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donor wishbones
stuleah - 20/3/08 at 09:30 PM

has anybody ever used the wishbones from there donor car and if so how were they mounted?

speedyxjs - 21/3/08 at 07:26 AM

I am using the ones from my jag. Just make up brackes for the bone size

turbodisplay - 21/3/08 at 10:32 AM

Normally they are of sub standard quality being pressed steel, compliant rubber etc.
On a seven the bushes may be ok due to the lower weight of the car.
At best they are heavy.
The ford sierra versions tend to use the anti roll bar as a locator for the wishbone as the wishbone only has one bush. Not exactly conducive to great handling

Darren

jlparsons - 21/3/08 at 02:48 PM

Some of the older cheap 7 clones used sierra/cortina front sus almost entirely, i forget which bits exactly but looked heavy as hell.

stuleah - 21/3/08 at 04:37 PM

i think i will make my own, after looking at the originals i think it will be easier to make the wishbones and brackets to suit rather than try and yuse the originals plus like youve said they should be lighter.

David Jenkins - 21/3/08 at 04:39 PM

Making your own gives you an opportunity to get the top bones the correct shape, so you automatically get self-centering. The book design doesn't help at all.

Basically, it pushes the top ball joint further back so it's about 21 or 22 mm behind the lower one (can't remember the exact figure! )

[Edited on 21/3/08 by David Jenkins]

stuleah - 21/3/08 at 10:09 PM

the way i am making the rears doesnt have a top wishbone as it will be the same setup as a std car ie mondeo.
i know what you mean though as i have been looking into it for the fronts.
thanks for the info.

aerosam - 23/3/08 at 01:26 PM

I'm going to be using my BMW IRS setup on the back using the original trailing arms/wishbone (same thing really) setup. It isn't much heavier and certainly easier than a double wishbone setup and looks a whole lot lighter than dedion.

Front is going to be double wishbone though, not sure if I can use my BMW hubs or not yet though.

britishtrident - 23/3/08 at 04:24 PM

quote:
Originally posted by aerosam
I'm going to be using my BMW IRS setup on the back using the original trailing arms/wishbone (same thing really) setup. It isn't much heavier and certainly easier than a double wishbone setup and looks a whole lot lighter than dedion.

Front is going to be double wishbone though, not sure if I can use my BMW hubs or not yet though.


Another name for that type of suspension is the diagonal swing axle also used on the Sierra and ancient Triumphs ---- BMW stopped using it except on the poverty models because of snap over steer in wet conditions.

Really not a good idea to use it, I have used that type of suspension in the past BUT it can only really be set up for one set of conditions, set it up for dry tarmac and you get snap oversteer in the wet.

stuleah - 23/3/08 at 06:32 PM

the front of mine will be double wishbone and the rear will be the same set up as the front of a mondeo, that should be ok.
shouldnt it?