Originally Posted by NutDriver
I think I'm confused. "Moving as much weight to the rear as possible will also help..." his reported understeer? This seems backwards to me (but I'm often accused of being bass ackwards!).
It seems that way to many people!
Adding more weight to the tire contact patches increases their grip, but (as with so many things in life) we don't "get back as much as we put in"; for instance, if we double the weight, we don't quite get double the grip-- we get a little less. But we need double the grip to get double the weight around a corner at the same speed (lateral acceleration). So moving weight to the rear of the car makes it looser.
We see this in full-sized cars, too. Front-engined cars tend to push; rear-engined cars tend to oversteer.
This is also why softening the front roll stiffness or increasing the rear roll stiffness will add front grip. Putting more weight on the outside rear tire (and less on the inside rear) results in less total grip on the rear, and therefore more on the front.
(Moving weight to the rear of the car DOES increase FORWARD grip on a rear-wheel-drive car. That's why dragsters have such a large rearward weight bias, even to the point of lifting the front tires off the ground on a launch.)