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Location:
Brisbane
Registered:
November 2003
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bigger rear sway bar
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Tue, 16 November 2004 12:55
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think it would help?
front has whiteline adjustable sway bar and koni yellow.
rear had kyb shocks and standard swaybar.
is a stiffer rear bar going to reduce this roll?
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Location:
NSW, Sydney
Registered:
April 2004
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Re: bigger rear sway bar
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Tue, 16 November 2004 13:03
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suck it and see
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Location:
Melbourne
Registered:
August 2002
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Re: bigger rear sway bar
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Tue, 16 November 2004 13:24
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what springs ur using?
maybe some with higher spring rate?
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I supported Toymods
Location:
Perth, WA
Registered:
May 2003
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Re: bigger rear sway bar
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Tue, 16 November 2004 13:27
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yes it will
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I Supported Toymods
Location:
Perth
Registered:
May 2004
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Re: bigger rear sway bar
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Tue, 16 November 2004 13:49
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it might not....
looks to me like u have a single spinner yeah? i have both rear and just recently front bars...both are adjustable but even with the rear on tightest i couldnt eliminate this roll when cornering hard...didnt know what the reason was.....after i got LSD it seemed to go away, all i can think of is that the roll was being created by the changing torque between the rear wheels, every time i would corner the inner wheel would lift and spin which would make the car roll more for some reason
all fixed after got rid of the single spinner, my friend just fitted a 4age to his car and all of a sudden is experiencing the same problem which didnt exist with the 4ac....so im assuming that my guess is semi accurate
of course i could be spinning a complete load of shit and pepsi could be correct about the springs 
Adam
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I supported Toymods
Location:
Perth, WA
Registered:
May 2003
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Re: bigger rear sway bar
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Tue, 16 November 2004 14:19
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if you look at the rear wheels theyre both on the ground and the car is on an angle
with everything else the same a thicker swaybar will make a difference
the stock swaybar will be loaded up, it has nowhere else to go.
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I Supported Toymods
Location:
Perth
Registered:
May 2004
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Re: bigger rear sway bar
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Tue, 16 November 2004 14:59
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just because the wheel isnt off the ground doesent mean its not losing traction, tightening the rear sway might cause more bad then good....im dead set its the torque transition between driven wheels
but hey...were both just guessing really
Adam
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Re: bigger rear sway bar
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Tue, 16 November 2004 15:44
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| Bobski wrote on Wed, 17 November 2004 01:29 |
just because the wheel isnt off the ground doesent mean its not losing traction, tightening the rear sway might cause more bad then good....im dead set its the torque transition between driven wheels
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It doesnt matter if it is or isnt the cause...
A bigger rear sway bar will fix the problem, its what they are made to do 
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Location:
Adelaide
Registered:
May 2003
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Re: bigger rear sway bar
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Tue, 16 November 2004 20:43
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Heavier springs might help to reduce the sag in the first place. But yes, thicker rear swaybar.
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Location:
S.E suberbs, Vic
Registered:
December 2003
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Re: bigger rear sway bar
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Tue, 16 November 2004 21:53
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in the suspension guide (under the FAQ) it has been agreed that the standard sway bar is the go. Looking at this pic shows to me you need some heavy springs and quickly! I see both sides of the car rolling here.
Any chance of a pic from the other side?
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Location:
Campbelltown, NSW
Registered:
November 2002
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Re: bigger rear sway bar
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Tue, 16 November 2004 23:05
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It will, but not much of it. You need higher rate springs. Swaydars do reduce roll but not to the extent people want.
Swaybars are desighned more for fine-tuning the chassis. Say if you had understeer you would stiffen the rear bar.
Richard
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Location:
Brisbane
Registered:
November 2003
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Re: bigger rear sway bar
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Wed, 17 November 2004 00:52
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The springs are just kings lows.. and its hard to find out what rate they are.. Id assume stiffer springs would be the go..
heres a pic from the other side on the skid pan last weekend - looks a lot better from the other (lower) side 
assuming i wanted to keep the kings lows in for the tolerable ride stiffness - would a thick rear swaybar reduce this roll - but not increase understeer?
or should i stop being a pussy and just get some bone jarring springs?
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Location:
S.E suberbs, Vic
Registered:
December 2003
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Location:
Brisbane
Registered:
May 2002
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Re: bigger rear sway bar
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Wed, 17 November 2004 02:25
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Be careful making the rear end stiffer without balancing it at the front; a stiff back end and (relatively) compliant front end will increase the car's tendency to oversteer, and by the looks of those pics you don't need any more oversteer!
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I Supported Toymods
Location:
Perth
Registered:
May 2004
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Re: bigger rear sway bar
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Wed, 17 November 2004 03:47
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geting a bigger rear bar places even more strain on the outside wheel which doesent help if ur springs are soft...its like trying to stop yourself falling into a pool by whaving ur arms about......there is nothing to push off so all the bar does is twist your chasis...maybe it would help if the car had a full cage but the forces on that one poor rear spring would be tremendous
if you try doing a diagram with all the forces affecting the rear axel it all makes sense....since a stiffer bar is supposed to make both wheels sit at the same height, thats what it essentially does by pushing on the outside wheel to try to keep the chassis straight, but as it does that it actually lifts the inner wheel because if it cant pull the chassis straight the force has to go somewhere and with soft springs there is just too much roll to compensate for......
thats looking at it from a physics way  3 yrs of engineering couldnt of been a complete waste could it? 
Adam
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Location:
Brisbane
Registered:
November 2003
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Re: bigger rear sway bar
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Wed, 17 November 2004 04:26
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Thanks for the reply guys..
im actually happy with the feel of the car on the track - but looking back at the photos the body roll does seem pretty bad.
So with stiffer springs a bigger rear sway bar wont really be necessary.. ? I suppose thats in the FAQ.. off i go.
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Location:
Brisbane
Registered:
July 2004
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Re: bigger rear sway bar
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Wed, 17 November 2004 15:13
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stiffer rear bar equals more traction for front wheels in a cornering situation.Most cars are designed with a very light rear sway bar as they are designed to lose traction at the front first.[it is considered to be safer this way]
If you wish to change the stock balance to allow more grip at the front and a greater tendency for the rear to slide a little earlier,fit a bigger rear bar.As said earlier it will also lift one rear wheel more so if you are open diff [not LSD] you will have more trouble getting power down when cornering hard.
Wish it were more simple.Without good advice many suspension mods are misguided and would be way better left stock.
Best of luck. Cheers.Pete.
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