hi anyone no if this setup would be ok.do you need toe in/ tow out or will it be ok stright thanks adam

sorry ment camber or is it only on the front wheels and the backs run stright
thanks



[Edited on 7/4/07 by oadamo]

Thats pretty much how a sierra rear axle works, although the pivot points start near the middle of the car as the loading to stop the hub twisting is pretty horrible.

So yes it will work, is it appropriate No. there is a reason why we all use wishbone IRS, weight ease of manufacture and the geometery is better as the wheel aligns with the road in roll.

What you have suggested will will not unless you stagger the pivots then you get rear wheel steer as well.

Might be good in a straight drag race though, but that kind of gets away from the point of a small light nimble car.

Regards Mark

No totally wrong,

Just copy either the double wishbone set up used by MK or the de Dion used by GTS or get an old fashioned Escort or Capri or Cortina or Rootes rear axle.

that's a trailing arm setup - fairly popular at the rear of FWD cars. you'd get peed off with the rear jacking up & down under braking & as mentioned above, the camber control could be better. I've never seen it used on driven wheels but I dare say someone will be along with an example soon enough! Very easy to do an anti roll bar by linking the trailing arms.
Bob
PS semi trailing arms are much more popular for driven rear wheels e.g. ford sierra & all the BMWs. This gives some camber control atthe expense of some bump steer.

[Edited on 7/4/07 by Bob C]

As the wheels move up and down the lenght of the wishbone will be shorter.

I think it will work cause there will be less travel (i asume)

You will need some extra static negative-camber. And a "big" roll-bar to prevent roll which is needed in a normal IRS.

So it can, easy to manufacture, not ideal.

But who im I.

The sierra rear is different. It gives a "steering" effect cause the inner pivot is placed otherwise. Also the sierra axle is ment for a car of 1100 kg. so don't use that one.

We have the www.brllight.nl
It uses only the sierra wishbones at the rear, not the rest of the axle.
So it works, but i don't like it.