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Old 21-06-2012, 05:21 PM   #1
Funkster
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Default Not CSL But sudgestions requested.

Hi guys, Just wondering what suspension settings you guys would sudgest for our E36 race car......

We got on pretty well in our first years racing last year but it was mainly learning how to drive in a race situation and drive our car but this year we are trying to get a lot more in tune with the setup.

After a disastrous wet race last year I done loads of research on wet setup and it came good a few weeks back when we won our class at Donny.

What we are after now is the best possible dry setup we can manage..... It's a 328i Coupe with full cage, Cheapish BC racing inverted coilovers and non adjustable anti roll bars but front and rear camber is.

We run the car about 1300kg.

The only thing the car seems to lack is initial front end bite on turn in...... The back end is absolutley planted and never an issue, which I think is the reason behind the lack of front.

There is no push or understeer when you get on the throttle or mid way cornering but just on initial turn in.

We currentley run -3.75 front and -1.5 rear on Federal FZ201 Semi Slick race tyres.
We have the front with a total of 3mm toe out and the rear with 2mm toe in.

We did run the car before with a lot more front toe out which did help the turn in greatly but the straightline stability and breaking was shite and it locked up far too easily, Although I was quicker with this setup I have since been informed that it's not a good idea to run too much toe out anyway because of tyre wear and speed loss etc.

We are on a dry (hopefully) track day at Snetterton on monday where we are going to try out various settings before our race next weekend.

Our initial thing to try will be to stiffen up the rear and then maybe soften up the front. All tyres seem to have good temperature across the widths and we are also getting pretty good even wear.

Some of you guys seem to know your stuff so any sudgestions are greatly welcomed.

Cheers Matty ( MAD Motorsport )

Last edited by Funkster; 21-06-2012 at 05:37 PM.
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Old 22-06-2012, 10:47 AM   #2
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44 Views and no comments means two things!

That we all pretend to know about car setup but havent got a clue (or do not want to pass on our best setup for dry) or we all know that as its you Funkster its going to rain so your better off keeping with wet setup.
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Old 22-06-2012, 11:58 AM   #3
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Billy, I'm all for a wet race TBH but need Snett dry on Monday Please Please Please !!!!!

We think we are heading in the right direction with getting the old tub right but we are always open to any advice or hint's.

Ive been reading and reading but it can get so complicated with static camber, Dynamic camber, Slip angles etc......

We are just out to have some fun but want to get the best out of what we have......

I've got some ideas to work with so looking forward to trying them out !!
on Monday in the Glorious Norfolk Sunshine

Matty.
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Old 22-06-2012, 12:40 PM   #4
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Are you running staggered wheel/Tyres?
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Old 22-06-2012, 12:43 PM   #5
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You could add a little more rake?
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Old 22-06-2012, 01:19 PM   #6
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matty

as you are on road tyres imho getting grip levels right is critical

not easy to give you an answer as the combination of damper build/adjustment, spring rates, geo settings, tyre make and condition, and then the variable conditions make it very complicated.

if it were me and listening to your comment i would in this order:

1. make sure tyres are fresh and soft
2. assuming dampers and springs fixed set car more soft to front and hard to rear on dampers until you get more grip on turn in whilst maintaining high speed stability and kerb runing at rear
3. get proper pyro info/advice to set up the cars geo, getting temps and adjusting pressures wheel by wheel is invaluable as it takes guess work out. on CSL on cups we showed front camber at -2.75 was perfect and rear at -2.0 was not quite enough to get even temps across the tyre even by dropping pressures more than maybe would be recommeded

At Snett for simple improvements i would concentrate for lap times only 4 key corners

Riches, Williams, Bomb Hole and Murrays. if you can set up and drive these corners you will gain heaps of time and maybe open up more overtaking chances at the end of the straights
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Old 22-06-2012, 01:08 PM   #7
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Quote:
Originally Posted by lawsy View Post
Are you running staggered wheel/Tyres?
No we are running a square setup on 17's shane !

We do run 10mm spacers front and back in the wet but it's only coz our wet wheels don't clear the AP's.

Nathan,
We have the front slammed as low as possible, any more and we are scrubbing tyres on turn in. I suppose raising the back slightly could loosen the rear and possibly help the front.

Matty.
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Old 22-06-2012, 01:57 PM   #8
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Quote:
Originally Posted by Funkster View Post
No we are running a square setup on 17's shane !

We do run 10mm spacers front and back in the wet but it's only coz our wet wheels don't clear the AP's.

Nathan,
We have the front slammed as low as possible, any more and we are scrubbing tyres on turn in. I suppose raising the back slightly could loosen the rear and possibly help the front.

Matty.
The BC are not the greatest, and being slammed will probably have the front too low, bottoming out causing it to skip on initial turn in.

Try raising the front. And soften too.

Last edited by shane@mbtech; 22-06-2012 at 02:37 PM.
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