|
Re: Make it handle
Rstone1, alot of variables to think about there. KPI(king pin inclination), included angle and scrub radius.
If you decrease KPI the car tends to lose stability and the steering has a harder time returning to center, great for low speed parking lot type stuff but not so great for a performance car. But keep in mind, caster also has a effect on this.
The more you decrease KPI the more wheel back spacing you'll need to keep scrub radius in check. Of course the position of the spindle on the upright in or outboard effects this.
The more you decrease KPI the the closer together the lengths of the upper and lower control arms become which effects camber curve. The position of the control arm mounts relative to the frame in or outboard influences this as well.
Anyways, it seems you already are aware of the principals of KPI but are wondering what effects too little would have and at what point would you encounter driveability problems. Since you would have to incorrectly engineer a part to find out, cant say for sure but typical KPI is around 5-6 degrees so if I had to guess Id say at half that spec you start to run into issues. I suppose you could put vehicles with wildly varying purposes, say a WW2 era Jeep and a new corvette on a modern alignment machine to get the numbers so you'd have a way to relate the numbers to how a vehicle drives but even then there are other variable in play there also so while it may give you a idea its not exactly a sound scientific method.
Just out or curiosity, why are you asking this?
|