Roll bar

[tommygun]

What exactly does a roll bar do? I have never seem to have ever used it, indoors or out. Can anyone explain? Just wanting to know.

[magictorch]

Reduces roll in the corners but has very little effect on the straights so you can run a softer set up for bumpy conditions without sacrificing corner stability. Obviously as with all set ups its a compromise so experiment in small increments.

[emtee]

The purpose of an anti roll bar is to prevent the body from rolling excessively due to cornering force. When the car body rolls because of cornering, the outer wheels are compressed and the inner wheels are un-compressed. The anti roll bars tries to twist and so transfers the compression forces to the other wheel by pushing it downwards without affecting the suspension motion.

This is a principle I first heard of whilst grass tracking many many years ago.. ARBs are available for most RC cars and fitting one(or two..)may help your driven wheels stay in contact with rough terrain, so they might be a good idea for tracks with bumpy corners.. on bumpy straights an ARB might cause loss of traction as no cornering forces are present..? or maybe im talking cobblers who knows?

[gazhillAE]

It stops GTI'ing in corners!
As in with a front wheel drive car when the inside rear wheel pops up!
Front and rear will help limit this and also make the car easier to drive and more stable on corner entry

[tommygun]

Cheers folk, I'll have an experiments with this!