In theory, chassis flex works in cooperation with the suspension on rough tracks. It can provide some lateral twist in corners to help absorb imperfections in the track. The problem that I've found with this is that few manufacturers take this in to account when designing the cars, i.e., there's no way to accurately guage flex. After the Pro 3 was released, HPI tried to say that all the flex was intentional, and that it made the car a great rough track performer. Boy, were they wrong! You'd think off road cars would have more flexible chassis...
That's not to say that a SMALL degree of flex can't be used as a tuning aid, if you offer a method of adding or removing upper deck spacers. The problem with this is that you're adding or removing weight as well.
Finally, keep in mind that by changing the width of the pivot blocks and upper arms you could severely affect the roll center. It doesn't take much.
Last edited by Sorcerer001; 05-12-2004 at 02:40 PM.