F1technical.net

IS the folowing statement true or not......

"when u increase the stiffness of the antiroll bar ie by either increasing the diameter of the bar or by reducing the arm lenghts of the bar..... there will be increase in weight transfer from the inside to the outside tyres!!!!!"

If The above statement is false, PLS explain why.....

It is true. Thinner or longer anti roll bar twists more and distributes less momentum/rotation to suspension on the other side (it has less influence on it than thicker or shorter anti roll bar would have).

Unlike the springs - the anti-roll bars directly connect the wheels across the axle. If the bar is stiff enough, when one wheel moves up it will try and pull the other one up. So the loaded wheel is literally having weight transferred onto it.

The stiffer the bar (tube torsion stiffness and lever arms combined as you say) the more weight is moved across.

But the poster asked if there would be an increase in transfer from the inside to the outside tyre!

zac510 wrote:But the poster asked if there would be an increase in transfer from the inside to the outside tyre!

cfditya wrote:there will be increase in weight transfer from the inside to the outside tyres!!!!!"

I understood it as relation between left and right tyre. He wrote tyres not tyre. I'm not sure but I think RH1300S also understood it as I have.

False, with a caveat
The only things that affect the TOTAL weight transfer are CG height and track width (wheelbase for accel/braking). The A/R bar changes how this weight transfer is distributed between the front and rear axles in roll. The caveat is that in an extreme situation where the roll stiffness is very low and the suspension geometry is designed with a lot of jacking.
The chassis of the car can actually lift, causing an increase the CG height, causing more weight to transfer, causing more jacking and on and on until you either flip, or the suspension runs out of stroke.

Erik

The outside wheel is loaded in a corner, the anti-sway bar limits body roll which limits weight transfer, CG & polar movement from affecting the outside wheel.

Suspension roll centres are also related ( low suspension roll centres will limit chassis jacking as will anti-dive suspension design.) These articles may contain useful information that could be of interest.

http://www.wikipedia.org/wiki/Automotiv ... ion_design

http://www.wikipedia.org/wiki/Car_handling

http://www.wikipedia.org/wiki/Weight_transfer

http://www.wikipedia.org/wiki/Anti-roll_bar

Welcome to the Forum.

good links u ve given, but i have a doubt wht is the difference between wt and load transfer.......thanks anyways!!!!!

Good links Carlos - I had never given thought to the importance of using the words "weight" & "load" differently (which of course they are!).