UK & Ireland S2000 Community Discussions related to the S2000, its ownership and enthusiasm for it in the UK and Ireland. Including FAQs, and technical questions.

Coilover preload setting / bonus geo commentary

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Old May 2, 2014 | 09:15 AM
  #31  
chrispayze's Avatar
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Originally Posted by markforrester99
Originally Posted by chrispayze' timestamp='1399033864' post='23140609
I have 10mins toe each side with 2deg10mins camber. That's with 10kg/mm coilovers and Hardrace toe arms. Feels lots more predictable than without, and not twitchy, especially with a stiffer ARB, which I've added since. Now going to balance up with a rear ARB and possibly 8kg/mm springs.
I would avoid touching the rear bar. You would be surprised just how much of a handful it can make the car. I had a Eibach Rear adjustable ARB and even of the softest setting it was too stiff.
I've already replaced the front (with a MY02 bar) and it's too understeery on lower speed corners (although roll support is great). I've deliberately gone for a CR rear bar, so only a subtle increase to match the front, nothing like the massively stiff aftermarket ones, which I can imagine being a bit too big a step change. It's not even as stiff as a MY00. I've done lots of research and maths too, including percentage contribution of springs and ARBs to the overall spring rates, taking motion ratio into account - I have a spreadsheet!

So I'm fairly confident it'll work out well. It is something to be wary of though, too stiff a pole at the rear and all manner of wayward things can happen....
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Old May 2, 2014 | 10:14 AM
  #32  
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I know myself personally i want something that tends to understeer rather than require alot of skill to keep it in a straight line. Too much twitching can make things fun but also upset confidence. Im no driving god and i like the fact that the car is quite forgiving.

I know with my current set up that i want to reduce understeer i just need to tighten the rear dampers up abit and i can get the car to turn in abit more.

Chris the CR bar is a good option, i should of done abit more homework with the Eibach. With it fitted it upset the balance for me completely. I know alot of the yanks opt for huge front anti roll bars and disconnect the rear. I guess its completely down to driving styles. I ended up polybushing my rear 06 bar and thats been great so far.

Oh and the Eibach rear bar felt great on the road but it was on track that i couldn't stand it, goes to show what works on the road doesn't always feel good on the track.
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Old May 2, 2014 | 11:27 AM
  #33  
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Originally Posted by chrispayze
it's too understeery on lower speed corners
They do that - understeer on the way in, oversteer on the way out. I don't think there's a way around it. You'll just have more oversteer on the way out if you eliminate the understeer on the way in. I've got Cusco ARBs BTW.

I've just put new tyres on (like for like - 16" R888, 205 front 245 rear) and on the old worn tyres the handling was almost completely neutral - very mild oversteer. On the new tyres I have much more oversteer all the time - which goes to show the state of the tyres has quite an effect. Worth bearing in mind if you're tweaking suspension settings.
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Old May 2, 2014 | 11:34 AM
  #34  
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Yeh, hence I trail brake on the way into slow corners, but the front ARB upgrade has made it too understeery, and getting the weight transfer to decrease it is now more difficult due to the added stiffness, hence I'm balancing it back out again. There's no oversteer on the way out currently (tends to be neutral or a little 'push', unless I'm really on the limit through the corner). I'm changing things a little at a time and not by too much, edging toward what I (think) I want.

Anyway, Back on topic...
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