New rear anti roll bar

[wrinx]

Thanks Jack....the state of the pound these days may just make it cheaper to sort this in the UK, especially considering shipping costs....but of course that'll change dependant upon how many join the buy

wrinx

[wrinx]

Another thought, have we decided 22 or 24mm?

Any opinions from the Lancia guys?

wrinx

[AlfaJack]

Good question. I don't want to be caught out with it. EvoDelta, I think was initially saying it could be too much. We need Jim and na's opinion really.

[AlfaJack]

I spoke to Balance Motorsport and he said that if he was to do it, he would send an original bar off to Whiteline in Australia, he said the price to probably be over ?250 for this which means the one Jim had made is better value for us to get made and shipped.

[wrinx]

Good question. I don't want to be caught out with it. EvoDelta, I think was initially saying it could be too much. We need Jim and na's opinion really.

I wonder if 22mm will be enough???

wrinx

[mindus]

From what I've read in Jim's posts, it seems he is happy with 24 mm rear ARB. But he is using a very stiff setup for the front since he is racing. IMHO it would be hard to say without testing how a car would behave with 24 mm rear ARB together with a softer front setup (e.g. for street driving), a more heavy car as compared to Jim's, etc). But I guess rear end would be more twisty

I personally prepare a car for a racing on a tarmac (including weight reduction ('plastic' side and rear windows, etc.)) therefore I would go for 24 mm (and suspension set up will be similar to Jim's).

[jimnielsen]

Just one more thing I would say about using the 24mm bar on a standard (or near standard) street car... As a standard car, the Q4 is heavy and modestly powered - in my opinion it simply does not have enough power in stock trim to make tail out oversteer an issue whatever the diameter of the bar. It does provide much stronger control over body roll than the standard rear bar. It would be good to get na's opinion as well - I think his may be a street car.

[AlfaJack]

Cheers, I have PM'd na.

[na15575]

hallo I have use the 24mm like jims (thank you Jim)
my car is for road use and I use normal absorber
the 24 is very good for the road use
the car makes a little roll site-to-site (before was very big)
but I never notice the tail to go out (i love to have the tail go out but it is the same like when i use the oem)
the tail go out only if the road is very slide and you push it (but you can control the car very easy)
the 24 mm is going to be fine for the road use but the car need and the front arb to de perfect

I don't remember well but eibach give 24mm rear and 26 mm front for the 2.5
the 22mm not ever try it
the 24mm only in the rear if you don't have the front bar is very little
the car is too heavy
i belive that 26 for the rear and 28 for the front
it will be perfect for road use

[na15575]

i verify it from eibach it use
26mm front 22mm rear and it is 2-times adjustable???
the kit is for all the 155 exept Q4
so if eibach makes this for the same and not so heavy car like Q4
i believe that
28 front and 26 rear it is good for a fast road use
Q4 is 300 kg more

if you go for a buy i would like to have one front

[AlfaJack]

Thanks na. So 24mm could be a mid way step! Sounds like it is safe for the road though

[na15575]

it is very safe for the road
the rear s-way bar by its own can't stop the roll of the body
we must put and the front to see dig difference to the roll
and we talk that the suspension is near to the oem espasially the springs

[peter holst]

where do we get one for the front?

[jimnielsen]

I am using 650lb springs in the front.. that sure cuts down on a bit of roll - If someone wants to send me a front anti roll bar I will get a quote from Pedders as to cost..

Its possible that I could use mine, but not until the summer (summer in Australia that is...)

[na15575]

i thing that the front is the same like 2.5v6
or im wrong?
i have a spare one from Q4
if anyone want
i can send it to Jim to make a copy

[peter holst]

I want one. got the one for the rear

[mindus]

front ARB in 2.5 V6 and Q4 are different.

i thing that the front is the same like 2.5v6
or im wrong?

[peter holst]

I have got one

[peter holst]

is it possible to make it adjustable?

[jimnielsen]

Peter, if you make the bar in the same form factor as the original it will be very difficult to make it adjustable because there is very little height between the standard attachment point and the bar - so the angles that you can get are too small - so the changes in leverage over the bar would not be worthwhile - in my opinion. If you want to make an adjustable one I would simply use "off the shelf" blades and straight hollow tube.

[peter holst]

where do I get the blades?

[peter holst]

Peter, if you make the bar in the same form factor as the original it will be very difficult to make it adjustable because there is very little height between the standard attachment point and the bar - so the angles that you can get are too small - so the changes in leverage over the bar would not be worthwhile - in my opinion. If you want to make an adjustable one I would simply use "off the shelf" blades and straight hollow tube.

Hi Jim!

are you sure they can make one as the original - many bends?

If yes I will like to send an original rollbar down under

[na15575]

hi jim
have you or someone else send the front antiroll bar of the Q4 to pedders for sample or you made one?
im asking you because i m in touch with them for the front anti roll
and im going to send them a spare one that i have for sample.
i want you opinion if you can please ....
what diameter are you suggest?
im thing of 30mm

[#84]

Hi all,

It is a lot of guesses around chassi settings, including my own 23/22 mm ARB, yellow Konis and Eibach springs . Have anyone made any calculations of the chassis setup? What facts did D2 base their spring/damper kit on? Did they take the anti roll bars in account? What was their conclusion?

I haven't been in the vehicle dynamics buisness for many years, but if you are willing to help with measurements I can look at it and ask some experts. I have my car lifted up in the garage, so I can off course check some parameters myself. I have however no data on springs and dampers and would need help with angles with the car on the ground.

So, anyone interested in doing analysis on the chassis settings?

/A

[peter holst]

I would like one for the front too