lowering

[max_vtr]

hey i want to lower the beast and i think visually that 40mm on the front and 50-60 on the back looks best,however to achieve different heights between front and ear does tht mean i will only be able to choose the more expensive coilovers? im a bit of a novice with mechanics i read that someone lowered their torsion bar is this aswel as springs? any info is appreciated?

[Ryan]

1stly ,lowering more at the back imo is a big nono! i dont like the geometry of it like this and the effects it can have on handling.
40mm springs and shocks are available for the front, the rear can be adjusted to anything if done properly

[max_vtr]

1stly ,lowering more at the back imo is a big nono! i dont like the geometry of it like this and the effects it can have on handling.
40mm springs and shocks are available for the front, the rear can be adjusted to anything if done properly


so the rear can be adjusted on the torsion bar alone or is that aswel as the springs and shocks

[Ryan]

so the rear can be adjusted on the torsion bar alone or is that aswel as the springs and shocks

the rear doesnt have springs. just torsion bars for height adjustment. it does however have shocks

[max_vtr]

the rear doesnt have springs. just torsion bars for height adjustment. it does however have shocks

i see mate so i get the front lowered on springs and shocks and then get the new shocks for the back and match the torsion bar aswel? do you have to match the torsion bar or is it ok to just fit the new shocks on the rear?

[Ryan]

shocks and springs for front (doing it properly) shocks at rear, then the torsion bars need to be removed and refitted to correct adjustments for height

[Nick_T]

better off taking it to a garage to have the work done mate...
i paid £120 for mine to be lowered :y:

[MaRiO89]

Also having yhe car slightly lower on the back is ok, my track car is and handles superbly..

[Nick_T]

Also having yhe car slightly lower on the back is ok, my track car is and handles superbly..

yeah i can vouch for that, james, i quoted your car in another thread about suspension too :oops:

[KamRacing]

Also having yhe car slightly lower on the back is ok, my track car is and handles superbly..

It'll make it more prone to understeer though.. I prefer a more lively rear end :zainy:

[Hopcraft]

i see mate so i get the front lowered on springs and shocks and then get the new shocks for the back and match the torsion bar aswel? do you have to match the torsion bar or is it ok to just fit the new shocks on the rear?

yeah thats right but, if you just put shocks on the rear then it will stay at standard heigh and the front will be lowered.

So you were right in the first instance, match the torsion bar at the back to whatever height your springs are. id only go lower by 10mm max at the back. so 40 front 50 back etc.

[MaRiO89]

yeah i can vouch for that, james, i quoted your car in another thread about suspension too :oops:

:P

Cheers Tynan..

It'll make it more prone to understeer though.. I prefer a more lively rear end :zainy:

People say that but my car does anything but understeer..

Ask the people who have seen me on track and been in my car on track, the back end comes out soo predictably its amazing..:d

I dont think i have ever been in an understeering situation when at the limit, maybe its because my car is light on the back end or something, i dont know..

Or maybe my driving style doesn't allow the car to understeer..

I dunno..:panic:

[KamRacing]

<warning> I've tried to write the technical mumbo jumbo in my head into a post that makes sense. - just say if not clear </warning>


With any given weight there is an inherrant amount of mechanical downforce applied to each tyre which effect the ability of the tyre to grip. Under conditions like acceleration, braking, cornering etc this mechanical downforce changes due to the weight transfer. Each tyre then has a gain or loss of mechanical downforce ... Thus changing the potential of each tyre to grip and therefore the handling.

When the weight transfers the loss of mechanicall downforce in the unloaded corner / side is not added equally to the loaded side. Some is lost in the process therefore reducing the overall traction. So in tuning the suspension what we are aiming to achieve is not reduction in weight transfer but a reduction in the effect of the weight transfer.

still with me?

So relating this to the real world and James' car the stiffer front / lower rear limits the loss of mechanical downforce to the rear tyres under braking and makes the car more stable in the initial stages of the corner as unloaded rear tyres would be detrimental to the mechnical grip

When you put on the power though the weight transfer is front to rear meaning that the stiffer front / softer lower rear will speed this up. Increasing the speed of the loss of load on the front tyres potentially increasing power understeer.

I liked to have the back stiffer and more lively into the corner and control the oversteer with the throttle. Depends how you like to drive.. many would head backwards into a ditch with that sort of setup

[MaRiO89]

I see what your saying and it sounds about right..

It is stable under braking etc and turn in is spot on..

I tend to throw the car at the corner though with no throttle which gives oversteer..

I like to have fun btw, i dont worry about the best racing line or quickets lap time..

:d