8 replies to this topic

[cian]

How exactly are the oriented in the arm i cant make any sense of the instructions lol oh and what is the purpose of the offset?

[Cerberus]

I thought the instructions were pretty clear. Can't remember if its the thin raised line or the dots that you align, but basically, one points one way, the other points another way. The bolt will only go in if the two halves are aligned correctly, just make sure they're not 180 degrees out.

The point of the offset is to stop the bush from wearing wrongly IIRC when the geometry is changed.

[tiger99]

Surely the point of the offset is to be able to cheaply make a small change to the camber? It has nothing to do with wear, and a standard bush can be expected to last longer, as it has the maximum possible rubber thickness all round, so is less stressed as it flexes in torsional shear to allow arm movement.

It would be normal to set them with the bolt hole towards the inner end of the arm, to get maximum negative camber.

[cian]

Thanks cerberus thats what i kinda got from the instructions, the sleeves are in line but it seems as if the arm will be at an angle when installed is this correct?

[Cerberus]

Surely the point of the offset is to be able to cheaply make a small change to the camber? It has nothing to do with wear, and a standard bush can be expected to last longer, as it has the maximum possible rubber thickness all round, so is less stressed as it flexes in torsional shear to allow arm movement.

It would be normal to set them with the bolt hole towards the inner end of the arm, to get maximum negative camber.

Ahem

The bolt hole isn't moved equally within both halves of the bush, it's angles the bolt, it's actually to compensate for adjusted castor angles.

[tiger99]

That is only partly correct. By changing the camber, there will be a SLIGHT change in castor, and if you adjust that to normal by using adjustable tie rods, or even shimming the front bushes, the camber bush axis will once again be aligned correctly.

[racingbob]

i just bought some there for cars that have more camber and castor on them ( if its the same you have ) about £12

must allow for the twist in the bush

i just alighned the - down the arm toward the wheel like it said, i then took it in for a wheel alighnment

as my original bushes were torn from being twisted id say

all seems ok drives good

[Cerberus]

That is only partly correct. By changing the camber, there will be a SLIGHT change in castor, and if you adjust that to normal by using adjustable tie rods, or even shimming the front bushes, the camber bush axis will once again be aligned correctly.

I was just going from what it says on Minispares page, , now you've got me thinking about mine, as I've got adjustable tie rods too. I really should get it all setup properly, although I think I've got it pretty much spot on as it is.

Meh, they should be as good as the standard rubber bush, I'm sure they're fine,

[tiger99]

Well, if they are still good after 60k miles (typical for standard bushes), we will know that they really are good. But looking at it the other way, if they come near to the minimum of my estimate and you get only 10k miles, they are still a fairly inexpensive way of achieving a small amount of camber adjustment, and they are not difficult to change. Just remember to check them at every service, and you will not go wrong.