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(Post Link) post #1 of 17 Old 11-03-13 Thread Starter
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Adjustable Wishbone

Has anyone found or modified adjustable wishbones like the ones pictured bellow?

Last edited by Dubai GT; 17-03-14 at 06:38.
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adjustable, no...

adjusted for 1ー less negative camber, yes...
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i have these fitted to my car, they reduce camber by 1 degree
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eccentric bushes, i like it! how much did u drill the holes off center?

do they make a lot of difference?
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I did not produce these, a fellow dutch forumer did.
they are not adjustible, they have a fixed camber reduction of 1 degree to reduce tire wear on lowered cars.
as you can see on the right picture they are not just drilled of center, they change the complete angle of the upper wishbne
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Within a week or two i'll start making entire new front suspension for my trackday 156's including front subframe, and 4 A-shaped wishbones.
156's suspension maybe is great for road use, but is awful for trackday.
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(Post Link) post #7 of 17 Old 12-03-13 Thread Starter
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Quote:
Originally Posted by Allerd View Post
I did not produce these, a fellow dutch forumer did.
they are not adjustible, they have a fixed camber reduction of 1 degree to reduce tire wear on lowered cars.
as you can see on the right picture they are not just drilled of center, they change the complete angle of the upper wishbne
I understand this is a option, ( just reverse it to increas camber) on your system its seems that the LH wishbone bushes are angled and off set whilst the RH is just off set. ( two different settings)

If I am reading this correct then the LH wishbone will reduce castor which is not we want, we want to increase it.

Does it make sence what I am saying?
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Yes because the uppers are set back this will also affect the castor slightly. I believe a japanese tuning firm make adjustable lower arms. It could be someone like Unicourse as they do a lot of race stuff.
http://www.unicorse.co.jp
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Quote:
Originally Posted by Speedmaster View Post
Within a week or two i'll start making entire new front suspension for my trackday 156's including front subframe, and 4 A-shaped wishbones.
156's suspension maybe is great for road use, but is awful for trackday.
I would like to know more about this - I thought the 156 is nice, just not adjustable. I have 2.5 deg neg camber on my racer just by putting coil-overs in and dropping them.

Quote:
Originally Posted by Dubai GT View Post
I understand this is a option, ( just reverse it to increas camber) on your system its seems that the LH wishbone bushes are angled and off set whilst the RH is just off set. ( two different settings)

If I am reading this correct then the LH wishbone will reduce castor which is not we want, we want to increase it.

Does it make sence what I am saying?
If you want quicker reaction to turn in, less castor is needed, like a scrambler bike (upright rake) vs a harley chopper.

More neg camber is usually needed - I have 2.5 deg dialed in and the inside edge of the tire runs hotter than the outside edge, so I should either let my tires run a bit softer of decrease my camber to about neg 2.0 deg.
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Quote:
Originally Posted by Dubai GT View Post
I understand this is a option, ( just reverse it to increas camber) on your system its seems that the LH wishbone bushes are angled and off set whilst the RH is just off set. ( two different settings)

If I am reading this correct then the LH wishbone will reduce castor which is not we want, we want to increase it.

Does it make sence what I am saying?
No both are the same.
left one on the picture is modified , right one is original , just to make clear what is does.
They could be used to increase camber, but the upright would probably collide with the shockabsorber.

and yes , caster is also modified by about 25 minuts positive.

Last edited by Allerd; 12-03-13 at 19:46.
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who manufactured them? id really like to know how he machined them
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check for toon or bullethoot on alfaforum.nl or alfaromeo156club.nl/forum
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Quote:
Originally Posted by Gertie View Post
I would like to know more about this - I thought the 156 is nice, just not adjustable. I have 2.5 deg neg camber on my racer just by putting coil-overs in and dropping them.
Camber isnt everything when maximum grip needed......when you lower the car your toe in-out settings changes as well, because steering arm links are still fixed to the rack......and when car lowers front tires goes to toe-out - and it's sometimes useful sometimes not.....IMO every time when car is lowered, tracking must be done.......
If you have access to a car jack, you may note how your front tires toes in or out when you lift both front wheels from the ground.......
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Quote:
Originally Posted by krisrt View Post

Japanese.
And there are no wishbones on that page.
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Quote:
Originally Posted by Allerd View Post
No both are the same.
left one on the picture is modified , right one is original , just to make clear what is does.
They could be used to increase camber, but the upright would probably collide with the shockabsorber.

and yes , caster is also modified by about 25 minuts positive.
The upright / shock colliding will be a problem if you try to gain too much neg camber that way - the bottom control arm must then be pushed as well to make space.

Quote:
Originally Posted by Speedmaster View Post
Camber isnt everything when maximum grip needed......when you lower the car your toe in-out settings changes as well, because steering arm links are still fixed to the rack......and when car lowers front tires goes to toe-out - and it's sometimes useful sometimes not.....IMO every time when car is lowered, tracking must be done.......
If you have access to a car jack, you may note how your front tires toes in or out when you lift both front wheels from the ground.......
Definitely check alignment - I adjusted my alignment after - front 1 minute toe in and rear 11 minutes toe out.
My rear control arms are replaced by adjustable ones so you can set the camber and toe at the back.
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i have front 6 out, rear 11 out aswel.
Because of the redution in camber, you can ad a little toe out in front , makes it handle very wel!
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