Is the rear anti-roll bar from the A4 a milder bar than the S4 bar? Will it mount right on the S4?

FixedWing · 01-23-2006, 11:40 AM

I swapped to the A4 front anti-roll bar. I am still thinking that is too much. So now I'm considering running with no front anti-roll bar and just the A4 anti-roll bar in back in the snow & ice.

Trouble is, with the car off the road and not enough of the right weather, I don't have the opportunity to experiment and am left guessing.

Anyway, I figure I will go for the Citroen 2CV look. :-p

Stephen

~~ModifiedA4~~ · 01-23-2006, 11:45 AM

it might be a nice compromise.

FixedWing · 01-23-2006, 11:49 AM

Or maybe no rear bar at all.

Otherwise the body roll will end up picking up a rear wheel which is not good.

I would think on ice there isn't going to be enough traction to make enough body roll to worry about.

Stephen

FixedWing · 01-23-2006, 12:33 PM

At least for the moment, I do not have the problem of aftermarket drop-links. So I should be able to just bolt it right in.

So next question ... how do you think it will handle? I will be running just this bar without any front bar. But I will also be driving in conditions with limited traction (ice & snow). So I don't think that there will be much body roll anyway.

What I want is to be able to get the car nicely balanced under these conditions so that I can get it to turn in nicely without getting so much oversteer that it is uncontrollable on the exit.

What do you think?

Stephen

FixedWing · 01-23-2006, 12:52 PM

So now to find a bar and just go out and try it. :-)

I do think that the levels of grip make a big difference in this though. You are talking some pretty high grip in your situation. I would be surprised if I will see cornering loads above 0.3G on the ice even with good studded tyres. In those conditions, I just don't think body roll is going to be much of a factor.

I've already gone down from 700/800 springs to 450/500 springs and I think that's as low as I can go without revalving the dampers. I'm thinking that I will be able to to turn the dampers up for normal street use and then turn them way down for on the ice.

Thanx for the input. :-)

Stephen

iS4aclu · 01-23-2006, 08:05 PM

FixedWing · 01-24-2006, 05:14 AM

FixedWing · 01-24-2006, 06:43 AM

If there is a sport A4 front bar (which I assume I have) and a non-sport front bar then another alternative would be to use the non-sport bar on the front. That would reduce the front anti-roll bar effectiveness further without my having to go so far as to remove it completely.

Stephen

FixedWing · 01-24-2006, 07:20 AM

01-23-2006, 11:40 AM	#1
FixedWing Senior Member Account #: 66531 Join Date: Dec 2003 Posts: 7,155	Is the rear anti-roll bar from the A4 a milder bar than the S4 bar? Will it mount right on the S4? I swapped to the A4 front anti-roll bar. I am still thinking that is too much. So now I'm considering running with no front anti-roll bar and just the A4 anti-roll bar in back in the snow & ice. Trouble is, with the car off the road and not enough of the right weather, I don't have the opportunity to experiment and am left guessing. Anyway, I figure I will go for the Citroen 2CV look. :-p Stephen __________________ ================================================== ======================

01-23-2006, 11:45 AM	#2
~~ModifiedA4~~ Banned Account #: 143 Join Date: Mar 2000 Posts: 34,564	you should find out how the sport package A4 bar compares to the s4 bar. it might be a nice compromise.

01-23-2006, 11:49 AM	#3
FixedWing Senior Member Account #: 66531 Join Date: Dec 2003 Posts: 7,155	I think if I have no front bar then I need the mildest rear bar I can find ... Or maybe no rear bar at all. Otherwise the body roll will end up picking up a rear wheel which is not good. I would think on ice there isn't going to be enough traction to make enough body roll to worry about. Stephen __________________ ================================================== ======================

01-23-2006, 12:33 PM	#4
FixedWing Senior Member Account #: 66531 Join Date: Dec 2003 Posts: 7,155	Exactly the info I needed! :-) At least for the moment, I do not have the problem of aftermarket drop-links. So I should be able to just bolt it right in. So next question ... how do you think it will handle? I will be running just this bar without any front bar. But I will also be driving in conditions with limited traction (ice & snow). So I don't think that there will be much body roll anyway. What I want is to be able to get the car nicely balanced under these conditions so that I can get it to turn in nicely without getting so much oversteer that it is uncontrollable on the exit. What do you think? Stephen __________________ ================================================== ======================

01-23-2006, 12:52 PM	#5
FixedWing Senior Member Account #: 66531 Join Date: Dec 2003 Posts: 7,155	Yeah, I think that's about as close as I'm going to get to a definitive answer... So now to find a bar and just go out and try it. :-) I do think that the levels of grip make a big difference in this though. You are talking some pretty high grip in your situation. I would be surprised if I will see cornering loads above 0.3G on the ice even with good studded tyres. In those conditions, I just don't think body roll is going to be much of a factor. I've already gone down from 700/800 springs to 450/500 springs and I think that's as low as I can go without revalving the dampers. I'm thinking that I will be able to to turn the dampers up for normal street use and then turn them way down for on the ice. Thanx for the input. :-) Stephen __________________ ================================================== ======================

01-23-2006, 08:05 PM	#6
iS4aclu New Member Account #: 81547 Join Date: Sep 2004 Posts: 66	They are the same. Front and rear.

01-24-2006, 05:14 AM	#7
FixedWing Senior Member Account #: 66531 Join Date: Dec 2003 Posts: 7,155	You mean that the A4 sport package is identical to the S4 front & rear anti-roll bars? __________________ ================================================== ======================

01-24-2006, 06:43 AM	#8
FixedWing Senior Member Account #: 66531 Join Date: Dec 2003 Posts: 7,155	Yes, I have an A4 bar. Are there two different front A4 bars? If there is a sport A4 front bar (which I assume I have) and a non-sport front bar then another alternative would be to use the non-sport bar on the front. That would reduce the front anti-roll bar effectiveness further without my having to go so far as to remove it completely. Stephen __________________ ================================================== ======================

01-24-2006, 07:20 AM	#9
FixedWing Senior Member Account #: 66531 Join Date: Dec 2003 Posts: 7,155	Ok, that makes sense. So I guess I already have the non-sport front anti-roll bar. Thanx. :-) __________________ ================================================== ======================

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