Something of interest for 'tezza' owners.Thanks to Adian.Anybody else wanna add and share are all welcomed!
Originally Posted by 1JZtezza
hi Adian,
Thanks for the great reply.Maybe I may start a new thread under Altezza forums with some references to what is written in the 'race track junkie' thread and the links you sent.
Not that many track kaki altezzas-most are new to the track(on track)
Thanks again
Quote:
Originally Posted by adian
Hey man..
Yes yes, ride height and rake makes quite a big difference.
We did discuss it on ZTH on the RaceTrack Junkies forum. Here's a link to the discussion:
http://www.zerotohundred.com/newforu...ml#post3666780
and then further discussions with reference to how it will affect the geometry here:
http://www.zerotohundred.com/newforu...ang-sic-7.html
Generally, you would always want the car to be level. It's about 'corner-weights', and trying to adjust where you want the weight of the car to sit.
Altezzas are about 50-50 in dynamic weight distribution.
By having a lower front, means you push some of the weight to the front, ie say 52-48.
This leads to more understeer, as your front tyres will be overworked in comparison to the rear tyres (recall the basics: Traction Circle). Yes, the car will of course track a bit straighter, but unless you're into straightline drag-racing (which from your posts I notice you're not! hehe! You're a track addict!), then there's no reason why we'd want to have a lower front than the rear.
With a level car and 50-50 weight distribution, I get the car to handle as it is meant to handle: turn-in when you want it to, rear-end loses traction gradually so you can control it, and adjustable on the throttle.
Also with a level car, you can use the brakes to 'rotate' or 'yaw' the car as you turn-in to the corners with a trail-braking technique. If you use a front-heavy setting (lower front), trail-braking will not have as much an affect, as your front will understeer and the rear lacks the weight to 'yaw' the car using momentum.
Lastly, with after-market suspension, they tend to have a higher rear because they need to engineer into the product the fact that it is a road car, and the owner will sometimes carry 3 adults and luggage in the back! This is to provide clearance. I'm not kidding: when I was in R3, we would engineer all our R3 suspension kits and springs with slightly higher rears in order to accomodate this need!
Hope all that shit I explained helps. I'm really interested to meet the 'track-kaki' Altezza owners. If any of you are catching up pls feel free to SMS me. My hp is 012 688 1200.
ciaoss..
/adian
Quote:
Originally Posted by 1JZtezza
Hi adian,
I noticed you set your ride height(between front and rear) to be level ie the door sill or floor pan to be level; rather than front lower a bit than the rear as most after mkt non-adjustable susp do.Any particular reason??
I use Tein flex and also set the same and find that this gives a more responsive steering and better handling.front lower seems to track straighter and understeer a bit when off-throttle.
Would appreciate your inputs or experiences.
Originally Posted by 1JZtezza
hi Adian,
Thanks for the great reply.Maybe I may start a new thread under Altezza forums with some references to what is written in the 'race track junkie' thread and the links you sent.
Not that many track kaki altezzas-most are new to the track(on track)
Thanks again
Quote:
Originally Posted by adian
Hey man..
Yes yes, ride height and rake makes quite a big difference.
We did discuss it on ZTH on the RaceTrack Junkies forum. Here's a link to the discussion:
http://www.zerotohundred.com/newforu...ml#post3666780
and then further discussions with reference to how it will affect the geometry here:
http://www.zerotohundred.com/newforu...ang-sic-7.html
Generally, you would always want the car to be level. It's about 'corner-weights', and trying to adjust where you want the weight of the car to sit.
Altezzas are about 50-50 in dynamic weight distribution.
By having a lower front, means you push some of the weight to the front, ie say 52-48.
This leads to more understeer, as your front tyres will be overworked in comparison to the rear tyres (recall the basics: Traction Circle). Yes, the car will of course track a bit straighter, but unless you're into straightline drag-racing (which from your posts I notice you're not! hehe! You're a track addict!), then there's no reason why we'd want to have a lower front than the rear.
With a level car and 50-50 weight distribution, I get the car to handle as it is meant to handle: turn-in when you want it to, rear-end loses traction gradually so you can control it, and adjustable on the throttle.
Also with a level car, you can use the brakes to 'rotate' or 'yaw' the car as you turn-in to the corners with a trail-braking technique. If you use a front-heavy setting (lower front), trail-braking will not have as much an affect, as your front will understeer and the rear lacks the weight to 'yaw' the car using momentum.
Lastly, with after-market suspension, they tend to have a higher rear because they need to engineer into the product the fact that it is a road car, and the owner will sometimes carry 3 adults and luggage in the back! This is to provide clearance. I'm not kidding: when I was in R3, we would engineer all our R3 suspension kits and springs with slightly higher rears in order to accomodate this need!
Hope all that shit I explained helps. I'm really interested to meet the 'track-kaki' Altezza owners. If any of you are catching up pls feel free to SMS me. My hp is 012 688 1200.
ciaoss..
/adian
Quote:
Originally Posted by 1JZtezza
Hi adian,
I noticed you set your ride height(between front and rear) to be level ie the door sill or floor pan to be level; rather than front lower a bit than the rear as most after mkt non-adjustable susp do.Any particular reason??
I use Tein flex and also set the same and find that this gives a more responsive steering and better handling.front lower seems to track straighter and understeer a bit when off-throttle.
Would appreciate your inputs or experiences.