Technical Camber and suspension.

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Technical Camber and suspension.

Robin1600

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Has anyone got or running with adjustable top mounts? i am trying to get negative camber to make the little beast turn in faster and grip a little better on twists.

Anyone running such items? Where can i buy? Or is there any other suggestions for camber set up?

Cheers Rob
 
On the rear....the lower you go, the more neg cambre you get.

My kw coilovers on the front have elongated holes so i can adjust the cambre to my liking....i set it to max neg....which isnt ever much really.....but neg cambre does munch the inside of the tyres...well it does with my suspension on the rear
 
Has anyone got or running with adjustable top mounts? i am trying to get negative camber to make the little beast turn in faster and grip a little better on twists.

Anyone running such items? Where can i buy? Or is there any other suggestions for camber set up?

Cheers Rob

Other things to look at are offsets (wider track at the front will give better turn in, tyre widths (it's possible -- and probably legal -- to run wider tyres at the front than the back) and suspension settings: of my cars, the one with the "best" suspension (Spax adjustables) understeers a lot more than the ones with plain old dampers. I suspect that softening the front on bounce (or maybe learning how to left foot brake) will affect understeer remarkably.

Some of this stuff is deeply counter intuitive!
 
Read up on it. I designed a suspension system on a single seater racer last year and still couldn't say exactly the best way to do things, as they all work together.

Good thing to look at si "Competition Car Suspension" by Allan Staniforth
 
Understeer is exactly my problem. Overall the little beast corners well but once it starts to understeer it just keeps going! Its always been like that both on standard sporting suspension and now the lowering kit hasnt really made that much difference to the understeer although its now more controlable. Ive tried different tyres and suspension bushes, Perhaps im just trying too hard........... I thought the next step should be camber adjustment but i really am wondering if these lightweight cars have a inherant understeer issue simply by being lightweight! (yes, i know how to drive ! and yes i know its a front drive car....excuses excuses....). I have even widened the track but it has had little effect on my "roundabout madness".

It just doesnt inspire confidence. For years people have been making (old) mini cars handle but the seicento looks like it will need even more cash to get it "planted to the road"
 
this is a general rule of thumb & doesn't cover all situations but -
understeer = hard front suspension, soft rear suspension & a lot of chassis flexure
oversteer = soft front suspension, hard rear suspension & not much chassis flexure
 
Depends on the dampers/springs. My Sei on OE dampers and -20mm springs does great without the ARB but on the 60/40 gmax dampers & springs it just slides wide everywhere.
 
Yok A598 front, weird Dunlop Sports on the rear for both 185/50R14, the tyres however stayed the same for sets of springs/dampers so what they are shouldn't make diffrence.
 
a few of us wanted jordan to make an uprated front ARB, that never happened so i doubt a rear one would happen.

Just use a cage to stiffen things up abit:p
Folk who've run an uprated front bar more or less back to back with a standard one seem to think it does nowt useful (on road tyres, anyway) but an adjustable blade type for the front should be do-able. For the rear, I'll have to have a look at the arrangement on other FIATs.

Ideally, you want no noticeable understeer and not too much lift off oversteer. The car which had it right for me was the Fulvia.

As for a cage, well, my everyday cars have to carry 5 people, sometimes.
 
hi Fingers 99.

I am running "standard 165 pirellis" on the rear and Yokohamas on the front. 175-50-13. Standard 13 inch wheels. Grip is generally okay but once pushed and it lets go it seems to just slide and slide and slide with massive understeer.........dangerous understeer that the steering lock and throttle pedal input seems to have little effect on direction....in fact in the wet my hand is often found lucking near the handbrake as yet another "straight line moment" unfolds..!!!

To be fair the Yoko s have seen better days. - they did come from a road race mini and were secondhand. They may be cooked. But i have ran Pirrellis all round before and the yokos are no better.

I have ran a number of bizzare cars over the years (hence the seicento!), skodas, bmw e30s, minis and talbot sunbeams, but nothing has understeered like a seicento!!

Maybe fresh new yokos might tighten it up. It runs powerflex bushes and some lowering kit. Dont get me wrong..........its okay and will "nip through" roundabouts, but when you really go for it you never really know which hedge to point towards. It feels like a car waiting for the accident to happen which is going to be big.

I really need to get the handling fully sorted or my planned turbo conversion is going no where near it. Is it just me or is anyone else having problems?
 
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