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Frank J. Bauer                                                                  
dassault systemes of America     email:fjbauer@dsavm.e-mail.com                 
Subject: Wheelspin                                                              

eric sez:                                                                       
>> Let me say this again.....  For maximum traction. Be it cornering,           
>>  braking or accelerating, 2WD or AWD (It dosen't matter) the tire MUST be    
>>  operating at optimum slip (about 10% for a street tire) It physics and      
>>  it's the law.......                                                         
den jay sez:                                                                    
>Question #1: Um.. you mean for maximum *performance*, maybe?  I'm kinda        
>hard-pressed to see how 10% slip gives you more traction than no slip.         
>Question #2: Semantics aside, WHY?  I don't doubt you, I just want to learn    
>more about this.                                                               

traction also refers to the force exerted on a vehicle drawn by motive force.   
in this sense, eric is semantically correct that you are maximizing the force.  

given that the coefficient of friction is less than 1, you WILL have slip.      
now we are just arguing about what is optimal.