New anti roll bar upgrades???

[stevieyid]

Hi Liam, glad to see you made the thread. Ill bring the bars over tomorrow for you to look at.

[Rusty]

Last time I got a quote for the FARB option on the rear it was just over £100 for the bar, bushes and cups. Bearing in mind that it is not bolt on I think that the rear price sounds about right. For the front bar, something nearer the £150 mark world be nice as we can get the RS2 FARB for about £200 anyway...

[Error404]

I've got a front and rear subframe in the garage i'll get as many pics as you want / need later

Let me know what you want to see and i'll snap away

Heres one of the front subframe, ARB and wishbones prior to assembly



HTH

[S2central.net]

I like this thread

When it comes to trial and error on any ARBs that come out of the development process - what kind of objective tests (by which I mean those without subjective results like 'feels better') can be done to actually measure the difference made to the chassis roll behaviour ?

[stiglet]

I like this thread

When it comes to trial and error on any ARBs that come out of the development process - what kind of objective tests (by which I mean those without subjective results like 'feels better') can be done to actually measure the difference made to the chassis roll behaviour ?

Corner entry speed:mischeif:

[S2central.net]

Measured before or after hurtling into the armco ?

[stiglet]

Seriously though, if it's the balance of the chassis you're trying to alter the best way IMHO is just to drive it and see. I never was convinced of measuring handling by numbers

Also liking this thread.

[anton]

the problem with mods like this is its difficult to destinguish between subjective and objective benefits, with roll bars you can easily go way to far yet still get a subjective benefit.
what i mean is, a bigger bar will ALWAYS reduce roll, this feels good, but it may well be loosing you overall grip as it will effectively turn your independant suspention into a solid beam (anti-geometry i believe this is called, cant remember now as its been a while since i look at the books).

there is a big mis-understanding with suspension is that stiffer is better....it is in fact the opposite, only benefit in reducing roll is the effect the movement of the suspension due to roll has on the geometry. as has been said many times before on here, it is all a balance, putting on stiff ARBs with stock springs may only make a small benefit if any, however the stiffer setup will make it feel much better.

IMHO the ONLY way ot truly now what is better and what is worse is objective testing, just as Paul has said, easiest would be finding your favorite roundabout and gradually increace the speed till you cant hold the line, lap times are good too but we all have off laps lol. IMHO subjective 'bottom' testing is useless for mods like this, same with shocks, i was SURE my car handled better with my shocks on their max setting but lap times showed a decent increace when i set them to minimum.....

Ant

[anton]

thought i should add, all of what i said depends on what you want from the car, faster isnt always more fun.....stiff feels faster, but may not neccessarily be faster, but feeling faster is more fun than being faster IMO. thats why my shocks are always set to max

Ant

[Rusty]

On the road my RARB upgrade is great, on the track it's arguable too much. With a stiffer front bar to balance it I guess it would be better on track but on the road it would be quite harsh. I put up with it because it's cheaper to leave things than it is to buy shiney new parts

I've never driven a car with a whiteline, HnRs, upgraded bushes etc. so I can't comment on the combined effects until I get these parts fitted.

Interesting that mine on a stock chassis isn't overly sharp on the road (bar the quick steering) but on track it really comes alive under load. I believed the road testers of the time re: understeer etc. until I went on track and then it actually made sense, great fun is there to be had if you've got the balls to throw your pride and joy about like a hot hatch delicate inputs are for Carterhams and Lotuses

[stiglet]

On the road my RARB upgrade is great, on the track it's arguable too much. With a stiffer front bar to balance it I guess it would be better on track but on the road it would be quite harsh. I put up with it because it's cheaper to leave things than it is to buy shiney new parts

I've never driven a car with a whiteline, HnRs, upgraded bushes etc. so I can't comment on the combined effects until I get these parts fitted.

Interesting that mine on a stock chassis isn't overly sharp on the road (bar the quick steering) but on track it really comes alive under load. I believed the road testers of the time re: understeer etc. until I went on track and then it actually made sense, great fun is there to be had if you've got the balls to throw your pride and joy about like a hot hatch delicate inputs are for Carterhams and Lotuses

Agree 100% Andy. The Coupe's are so chuckable it's almost funny. I reckon my balljoint extenders will probably ruin that but oh well.

Have to say that one of the best upgrades i've done so far was the Whiteline, but anything other than minimum seting is WAY too much for the track! Might be worth bearing this in mind when these custom bars are made...

[Rusty]

You just have to accept that the back end is like a yo-yo and make sure that you put it into corners accordingly, i.e. with a little throttle. Must be the suspension geometry going doolally (sp.) when it all gets loaded up. It is, as you say, hilarious Stock rideheight and some 650lb springs should go some way towards sorting that out

[stevieyid]

the amount of good reports the rs2 bar and the whiteline bar have surely if ESP can make a bar with the same effects and possibly cheaper that can only be a good thing. I get lost in all science of the affects

[Rusty]

I'll be watching the FARB progress...

[stevieyid]

Just got back ESP after dropping off the anti roll bars that were greatfully donated by newsh. So hopefully in a few weeks time we can have an update on this. Unfortunately there is no way of measuring the torsional difference so it will have to be trial and error.