c-tech chassis stabilizer bar

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Chassis and Wheels

c-tech chassis stabilizer bar

WorkZone

1,000 RPM
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WorkZone

1,000 RPM
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Jul 1, 2008
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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



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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 ~
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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.*
 

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Last edited:

sktan

Known Member
Senior Member

sktan

Known Member
Senior Member
Jul 29, 2008
277
1
1,518
got 4 point front bar for waja ? please pm me ..thanks
 

WorkZone

1,000 RPM
Senior Member

WorkZone

1,000 RPM
Senior Member
Jul 1, 2008
1,086
0
1,636
Jalan PJS 3/1
www.facebook.com
got 4 point front bar for waja ? please pm me ..thanks
yup...the front bar for waja only have 2 and 3 points.u got pm for the price.thank you.

bro got any for the newest mazda3
pm mi thanks
ya...we have the bar for mazda 3 that just launch at july 09...u got pm.

thumbs up for workzone... good seller...
yea...thanks for buying full set c-tech for your new suzuki swift sport bro...hope u wil anjoy your driving.hahaha.
 

kenken

500 RPM
Senior Member

kenken

500 RPM
Senior Member
Oct 7, 2005
931
2
1,518
Ipoh
eventhough i havent fix the bars to my car yet.. but i can already feel the stiffness.. hehe
 

WorkZone

1,000 RPM
Senior Member

WorkZone

1,000 RPM
Senior Member
Jul 1, 2008
1,086
0
1,636
Jalan PJS 3/1
www.facebook.com
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~
 
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