01-20-2014, 07:51 PM | #1 |
Drives: 1LE Join Date: Nov 2013
Location: Killeen TX
Posts: 13
|
Please help with understeer.
Im new to auto crossing, and in the two events that I have been to I have ran into an understeer issue: turn left/right, but go straight!
Please provide advise. It all happens so fast that Im not sure if Im braking too early, to late, too much, or not enough, but one thing is certain, I am hauling ass before I get to a corner. |
01-20-2014, 08:20 PM | #2 |
Drives: cars Join Date: May 2011
Location: Oversneeze
Posts: 4,544
|
Get adjustable sways to tune it out or get reproductions 9" rear wheels to mount up front with 275 tires.
|
01-20-2014, 08:20 PM | #3 |
Drives: cars Join Date: May 2011
Location: Oversneeze
Posts: 4,544
|
Also if you don't turn off the nannies it won't let you power into oversteer and work it through the turn.
|
01-20-2014, 08:21 PM | #4 |
No Tags/Habitual Violator
Drives: 2012 SIM 2SS/RS & z71 Join Date: Sep 2011
Location: North Georgia
Posts: 2,379
|
List your mods and tire situation?
|
01-20-2014, 08:25 PM | #5 |
Drives: 1LE Join Date: Nov 2013
Location: Killeen TX
Posts: 13
|
2014 Camaro SS 1LE- stock
|
01-20-2014, 08:58 PM | #6 |
Romans10:9-13
Drives: /\yes, this is me/\ Join Date: Nov 2008
Location: Vermilion, Ohio
Posts: 4,435
|
We will all be speculating as to your cause without video. It could be you are taking a wrong line to the corner and apex and hence on the brakes longer, it could be you are braking too late, it could be just too fast for the corner or not enough confidence in the car, could be tire pressure, could be multiple things, etc
With the car you have, you have a great sway bar and tire setup.
__________________
|
01-20-2014, 08:59 PM | #7 |
Drives: 1LE Join Date: Nov 2013
Location: Killeen TX
Posts: 13
|
I got vid, but cant upload till later this week.
|
01-22-2014, 04:47 PM | #8 | |
Drives: AutoXer, RallyXers Join Date: Jun 2013
Location: Huntington Beach
Posts: 23
|
Its very normal for showroom stock cars to understeer. It's easier for the panicked street driver to handle a sliding front than rear. Thank the lawyers.
Free stuff to try: Drive better - Earlier braking, coast through most of the turn, then roll back on the gas. Braking too early is better than to late for a novice. Do not drive 'corner to corner', its an analog sport. Check your tire rollover and air. Usually I'd say add more to rear or drop a little from the front. But being way under inflated in front can give the same push effect of being over inflated (tread rolls, you only get 1/2" of contact, loose traction). Put some chalk marks on your front tires to see how much tire tread roll you're getting (local AutoXers can help with this). Fill up the gas tank. Running low is better for overall weight, running full is better for balance. I normally chose light over balance, but something to experiment with. Cheap-ish things to try: More camber in alignment. If you're an 'agressive' driver, just put all the camber you can in it, you'll still wear the outside edges first). Swap sway bars with a fellow camaro. If you want to stay "Street" (former "Stock") class legal you can only do one. You might be able to free swap someone's smaller front bar in for experimentation. But given the choice I'd go with a bigger rear. Not so cheap solutions: Better tires all around, better shocks all around (adjustable). Jay W Quote:
|
|
01-23-2014, 10:06 PM | #9 | |
Drives: 2010 Camaro 2SS Join Date: Jun 2013
Location: Colorado
Posts: 59
|
Quote:
No joke hacked 5 seconds off his course time just from driving "slower".
__________________
PIN IT TO WIN IT!
|
|
01-23-2014, 11:22 PM | #10 |
HT5 COTW 1/21/13
Drives: 2010 Camaro Inferno 2SS RS 6M Join Date: Apr 2011
Location: Pleasant Hill, Or
Posts: 2,486
|
|
01-25-2014, 07:10 PM | #11 |
Drives: 2010 2ss red LS3 Join Date: Aug 2011
Location: perkasie pa
Posts: 533
|
I was under the impression that the 1LE had only a little under steer.
|
01-26-2014, 09:12 AM | #12 |
corner barstool sitter
Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012
Location: Eastern Time Zone
Posts: 6,990
|
You can overdrive the entry to a corner and crank the wheel over too quickly for the tires to keep up in just about any street driven daily-driver if you try hard enough. The result once the front tires start sliding instead of holding a slip angle is heavy, plowing understeer, and this is particularly likely if you're still on the brakes because you knew you were too fast going in.
Understeer due to poor driver technique is not the same thing as the amount of understeer the car has built into it. Norm |
01-26-2014, 12:04 PM | #13 |
Drives: 2010 2ss red LS3 Join Date: Aug 2011
Location: perkasie pa
Posts: 533
|
If you were to do an HPDE where you get an instructor you will learn lots!
|
01-26-2014, 12:53 PM | #14 |
corner barstool sitter
Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012
Location: Eastern Time Zone
Posts: 6,990
|
Instruction is also fairly common at autocross as well.
Norm |
|
|
|
|