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CIH

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Posts posted by CIH

  2. Alignment Settings.

    in General Problems / Discussions

    Posted

    KF would take notice if you declined a few calibrations due to problems with the vehicles identity.

     

    Does your machine hold the Jap factory spec's?... the V300 is in there, anyway if you get stuck "call me".

     

    Not that uncommon tbh. We're near where all the Manchester Prem'ship Footballer's live so we see alot of exotica.

  4. Alignment Settings.

    in General Problems / Discussions

    Posted

    I don't know but Pro Align have been down for scheduled vists in the past couple of months so I assume we're not too far behind. That is, if KF pay for the updates. I don't suppose they're free.

     

    Shame as I was really looking forward to that Celica. Now I know why wheel size is an issue I may have had a look but this was pre-WIM.

     

    Incidentally, speaking about the database, I had a real head scretcher a few days ago. Lexus V300 Twin Turbo JZS161 Vertex Edition

    aristo_v300_vertex_edition.jpg

    No listing for V300 either Lexus ot Toyota. Full of Jap language stickers (under bonnet, door slams etc) so assumed Jap import but badged Lexus ? Aristo carpets and runners benneth doors but no listing under either Toyota or Lexus. Nearest thing I could find was uk Lexus GS300 JZS160. Oh and I assume "vertex" is a special edition and the wheels were bigger than stated on the placard.

  5. CIH's Training Thread

    in Geometry

    Posted

    I'm wondering what implications there are regarding Thrust Angle using such adjustment.

     

    If there is no individual toe adjustment then how can TA be corrected ?

     

    oh and thanks for the praise btw.

     

    edit: I also spotted how to switch between Thrust Angle ALignment, Total 4 wheel Alignment etc. I had always assumed Hunter defaulted to whatever applied to the specific car/set-up.

  6. CIH's Training Thread

    in Geometry

    Posted

    Good work :angry: :) ..... As a heads up regarding "I beam's" most times there is thrust adjustment if you release all the mount points.

     

    Yeah that was in the Illustrate Adjustments tab but we only had about 20 minutes. I haven't tried it before and didn't fancy experimenting so late in the day.

    Is that true of most beams ? Never seen the option except in the case of this A6.

  9. CIH's Training Thread

    in Geometry

    Posted

    Had a better day today. This time, I set toe before the camber lift, then readjusted toe. Seemed to go much smoother. Wouldn't have been do-able without the lift so I'm glad we perservered with it.

     

    Report.jpg

     

    Put a workbuddy's A6 on the rig too. Beam suspension on the rear. :angry:

     

    Told him it was just like a big Fiesta ha ha :)

  13. CIH's Training Thread

    in Geometry

    Posted

    Well I'd expect the car to feel "lazy" turning against the thrust ie; to the right but I read in the technical theory areas that the car would only be sensertive to the thrust factor beyond 30'. Or is that just @ DA ?

     

    Slightly off-topic but I had a tough day today. Had an E46 come-in. As usual the customer had left the car and the damn supervisor hadn't asked any meaningful questions ("just wants it doing, oh it pulls to the left"). It had been to a garage earlier that day and had bushes, ball joints etc checked. Anyway, lined her up and spent ages fighting the camber as it just wouldn't stay-put. Car comes back about 10 minutes later apparantly just the same. Got to speak to the fella and had a test drive. Car was pulling and you could feel the car shift when applying any steering action to the left. Turned out bottom ball joints had play and the wishbone compliance bush on the N/S/F was shagged. So, lessons learned:

    1) Don't take anyone's word for anything and do the checks yourself

    2) If the tyres look fine then it probably isn't geometry (that is right, isn't it ?)

    3) Don't let idiots make you rush

     

    One other thing too. Had a late model Astra SRi in. Tried to do front camber with the axle lifted and only managed about 0.20 improvement. Locked it in place, lowered the jack (following the on-screen prompts) and the camber had shifted to spec (about 0.60 total movement). This isn't the first time camber has shifted like that. Any ideas where I may be going wrong as it totally undermines any confidence I have in the adjustments ?

  15. CIH's Training Thread

    in Geometry

    Posted

    I had never even thought about Thrust Angle in that context.

    So is that why TOOT is required ? To ensure correct Thrust Angle deviation ? Or are there other benefits too ?

    Also, does the outer (steered) wheel display any special infulence/behviour ? Or is it simply passive ?

  17. CIH's Training Thread

    in Geometry

    Posted

    TOOT begins as soon as you deviate from DA but it's not discernible to us until around 10 degrees.

     

    For correct handling the inner wheels deviation from DA, lets say 10 degrees will extend a 10 degree curve to the expected zero thrust angle. This makes the thrust angle an imaginary pivotal point allowing the car to corner correctly.

     

    It's for this reason the machine prompts you to correct the thrust before you attempt any corrections at the front. it's also for this reason the image i displayed is wrong or the TOOT is wrong :(

     

    post-2-1222376205.jpg

     

    If everything is correct, once TOOT is effective the angle of the inner steered wheel actually defines the thrust angle heading ?

  18. CIH's Training Thread

    in Geometry

    Posted

    So once TOOT is initiated, the arc of the inner wheel needs to intersect with our imaginary rear thrust pivot point ?

    So how should that image be adjusted to be correct ?

    I understand the concept but I'm struggling to visualise it.

  19. CIH's Training Thread

    in Geometry

    Posted

    Good to see you are using the secondary angles.....

     

    A few points..... Did you add weight to the car?

     

    The SAI is just an angle and never positive or negative but it's involvement with the IA will determine a + - position depending if the lines interact above or below the tyres contact patch.

     

    You are correct to assume the camber needed adjustment but the weights if needed are vital!!.

     

    Off topic slightly your Hunter is it the DSP600?

     

    And did you think about the question i asked you about this>

    post-2-1222376205.jpg

     

    What's wrong about this example?

     

    In your picture, looks like the steered wheels are turning through a parallel arc. In that picture, there is no TOOT as such.

     

    Yes DSP600.

    So that's why I can't find an SAI bargraph huh ?

    The BMW had the weights in. Is the specific positioning important ? In the nearside, I had two on passenger seat and two in the foot well. Offside, one in foot well and 3 on the seat so as not to block brake pedal depresser and steering-wheel clamp.

  20. CIH's Training Thread

    in Geometry

    Posted

    Looks like the steered wheels are turning through a parallel arc. In that picture, there is no TOOT as such.

     

    Don't want to stray off track but can I have your advice on this Alignment I had in today please:

     

    BMW E93 ('07) 325D CoupeCabriolet:

     

    DSC00020-Small.jpg

    DSC00021_small.jpg

     

    Came in for brake work but it was noted the front tyre outer tread area displayed heavier wear than the central tread. Feathered wear, nothing violent.

    The SAI out of spec suggests to me the SR can't migrate across the tyre correctly but 2 problems. I didn't have an OEM spec castor figure from the database and, because I only had a number and a colour (red), I had no idea whether SAI was too far positive or negative. I thought I could move camber to compensate but didn't have enough info to make confident adjustments. In the end I adjusted the back end to be symmetrical and advised the rig indicated problems with the front suspension, possibily the suspension arms.

    The N/S/F (left) ride-height was a few mm or so away from O/S/F (about 6/7 IIRC). No clear signs of anything bent, broken, impacted etc.

  21. What car to Get ?

    in General Problems / Discussions

    Posted

    Might leave it a couple of months as the extra £400-£500 looks to make the difference. Plus the show season is over and I don't need a car day-in, day-out.

     

    Having said that, I'm getting really bored without one and it's really tricky trying new things on the Hunter Rig with customer's cars :)

     

    No

     

    :) why not ? It's such a funky, crazy looking little wedgy thing. And it's sounds really good with the motor buzzing away behind your shoulder.

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