ARB design

[avinash]

What should be the target roll gradient for bus rear axle suspension ?

[Tim.Wright]

1deg/g should be sweet mate.

[PhillipM]

Surely you want -1. Get everyone to lean in on the corners.

[bhall]

[Greg Locock]

That's a superb shot. It may even answer the question.

Having said that I doubt that it is even a consideration in bus design.

OP are you trying to design a real commercial bus or something else?

[Just_a_fan]

Having said that I doubt that it is even a consideration in bus design.

They certainly used to test roll angles for London buses "back in the day":

and
http://www.britishpathe.com/video/bus-tilt-tests
yes, I know there are chains and ropes in various places but it is a great snap shot of yester-year...

[Lycoming]

In that pic, they aren't testing body roll angle, they're measuring tip-over angle. That's not the same as the roll angle of the sprung mass. One is related to the roll gradient, the other is not.

[Greg Locock]

Actually that's rather nice, they are measuring both body on chassis roll and the total tilt angle there.

But I agree that the purpose of that measurement is not primarily to do with roll gradient.

[dynatune]

This testing procedure is far from "old". Each self respecting proving ground has one of those .....

[edited out advertisement. Please don't tout your own product at every available opportunity. Flyboy Steve.]