neg camber - pros?? cons??

[LeeRoy]

Yeh you should prob get under the car and give everything a good look at. You should be able to find any problems by jacking the car up and moving the wheel with your hands. ie left to right, turning in and out, and pulling the bottom and the top.

- LeeRoy

[lilcrash]

my car jumps all over the toad to say the least, from what i understand it has been lowered too far, so far that my bottom suspension arms are --- or closer to -_- lines represent left - xmember - right in that order.

i get alot of bumpsteer and the car doesnt stay straight if the road is rough.

[RObErT_RaTh]

I'm running ~1.5 degrees neg camber on the front of my ma61 supra and turn in and corning is much better and I haven't absolutely chewed through the tyres and it's also my daily.

[TurboRA28]

I run 3 deg, would like more. I find without that amount of camber my outside edge of the tyre wears.. guess spend more time going around corners than in a straight line haha.

A bit of toe in will help even the wear out.

Rca's added around .5+ camber on my ra28.

[TA-022]

following ruts and bumpsteer isues is tyre width.


I havd 7" -10 ofset adn would jump everywhere! Put stockers on .. handled like a sportscar
in comparison.

[MR04AG]

^^^^ I found when I had my +5 offset 6.5s on my KE70 it had a lot of bump steer too, cos the track is widened by a fair bit the forces on your suspension are amplified cos the geometrys all stuffed up... or something, haha.

I also ran an amount of camber on that vehicle (about 4 degrees) and found i still wore the outside of my tyres

[lilcrash]

yer ive got one bald fron tyre at the moment actually from it, im guessing my wheels are anlged all wrong, ive ordered a set of rca from t3. the tyres on the front are actually a few sizes smaller then stock but about an inch wider, could be a problem also, im getting new tyres asap to see what happens with the rcas, new tyres and a wheel allignment

[RobertoX]

IMO rcas are good but the neg camber ones aren't because they increase your scrub radius. You might actually get worse tyre wear if you use them + the effects of the negatice camber

[lilcrash]

the rcas im getting/all rcas will change your camber. they alter your anlge by making the bottom of the suspension longer

[styler]

hey lilcrash you will find its only the neg camber rca's that will give you negative camber, hence the name. they have an offset mounting which extends the length of the lower control arm giving more track and neg camber. they have about 20 - 30 mm offset depending on brand, and 10mm can equal around 1 deg of neg camber. t3 ncrca's are 25mm.

normal roll centre adjusters are just a spacer block to return the lower control arm downwards after a car is lowered, bringing the arm closer to its original position which is meant to return the roll centre of the car closer to its original postion. they may have the slightest effect on camber but its really negligible.

[TurboRA28]

yeah the neg camber ones are a bit of a worry.. all the forces of the suspension are now hanging off the edge of the balljoint also.

im suprised people are saying that the normal rca camber chamber change is negligible. I found between half a degree to 1 degree change which I consider massive.

[styler]

hey i have only found about 1/4 deg so far but it probably differs between each custom suspension setup and car. yeah 1/2 to 1 deg is a lot!

[oldcorollas]

typical number is.. 10mm at top or bottom of strut = 1 deg camber change.

increased scrub radius and bumpsteer are the problem it sounds.
why not raise the car up to a sensible level?
no point having it look fooly sik if it handles like shit = dangerous...

the amount of castor and camber for each car is different...
funy, i thought stock +ve camber died out when they got rid of cross-ply tyres (ie, after KE10)
some cars have slightly pos when unloaded, but when you get in, give slight neg camber.
loaded angle is more important

edit: it is easy to see what happens to camber change with suspension movement (in a simple manner)
take the length of the lower arm, then tie string around a pencil and cut to the lower arm length.. then trace out a circle, and measure the lateral movement of the arc with vertical movement.. 10mm is aprox 1deg...

[RobertoX]

the rcas im getting/all rcas will change your camber. they alter your anlge by making the bottom of the suspension longer

They don't increase the effective length of your lower control arm they increase the distance of the hub face from the steering axis. Normal rcas will decrease your camber like TurboRA28 has said.

Oh and I've found that +1 degree change is enough to change the tyre wear from the inside edge to the outside.