On Fri Dec 3 12:35:39 1999, Daniel Neuman <dneuman@stars.sfsu.edu> wrote:
> Hello All,
> I have a handleing question for everybody. Sense I redid the rear end
> and cut my rear bump stops to the 'improved street version' from Bob Sharpes
> manual I have noticed a change in how the car goes around corners.
> I have the comp springs and swaybar upfront with the stock bumpstops.
> Now when I go around corners it feels like the rear end is 'pushing'?? the
> front end of the car and causing the car to turn wider than before or in
> extreme cases the front tires lose traction and slide where before pulling
> the same stunt they would not??
> Is there a name for this condition?/ Oversteer?/ Understeer??? I am
> hoping that cutting down the front stops will fix this??
This is almost a classic definition of understeer. Think of it this way...The
car doesn't want to turn, so it 'under steers.'
Cutting down the front stops should give you a noticeable improvement. With
the lowered suspension and the stock jounce bumpers, you have reduced ride
travel until the suspension hits the bumpers. When those bumpers contact, the
'spring' stiffness seen by the wheel goes up dramatically. By cutting down the
bumpers you are increasing the amount of suspension travel you have until the
bumpers make contact.
You should also notice a little improvement in ride quality when going over
bumps too.
Regards,
Chris Coker - Vehicle Development/Vehicle Dynamics Analysis Engineer
Royal Oak, MI
'69 1600 - SPL311-24529
1600 G Production Racer
|