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Thread: WCM Ultralite S2k Alignment

  1. #1
    Join Date
    Nov 2009
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    18

    Default WCM Ultralite S2k Alignment

    Recently picked up a WCM Ultralite S2k. I have the manual, but had some questions.

    The manual mentions Charlie using 2.5mm of rear toe OUT per side.
    Rest of alignment was about -2.5 degrees of camber front, -2.2 degrees rear
    Front toe was -.2mm per side

    Other alignments I was able to dig up among forum members typically had a bit less camber front and rear often paired with slight toe in front and often 0 toe in the rear.

    Never dealt with a 7, but often run 0 toe all around in a Miata used for autocross.

    I am looking to autocross the car, but for right now I would like to tame a very nervous car(mainly over bumps). I am also looking to shim the tie rod end to level out the rack.
    Shocks are the QA-1 with 500f/400r springs(I am told, but not sure).
    Just looking for some direction on alignment.
    Last edited by imarcr2; 01-12-2020 at 05:20 PM.
    WCM Ultralite S2K and a bunch of Miatas

  2. #2
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    Nov 2009
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    Name:  Screen Shot 2020-01-12 at 4.08.24 PM.jpg
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    WCM Ultralite S2K and a bunch of Miatas

  3. #3
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    Nov 2009
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    Name:  Screen Shot 2020-01-12 at 4.08.01 PM.jpg
Views: 113
Size:  94.4 KBLittle concerned seems as if the tie rod ends need to move down slight lightly but they are already resting on the spindle
    WCM Ultralite S2K and a bunch of Miatas

  4. #4
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    Nov 2009
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    The angle of the tie rods are between 2.5 and 3.5 degrees off of level...they in fact go upward from the center of the car to the attachment points on the spindle. Moving the rod ends under the spindle would result in them being way further off of level than they are now so not sure how I can level the arms....maybe raise ride height?
    WCM Ultralite S2K and a bunch of Miatas

  5. #5
    Join Date
    Jan 2006
    Location
    St.Louis, MO
    Posts
    976

    Default

    I ran my tie rods to the bottom of the spindle arm.
    I ran 4 deg caster, - 1/4 deg camber, 1/16 toe in (front)
    -1 camber, 0 toe (rear)

    The guys more into autocrossing ran the front camber at -1 to -1.5, toe in around .1" . Rear camber -1 to -1.5, and 0 toe
    Jerry

    WCM Ultralite S2K (Sold 8/17)

  6. #6
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    Nov 2009
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    18

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    Jerry did you get the tie rods to perfectly level or just close? Not sure my 3.5 degrees from level is really bad or just not ideal.
    WCM Ultralite S2K and a bunch of Miatas

  7. #7
    Join Date
    Jul 2007
    Location
    Bakersfield, Ca
    Posts
    1,668

    Default

    Hi,
    Loren did a lot of racing with his cars and gave me spring recommendations of 450-550f/250-275r. Loren said he liked his car on the stiff side and had 550/275. I have 450/250 and think it's pretty good for road/canyons.
    .



    "HECK IS WHERE PEOPLE GO WHO DON'T BELIEVE IN GOSH"


    2008 Ultralite S2K
    2016 Mazda CX-5
    2008 Volvo C30
    2005 Mini Cooper
    1999 Miata
    1967 Chevy C10

  8. #8
    Join Date
    Jan 2006
    Location
    St.Louis, MO
    Posts
    976

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    Quote Originally Posted by imarcr2 View Post
    Jerry did you get the tie rods to perfectly level or just close? Not sure my 3.5 degrees from level is really bad or just not ideal.
    Actually I never checked them to see if they were level or not. I believe that would change with ride height.

    My ride height was 5 1/4 rear, just in front of the rear fender, and 4 1/4 in the front, where the frame cuts in toward the center. I had 500f/400 r springs. ( at this ride height I needed a skid plate under the sump to aggressively drive it on back roads)

    Also in the rear, the lower front traverse rod was moved from the vertical bolt between the two mounting points, up to the upper mounting point, and the vertical bolt was removed.
    Last edited by powderbrake; 01-14-2020 at 10:38 AM.
    Jerry

    WCM Ultralite S2K (Sold 8/17)

  9. #9
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    Nov 2009
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    18

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    "Also in the rear, the lower front traverse rod was moved from the vertical bolt between the two mounting points, up to the upper mounting point, and the vertical bolt was removed."

    Could you explain this?


    Thanks for all the help
    WCM Ultralite S2K and a bunch of Miatas

  10. #10
    Join Date
    Jan 2006
    Location
    St.Louis, MO
    Posts
    976

    Default

    Quote Originally Posted by imarcr2 View Post
    "Also in the rear, the lower front traverse rod was moved from the vertical bolt between the two mounting points, up to the upper mounting point, and the vertical bolt was removed."

    Could you explain this?


    Thanks for all the help
    The original Ultralites came with a vertical rod so you could adjust the location of the rod end. Take out the vertical bolt and secure the rod end in the upper frame mount position. Here is a pic of the vertical rod.
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    Here is a pic with the rod end in the upper mount. Sorry about the picture orientation.

    Name:  DSC_6406_Small.jpg
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    Jerry

    WCM Ultralite S2K (Sold 8/17)

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