1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

geometry set up after new suspension pls read ess

Discussion in 'A3/S3 Forum (8L Chassis)' started by fingermouse, Jun 17, 2008.

  1. fingermouse
    Offline

    fingermouse thats me

    Joined:
    Sep 6, 2004
    Messages:
    3,771
    Likes Received:
    13
    [Jun 17, 2008]
    well got the car set up today on a huntsman system (think thats what it was) only problem the rear left toe is slightly out


    front left -0 28 camber 7 10 caster 0 05 toe
    front right -1 08 camber 6 43 caster 0 05 toe

    front total toe 0 09
    stear ahead 0 00

    rear left -2 04 camber 0 32 toe
    rear right -2 02 camber -0 04toe

    rear total toe 0 28
    rear thrust angle 0 18


    does this look ok ??? drives ok but how much is 0 32 ??? in laymens terms a lot or not ???


    hope you read this ess and try to explain it to me in laymans terms.

    cheers in advance
    #1
  2. Ads

    Ads

    [Sep 22, 2014]

  3. j4jon
    Offline

    j4jon Member

    Joined:
    May 10, 2003
    Messages:
    701
    Likes Received:
    0
    [Jun 17, 2008]
    I'd say that the toe on the rear left is excessive from what I have read and gained from Ess and ChrisS3. It may also be wise to try and balance the front camber so that it is even on each side, this may mean you need to play around with the front subframe to get it so that it is even.
    Do you have the adjustable rear arms?
    #2
  4. Ess_Three
    Offline

    Ess_Three Active Member

    Joined:
    Feb 19, 2001
    Messages:
    5,383
    Likes Received:
    6
    [Jun 17, 2008]
    I too would want the camber equalling up..you can get +-0.5 degree on the bottom ball joint normally..I would aim to get it equal at around -1.0...or nearer -1.5 if you can.

    Have you changed the front ARB?
    It's possible the subframe is not totall central, the way the readings are out.

    And you have 9 minutes total toue out..roughly 5 minutes toe out per side...that's a lot.
    I'd not hav more than 1-2 minutes per side.
    4 minutes total would be aggressive.


    Rear camber is high...it'll wear the inner edges at that.
    I assume no adjustable rear tie bars?

    It's not overly bad..it'll drive Ok..but with adjustable tie bars you can come back to -0.5 to -1.0 per side, get better grip, less tyre wear and better predictability.

    Rear toe is adjustable on a slider type adjustment on the trailing arm iner mount.
    The dealer/specialist wil know how to do this...
    That's a lot of toe out..it'll kill the tyre.

    Ideally..you want 0.0 at the rear, neirther toe in or out.


    Hope this helps...
    I'd say it needs seting up again, to different settings.

    Just shout if you want any more info.
    #3
  5. fingermouse
    Offline

    fingermouse thats me

    Joined:
    Sep 6, 2004
    Messages:
    3,771
    Likes Received:
    13
    [Jun 17, 2008]
    I have fitted rear adjustable arm in the top position.
    Both ARB`s have been changed for 2 years now.

    Rear camber was -1 04 lhs and -0 50 rhs but shows red on the readout so they altered it to green -2 04 and -2 02 respectivly. does it look like they have set it to the wrong figures ??? it now shows green on the sheet.

    from watching them adjust the rear arms it looked like they were lenthening them which I assumed was tipping the top out therefore reducing inner edge wear . ill have to get under and measure the length of the arms compared to the originals.

    the left rear toe was adjusted as much as poss he said it wouldn`t go and further as it was up to the sill or out of movement on the holes.


    might see how it goes and if it wears the rear tyres out unevenly then fit new ones and to someone who knows modded audis. Had to explain how to adjust the front camber as there system said it was not adjustable ffs. They do a lot of lotus and ferrari work which is why they purchaced this machine.


    cheers for the pointers, at £75 a pop for tracking then I might see how this goes then, it drives ok just hope it doesn`t rip off the tyres too quickly. :(
    #4
  6. Ess_Three
    Offline

    Ess_Three Active Member

    Joined:
    Feb 19, 2001
    Messages:
    5,383
    Likes Received:
    6
    [Jun 18, 2008]
    That explains the front being not equal...looks like the subframe isn't on square.
    Ideally you want to make sure the camber is equal accross both sides, or the car will behave differently on left vs right hand turns.


    To me, it looks wrong.
    I don't remember -2.0 degrees being acceptable...but then again, perhaps it is for a standard car with quattro gmbh springs fitted?
    I wouldn't run that amount...
    Why didn't you ask them to set it up to proven settings rather than standard?

    Personally, I'd ignore the standard stuff completely..if a compromise...you can do better.

    That would be correct, if they were.
    But your suspension angles suggest otherwise...they look to have shortened them, adding more negative - and tyre wear.


    Someone else on here had this problem...I think you need to switch the adjustable arms to the lower position - certainly on the side giving you problems...that should let you get the rear toe in spec.


    That's a hell of a lot of toe to live with...28 minutes...nearly 1/2 a degree! Should be parallel.

    It's up to you...but after spending all the money on the suspension, it seems a shame not to get the best out of it by setting it up properly.
    I'm sure you'll find it nicer to drive, and more predictable too, if you set it up differently to what you have currently.


    The rear camber will take time to wear the iners...negative camber is kinder on tyres that lots of toe out, that's for sure.
    The front toe will wear the front tyres more quickly...
    That rear pointing out will wear quickly - especially combined with lots on negative camber - as you have.
    #5
  7. SnoopS3
    Offline

    SnoopS3 You cant beat German

    Joined:
    Jun 6, 2008
    Messages:
    69
    Likes Received:
    0
    [Jun 18, 2008]
    Ess_three - when my car was in the garage i noticed one of the bolts for the subframe was one turn from coming off completely!! Im guessing this would have now screwed up the settings. Am i correct?
    #6
  8. Ian W
    Offline

    Ian W Active Member

    Joined:
    Oct 27, 2007
    Messages:
    1,054
    Likes Received:
    7
    [Jun 18, 2008]
    I'm having mine setup in a few weeks, planning on using the settings in Ess's sticky...
    #7
  9. fingermouse
    Offline

    fingermouse thats me

    Joined:
    Sep 6, 2004
    Messages:
    3,771
    Likes Received:
    13
    [Jun 18, 2008]
    thanks for the advice Ess I did read your set up but I know you had set yours up quite agressive and I was just after a std set up which it looks like I havn`t got :(.

    just re read the sticky and you had you had 5 mins toe out per side at the front as oppose to 4 mins toe in which is std??

    on the rear you had toe out and -1 degree per side.

    I might move the arms to the bottom position and see if this helps, I`ll only be doing 200 miles in it over the next few weeks so shouldn`t harm things too much then I might pop to JBS which it looks like I should have done in the first place :(

    Its strange how only one side at the rear was effected so badly with the toe I remember someone else posting this but I fitted ESC arms that were suppose to be on the top oh well spanners out time again.

    The diagram they showed me suggested the rear left was pointing in the diagram looked aweful.

    cheers again
    #8
  10. fingermouse
    Offline

    fingermouse thats me

    Joined:
    Sep 6, 2004
    Messages:
    3,771
    Likes Received:
    13
    [Jun 18, 2008]
    [​IMG]

    the dreaded print out
    #9
  11. jomnhta
    Offline

    jomnhta Member

    Joined:
    Jul 12, 2007
    Messages:
    60
    Likes Received:
    0
    [Jun 18, 2008]


    Ess3, I discussed this issue with you before. Fingermouse, change the tie-bar to the lower position will definitely bring your camber and toe back to resonable figures.
    #10
  12. fingermouse
    Offline

    fingermouse thats me

    Joined:
    Sep 6, 2004
    Messages:
    3,771
    Likes Received:
    13
    [Jun 18, 2008]
    ok cheers looks like getting it setup again then :( more cost lol
    #11

Share This Page