Rear camber issues

[bentovey]

Thanks Mick. I think what I’m planning , before I start chopping off mounting points is make a longer set of adjusters (maybe 100mm of thread) and see how that goes. Then if that doesn’t work I’ll adopt your idea and move the mountings

[twinturbo]

that's going to change the swing geometry though... Not sure what effect it will have.

[bentovey]

Originally Posted by twinturbo

that's going to change the swing geometry though... Not sure what effect it will have.

Which? Moving the brackets or lengthening the adjusters

[bentovey]

I thought the geometry would be set by the lower wishbones as they have no adjustment. It’s the top wishbone adjusters that will be lengthened

[twinturbo]

It's more complex, get some card and paper fasteners and you will see.

If both arms are the same length then the the movement of the hub will stay paralel. and the camber of the wheel will not change relative to the chassis.

But if one arm is shorter than the other you will begin to create an ARC, it may be minor and of no consequence. but the wheel camber will alter as the suspension is loaded. This is not necessarily undesirable, and may be part of the original haynes suspension design.

[bentovey]

That makes a lot of sense I’ll measure both the upper and lower wishbones

[Numplumb]

My rear upper wishbones are a lot shorter than the lower ones.
MX5 rear upper wishbones are a lot shorter than the lower ones.
As far as I know unequal length wishbones are the preferred arrangement.
IMO making longer adjusters or moving the anchor points won't alter the geometry enough to be a problem, there isn't very much movement in the rear suspension anyway, and if you set it at 1% negative at the ride height it probably will only go to 0% when cornering.

Regards Mick.