Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Search the maintenance guides for answers to 99.999% of Omega questions

Pages: 1 2 [3]  All   Go Down

Author Topic: Understeer  (Read 1300 times)

0 Members and 1 Guest are viewing this topic.

TheBoy

  • Administrator
  • *********
  • Offline Offline
  • Gender: Male
  • Brackley, Northants
  • Posts: 97508
  • Millennium Man
    • The missus mad
    • View Profile
Re: Understeer
« Reply #30 on: 11 July 2018, 18:20:17 »

I never found that with it ??? Certainly never felt like it was about to let go. Sure the estates do wallow a bit when pressing on which might explain your impression :-\
Up til that time, I regularly drove a lot of Omegas, many estates as well, though not so many now.  And that Terbs reprobate probably won't get in the car with me ever again, despite it being a reasonably gentle ride ;D

I think I commented at the time, the suspension felt solid, but that car was unable to grip the road, ruining the effect.
Logged
I don't tolerate bickering, and I'm always grumpy.
And Lizzie Zoom says I'm a heartless bastid...and she's absolutely correct!

Muroman

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Finland
  • Posts: 263
  • Cars for life
    • Opel Omega MV6 -99
    • View Profile
Re: Understeer
« Reply #31 on: 11 July 2018, 19:49:37 »

I mean 2.2 degree negative camber and it is now measured very precisely. I got to rethink if they really wear so fast  :-X  ::)

That 2mm toe in is must have at finnish roads with 235 wide tyres so can't be without it
Logged
Driving dark blue - 1999 - MV6 - Automatic
Earlier drive was silver - 1995 - MV6 - Manual

Raeturbo

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • South Wales
  • Posts: 331
    • Mv6 3.2 est 2.2 sl Evo2
    • View Profile
Re: Understeer
« Reply #32 on: 11 July 2018, 21:22:52 »

No road needs that much toe in surely????
Logged

Raeturbo

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • South Wales
  • Posts: 331
    • Mv6 3.2 est 2.2 sl Evo2
    • View Profile
Re: Understeer
« Reply #33 on: 11 July 2018, 21:24:57 »

Camber would be choice adjustment for roads , hence the name.
Logged

Doctor Gollum

  • Omega Queen
  • ********
  • Online Online
  • Gender: Male
  • In a colds and darks puddleses
  • Posts: 10928
  • If you can't eat them, join them...
    • Feetses.
    • View Profile
Re: Understeer
« Reply #34 on: 11 July 2018, 23:54:12 »

1°10 is perfect Omega camber.

Zero toe is required because poly vertical bushes significantly alter the way the wishbone behaves during turns.
Logged
Onanists always think outside the box.

Raeturbo

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • South Wales
  • Posts: 331
    • Mv6 3.2 est 2.2 sl Evo2
    • View Profile
Re: Understeer
« Reply #35 on: 12 July 2018, 12:31:46 »

Agreed and even that’s considered ‘sporty’ by some for a comfy type car.
Logged

Muroman

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Finland
  • Posts: 263
  • Cars for life
    • Opel Omega MV6 -99
    • View Profile
Re: Understeer
« Reply #36 on: 12 October 2018, 06:47:25 »

Just to update on car, I changed toe in 0.2mm, camber still 2.2 degree and lifted the rear a bit.
This made the car somehow unstable on corner exit but the understeer stayed pretty much away. (Maybe the higher rear)

Then lowered the car back on where it was and changed the rear tyres to thinner 205. This made the car oversteer very much but as winter is coming it's okay :)

Maybe could change the camber to 1.1 degree for winter roads. I think the 0.2mm toe in is all around good.

I lower and lift the rear by adjusting the small joint that measures the rear height. I made it adjustable with threaded rod.
Logged
Driving dark blue - 1999 - MV6 - Automatic
Earlier drive was silver - 1995 - MV6 - Manual

Doctor Gollum

  • Omega Queen
  • ********
  • Online Online
  • Gender: Male
  • In a colds and darks puddleses
  • Posts: 10928
  • If you can't eat them, join them...
    • Feetses.
    • View Profile
Re: Understeer
« Reply #37 on: 12 October 2018, 08:10:16 »

Do you have the Polish poly vertical bushes in the front wishbones?

If so, try zero toe at the front... Advice given by Wheels In Motion when I was experimenting with mine ;)

Logged
Onanists always think outside the box.

Muroman

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Finland
  • Posts: 263
  • Cars for life
    • Opel Omega MV6 -99
    • View Profile
Re: Understeer
« Reply #38 on: 12 October 2018, 13:44:57 »

Does omega change toe when braking or accelerating? Because my race car does go toe out when braking hard and by that I mean front going down.

I have those vertical polys.
Logged
Driving dark blue - 1999 - MV6 - Automatic
Earlier drive was silver - 1995 - MV6 - Manual

Doctor Gollum

  • Omega Queen
  • ********
  • Online Online
  • Gender: Male
  • In a colds and darks puddleses
  • Posts: 10928
  • If you can't eat them, join them...
    • Feetses.
    • View Profile
Re: Understeer
« Reply #39 on: 12 October 2018, 16:30:31 »

1. Only if the geometry is screwed up or the front bushes are shot... Powerflex bushes all but stop this.

2. Set Toe to zero. With those bushes there should be no movement fore/aft as the weight transfers so you don't need toe to compensate :y
Logged
Onanists always think outside the box.

Muroman

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Finland
  • Posts: 263
  • Cars for life
    • Opel Omega MV6 -99
    • View Profile
Re: Understeer
« Reply #40 on: 19 November 2018, 05:57:44 »

Camber 1.2 degree.
Toe is now 0, on scale +-0.05mm.

It is understeering again  ::) But yes the front tires are shot from the inside side, so I'll drive the winter with this setup.

Couldn't get to 1.1 degree camber on the right side of the car, anyone know why? I mean I have the adjustment on limit.
Logged
Driving dark blue - 1999 - MV6 - Automatic
Earlier drive was silver - 1995 - MV6 - Manual

Doctor Gollum

  • Omega Queen
  • ********
  • Online Online
  • Gender: Male
  • In a colds and darks puddleses
  • Posts: 10928
  • If you can't eat them, join them...
    • Feetses.
    • View Profile
Re: Understeer
« Reply #41 on: 19 November 2018, 06:24:03 »

Manufacturing tolerance of pattern parts...

Basically, use a suitable file to slightly extend the oval slot on the top strut/hub bolt ;)

Once the tyres have started to wear in a particular way, they will continue to wear unevenly even if the cause has been addressed.

Tweak the camber adjustment, fit new tyres and report back after a few k:s ;)
Logged
Onanists always think outside the box.
Pages: 1 2 [3]  All   Go Up
 

Page created in 0.137 seconds with 21 queries.