×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

McLaren MP4-12C with Kinetic/Tenneco/Ohlins CES dampers?

McLaren MP4-12C with Kinetic/Tenneco/Ohlins CES dampers?

McLaren MP4-12C with Kinetic/Tenneco/Ohlins CES dampers?

(OP)
I've recently seen some photos of the unclothed MP4-12C chassis sporting what seems to be a version of the Tenneco/Kinetic "CES interconnected passive reactive system".
They (McLaren) are making a big deal about the absence of ARBs and continuously controlled damping. Sounds like something right out of the Tenneco borchure.
Particularly revealing is a shot of the top of the damper with the paired hydraulic and electrical connections. (attached)
Anyone have anything on this?

RE: McLaren MP4-12C with Kinetic/Tenneco/Ohlins CES dampers?

Well it does what it says on the box. I think it is spelled Kinetik but might well be wrong. At least one FSAE-A team has used it.

Not entirely sure it is legal under the current rules for F1, any electronics in the dampers seem likely to fall foul of

"10.1.2 The suspension system must be so arranged that its response results only from changes in load applied to the wheels."

 

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies  http://eng-tips.com/market.cfm?

RE: McLaren MP4-12C with Kinetic/Tenneco/Ohlins CES dampers?

MP4-12C doesn't refer to F1.

Did FSAE team use these dampers??

RE: McLaren MP4-12C with Kinetic/Tenneco/Ohlins CES dampers?

(OP)
If I have this right, the FSAE shock is a collaboration between Ohlins and Cane Creek- maker of high-end bicycle shocks.
As small shocks go, it's fairly deluxe: twin tubes, external nitrogen reservoir, separate high and low speed adjustments for both bounce and rebound (four in all), but it's completely passive. No electrons exerting their influence on wheel or suspension dynamics.

RE: McLaren MP4-12C with Kinetic/Tenneco/Ohlins CES dampers?

See http://viewer.zmags.com/publication/56a5d8e9#/56a5d8e9/1 - this will answer the first question.  Greg, UWA has used Kinetic ( yes with the "C" ) technology very sucessfully for several years, as did the Mitsubishi Dakar and Citroen WRC yeams until it was banned.    

RE: McLaren MP4-12C with Kinetic/Tenneco/Ohlins CES dampers?

I was FSAE-A chassis design judge on the UWA car one year. I've also seen a demo of one of the Kinetic LandRovers, but can't remember which gen system it used, I think it was just active roll control. Like I say it does what it says on the box, once you've seen one properly sorted active suspension system then you are just down to engineering tradeoffs with any other active suspension.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies  http://eng-tips.com/market.cfm?

RE: McLaren MP4-12C with Kinetic/Tenneco/Ohlins CES dampers?

I believe that all of the Kinetic systems were not "just active roll control" but an enhanced chassis setup that improved ride/handling characteristics.  

RE: McLaren MP4-12C with Kinetic/Tenneco/Ohlins CES dampers?

(OP)
Interesting that Citroen used it on the WRC. The formidable Andre LeFebvre must have smiled, looking down from that Great Drawing Board in the Sky.

RE: McLaren MP4-12C with Kinetic/Tenneco/Ohlins CES dampers?

Smiled indeed, given that the inventor of the Kinetic technology, Chris Heyring, was inspired to create the technology by his appreciation of, and affection for, Citroen cars....  

RE: McLaren MP4-12C with Kinetic/Tenneco/Ohlins CES dampers?

Hi, newbie here so please be gentle............lol.
The suspension setup looks interesting, would it in roll reduce weight transfer from the inner wheel compared to a conventional anti roll bar?
Also if a computer controls the system why on a car this upmarket does it use a Z bar to control downforce?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources