04-10-2014, 01:16 PM | #67 |
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I get some of the inputs about active damping is constantly adjusting the damping rate, but I am surprised that the system can respond so quickly...Bumps on the road require much faster changes than yaw etc. Or does it only compensate for yaw? What's the required response time for something like this? In the us? ms range?
I guess i am just skeptical that we're getting this much for a $1000 option. I (and I imagine 98% of the people) will just leave it on one setting anyway. Last edited by KevN27; 04-10-2014 at 05:17 PM.. |
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04-10-2014, 04:27 PM | #68 |
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I just dropped this option out of my configuration yesterday since I figured that I'd be using sport mode most of the time anyways.
So I just stick to the "basics" and will be very happy once I need to replace these about the "low" costs
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04-10-2014, 05:36 PM | #69 |
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04-10-2014, 08:09 PM | #70 | |
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The baseline damping is tuned properly to handle small bumps without needing additional adaptive control, then the control is increased very quickly when a larger input or body motion (roll, pitch, heave) is encountered. The typical response time is 5-15ms. The link below explains how this works in a bit more detail. However, note that I wrote it in context of the F30 system, which is not the same as the F8X or E9XM system. The M adaptive system has faster response, and is more appropriate for a performance application. These systems DO work when well tuned. You can feel it, and on cars I've worked on, objective measurement data shows significant reduction in body motion and acceleration while maintaining ride quality and road input transmissibility. IMO, The E9XM and F10M adaptive suspensions are quite good, and based on how quickly this technology is advancing, I expect the F8X adaptive suspension to be very impressive. http://www.f30post.com/forums/showth...hlight=racer20 Last edited by Racer20; 04-10-2014 at 08:21 PM.. |
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04-10-2014, 08:33 PM | #71 | |
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Anything that can be sensed can be used as an input if someone can find a use for it and write the software. I have a car at work where, with a few extra lines of code, I could use GPS to have the car behave in a specific way for each corner on a race track, or have it do something specific when I hit the annoying crack at the end of my driveway. It's also possible to stiffen the damper slightly over months or years or based on mileage to account for normal wear over the life of the car. Unfortunately, these systems are a bit out of the realm of the typical amateur racer and most aftermarket companies, so there isn't much consumer level information out there other than marketing materials. |
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04-10-2014, 08:36 PM | #72 | |
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Durability requirements for most adaptive dampers are more stringent, so catastrophic failure is less of an issue than in the past. They are also typically less sensitive to damping loss over time, especially since it's possible to automatically account for this in the software. The 60k mile shock replacement isn't necessary with these dampers as it once was, say for an E46. |
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04-10-2014, 10:09 PM | #73 | |
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I will try to talk my dealer into adding it for half the price on my order... which should be possible since I got a lot of options. If he doesn't do it I won't take it... knowing that I'll be happy with the M suspension as well. I suppose this is better then the M suspension on my 1 series (hatchback, in Germany) so it should be pretty impressive
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04-10-2014, 11:58 PM | #74 |
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Adaptive suspension question
Hi guys
just a quick question, is the adaptive suspension option same as the edc option in the e92? where u can set it to comfort or sport? So if u don't include the adaptive suspension option, is the suspension set to comfort all the time? does the ride differ at all without the option?? |
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04-11-2014, 12:20 AM | #75 | |
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04-11-2014, 12:36 AM | #76 |
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From the specs listed by Jason:
- Optional EDC Adaptive M Suspension features 3 modes: Comfort, Sport, Sport+ We don't know where the passive suspension is positioned vs. the adaptive. The common guess based on earlier M models is between comfort and sport in terms of stiffness. The ride is usually smoother with the adaptive suspension due to it's continuous adaptation to the road surface. It does IMO tend to rob you of some communication and predictability and maybe steering feel as well in return. |
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04-11-2014, 02:38 PM | #77 |
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Adaptive gives you one setting firmer (Sport +) and one setting softer (Comfort). Passive suspension is right in the middle.
Adaptive M definitely does not rob of any road feel. |
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04-11-2014, 03:00 PM | #78 | |
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great information. |
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04-11-2014, 03:21 PM | #79 | |
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04-11-2014, 03:48 PM | #80 |
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My sales person told me the passive suspension is only slightly softer than sport + on the adaptive dampers and that adaptive dampers would only give more on the comfort side of the spectrum. But i think he must have been guessing based on E90 EDCs since the new adaptive suspension is newly developed and i very much doubt he has driven it yet
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04-11-2014, 08:52 PM | #81 | |
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Drove the M5 with the adaptive suspension today. Could not really feel it on the short course I was supposed to go, but it was a fairly new road with very little curves...
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04-11-2014, 08:54 PM | #82 | |
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04-11-2014, 09:14 PM | #84 | |
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04-12-2014, 07:21 AM | #85 |
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I am skeptical whether adaptive suspension actually takes input from various sensors and adjusts on the fly. In E90 M3 EDC was just a 3 setting button for 3 levels of shock stiffness. There was no real-time adjustment of any kind.
If F80 adaptive suspension actually changes its stiffness based on various real-time factors, I'll be more than pleasantly surprised.
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04-12-2014, 07:42 AM | #86 |
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I design and tune these systems for a living. They do adjust in real time based on sensors on the car. The button determines HOW they adjust.
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04-12-2014, 01:30 PM | #87 | |
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04-12-2014, 08:14 PM | #88 | |
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One the E9X, the EDC Comfort and Normal modes are dynamically adjusted while the Sport mode has a fixed damper setting. For those that have the ZCP competition pack, the Sport mode is also dynamically adjusted. |
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