Just been looking into making my own camber kit for the cav IRS rear suspension.
Iíve been looking at the suspension geometry of the suspension. (see Haynes manual pic)
As the spring / damper shortens. The wheel / axle move as per diagram
1) Up / Down Motion No Camber Change
Move pivot point back towards that of diagram 1) and Camber change progressively reduces. The cavalier has an included Angle A. Ratio of about 6:1 when comparing the extremes of design layout
The GSi Rear Suspension will therefore increase negative camber as the rear shortens.
To Correct this error the two suspension bushes need to move in the same direction by the same amount to re-establish the original suspension geometry. The Alternative is to introduce rotation about the centre of these bushes so that the inboard bush moves upwards (like the spring), but the outer bush moves downwards towards the road. This rotation translates as a change of camber to become less negative. The Rotation can be simplified by maintaining the inboard bush relocated at a lower level.
A drop of only 20mm will provide correction of 1 degree to the camber angle.
This is what I'm thinking of making.
A - Where the original bush would be... with a block inside to fill the hole.
B - where the bush is now situated. Within reason it could be adjusted to where ever you want the hole !
This is what will be used to move the outer bush down towards the road, therefore making the camber change back.
In theory this should work. I'm not sure I've explained it every well. Anyone, have any theory's or pictures on the camber correction kits you can buy. or the calibra DTM bushes ????
If this works, then I can produce cheap kits that work ! and so people don't have to spend out £200 + on Camber kits or £80+ on difficult to get DTM bushes !