Front Uprights

[nnrouty]

Originally Posted by twinturbo

Why though? You can sell them for more than the cost of the items you need.

If your a design engineer then build your own uprights for a challenge

TT

Just on the subject of redesigning uprights..... you guys mights be intrested to know that i've designed my own rear upright which use the same wish bones and sierra parts. Waiting for them to be tested then will mabe make a few pairs if anyone is interested?

Also hope to develop the rear upright so that the hub carrier/bearings are part of the uprights.

[mr henderson]

Originally Posted by nnrouty

Just not very clued up on suspension goenometry.

And I made the comment because you've received advice that the consensus of which is that it is better to use Sierra uprights, and yet you seem happy to go ahead with the Cortina units, I formed the impression that you felt your engineering background trumped that advice, if I was mistaken, I apologise.

[nnrouty]

Sorry not trying to cause arguments. I'm always willing to lean new things

[nnrouty]

Hi all

Last night i spent a few hours on AutoCAD and have finalised that you can use the cortina front upright providing you extend the upper front wishbones by 54mm and remove the 8'degree angle for the camber adjuster.

I have DWG drawings available that show zero bump steer using this setup.

No other changes needed.

[twinturbo]

So the steering arm is located in exactly the same place in relation to the lower pivot?

TT

[nnrouty]

The relation between the track rod end and the maxi ball joint is not the same as the relation between the joint in the steering rack and the wishbone mount. But after drawing the suspension with the sock closed and partly closed there are no changes in distance from the track rod ends to the chassis.

[nnrouty]

Attached pdf

[davidimurray]

What affect does the wishbone lenght change and geometry change have on the roll centre?

[nnrouty]

See attached

[davidimurray]

Thanks for that drawing - any idea how it compares with the sierra based setup?