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Author Topic:   Wheel Scrub
posted October 10, 2001 10:55 PM
Okay, last year a guy told me that putting 68-72 chevelle rotors on our metric car would widen the front by 2.5 inches. I did this and also used 2 in offset wheels in the front as well. This got the frontend very wide,but it also gave the frontend alot of wheel scrub (distance that a wheel travels front to back, while turning). All year, we were fighting a push condition with the car. We tried alot of differant thing to fix it. Out spring and shock set up was identical to the majority of the faster cars at the track. Just wondering if the extreme wheel scrub could cause that condition.

posted October 11, 2001 10:09 AM

I have raced on dirt and asphalt both. I built a car similar to yours and had the same problem on dirt. (Worked great on asphalt.) I don't think your problem has anything to do with scrub radius. We had a push on entry, worse on wet, better on tacky, and better yet on dry, and best when a lot of rubber layed down on track. What we found out was the front was too wide. I think you are not getting enough roll and hence no side bite. Side bite is critical to a dirt car. Try putting 4 offs on front and see if it gets better. If it does then go back to your original rotors. I'd bet it would get better yet. Lower and wider is better on asphalt, but not on dirt.

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