Do You Need To Tune Your Bump Stops?
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- Опубликовано: 25 июл 2024
- Bump stops are largely ignored by many when it comes to suspension setups with most people just taking them at face value as a tool that helps prevent damage to suspension components when they become fully compressed.
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In this [FREE LESSON] which is just 1 of 37 modules taken from the Suspension Tuning and Optimisation course, Tim explains how many people and professional motorsport teams leverage their use of bump stops well beyond a safety device and use them as tools to help maintain mechanical grip and aero effectiveness and more.
Discussed are polymer bump stops and their viscoelastic advantages, and disadvantages, along with bump springs and metal matrix (aka knitted mesh) bump stops and one of the key points you have to watch for when using packers.
0:00 - Bump Stops, More Than Just Protection
0:20 - Road Car Bump Stops
1:17 - Motorsport Bump Stops
1:48 - Material & Size Options
2:14 - Bump Stop Tuning How & Why
2:41 - Viscoelastic Polymer Bump Stop Advantage
3:21 - Polymer Disadvantages
3:46 - Bump Springs
4:49 - Metal Matrix Bump Stop
5:19 - Why We 'Tune' Our Bump Stops
6:16 - Common Reason
6:55 - Packer Gaps
7:21 - Look Out For This Issue
7:32 - How To Monitor It
7:41 - Data Analysis Courses
7:53 - Lesson Summary
8:19 - Just 1 of 37 Modules, Learn More Below
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Enjoyed learning about bump stops?
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📷 Metal Matrix bump stop photo credit (with thanks): www.knitmeshtechnologies.com/
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🙋♂️ Take $25 USD off ANY HPA course with coupon code: RUclips25
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That's right, I hearted my own comment. Deal with it 😂 😝 - Taz.
Spent 3 days on Google, and this 9 minute video answered more of my questions. Very great and educational video. Thanks
Cheers John! Glad you found this and found it helpful. We always release a few modules directly from our course material and this one is from the Suspension Tuning and Optimisation course.
Also while he doesn't get into the technical side of things (due to it being one of the few areas in GT4 class racing you can try gain advantage) you are looking for you might enjoy our podcast episode with Andrew Wojteczko of AWA Racing: www.hpacademy.com/blog/015-pushing-rules-and-restrictions-for-performance-with-awa-racing-podcast/?
Thanks again - Taz.
I was just getting ready to buy new coilovers for my wife's road car, and she complained the last ones are too soft. Was getting confused about the choice of spring rates and the tunability of damping, so your suspension course hit my feed at exactly the right time. Will be signing up for the full course this week.
No worries Matt, hope you enjoy the deep dive into the world of suspension! We've worked really hard to put in a ton of animations too in order to ensure there is minimal head scratching to correlate what the tutor is saying with how the components work 😎 - Taz.
High Performance Academy can i nstall one and half of jounce bumper for front and rear shock absorb ??? Or there is problem when do this idea 💡? I just want to save my shock from damage and increase of height of my car level …. Ur comment
Interesting to learn how bump stops work in road cars, I'm used to 4*4's where limiting factor on up travel tends to be the tire hitting the bodywork
Feal makes a pretty cool adjustable bump stop as well 👍
They look the goods, cheers for mentioning - Taz.
Well explained
So how does the bump stop activate at 150mph to stop the ride height bottoming out on a ground effect car, but still have enough travel for a bumpy & rough track?
How long Do Polymer bumpstops last when they are used as an additional spring in some Situation on track?
so with the aero cars, say a gt3, would you set up the bump stops differently for mid engine than engine up front?
I had my bump stops cut 25mm from the bottom and used the upper portion after installing tein lowering springs. I didn't like the ride quality and returned back to stock, is it ok that my bump stops were not replaced back to original and currently using shorter length than before?
Thanks ti god for your efforts
pretty weird when I posted this that is said there were 8 comments but only 3 were visible to me... YT shadow banning much? anyhoo I have seen cars scrape their carbon diffusers on the ground from bottoming out at 180mph+ from all the downforce they definitely would have benefited from this!
It is frustrating. So I can see comments in the main feed, but then if I go directly to the video, sometimes I see different ones that don't show on the main feed, and some of the main feed ones are missing.
Also I don't get notified of replies to comments, so I have to find them manually.
Facebook is similar behind the scenes, it's really all just a massive mess because they keep changing things for the sake of keeping their engineers employed. Like a big update is moving a menu from one area to another, without actually adding any functionality.
Then there are the bots who post as soon as you make a video live which you have to manually hide from channel or remove. Probably what's bumping up the numbers on this one.
And that, is my Thursday morning rant. You're welcome, and I hope at least the video played perfectly for you 😅 - Taz.
great job
Great video on a highly misunderstood topic.
Thanks!
Always use bump stops that are correct for how you use your particular car.
If it rides fine normally but scrapes and grinds with multiple fat people in the back, use stiff bump stops to stop your tires chewing out on the fenders.
A bump stop won't prevent those things from happening, it will only make them less likely. In contrast, adjusting the amount of compression/droop travel on the coilover while maintaining the same static ride height will prevent those scrapes and grind from happening altogether.
Would these be just as good to use on a non coilover??
In my opinion yes, as long as it is used between the original points of contact for the suspension. Of course installation will differ case by case.
Some cars with a trailing arm suspension, will have a bump stop in between the frame and the trailing arm itself. As long as you have mounted it properly and with the travel arch and direction in mind, it should be fine.
@@Nikoxion I guess that's the difference with coilovers the spring sits more higher then with normal dampers.
@@ifell3 Sorry, can you try to explain that a bit differently?
@@Nikoxion my mistake I was thinking the coils spring sat higher.
The graph starting at 04:15 triggered me: The yellow dots represent nothing usefull, because they just run through the curve in a give time.
They should represent the Displacement vs Force, or Force Vs Displacement for better understanding, meaning one should be fixed so we can see the represented difference between the two "device", how they behave in the given situation.
"valve please fix"
It is actually useful, It's showing the point of the force over a cycle. You can see that it's on the top blue line when being compressed and on the bottom expanding. The force is different between the compression and expansion cycle therefore energy has been absorbed by the bump material. This is called hysterisis.
The graph is already force vs displacement and as that is the characteristic parameters of a spring having the two spring profiles on the same graph is a direct comparison of how they will behave relative to one another.
This was actually a very good explanation and visual of the difference between a steel and polymer spring.
@@jakbain1337 Ok. i have read it like a misrepresented "if we apply this froce, we get this displacement", and not as an "at this compression we get this 'opposite-force', and this displacement change". Missed a dimension.
It's great to see more gay men in automotive media. (:
Across the board Tim is the office dreamboat for sure - Taz.