c-tech chassis stabilizer bar

Discussion in 'Chassis and Wheels' started by WorkZone, Oct 19, 2009.

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  1. WorkZone

    WorkZone Senior Member
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    C-tech chassis stabilizer bar

    why c-tech?


    chassis in general :

    Most street driven cars are manufactured using a construction technique known as unibody spaceframe chassis construction. This means that the body itself provides the stiffness and structure of the vehicle. Many older vehicles had separate stiffening structures and bodies, the body being solely designed as an aesthetic exterior and as a safety and environmental housing for the passengers. This technique is both heavier and requires more materials raising costs. Modern vehicle chassis are made entirely out of formed sheet metal sections which are usually spot welded together to form the structure of the vehicle. Designing these chassis is no easy task, the geometries being incredibly complex. Making these designs both cost effective, lightweight, stiff and safe is always a tradeoff.

    Production vehicle chassis vary substantially in the degree to which they maximize the variables previously mentioned. Higher performance vehicles are often designed with maximum stiffness and lightweight in mind. A lighter weight chassis promotes an overall lower vehicle weight and better performance. Chassis stiffness though is also important for vehicle performance.

    As a vehicle is driven, various forces are applied by the suspension on the chassis. This occurs under braking, cornering, driving surface variations, or any other vehicle movement. In higher these loads are, the more is demanded of a chassis. The chassis obviously has to be strong enough not to fail under these loads, but beyond that it must not deflect appreciably. Suspensions are carefully designed to position the wheels and tires of the vehicle for optimum performance under all conditions of vehicle use. If the chassis deflects when the forces are high, it causes suspension mounts and attachment points to temporarily shift, which destroys the careful suspension design when it is needed most. Chassis stiffness is most important in high performance or racing cars, where suspension loads are at their highest and suspension adjustment is most critical.

    To combat chassis flex, many people desiring improved performance out of their unibody cars fit chassis stiffening devices onto their vehicles. The belief is that these bars, often fitted between the strut towers of the vehicle, and/or across the engine bay or connecting the front cross member with the floor pan, improve chassis rigidity and reduce flex under high load driving.


    chassis development :

    Throughout the development of the motor vehicle, many different types of chassis have been designed and tested. Through the years many advances have been made in chassis technology, and many old technologies have been thrown out as inferior. Here are some of the basic types which were or are in common use:

    Ladder Chassis
    Major structure of chassis is supported by central rails connected by cross braces. Used in vehicles of the 60s, and still used in trucks and SUVs due to good isolation between passenger cabin and road vibration. Since it is two dimensional it is not very stiff, and needs to be built heavier than a good space frame.

    Tubular Space Frame
    Very strong chassis construction technique, often used in race cars and ultra high performance ($$$) sports cars. The structure is formed from individual tubes, usually welded into a web of supports. Actually cheaper to build for small production runs, since hand production is involved. This technique is not feasible for general production vehicles due to the fact that automated production is next to impossible.

    Unibody Chassis
    This type of chassis is constructed of formed sheet metal pieces all spot welded together to form a metal box which makes up the structural and functional body of the car. Usually the metal used is steel, but some newer vehicles use aluminum to reduce material cost. Steel is usually formed by stamping with dies. Aluminum can be formed by stamping, but newer cars are using advanced hydroforming techniques to form panels. These structures are usually relatively stiff, although they are not necessarily designed to optimize this. They are generally heavier than a tubeframe structure, but also safer. These types of chassis are usually more feasible for large production vehicles, as tooling is very expensive.

    Composite Monocoque Chassis
    The lightest, most advanced performance vehicles ($$$$$$) employ this strategy for their chassis. Similar to unibody in form, but many different advanced materials are employed, such as fiberglass, carbon fiber, Kevlar, or glass fiber reinforced polymer (GFRP). These chassis are light, stiff, and expensive to produce. Making composite structures is very labor intensive, and the materials themselves are expensive. However the end product if correctly designed is the lightest and stiffest possible. The most advanced racecars use these structures, as do some supercars (such as the Porsche 959 or the Mclaren F1).


    unibody chassis test :

    The Model

    A simple chassis model was designed in Pro/Engineer then imported into Abaqus as a shell. The face which represents the trunk was removed in Abaqus, and the geometry was stitched and reduced until the program was happy. The Pro/E model is visible in the attached drawing.

    The Abaqus model was meshed using primarily quad-dominant shapes. Large rectangular areas were redefined as quad, and areas of irregular shape were redefined as tri. The Abaqus shell, mesh and model are visible in the following figures.

    Equal and opposite forces of 1000 pounds each were applied to each of the strut towers. The chassis was held by the back of the chassis. This boundary condition and the loading is visible in the following figures.

    What is Abaqus
    ABAQUS is a highly sophisticated, general purpose finite element program, designed primarily to model the behavior of solids and structures under externally applied loading. ABAQUS includes the following features:

    The Brace
    Only one type of brace was tested in the analysis. This is because Abaqus was getting very quarrelsome and time was limited. The brace tested was the strut tower brace, depicted in the following figure. It attaches between the towers (where the load is applied). The same loads were then applied… and the results were amazing.

    The Results
    Both tests were run, and the stiffness of the model was far higher than expected. The exact reason for this is unknown, but it is probably due to some unpredicted idealization made in the model. The stiffness obtained was around 20,000 ft-lbs per degree of deformation, whereas most car chassis obtain 2000-3000 ft-lbs in a very well designed car. This difference does not make much difference however, as the study is mostly concerned with the increase in stiffness obtained from bracing, not with what the stiffness actually is. First we will look at the deformation pictures, then view some comparative graphs. Both graphs are displayed at 25 times deformation scale.

    It is very plainly visible that the deformations are much lower. To get concrete numbers, some plots have been made to show the change in deformations. The plots ending in NB stand for No Bracing, and the ones which end in TB are for with Tower Brace. The plot of FrontEdge is the deformation of the bottom front edge of the chassis, and shows the angular twist of the chassis. The plot of CrossMember is a plot of the deformation along the member which runs between the wheel wells at the bottom of the vehicle. This graph is more indicative of how much effect the deformation of the chassis is having on the suspension geometry, as the suspension is often mounted to this member. Finally, the Tower plot is a plot of the left and right tower displacements, which also is a good indication of suspension movement caused by chassis flex. Here they are:

    The unbraced deformations are clearly much higher. On the front edge around 75% higher, and about four times higher on the cross member. Tower displacement went from .9 to 2.1 mm, and increase of over twice.

    Conclusions
    The benefits of the strut tower brace seem to be validated. Chassis flex at the key suspension points went down considerably. Many experienced drivers claim to be able to feel the stiffness increase in a chassis when such a brace is added, and from my results it seems as if that may be possible.

    for more details please visit C-tech tuners

    Proton

    wira/putra/satria/GTI
    front bar
    fender bar
    rear bar
    rear upper bar
    room bar
    front lower arm bar
    mid lower arm bar
    rear lower arm bar
    side bar

    waja/gen-2/persona
    front bar
    fender bar
    rear bar 8
    room bar
    front lower arm bar
    mid lower arm bar
    rear lower arm bar
    side bar

    saga/iswara
    front bar
    fender bar
    rear bar
    rear upper bar
    room bar
    front lower arm bar
    side bar

    saga BLM
    front bar
    rear bar
    front lower arm bar
    rear lower arm bar

    perdana
    front bar
    fender bar
    rear bar
    room bar
    front lower arm bar
    mid lower arm bar
    rear lower arm bar
    side bar

    savvy
    front bar
    front lower arm bar
    rear lower arm bar

    satria neo
    front bar
    fender bar
    rear bar
    front lower arm bar
    rear lower arm bar



    Perodua

    myvi
    front bar
    fender bar
    rear bar
    room bar
    front lower arm bar
    rear lower arm bar
    side bar

    viva
    front bar
    rear bar
    front lower arm bar
    rear lower arm bar

    kenari
    front bar
    fender bar
    rear upper bar
    room bar
    front lower arm bar
    side bar

    kelisa
    front bar
    fender bar
    rear upper bar
    room bar
    front lower arm bar
    side bar

    nautica(5 seater)
    front bar
    front lower arm bar
    rear lower arm bar
    side bar

    kancil
    front bar
    fender bar
    rear bar
    rear upper bar
    room bar
    rear lower arm bar

    kembara
    front bar
    front lower arm bar



    Honda

    accord CG4
    front bar

    accord CM5 2.4
    front bar
    front lower bar
    rear lower bar
    side bar

    accord CL7/CL9
    fender bar
    front bar
    front lower bar

    accord SM4
    front bar
    rear bar
    front lower bar

    accord SV4
    fender bar
    front bar
    rear bar
    front lower bar
    rear lower bar

    accord 2008
    front lower bar

    airwave
    front bar
    front lower bar

    CF4 / CL1
    fender bar
    front bar
    rear bar
    room bar
    front lower bar
    rear lower bar
    rear torsion bar

    jazz
    fender bar
    front bar
    rear bar
    rear upper bar
    room bar
    front lower bar
    rear lower bar

    city 1.5
    fender bar
    front bar
    rear bar
    front lower bar
    rear lower bar

    city sx-8 1998
    front bar
    rear bar

    civic EG(4D)
    fender bar
    front bar
    rear bar
    front lower bar

    civic EK
    fender bar
    front bar
    rear bar
    front lower bar

    civic EF
    fender bar
    front bar
    rear bar
    room bar
    front lower bar

    civic ES
    fender bar
    front bar
    rear bar
    room bar
    front lower bar
    rear lower bar
    side bar

    civic 1.7/2.0
    fender bar
    front bar
    rear bar
    room bar
    front lower bar
    rear lower bar
    side bar

    civic FD
    front bar
    front lower bar
    mid lower bar
    rear lower bar
    side bar

    civic EP3
    front bar

    CRV 1996
    front bar

    CRV RDI 1999
    front bar
    rear bar

    CRV 2007
    front lower bar
    mid lower bar
    rear lower bar

    edix
    front bar
    front lower bar
    rear lower bar

    fit 2008
    fender bar
    front bar
    rear bar
    rear upper bar
    room bar
    front lower bar
    mid lower bar

    integra DC2
    fender bar
    front bar
    rear bar
    front lower bar

    integra DC5
    front bar
    rear bar
    rear upper bar
    room bar
    front lower bar
    rear lower bar
    side bar

    odyssey
    front bar
    front lower bar
    rear lower bar

    prelude 1993
    fender bar
    front lower bar

    stream 1999
    front bar
    front lower bar

    stream 2007
    front bar
    front lower bar
    rear lower bar



    Toyota

    altis
    fender bar
    front bar
    rear bar
    room
    front lower arm bar
    rear lower arm bar

    altis 2008
    front bar
    rear bar
    front lower arm bar
    rear lower arm bar

    axio
    front bar
    front lower arm bar

    AE 80/82
    fender bar
    front bar
    rear bar
    front lower arm bar
    rear lower arm bar

    AE86
    fender bar
    front bar
    rear bar
    room
    front lower arm bar
    rear lower arm bar
    side bar

    AE92
    fender bar
    rear bar
    front lower arm bar

    AE 101/111
    fender bar
    front bar
    rear bar
    room
    front lower arm bar
    side bar

    altezza
    front bar (1998 model also)
    rear bar
    front lower arm bar
    rear lower arm bar

    alphard 2.4
    front bar
    front lower arm bar
    rear lower arm bar

    avanza 1.3/1.5
    front bar
    front lower arm bar
    rear lower arm bar

    caldina
    front bar
    front lower arm bar
    rear lower arm bar
    side bar

    camry 1998
    front bar
    front lower arm bar

    camry 2.4 2002
    front bar
    front lower arm bar

    camry 2002 (acv 36R)
    front bar
    front lower arm bar
    rear lower arm bar

    camry 2.4 2007
    front bar
    front lower arm bar

    celica 2003
    fender bar
    front bar
    rear bar
    room
    front lower arm bar
    mid lower arm bar
    rear lower arm bar


    ep 80/82/90/91
    fender bar
    front bar
    rear bar (ep80/82)
    rear upper bar (ep80/82)
    room (ep80/82)

    front lower arm bar
    mid lower arm bar
    rear lower arm bar

    estima 2000
    front lower arm bar
    mid lower arm bar
    rear lower arm bar

    estima 2006
    front bar
    front lower arm bar
    mid lower arm bar
    rear lower arm bar
    rear torsion bar

    harrier
    front lower arm bar (new model only)

    hiace
    front lower arm bar
    rear lower arm bar
    side bar

    hilux
    front lower bar

    innova 2.0
    front lower arm bar
    rear lower bar

    ipsum 2.4
    front bar
    front lower arm bar
    rear lower arm bar


    IST
    front bar
    front lower arm bar

    KE70
    fender bar
    front bar
    rear bar
    front lower arm bar

    mark x
    front lower arm bar
    rear lower arm bar

    MR2
    fender bar
    front lower arm bar

    MRS
    fender bar
    front lower arm bar
    mid lower arm bar
    rear lower arm bar

    RAV 4 1995
    front bar
    front lower arm bar

    RAV 4 2.4 2007
    front bar
    front lower arm bar
    rear lower arm bar

    rush (5 seater)
    front bar
    front lower arm bar
    rear lower arm bar
    side bar

    rush (7 seater)
    front bar
    front lower arm bar
    rear lower arm bar

    unser
    front lower bar
    mid lower bar

    vios
    fender bar
    front bar
    rear bar
    rear upper bar
    room bar
    front lower bar
    rear lower bar
    side bar

    vios 07
    front bar
    rear bar
    front lower bar
    mid lower bar
    rear lower bar
    rear torsion

    yaris
    front bar
    front lower bar
    mid lower bar
    rear lower bar

    wish 1.8
    front bar
    front lower bar
    rear lower bar

    wish 2.0
    front bar
    front lower bar
    rear lower bar



    Nissan

    AD resort
    front bar
    front lower bar

    cefiro A31
    fender bar
    front bar
    rear bar
    room bar
    front lower bar

    cefiro A32
    front bar
    rear bar
    front lower bar


    cefiro A33
    front bar

    elgrand 3.5
    front lower bar
    mid lower bar
    rear lower bar
    rear torsion bar

    grand livina 2008
    front bar
    front lower bar
    rear lower bar

    latio
    front bar
    rear bar
    front lower bar
    rear lower bar

    march
    front bar
    rear bar
    front lower bar
    mid lower bar

    sentra B13
    fender bar
    front bar

    sentra B14
    fender bar
    front bar

    sentra N16
    fender bar
    front bar
    rear bar
    front lower bar

    silvia S13
    fender bar
    front bar
    rear bar
    front lower bar

    silvia S14/S15
    fender bar
    front bar
    front lower bar
    side bar

    skyline GTR
    fender bar
    front bar

    skyline R33/R34
    fender bar

    skyline R32
    fender bar
    front bar
    rear bar
    front lower bar
    mid lower bar
    rear lower bar



    Mitsubishi

    air trek
    front bar
    front lower bar
    mid lower bar
    rear lower bar
    side bar

    colt (mivec)
    front bar
    front lower bar
    rear lower bar

    CS2/3/5
    front bar
    rear bar
    front lower bar
    rear lower bar

    EVO 1/2/3
    fender bar
    rear bar
    front lower bar

    EVO 4/5/6
    fender bar
    rear bar
    front lower bar

    EVO 7/8/9
    front bar
    rear bar
    front lower bar
    side bar

    FTO
    front bar
    rear bar
    room bar
    front lower bar
    mid lower bar
    side bar

    galant VR4
    fender bar
    front bar
    rear bar

    i
    front bar
    front lower bar

    lancer 1996
    fender bar
    front bar
    rear bar

    lancer 2007
    front bar
    rear bar
    front lower bar
    rear lower bar



    Mazda

    323 BF
    front bar
    rear bar
    front lower bar

    323 BG
    fender bar

    Mazda 3
    front bar
    front lower bar
    rear lower bar

    Mazda 6
    front bar
    front lower bar

    MX5
    front bar
    rear upper bar
    front lower bar
    mid lower bar
    rear lower bar

    RX7 FC
    fender bar
    front lower bar

    RX8
    rear bar
    front lower bar
    mid lower bar
    rear lower bar



    Subaru

    forester
    fender bar

    impreza GC8 (V.4)
    front bar
    front lower bar
    rear lower bar
    side bar

    impreza (V.8)
    front bar
    front lower bar

    STI 7/8/9
    front bar
    rear bar
    front lower bar
    side bar

    STI 8(auto)
    front lower bar



    BMW

    E30
    front bar
    rear bar
    front lower bar

    E32
    front bar
    front lower bar

    E34
    front bar

    E36 (328)
    front bar
    rear bar

    E36-1/E36-2 (318)
    front bar
    rear bar

    E39
    front bar
    front lower bar

    E46 (318)
    front bar
    rear bar

    E46 (325/328)
    front bar
    rear bar
    front lower bar

    E60
    front lower bar
    rear lower bar



    Volvo

    240
    front bar
    front lower bar

    S40/V40
    front bar
    rear bar
    front lower bar

    S60
    front bar
    front lower bar
    rear lower bar

    S70/V70/850/855
    front bar

    850
    front bar
    rear bar
    front lower bar
    rear lower bar

    S90/740
    front bar



    SMS ASK FOR BEST PRICE



    Best regards,

    Mr.Pang
    Business Development Manager
    Trade Retail

    MOBILE | +(60) 12 3768 205
    FAX | +(60) 3 9057 1436
    E-MAIL | workzone.auto@gmail.com

    kindly contact :
    work zone auto garage
    9-2,jalan pjs 3/59,
    sri manja quare 2,
    taman sri manja,
    46000 PJ,selangor.
    office: +603-77811168
    email: info@workzoneauto.com

    FOR MORE PRODUCTS AND PRICES PLEASE VISIT OUR WEBSITE (UNDER MAINTAINANCE):
    ~ Work Zone Auto Garage ~
    or BLOGSPOT :
    ~ satisfying your auto needs ~
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    for more c-tech details please visit C-tech tuners

    *dealer/workshop are welcome order in bulk to get special price.*
     

    Attached Files:

    #1 WorkZone, Oct 19, 2009
    Last edited: Sep 21, 2010
  2. WorkZone

    WorkZone Senior Member
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    sorry for the late reply...PM replied dude.thank you.
     
  3. WorkZone

    WorkZone Senior Member
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    can buyer post some comment or feedback here?so quiet...haha.thank you.
     
  4. WorkZone

    WorkZone Senior Member
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    thread updated...!!!
     
  5. riezalz

    riezalz 5 Year | Silver

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    toyota AE101 ada ke bos??

    how much?
     
  6. WorkZone

    WorkZone Senior Member
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    sure bro...u got pm! thank you.
     
  7. sktan

    sktan Senior Member
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    got 4 point front bar for waja ? please pm me ..thanks
     
  8. chong+

    chong+ Senior Member
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    bro got any for the newest mazda3
    pm mi thanks
     
  9. kenken

    kenken Senior Member
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    thumbs up for workzone... good seller...
     
  10. WorkZone

    WorkZone Senior Member
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    yup...the front bar for waja only have 2 and 3 points.u got pm for the price.thank you.

    ya...we have the bar for mazda 3 that just launch at july 09...u got pm.

    yea...thanks for buying full set c-tech for your new suzuki swift sport bro...hope u wil anjoy your driving.hahaha.
     
  11. WorkZone

    WorkZone Senior Member
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    inbox fulled...now clear already.can pm me again man.thank you.
     
  12. WorkZone

    WorkZone Senior Member
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    kawan...siapa ada feedback please post here ok?thank you so much.
     
  13. kenken

    kenken Senior Member
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    eventhough i havent fix the bars to my car yet.. but i can already feel the stiffness.. hehe
     
  14. WorkZone

    WorkZone Senior Member
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    ya man.when u want come pasang?your bar is sleeping in my store few weeks adi.hahaha.thanks for paying the money advance.

    ---------- Post added at 12:11 PM ---------- Previous post was at 10:45 AM ----------

    work zone is going to be pro seller very very soon...thanks every1~
     
  15. radhie

    radhie Senior Member
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    bro,for kelisa,wht type of bar do u have..
    pm me the price..tq
     
  16. kenken

    kenken Senior Member
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    coming soon ya... dont worry bro... will contact you hahaha
     
  17. WorkZone

    WorkZone Senior Member
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    work zone upgrade to pro seller.thank pm more space adi.more and more product to come...thank you!!!
     
  18. WorkZone

    WorkZone Senior Member
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    sunday bump,good mood on good sales.
     
  19. unionjack_82

    unionjack_82 Senior Member
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    got for kia spectra??how many part got??pm me with price..thank alot
     
  20. WorkZone

    WorkZone Senior Member
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    bring up my post~!
     
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