How Do Active Dampers Work? TracTive Active Suspension Explained

In this video we discuss the active damping and suspension on the RP968 time attack car, with Dejan Ninic from TT Suspension. Active damping is a significant advancement in car control, and allows you much better control over the damping rates for a given spring setup.
You can find Tractive Suspension here: tractivesuspen...
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[@KYLEENGINEERS]

Sorry for the slightly dodgy camera framing, it was day 2 WTAC and I forgot my tripod! Thanks heaps to Dejan for chatting about this technology, you can find Tractive at tractivesuspension.com/

[@dascenter6364]

KYLE.ENGINEERS No problem, thanks for the video!

[@fokjohnpainkiller]

Please include more B-roll shots in your video, I find myself scrolling down to read the comments when I already have a minute ago! Other than this, active suspension is a piece of technology that isn't talked about as much as it should so this video really was a treat!

[@jonarruda2719]

Love the videos, if you’re open to suggestions I would recommend getting a mic for your interviews. It seems like the setting has bad acoustics and its difficult to hear the interview. It would make a hell of a difference especially to headphone users. Best

[@RoyMay24]

when you were calling active damping I was getting triggered, thank god that guy corrected you. nice video

[@greapsoho]

Thats impressive as heck 100 odd kg vs 200 some kg for an ls. Thats a very impressive weight difference especially if in a single seater of less than 1000kg

[@daviddroescher]

you could use hydraulics to do the variable suspension active F1 style use a slightly longer shock and use the hydraulic ram to keep the tire/spliter the same ride height. as the aero load increases the ram would extend compressing the normal spring and adding just the right increase of spring rate. and could be used to lift the out side in curves. with bypass shocks you can tune a high speed (bottom 1/3) and tight corners (upper 2/3) sections.

[@MX304]

Any chance of a video explaining "Interter" dampers that Indycar teams and even some very high level late model dirt racers are using?

[@ghiisorptmmgjufcnbt]

donut media did a really good one explaining them. Best I have found so far.

[@arielxaber6637]

Can you do a video about dssv suspension ?

[@flowerpetals1396]

I am thinking of buying a mid wheel drive powerchair with active trac suspension. Is this suspension front, rear or all round?

[@mas921]

This blew my mind! Especially the in car cam comparison!

[@ubacow7109]

is this the same as how the KW DDC suspension works?

[@TENNESSEETRACKHAWK]

No definitely not. This has a stand alone computer that replaces the DCC. Its way more advanced than the KW DCC which uses ur factory DCC which only stiffens to 80%.

[@nickamarit]

How much more mass does an active system usually add over a normal damping system? Is the added mass (if any) part of sprung mass, unsprung mass, or a combination of both?

[@IR-xy3ij]

It's almost always worth it, as active suspension is specifically banned in F1. Any technology banned in F1 is game changing.

[@nickamarit]

@@IR-xy3ij Good point.

[@AntonEMaes]

What are the advantages here vs an MR damper? I guess the fluid is more predictable than an emulsion. 6ms is probably fast enough to do ground hook damping. It's been a long time since I read papers on that though

[@millerchassis6119]

What's ground hook

[@AntonEMaes]

I'm probably butchering this but it's basically an active damping strategy where you use sensors on the vehicle to simulate as if the vehicle is damped relative to a fixed point on the ground (i.e. hooked to the ground) The idea is that since tires are load sensitive (lose relative grip at higher loads) if you can smooth out the spikes from bumps you'll get better traction. This comes at the expense of the driver who takes a bit more beating. You hear about its cousin "skyhook" more often where people are trying to optimize ride like in offroad applications. I remember Maserati offered a skyhook suspension once but I don't recall if their implementation was any good. There was a lot of talk about this for military vehicles though since a lot of what limits your speed offroad is the beating the crew can handle.

[@millerchassis6119]

ok cool I've got it thanks for the reply guys sounds awesome, so is it reactive to what the sensors feed it or do you have to program it from track data, In drag racing its used as a time based program to change at different points on the run.

[@tacticalcenter8658]

gtr Heritage has a bunch of posts about tractive if anyone wants to read more. www.gtrheritage.com/topic/6022-dsc-tractive-electronic-shocks-controller/ www.gtrheritage.com/topic/7143-dsc-sport-controller/

[@ColocasiaCorm]

6ms from full hard to full soft. Me when she says "did you bring a condom?"

[@skidtechracing8674]

Please develop for rally I will need some!!

[@roflchopter11]

Please get lav mics and/or a shotgun mic.

[@dangidelta]

I still don’t understand why an active suspension Technology should be used in a race car 🏎 where the input road frequencies are probably too low and known already. I mean this setup in an ATV would make much more sense wherein the input road frequencies vary like hell all over the transmissibility graph and it wouldn’t do without an active setup.

[@AntonEMaes]

Sachin Dangi I think the height dependency is the big motivation here. With a lot of aero and riding on the bump rubbers your spring rate is all over the place

[@AntonEMaes]

Sachin Dangi you could also probably do some interesting things with transient roll stiffness, but that's in the low speed part of the curve so it might not be worth it

[@SillieWous]

You should try to do a video on electronic suspension. I think its a far superior active suspension compared to this.

[@SillieWous]

@Lunatic Well yes, but actually no. More like this: watch?v=AvHO1w_Lhk0 Shameless plug of the university I went to.

[@TheSandiestHook]

talk about the new tesla roadster

[@mlcollingwood]

Interesting that it is not classified as active aero. Aero enhances grip, but so does traction control and or active suspension. So why is active aero banned in some events and not traction control etc...

[@marfrandema1884]

You can do that, williams did that in 92 and 93, on the straights the car raise the front to reduce drag and have a higher top speed even with the bhp lost by the active suspension system.

[@AntonEMaes]

Mark Collingwood if you had 2 way control you might be able to jack the car down slowly but ive never heard of that being done

[@samkwant4050]

RedBull actually developed a similar system that would lower the back of the car at high speed to reduce drag but the FIA classed it ad active aero and deemed it illegal

[@AntonEMaes]

Sam Kwant this is what I get for not keeping up my subscription to race car engineering

[@EvilED08]

I can't stand the audio in these at the track videos. I can't concentrate on what's said when the surroundings are louder than the interview. Sorry

[@zukacs]

lol:)))))))))))