good Idea or Bad Juju?
มุมมอง 3.3Kปีที่แล้ว
Do you have wheel spacers on your car? Are you thinking of getting them? Watch this video before you do to fully understand what they do to your suspension and handling. Chapters: Introduction 0:00 Kingpin Offset 0:41 Scrub Radius 1:11 Suspension Forces 1:57 Acceleration 2:43 Impacts 4:20 Braking 4:34 Bearing Load Line 5:40 Adding a Spacer 6:14 Conclusions 7:51 Huibert Mees Suspensions Explained
Sprung vs.Unsprung Mass
มุมมอง 2.3Kปีที่แล้ว
Let's talk about sprung vs unsprung mass in cars. You may have heard these terms before and wondered what they were talking about. Well, you're about to get the answer. This video will tell you what those terms mean and why car engineers care about them. Chapters: Introduction 0:00 Definitions 0:27 Demonstration 0:59 Partially Sprung Mass 1:17 Dampers 2:45 Motion Ratio 3:07 An Example 5:12 Why ...
Brake System Sizing And Design
มุมมอง 8Kปีที่แล้ว
The fundamentals of sizing the brakes in a car. Have you ever wondered what goes into determining the size of the brake components in your car? This video will tell you the answer. Chapters: Introduction 0:00 System Components 1:48 Parameters Required 2:16 What Happens When Braking 4:55 Graphing The Results 8:51 Comparing to The Ideal Brake Curve 9:22 Z-Critical Point 10:17 Modifying Parameters...
Why The Front Wheels Must Always Lockup First
มุมมอง 1.6Kปีที่แล้ว
The front wheels of any car will always lockup first under hard braking. Why is that? Is it true or is it just old folklore. This video will give you the answer. Chapters: Introduction 0:00 Model Introduction 0:25 No Wheels Locked 0:52 Locking The Front Wheels 1:15 Locking The Rear Wheels 2:06 Conclusions 3:07 Huibert Mees Suspensions Explained
The Ideal Brake Curve
มุมมอง 4.7Kปีที่แล้ว
The Ideal Brake Curve
The Complete Guide To Suspension Roll Centers - Part 2
มุมมอง 8Kปีที่แล้ว
The Complete Guide To Suspension Roll Centers - Part 2
The Complete Guide To Suspension Roll Centers - Part 1
มุมมอง 13Kปีที่แล้ว
The Complete Guide To Suspension Roll Centers - Part 1
Degrees of Freedom
มุมมอง 2.5Kปีที่แล้ว
Degrees of Freedom

ความคิดเห็น

  • @k.bellingham8335
    @k.bellingham8335 2 วันที่ผ่านมา

    I cant say this eloquently so I'll say it from the heart, love your damn lessons, I'd stay late after every school day to pick your brain. More please.

  • @AlecHulvey
    @AlecHulvey 4 วันที่ผ่านมา

    Came across your videos recently and have been really enjoying taking the rust off my knowledge! Recently I have been thinking about dampers and while I understand their basic function I don't know exactly what makes a "good" damper and what traits more expensive ones have that cheaper ones don't. I would love to see a video on this subject eventually, but I don't doubt whatever you make next will be extremely informative either way. Thank you for your hard work!

  • @moneyshifters
    @moneyshifters 5 วันที่ผ่านมา

    E46 or e39 touring diagram is a cool detail. Lovely car. Great video, as goes without saying.

  • @filepz629
    @filepz629 6 วันที่ผ่านมา

    🫂

  • @carpdime1592
    @carpdime1592 6 วันที่ผ่านมา

    I can't express how much I appreciate this channel. It's pure gold, and I eat up every minute of these videos.

  • @improvedae86
    @improvedae86 6 วันที่ผ่านมา

    I just feel sorry for the poor French man driving the BMW , he isn't used to the motion because he normally drives a interlinked hydraulic suspension vehicle ...

  • @user-zh6hm8xv9d
    @user-zh6hm8xv9d 6 วันที่ผ่านมา

    thank you Mr Mees

  • @user-yx5wd5yy6h
    @user-yx5wd5yy6h 6 วันที่ผ่านมา

    Your videos are pure gold! Thank you very much for sharing your knowledge with us.

  • @filepz629
    @filepz629 6 วันที่ผ่านมา

    ❤️‍🔥

  • @user-om9gy3mg7x
    @user-om9gy3mg7x 6 วันที่ผ่านมา

    Anti-dive only affects the driving feel but doesn't change the maximum braking performance? Does it affect the car's characteristic? Does it make the car more understeery or oversteery when the car is under braking?

  • @Drunken_Hamster
    @Drunken_Hamster 7 วันที่ผ่านมา

    I think for the layman, backspacing is simpler and easier to use when buying wheels for a particular appearance. That aside, assuming you can place the suspension however you want, change or adapt the hub bearings to suit, and that the fenders weren't a factor, how does changing offset affect the dynamic grip of the car? I've heard that a high positive offset (IE flat face wheel) gives a lot of side bite, which is good for controlling oversteer on the rear or reducing understeer, I suppose, if it were done on the front. Is this true, or is wheel offset mostly detached from handling characteristics as long as it isn't extreme IE dually style positive offset or 2-3 inch backspaced wheels.

  • @artempavliuchenko1815
    @artempavliuchenko1815 7 วันที่ผ่านมา

    Thank a lot, Huibert! Brilliant channel with high-tech content explained with a simple words. As Einstein said if you can't explain it simply, you don't understand it well enough.

  • @cam3002
    @cam3002 7 วันที่ผ่านมา

    Where did you get the front ride frequency of 1.2 Hz and rear ride frequency of 1.3 Hz?

    • @BLoudermilk
      @BLoudermilk 7 วันที่ผ่านมา

      Spring rates and frequencies are covered in a prior video

    • @martinburnett3852
      @martinburnett3852 6 วันที่ผ่านมา

      He literally said it was an assumption dude. He made it up.

  • @ehcantremember3360
    @ehcantremember3360 7 วันที่ผ่านมา

    This channel makes me feel like a genius and a moron at the same time

  • @k.bellingham8335
    @k.bellingham8335 11 วันที่ผ่านมา

    I want to reiterate what Moneyshifters said, absolutely fantastic, massively appreciate your informative video/s, thank you. Any chance you might speak about anti-dive? Learning anything suspension related feels as good as money in my pocket. I had thought sub-frames were designed for production efficiency only, thanks for teaching, more please.

    • @suspensionsexplained
      @suspensionsexplained 8 วันที่ผ่านมา

      Thank you. Funny you should ask about anti-dive. I'm about 95% through a video on just that topic. Look for it in the coming days.

  • @Dr_Xyzt
    @Dr_Xyzt 13 วันที่ผ่านมา

    Okay, so we have offsets and how they interfere with the contact patch centerline. -- When I'm steering and the contact patch of mechanical trail moves along an arc, how does that affect steering feel?

  • @Dr_Xyzt
    @Dr_Xyzt 13 วันที่ผ่านมา

    I totally appreciate the engineering in the system and the concept that it's perpetuating our aging driver's education procedures. I'd just as soon use regular non-vacuum assisted Hydro-Mechanical brakes, and then have the regeneration on a split brake pedal. So, when you press the far left edge of the pedal, you're on regeneration, but if you exceed the threshold of the primary pedal travel, it simply actuates the hydraulic system as intended. Andrew Tate is right about driving.

    • @suspensionsexplained
      @suspensionsexplained 8 วันที่ผ่านมา

      The problem is that the point at which that threshold happens needs to vary according to the amount of regen the battery can handle. The transition from regen to hydraulic needs to be seamless and this presents a very difficult mechanical problem. De-coupled systems are designed to solve that problem.

    • @Dr_Xyzt
      @Dr_Xyzt 7 วันที่ผ่านมา

      ​@@suspensionsexplained What amazes me about EV's is having the motor hard-splined to the rest of the geartrain. Irregularities in the road go straight into the drive assembly, and we end up with monster rubber bushings.

  • @guillaumegenin21
    @guillaumegenin21 14 วันที่ผ่านมา

    Whaoa, This is a very good video answering a ton of questions I had when looking at Tesla's S and X suspensions. These cars are known for «eating» rear tires due to an heavy negative camber on the rear Integral link suspension. Some companies even sell adjustable camber arms to correct this and reduce camber from 2.5° to 0.5° expanding a lot tire life. Could you elaborate on the impact of this rear camber change on handling and comfort ?

    • @suspensionsexplained
      @suspensionsexplained 8 วันที่ผ่านมา

      It probably won't make any difference for comfort but handling will likely get worse. The extra camber helps the rear suspension resist lateral load so with less camber in the rear I would expect the car to have less understeer. The steering feel will also be affected with the car becoming more twitchy, especially at highway speeds.

  • @antikristuseke
    @antikristuseke 16 วันที่ผ่านมา

    This is a very neat description. Thank you.

  • @mry82
    @mry82 19 วันที่ผ่านมา

    Very interesting!

  • @trottermalone379
    @trottermalone379 20 วันที่ผ่านมา

    Link check.

  • @MrRanggong
    @MrRanggong 20 วันที่ผ่านมา

    Great job. I understood. I get the impression you know a lot more but its nice how you keep it simple so the rest of us can understand it. You seem sincere in trying to accomplish that.

  • @jbcowherder6210
    @jbcowherder6210 21 วันที่ผ่านมา

    the brake by wire system is fine, until it breaks........ and those that are repaired by unqualified mechanics......i worked at a car dealership in an area that is near a collection of 30+ wrecking yards, and have seen first hand the janky crap people cobble together and resell to unsuspecting drivers.... also: then there's the DIY crowd, that won't pay a trained and qualified repair technician to replace whatever malfunctions on their vehicle, they'll find a TH-cam video on how to fix it from some other unqualified hack.... as a retired 25+ year Master Automotive Technician I've come away with a few things: 1) there are repairs on some vehicles that some folks just shouldn't do. 2)there is always some unforeseen problem in a system after it was designed- which is why we have safety recalls..... what prompts those recalls? usually it's because someone died.... let that sink in......

    • @suspensionsexplained
      @suspensionsexplained 20 วันที่ผ่านมา

      Unfortunately, this is the way every other system on cars has been going for many years now. There's very little you can do yourself any more. I grew up on points and distributors and I like the simplicity of the old days. But I also like a car that starts no matter the weather and won't kill me if something goes wrong.

  • @interstellarsurfer
    @interstellarsurfer 24 วันที่ผ่านมา

    I've seen control modules on modern cars spontaneously reboot while going down the road. Brake-by-wire is a *terrible* idea. When drive by wire fails-safe, you coast to a stop and keep your steering authority. When brake by wire fails-safe, you're going to abruptly stop in the middle of the highway, which is nearly as unsafe as having no brakes at all.

    • @AnnDee4444
      @AnnDee4444 23 วันที่ผ่านมา

      How? 9:47 explains the fail-safe valves.

    • @suspensionsexplained
      @suspensionsexplained 20 วันที่ผ่านมา

      The failsafe is you have a push-through system, just like the days of old. The system won't just abruptly stop by itself.

  • @platin2148
    @platin2148 24 วันที่ผ่านมา

    Well it's fine todo that. What I don't see is why we need Steering By Wire as that is adding more parts that break than less, the only real benefit I can see there is less positioning restrictions but currently that isn't done at all.

    • @AnnDee4444
      @AnnDee4444 23 วันที่ผ่านมา

      Packaging & safety are potential benefits of steer by wire. Steering shafts have evolved over time to include crumple sections & slip joints, but I could see how no shaft would be safest for the driver.

    • @suspensionsexplained
      @suspensionsexplained 20 วันที่ผ่านมา

      The biggest benefit with steer by wire is that you can vary the steering ratio: make it fast around town and parking lots so you don't have to turn the wheel so much but slow on the highway so it's not twitchy. Still, it seems to me to be an answer to a question no one is asking.

  • @leandrolefa
    @leandrolefa 26 วันที่ผ่านมา

    Your videos are the best. Every time someone asks me how something works in a car, I check if you have a video on it. I know I'd never explain better. Thank you so much for making these!

  • @narwhalyt7231
    @narwhalyt7231 26 วันที่ผ่านมา

    Best automotive channel on TH-cam, dont stop making these.

    • @BrownMInc
      @BrownMInc 19 วันที่ผ่านมา

      Legitimately

  • @bayuamanda1901
    @bayuamanda1901 26 วันที่ผ่านมา

    Thank you for clear explanation sir. Not fluent in english, but i still able to understood what are you saying.

  • @CT_Taylor
    @CT_Taylor 26 วันที่ผ่านมา

    I’ll give it a watch before I disagree lol in case you can convince me

    • @CT_Taylor
      @CT_Taylor 26 วันที่ผ่านมา

      I guess I am convinced lol 😊

  • @Jack-ox9iz
    @Jack-ox9iz 26 วันที่ผ่านมา

    Great video! Thank you!

  • @videomaniac108
    @videomaniac108 27 วันที่ผ่านมา

    I'm a retired physicist and college physics instructor and would like to compliment you on your most interesting and informative videos, clear and succinct.

  • @jeankubica903
    @jeankubica903 28 วันที่ผ่านมา

    Great videos. Got yourself a subscriber. Would like to see a video comparing independent vs rigid axle suspension.

  • @wordsshackles441
    @wordsshackles441 29 วันที่ผ่านมา

    Amazing

  • @wordsshackles441
    @wordsshackles441 29 วันที่ผ่านมา

    Fantastic, thank you.

  • @yogeshramachandra
    @yogeshramachandra หลายเดือนก่อน

    Wonderfully explained 👏. Thank you

  • @marcosreta3655
    @marcosreta3655 หลายเดือนก่อน

    What would be, for you, the best system to use in drag racing on tracks WITHOUT GLUE, NO PREP, that works above 100 AS or below?

  • @joshuaolson5265
    @joshuaolson5265 หลายเดือนก่อน

    Do you happen to have any online software recommendations for designing a suspension? I see that you use 3D models and maybe a 2D PowerPoint slide for your explanation. I'm currently reading a 2008 college dynamics PDF to help get a better understanding of the dynamics of suspension. I'm planning on putting an inverted slider crank or McPherson strut in the front suspension of a 1953 Chevy truck. The Donor vehicle is a crashed Bmw. I noticed this video link below had several possible sites to help look at the dynamic kinematics points. th-cam.com/video/Qm6ZfHAG7Ss/w-d-xo.htmlsi=-ceJwTSaKLTHwEfu

  • @IgnitionP
    @IgnitionP หลายเดือนก่อน

    Really useful, the explaination is brilliant. Ps. I love the GT40 in the back

  • @dylanv3813
    @dylanv3813 หลายเดือนก่อน

    Huibert you are my goat

  • @drive-channel1834
    @drive-channel1834 หลายเดือนก่อน

    What about triangulated 4-link rear suspension? Lower links are parallel to the frame, Upper links are "triangulated" i.e the axle mounting points are close together approximately at the center of the rear axle (above diff housing). This system doesn't need Panhard bar or Watts links.

  • @anandanil8158
    @anandanil8158 หลายเดือนก่อน

    Can you please explain why this happens

    • @anandanil8158
      @anandanil8158 หลายเดือนก่อน

      Ie does this not depend on weight distribution etc? if yes can u tell us how exactly

  • @frankleyva9080
    @frankleyva9080 หลายเดือนก่อน

    I understand that it dampens. But why do off road trucks position them being mirrored? And they go over way more bumps than a regular street drive. It makes more sense to me to mirror the rear shocks rather than stagger them. Please I need help understanding

  • @frankleyva9080
    @frankleyva9080 หลายเดือนก่อน

    I understand that it dampens. But why do off road trucks position them being mirrored? And they go over way more bumps than a regular street drive. It makes more sense to me to mirror the rear shocks rather than stagger them. Please I need help understanding

  • @qkurd9141
    @qkurd9141 หลายเดือนก่อน

    Thank you for free-sharing your priceless hard earned knowledge! I hope me and my co-generation car-guys, take the knowledge from you and guys like you, and pass it to the next generation of car enthusiasts! P. S. Not all those who look for free knowledge are created equal! Sometimes it's not about having or willing to pay, it's about not being able to do transactions internationally for being sanctioned/banned from international banking system!

  • @booln4595
    @booln4595 หลายเดือนก่อน

    Hi, could you please tell how you build a knuckle wireframe? I understand it is a 3d sketch, but I can't figure out what constraints you used. Thank you.

  • @BassicVIC
    @BassicVIC หลายเดือนก่อน

    I can’t believe it. A no-nonsense, unemotional and well informed video about wheel spacers? Thank you.

  • @ajferri8978
    @ajferri8978 หลายเดือนก่อน

    what about putting a stiffer rear sway bar in a car?

  • @dividingbyzerofpv6748
    @dividingbyzerofpv6748 หลายเดือนก่อน

    This is the S550 rear suspension. It is also the leading reason why the rear end seems so vague under performance driving thank to too many rubber bushings.

  • @dividingbyzerofpv6748
    @dividingbyzerofpv6748 หลายเดือนก่อน

    Next time put your mic some place else so we do not have to hear you swallowing

  • @harshtiwari4890
    @harshtiwari4890 หลายเดือนก่อน

    How are u able to create the ideal curve in the first hand, using the 4 parameters, pls tell