[TR] [Spits] GT6 Bump Steer

[Dave1massey at cs.com]

In a message dated 8/15/2007 12:33:00 PM Central Daylight Time, 
tr3driver at ca.rr.com writes: 
> Well, not quite.  When the suspension moves, it moves through an arc.  If
> the tie rod follows the same arc as the steering lever, then it's effective
> length will not change.  Since one end obviously follows the lever, the
> other end needs to be at the effective center of the arc.
> 
> If memory serves, bump steer can also be caused by changes in camber as the
> suspension moves.
> 
Now that makes sense.  However if the wheel is turned the effective length of 
the arc followed by the tie rod is changed.  The arm on the vertical length 
will move either away from the pivot or towards it.  Obviously it is optimized 
at the straight ahead position but deviates from that optimized configuration 
as the wheel is turned.

Dave  

(Apologies for the lack of tedious disclaimer)