24mm sway in front and 23mm in the rear

[fuji]

How do you think this combination will handle??? Too much sway bar???

[Sabretooth]

hmm,

Well by the concept of what a sway bar does, you just created a setup has very little body roll, but should understeer as the car would naturally. Purpose of the rear sway bar is to allow the rear end to "firm up" to allow the car to understeer less. By adding another sway bar, this time to the front. It kinda nulls the point of adding your rear sway bar, or making it worse in the understeer catagory.

Only genuine benefit I can see offhand without having a car to test it on, very little understeer.


Hopefully someone can chime in and help you out a whole lot on this more than I can.

[Loren]

You mean "very little body roll". The car will, as you said, understeer.

You pretty well covered it.

[cali yaris]

Only genuine benefit I can see offhand without having a car to test it on, very little [body roll].

That is a huge benefit, and in mild to moderate driving makes the car really fun to drive. At the limits of traction (or in emergency conditions), however, understeer and oversteer become a major handling factor.

[YarisSedan]

Hmm understeer can be kinda fun sometimes but then very scarry and unpredictable at other times. The kind of your heart drops to your stomach id personally rather have oversteer that is easier for me atleast to correct.

[fuji]

Does anyone know how thick the stock sway bar is?

[ka0sx]

Does anyone know how thick the stock sway bar is?

*shrug* go outside with a micrometer?

[CASTREX]

Hmm understeer can be kinda fun sometimes but then very scarry and unpredictable at other times. The kind of your heart drops to your stomach id personally rather have oversteer that is easier for me atleast to correct.

You most got it backwards....

Nothing fun about understeer.... and is more predictable and easier to control to the average driver... Natural reaction for most of the people would be to release the gas and touch the brakes making the front tires grip again.

Oversteer in the other hand can be fun for a driver who know what it is doing...

[jouna]

can these upgrades lower 1/4 mile et

[RHDVIPbB]

can these upgrades lower 1/4 mile et

I doubt it. Granted with chassis bracing you will have less body flex/better transfer of power, but not sure how that would work on fwd car

[cali yaris]

anything that keeps the car from rocking backwards on launch and during shifts is good for 1/4 mile times. However, sway bars do not accomplish that task - springs, shocks and engine mounts do.

[CASTREX]

can these upgrades lower 1/4 mile et

Stiffer springs in the back would decrease the weight transfer to the back of the car during the launch. Ideally you will want the front of the car to seat a little lower than the back of the car.

On a FWD car for drag racing you want to keep the weight of the car in the front... avoiding as much as possible the weight transfer to the back.

So stiffer and higher springs in the back.

[IllusionX]

castrex is absolutely right.


and larger sway bar in the front will result in even greater understeer. I suggest not touching the front sway bar until your car is always OVERSTEERING.

[MUSKOKA800]

Does anyone know how thick the stock sway bar is?


I have to think that the material a manufacturer chooses has as much effect on the performance of an anti-swaybar as its diameter. Other factors could also come into play (shape, arm length/leverage factor, etc)

So, one manufacturers 24mm bar may offer the same qualities of anothers 22mm product.
Trail and error may be necessary when mixing brands.

[Loren]

I have to think that the material a manufacturer chooses has as much effect on the performance of an anti-swaybar as its diameter. Other factors could also come into play (shape, arm length/leverage factor, etc)

So, one manufacturers 24mm bar may offer the same qualities of anothers 22mm product.
Trail and error may be necessary when mixing brands.
While the idea here makes sense, it's not true. Swaybars are all made from steel, and the different types and grades of steel are of such little significance to the equation that they aren't even considered by engineers. The stiffness of the steel is a "constant" in the equation.

Unless you're building swaybars out of aluminum (dumb idea, aluminum doesn't make a good spring) or titanium ($$$$) or carbon fiber ($$$$$), swaybars of the same basic shape can be compared based primarily on their diameter.

Three things, really:
1. Diameter
2. Hollow or not (same diameter, but hollow = slightly less rate)
3. Length of lever arms.

[kngrsll]

can these upgrades lower 1/4 mile et

the zero to 60 time after springs/shocks went from 10.0 secs to 8.8 secs during our track testing for the Tokico HTS shocks.

[jouna]

the zero to 60 time after springs/shocks went from 10.0 secs to 8.8 secs during our track testing for the Tokico HTS shocks.
nice :thumbup:

[regal]

I wouldn't want a havier sway bar up front, you are only going to increase the alreasy bad understeeer problems this car has

[Russelt3hPirate]

I wouldn't want a havier sway bar up front, you are only going to increase the alreasy bad understeeer problems this car has

we're only talking 1mm larger front.

stock is at least 10mm larger than the non existent rear.

so, doing this setup wouldn't "increase" understeer over the stock setup.

it would increase understeer (in theory) over a Stock front/Aftermarket Rear sway Bar.

On some macPherson strut suspensions a larger front sway bar can increase front grip by maintaining more camber during compression.

Tamago and I have talked about this and he's convinced me that to really gain the benefits of a larger front sway bar you'd need a front LSD.

big sways, LSD, adjustable struts, nice stiff springs. could be a killer street worthy setup. :)

[mojoyaris]

I'm looking for a larger front sway bar. As it is I can get really nice rotation on the tight turns. I'm looking for a combo of front and rear sway bars without having to go to a higher front spring rate.

Anything you guys could recommend?

[ddongbap]

Make the toe kick outwards on the rear. That'll make it rotate like a champion.

[cali yaris]

I'm looking for a larger front sway bar.

http://shop.microimageonline.com/product.sc?categoryId=4&productId=126

[speed1]

Installed rear strut cause of big understeer. Little oversteer obtained.
Waiting for rear sway bar too. Big oversteer hoped.
Hate when open throttle outside turns and nose goes wide...
Oversteer rulez!!!!!!!!!

[cali yaris]

Neutral is best for me, I like to introduce oversteer with the throttle. :burnrubber:

[speed1]

Hey how can u introduce throttle oversteer in a naturally understeering fwd?
Only way to oversteer fwd with throttle is to make chassis oversteering by stiffening front.
They can stiffen front suspensions or use rear sway bar, infact strengthening rear they stiffen front.
Even better to stiffen front suspensions and to strengthen rear same time.
Then they have understeer entering corners.
It's the short sheet.
They have to choose what they want.
They have to know what they need.
They have to know what they can do.

[ilikerice]

You need to autocross every now and then to learn your car.

Throttle oversteer is easily done with FWD cars. Just gotta shift the weigh and either play with the throttle or if you are good at left foot breaking, you can tap the brakes while in a turn and get that rear end to push on out. Use with caution if you don't know how to control your car =)

[speed1]

Ye ye they stiffen rear and stengthen front they dont do any if they dont hard brake they hard steer they hard throttle.
Fwd cant go power oversteering.
They steer and throttle they stand they understeer.
Handbrake!

[ilikerice]

hand brake takes too long... even so, the yaris handbrake is horrible because they are drum brakes. Your RS may be better. Even then, if you don't modify your handbrake where it doesn't lock, you run the risk of pulling the handbrake while in a turn and when you try to move too fast you accidentally keep your handbrake up. Then you lose time because you gotta set everything back. I used to do that as a novice when autocrossing my crx. Once in a blue moon I would make that mistake, and it would cost me. Til I learned throttle control.

Actually, you wanna stiffen the rear with a sway bar or stiffin up your rear shocks, and let the front loose. Some people will take the front sway bar off. I will be downgrading my front sway bar if i can find a yaris in the junk yard with the correct one I need. I tried removing the front sway bar but it wasn't working out for me. Not my style of driving.

[speed1]

Welldone.