[V8Vairs] Camber

[Sethracer at aol.com]

In a message dated 5/12/2011 12:44:24 P.M. Pacific Daylight Time,  
jim.acker at comcast.net writes:

Geometry  is tricky.  The travel is an arc, so you always want both arms 
parallel  or higher at the wheel.  This avoids positive camber at the 
beginning of  the travel.  The degree to which your arc creates negative camber is 
math  I don't know, but I applied a basic assumption that seemed to work.  If 
 you make the distance the same from the center of the drive shaft to where 
 both arms attach, on both ends, you have a perfect parallelogram.  Now,  
build your mounts so the upper arm is slightly shorter (I think I picked an  
inch shorter).  As the travel moves up, the shorter arm follows a shorter  
arc and creates negative camber.  

Jim  Acker



So Jim - I guess that could be described as the Acker-man  effect!   (grin)
 
 I would be interested in a graph of the actual camber as it goes  through 
the full up down travel. But I don't quite understand. If you are  running 
fixed length driveshafts, why are you running an upper link - or are you  no 
longer running an upper link? Also a note, the shorter upper link will  
provide increased negative camber under droop as well.

 

Seth Emerson

C's the Day! -  Corvair, Camaro, Corvette
San Jose, CA