Corner weighting

[Gargoyle]

Re: Corner weighting

Hi Shuan,

Am very interested in handling mods and firmly believe that corner weighting the car would really help me on the track. Currently am on a set of coil overs with equal heights, feel that the car is leaning about 10 mm to the right as compared to the left. Also to note is that the rear right tyre is also leaning too much as compared to the other 3. Read your posts simply amazing. I am new here. Could you assist in hooking me up with someone who can help me out on this.

 

[Shaun]

Re: Corner weighting

Hi, between what points do you measure your ride heights? Is the 10mm tip actual measurement or 'feel' (eyeball) as you write? Coilovers are equal length in terms of top to bottom mount, or bottom spring perch to top cap? Free length or as installed? If the latter, is it measured with the car up on a lift or at rest down on the ground?

As for the over leaning RR tire, when/where/how was your car last aligned and what are the numbers?

Replied to your PM.. cheers

 

[james72]

Re: Corner weighting

Cheem but good acticle

 

[james72]

Re: Corner weighting

Any reputable workshop in sg that do corner weighting?

 

[Shaun]

Re: Corner weighting

Any reputable workshop in sg that do corner weighting?

Applied Performance, look for Chester.
Espace, look for Andy.
Tell them Shaun referred you.

 

[Jetpilot]

Re: Corner weighting

Applied Performance, look for Chester.
Espace, look for Andy.
Tell them Shaun referred you.

Will doing corner weighting affect daily drive?
It seems that we will get uneven height when the car is at flat ground but well weight distribution during corner. Is that correct?

 

[Shaun]

Re: Corner weighting

Will doing corner weighting affect daily drive?
It seems that we will get uneven height when the car is at flat ground but well weight distribution during corner. Is that correct?

Daily drive being public road commute, performance doesn't matter, especially not the the fine last bits of it that you're trying to pick up by applying track or race processes to the car.

Uneven ride heights are due to asymmetric mass placement in the car, but usually the factor is small. Asymmetric suspension coordinates are another tiny factor. Same goes for asymmetric bodywork. Using parts of the bodywork as a reference points for ride height is not as accurate as using a reference plane on the chassis if there is one ( and if there is, you need a second reference plane (setup patch)), but sometimes there is no choice especially with road cars under which there is no real setup patch . Any of this asymmetry will lead to uneven ride heights regardless of whether the car is corner weighted or not, unless you have asymmetric springing but this is not done on circuit cars.

A perfectly symmetric car will have at least one line of symmetry ride height wise, when the corner weights are ideal. The chassis can have rake OR tip, but not both to any degree, without negatively affecting corner weight.

All cars have their weight distribution messed up while cornering as they have centers of gravity above ground. Corner weighting only aims to minimize the upset, although the majority of load transfer is fixed by other factor and cannot be avoided. Only the smaller inefficiencies can be worked out.

 

[Shaun]

Re: Corner weighting

Will doing corner weighting affect daily drive?
It seems that we will get uneven height when the car is at flat ground but well weight distribution during corner. Is that correct?

Daily drive being public road commute, performance doesn't matter, especially not the the fine last bits of it that you're trying to pick up by applying track or race processes to the car.

Uneven ride heights are almost always the result of garages not knowing how corner weighting really works and/or being too lazy to get it done right. It takes some wild mass placement (huge mass asymmetry) before uneven ride heights become unavoidable. Asymmetric suspension coordinates are another tiny factor. Same goes for asymmetric bodywork. Using parts of the bodywork as a reference points for ride height is not as accurate as using a reference plane on the chassis if there is one ( and if there is, you need a second reference plane (setup patch)), but sometimes there is no choice especially with road cars under which there is no real setup patch . Any of this asymmetry will lead to uneven ride heights regardless of whether the car is corner weighted or not, unless you have asymmetric springing but this is not done on circuit cars.

A perfectly symmetric car will have at least one line of symmetry ride height wise, when the corner weights are ideal. The chassis can have rake OR tip, but not both to any degree, without negatively affecting corner weight.

All cars have their weight distribution messed up while cornering as they have centers of gravity above ground. Corner weighting only aims to minimize the upset, although the majority of load transfer is fixed by other factor and cannot be avoided. Only the smaller inefficiencies can be worked out.

 

[james72]

Re: Corner weighting

Daily drive being public road commute, performance doesn't matter, especially not the the fine last bits of it that you're trying to pick up by applying track or race processes to the car.

Uneven ride heights are almost always the result of garages not knowing how corner weighting really works and/or being too lazy to get it done right. It takes some wild mass placement (huge mass asymmetry) before uneven ride heights become unavoidable. Asymmetric suspension coordinates are another tiny factor. Same goes for asymmetric bodywork. Using parts of the bodywork as a reference points for ride height is not as accurate as using a reference plane on the chassis if there is one ( and if there is, you need a second reference plane (setup patch)), but sometimes there is no choice especially with road cars under which there is no real setup patch . Any of this asymmetry will lead to uneven ride heights regardless of whether the car is corner weighted or not, unless you have asymmetric springing but this is not done on circuit cars.

A perfectly symmetric car will have at least one line of symmetry ride height wise, when the corner weights are ideal. The chassis can have rake OR tip, but not both to any degree, without negatively affecting corner weight.

All cars have their weight distribution messed up while cornering as they have centers of gravity above ground. Corner weighting only aims to minimize the upset, although the majority of load transfer is fixed by other factor and cannot be avoided. Only the smaller inefficiencies can be worked out.

Wow! Too cheem for me to understand. Who do you trust more to do a good job? Chester or Andy? And whats the estimate damage like?