F-1 Roll Resistance

[olefud]

Awhile ago, during the course of a forum suspension discussion, the point was made that roll resistance was the result of suspension springs and antiroll bar or plate. In reply, it was pointed out that, to the contrary, F-1 suspension has decoupled the suspension springs from roll resistance. This puzzled me a bit in that the roll couple is developed by the tires and Cg, but it seemed possible that those clever scamps might engineer such a thing. In any event, I’ve been doodling with the concept and can’t seem to crack it.

Is it so, and, if so, how does it work.

[Jersey Tom]

They have not done such a thing. The corner springs contribute to the roll resistance. 3rd springs however, do not.

[RideRate]

I don't believe all the suspension springs are decoupled from roll. Each corner of the car has a wheel spring and each end has a anti-roll bar and pitch spring. The wheel spring and anti-roll bar determine the roll rate. The pitch spring and wheel springs determine the pitch rate. All three influence warp and one wheel bump. For total ride rides you would then factor in chassis, suspension compliance as well as the tire. So while the pitch springs themselves are decoupled from roll the other springs are not, and they determine roll rate. This was the layout last I checked.