Notices
Track & Autocross Talk lap times and race lines.

Leaning; bad?

Thread Tools
 
Old Jun 27, 2004 | 04:22 PM
  #1  
txhatch's Avatar
txhatch
Thread Starter
I hate 2003 Noobs.
 
Joined: Aug 2002
Posts: 5,112
Likes: 0
From: tx
Default Leaning; bad?

I tend to be a big leaner while taking corners. Do you guys think this hurts performance at all? Any tips to stop?
Reply
Old Jun 27, 2004 | 10:26 PM
  #2  
syclone's Avatar
syclone
Registered User
 
Joined: Jan 2004
Posts: 318
Likes: 0
From: SoCal
Default

umm.. what car do you have? what suspension mods if any?
Reply
Old Jun 27, 2004 | 10:28 PM
  #3  
DakarM's Avatar
DakarM
 
Joined: Oct 2000
Posts: 44,908
Likes: 0
From: Location Location
Default

are you talking about body roll of the car? or you leaning your body?

body roll has minimal affect on cornering performance. according my autox guru/god.
__________________
'00 Dakar Bus CRS Edition
LCD Squad #0001
Originally Posted by WiLL
...I really wanna get out and shoot people.
Reply
Old Jun 27, 2004 | 10:36 PM
  #4  
white_n_slow's Avatar
white_n_slow
it's my D in a B
 
Joined: Aug 2001
Posts: 24,787
Likes: 1
From: Your Mom's House
Default

yeah, body roll can negatively affect handling in a number of ways. First, steering response is hurt because you must wait for the suspension to load up before the car actually changes direction. Also, the more body roll you have, the more likely your tires are to have poor contact with the pavement. Ideally, you want the tire flat to the ground during a turn, but if the car is leaning over 5 degrees, only part of the tire is doing its job. Of course, its impossible to totally illiminate body roll in cars like ours, but limiting it will improve your handling.

What is your suspension setup? good ways to reduce body roll are swaybars, higher spring rates, and better dampers. You'll also find that a bit of negative camber will improve tire/pavement contact too.
Reply
Old Jun 28, 2004 | 03:03 AM
  #5  
.RJ's Avatar
.RJ
Go Fast Crack Whore
 
Joined: Dec 2002
Posts: 147
Likes: 0
Default

Originally Posted by white_n_slow
Ideally, you want the tire flat to the ground during a turn, but if the car is leaning over 5 degrees, only part of the tire is doing its job.
Where do you guys get this crap from? You are driving a 2500+ lb mass - there is going to be weight transfer no matter what, and there's nothing you can do to stop it.

My car @ VIR - no at all problems from the "lean"

Reply
Old Jun 28, 2004 | 08:29 AM
  #6  
white_n_slow's Avatar
white_n_slow
it's my D in a B
 
Joined: Aug 2001
Posts: 24,787
Likes: 1
From: Your Mom's House
Default

I'm not saying your car shouldn't lean at all... its got suspension travel, thats impossible. What I'm saying is that excessive lean can be detrimental to handling in the ways I just mentioned. And yes, for the tire to be most effective, it should be more or less flat to the ground during a corner, so the entire contact patch is being used (precisely why increased negative camber results in better grip). If the car leans over 5 degrees, and you've got 0 degrees static camber, the tire isn't working to its full potential. This problem can be adressed both via allignment and via a reduction of body roll.
Reply
Old Jun 28, 2004 | 09:05 AM
  #7  
CivicSiRacer's Avatar
CivicSiRacer
Honorary Moderator Alumni
 
Joined: Sep 1999
Posts: 8,735
Likes: 0
From: Someplace with cones=AUTO
Default

You want to see lean?



__________________
Sponsored by: KAM Racing Sports, Falken Tires, Progress Technology, Brady's High Performance, Taggart Performance Engineering, Rotora Brakes
Autocross is: 90% driver, 5% car, & 5% CRAZY MOJO!
Autocross Help Page
Reply
Old Jun 28, 2004 | 10:04 AM
  #8  
.RJ's Avatar
.RJ
Go Fast Crack Whore
 
Joined: Dec 2002
Posts: 147
Likes: 0
Default

Originally Posted by white_n_slow
What I'm saying is that excessive lean can be detrimental to handling in the ways I just mentioned.
Body lean is not the problem. Controlling weight transfer and suspension is.

And yes, for the tire to be most effective, it should be more or less flat to the ground during a corner, so the entire contact patch is being used (precisely why increased negative camber results in better grip).
That is why you run more static camber, yes. There are so many factors when you start making changes to the suspension - just reducing body lean isnt really a goal, its usually a byproduct of positive changes. By itself its a pretty poor benchmark, and you're going to have plenty of it until you start getting into springs that are too stiff for the street. I still had alot of roll (or lean?) in my 91 on track when I had 475/600# springs.
Reply
Old Jun 28, 2004 | 11:22 AM
  #9  
white_n_slow's Avatar
white_n_slow
it's my D in a B
 
Joined: Aug 2001
Posts: 24,787
Likes: 1
From: Your Mom's House
Default

Originally Posted by .RJ
Body lean is not the problem. Controlling weight transfer and suspension is.


I guess thats a better way to put it... my problem comes from weight transfer and body motion being so interlinked. So by controlling weight transfer, you're also effecting (and usually reducing) body roll. :thinking: I guess your description makes more sense.
Reply
Old Jun 28, 2004 | 05:59 PM
  #10  
txhatch's Avatar
txhatch
Thread Starter
I hate 2003 Noobs.
 
Joined: Aug 2002
Posts: 5,112
Likes: 0
From: tx
Default

I am talking about me leaning. I can fix car body roll.
Reply



All times are GMT -8. The time now is 09:19 AM.