![]() So in two wheel bump the suspension will be a lot softer – only working on the bottom tube. Now the top torsion bar would act as an anti-roll bar. Say for instance, if we removed the top centre clamp. Now Let’s Turn One of the Torsion Bars into an Anti-Roll Bar… Note particularly, that each pair of upper and lower torsion bars are providing both ride and roll stiffness, just the same as a regular car without an anti-roll bar. So we now have two separate springs each side – two springs for the RH wheel and two springs for the LH wheel. (The torsion bars are flat laminated springs, rather than a round bar, so the centre clamp is very effective in stopping the bar from twisting in the centre.)Įach half of the torsion bar acts as a spring for the side that is twisting it. Note that the torsion bars are clamped in the centre. The lever arms make up the upper and lower suspension trailing arms, as shown. Both of the torsion bars have lever arms attached to each end. There is a torsion bar inside each of the two cross tubes. The point of this demonstration is to show you that roll stiffness from the anti-roll bar is the same as roll stiffness from the springs - in fact, that spring roll stiffness and ARB roll stiffness are interchangeable. Practical Demonstration of Ride and Roll Stiffness -Ĭheck out this front suspension for a VW Beetle. The anti-roll bar adds spring stiffness for cornering, while allowing the springs to act alone during braking and acceleration.įor road performance, all the same criteria apply, except we run softer springs, (but still as stiff as possible), so as to maintain acceptable ride on the road. If we go too stiff with the springs, grip at the tyres for braking and acceleration will be adversely affected. But the anti-roll bar has another super important role – it acts as a second spring to add spring stiffness at the tyre, but only in cornering. The anti-roll bar works to resist roll, as its name suggests. This helps keep the rubber at the tyre contact patch keyed into the profile of the road surface. In racing, we want stiff springs for best cornering grip. Spring Stiffness at the Tyre - The Anti-Roll Bar Acts as a SECOND SPRING, But Only in Roll. In two wheel bump, both arms move in the same direction, and the ARB has no affect. The ARB has two lever arms that twist the “torsion bar” in roll only. Let’s start with the important components of the anti-roll bar (ARB). But follow along with the rest of this article, and check out the true benefits of anti-roll bars when you are upgrading the handling of your car. This is a long way away from traditional thinking. In fact, for racing and road performance, the anti-roll bar is a “good thing” and there are no downsides – only limitations as to how stiff you can go, just the same as there are limitations as to how stiff you can go with the suspension springs in your car. The interconnection between wheels on the same axle has a negligible effect for racing and high performance. On the surface, this might appear to make sense. Proponents of this view say things like “the suspension ceases to be truly independent”. Racers know you need them to restrict roll, but many suggest the interconnection between wheels on the same axle causes “bad things” to happen. ![]() ![]() (Also known as sway bars or stabilizer bars.) Anti-roll bars are often characterized as a necessary evil. You can upgrade from just our Fab 9" to include a set of double hiem double adjustable lowers, a heavy duty adjustable torque arm, and multiple pick up point torque arm cross member.Today, I want to show you our very latest thinking on anti-roll bars (ARBs). ![]() This housing comes standard with a back brace, lower control arm brackets, spring perch cups, drain and fills, torque arm mount tabs, and late big ford ends (H1137). From our 5/8" thick face plate to our 3/16" Lower control arm mounts, everything was designed to handle high horsepower! The Axles Tubes are constructed out of 3" 4130 Tubing. Our housings are available with standard options that others charge for, and is designed be high strength to handle high horsepower cars. We fabricate every piece in house and this is not a kit simply welded together. It is superior in strength, and offers much more adjust-ability. Team Z's new 4th Gen F-body Fab 9 inch Is a great alternative to the factory GM housing and most other competitors as well. ![]()
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