Welcome to the North American Subaru Impreza Owners Club Wednesday August 27, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC General > Motorsports

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 05-17-2004, 12:14 PM   #1
anti.team
Scooby Specialist
 
Member#: 55812
Join Date: Feb 2004
Location: Warren, MI
Vehicle:
2002 WRX - Silver
Warren:Throw your dubs up

Default Toe out - where and why?

I've been reading up on allignment spects that will be ideal for autocross. I think I'm gonna try for -1.5 deg cront camber, -1 deg rear.

What I'm not sure about is toe out. I know that toe out will increase tire wear. People say that toe out in the rear will help the car rotate better, which I understand. I've also read that some toe out in the front will help with turn in. Is this true? I don't really understand why this would work. The way that I see it is that the outside tire is going to be loaded when turning and if this tire is pointing out more it would hurt turn in. What's wrong with my logic?
* Registered users of the site do not see these ads.
anti.team is offline   Reply With Quote
Old 05-17-2004, 04:34 PM   #2
Storm
Scooby Guru
 
Member#: 5218
Join Date: Mar 2001
Chapter/Region: MWSOC
Location: SAUL'S Motorsports
Vehicle:
96L Most Over-
Developed Beater

Default

The way I understand it, the front end is weighted relatively equal before you enter the turn(say, under braking). When you initiate the turn, the inside wheel will pull you in just a tad harder, giving the outside wheel some weight. That little extra effort by the inside wheel makes the car turn in crisper.

Also, during the turn, any weight the inside wheel has is helping to pull the front end in. Scrubbing as you go around. There are benefits of "ackerman effect" that also occur that toe out may help. I have a basic understanding of Ackerman, but not enough to try and explain/justify benefits of altering the amounts.


The problem with your logic is that you are (in my opinion) right. The outside wheel is doing most of the work. When you add toe out to the front, the outside wheel is not pointing where you want the car to go (as much) and any benefit you get in crispness when you first initiate the turn is gone once the outside gets weighted. Having the outside wheel pointed closer to where you want to go will pull the car in through the rest of the turn and through the exit.

I'm no suspension guru....I tried running 1/16 toe out for many seasons only because that was "the hot autocross alignment". When I tried running with zero toe up front, my times improved. I felt the car work further through the turns instead of pushing when I applied throttle.

When I started running zero toe up front and toe out in the rear....boy howdy.....the car is a friggin blast on course! It doesn't like rainy streets though....I have to make that adjustment between street and race duty to save tire wear and potentially body integrity if it rains.

Jay Storm
There's a fine line between "hobby and "mental illness"......
Storm is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
I now honestly see where and why all the srt jokes come from Flyn'Rex Texas Impreza Club Forum -- TXIC 81 11-15-2004 11:11 PM
If I add negative camber to the front, will I end up with toe in or toe out? Impreza Rider Brakes, Steering & Suspension 11 03-20-2004 10:53 AM
Toe out in rear to reduce push? Ultralight Motorsports 8 11-26-2002 02:53 PM
camber/toe out boxer02 Brakes, Steering & Suspension 4 10-08-2002 06:11 PM
to toe out or not to toe out TheWRX Brakes, Steering & Suspension 6 05-03-2002 11:42 AM


All times are GMT -4. The time now is 07:41 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.