Front to Rear Wedge

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Cerberus
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Front to Rear Wedge

Post by Cerberus »

How sensitive is the chassis to adjustment, will 1mm make any difference or is there a minimum of say 5mm before you notice anything? the reason i ask is the nearside rear is a pain in the arse to adjust with a C spanner :roll: i'm currently running 18mm and it oversteers when having fun.
Must try harder
stylussprinter
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Re: Front to Rear Wedge

Post by stylussprinter »

It very much depends on how fast and or agressive you're going for oversteer to occur --- ie. are you meaning to hang the tail out or is it catching you out :?:
Regarding noticing 1mm wedge adjustment , I would say that you would only notice by monitoring lap times . 5mm yes , you'll notice. Higher = more oversteer . Lower more rear grip but more understeer --- pays you money and takes your choice :roll: This assumes that all other parameters of adjustment are ok / tyre pressures , shock settings etc etc.
I just love the Stylus but she keeps swallowing £££ !
Alfa Red 159 2.4 jtdm ti 260bhp 365lbft / BilsteinB12 + Adjustable Powerflex camber/castor bushes. Red STYLUS 2lt zetec 231bhp 185lbft Dunnell . RED 1972 Alfa 2lt GTAm replica 170bhp.
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Cerberus
Stylus owner
Posts: 460
Joined: Tue Aug 29, 2006 9:47 pm
Location: Bristol

Re: Front to Rear Wedge

Post by Cerberus »

stylussprinter wrote:It very much depends on how fast and or agressive you're going for oversteer to occur --- ie. are you meaning to hang the tail out or is it catching you out :?:
Regarding noticing 1mm wedge adjustment , I would say that you would only notice by monitoring lap times . 5mm yes , you'll notice. Higher = more oversteer . Lower more rear grip but more understeer --- pays you money and takes your choice :roll: This assumes that all other parameters of adjustment are ok / tyre pressures , shock settings etc etc.

It's catching me out, its not bad just seems to slip slightly then grip again which is unerving (hard to explain more like a little protest from the tyres) as for springs/shocks =250lbs F 200lbs R played with settings and i am happy with them, tyre pressures are 16lbs on Toyo T1S, i think i will drop the rear slightly and see what happens, i did have 300lbs F 250lbs R but it was to hard and understeered badly, whereas now the front turns in and grips beautifly having said that i do nee to make some new lower wishbones to give a bit more caster as i have only got +3* which makes it a bit unstable at speed.
Must try harder
stylussprinter
Stylus owner
Posts: 3772
Joined: Fri Mar 10, 2006 8:49 pm
Are you a Stylus owner?: yes
Location: ASTON CLINTON BUCKS

Re: Front to Rear Wedge

Post by stylussprinter »

Cerberus wrote:
stylussprinter wrote:It very much depends on how fast and or agressive you're going for oversteer to occur --- ie. are you meaning to hang the tail out or is it catching you out :?:
Regarding noticing 1mm wedge adjustment , I would say that you would only notice by monitoring lap times . 5mm yes , you'll notice. Higher = more oversteer . Lower more rear grip but more understeer --- pays you money and takes your choice :roll: This assumes that all other parameters of adjustment are ok / tyre pressures , shock settings etc etc.

It's catching me out, its not bad just seems to slip slightly then grip again which is unerving (hard to explain more like a little protest from the tyres) as for springs/shocks =250lbs F 200lbs R played with settings and i am happy with them, tyre pressures are 16lbs on Toyo T1S, i think i will drop the rear slightly and see what happens, i did have 300lbs F 250lbs R but it was to hard and understeered badly, whereas now the front turns in and grips beautifly having said that i do nee to make some new lower wishbones to give a bit more caster as i have only got +3* which makes it a bit unstable at speed.
How old are the tyres -- are they getting hard after 2 to 3 years :?:
16 psi for Toyos is low for best performance , Yokos are ok at 16 but 17 at lowest for toyos .
I just love the Stylus but she keeps swallowing £££ !
Alfa Red 159 2.4 jtdm ti 260bhp 365lbft / BilsteinB12 + Adjustable Powerflex camber/castor bushes. Red STYLUS 2lt zetec 231bhp 185lbft Dunnell . RED 1972 Alfa 2lt GTAm replica 170bhp.
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Cerberus
Stylus owner
Posts: 460
Joined: Tue Aug 29, 2006 9:47 pm
Location: Bristol

Re: Front to Rear Wedge

Post by Cerberus »

i've worked the pressures down from 20lbs in 2lb increments 16lb feels better especially on the fronts, so i will take the rears back up and see, i really need to get it on a track two days would be nice, on the plus side my latest engine seems strong :)
Must try harder
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