Quad-bike wrangle in the frame
AN ever-broadening range of industry players are becoming embroiled in the quad-bike roll-over protection debate.At issue is whether these increasingly popular farm workhorses should be fitted with anti-crush devices, polarising opinion between the suppliers and safety experts.
Last week the news centered on the emergence of posters at a big Queensland field day, Farmfest, where quad-bike manufacturers displayed their anti-roll bar campaign posters for the first time.
Safety bodies reacted immediately, challenging the validity of quad-bike industry research with the NSW Farmers organisation calling for the Heads of Workplace Safety Authorities (HWSA), representing state occupational health and safety departments, to endorse the mandatory fitting of roll-bars to quad-bikes.
NSW Farmers’ Industrial Relations Committee Chair Graham Morphett (pictured) says quad-bikes are an essential farm vehicle used for mustering to weed spot spraying.
“The strategy adopted by the HWSA aims to give farmers the option of fitting additional safety devices, such as roll-bars, to their quads,” he said.
“We are calling on the HWSA to go one step further and endorse the mandatory fitting of roll-bars, with more than half of all fatalities occurring when a rider is crushed beneath their quad,” Mr Morphett added.
NSW Farmers says accidents involving quad-bikes in Australia this year have already claimed 12 lives.
As well, last week saw the HWSA detail how a Trans-Tasman quad-bike industry working group was drawing up new safety measures as part of an “ambitious industry strategy” aimed at reducing fatalities and injuries from on-farm use of quad-bikes.
“According to Farmsafe Australia, since 2000 there have been more than 130 deaths on farms across Australia involving quad-bikes while in New Zealand an average of five people are killed on farms each year and over 845 are injured,” HWSA chair, John Watson, said.
“Most fatalities are a result of head injuries or from being trapped under overturned vehicles,” he aded.
Mr Watson Australia’s work health and safety regulators have committed to taking a tougher stance on farm quad bike safety.
He drew attention to New Zealand’s Department of Labour quad-bike safety campaign launched last November.
“A range of strategies have been developed that will involve working with the farming community to improve safety and reduce injuries and fatalities,” Mr Watson said.
Anti Roll Bar - News
Last week the news centered on the emergence of posters at a big Queensland field day, Farmfest, where quad-bike manufacturers displayed their anti-roll bar campaign posters for the first time. Safety bodies reacted immediately, challenging the
As a result, there's no need for anti-roll bars or stiff suspension coils to keep the body from listing excessively in a bend. Because the bump and roll modes act independently, the Kinetic system can be tuned to provide a controlled response over
The S adds firmer dampers, stiffer bushings, a new upper front wishbone and a wider rear anti-roll bar. An optional wheel-and-tire enlargement adds 19s front and 20s rear, along with grippier Pirelli P Zero Corsas. In sum, the changes deliver a
Compared to the standard MINI the Coupe is also fitted with optimised springs and dampers plus an uprated rear anti-roll bar. To enhance overall body rigidity, the weight distribution compared has been shifted forward. DSC (Dynamic Stability Control)
I've fitted bilsteins from a Griff with adjustable platforms along with 500lb springs front and 375lb springs rear. Now looking to lessen the rear roll so my question is will a rear antiroll bar from a more modern TiV fit my S?
Ferrari: Rear Dual Rate Anti Roll Bar « Scarbsf1's Blog
When comparing the fortunes of the three leading teams, one stand out feature has been Ferraris kindness to its tyres and its great traction. Although both these traits are hugely complex and achieved by a variety of factors, we have been able to identify a solution in Ferraris rear suspension that may be providing some of this mechanical grip. As one of the few leading teams to retain pushrod suspension in 2011, Ferrari have at least given a chance to see the clever mechanical set up at the of the car. We have already discussed the relative merits of pushrod Vs Pullrod and looked at the rear end packaging of the Ferrari (see the links at the end of this article). But what this detailed shot by Liubomir Asenov shows us, is the clever arrangement of the rear Anti Roll Bar (ARB). Ferrari have developed sprung drop links to create a dual rate ARB, which gives the team the advantage of soft roll control for low speed grip and stiff roll rates for high speed aero grip.
An Anti Roll Bar (ARB) is a spring that helps the chassis resist roll when cornering. Typically in a racecar this is a relatively simple “U” shaped arrangement, with levers acting on a torsion bar. Drop links lead from the rocker to the ARB. When the car rolls one rocker goes down and the other goes up. The links twist the ARB, which in turn provides the spring effect to resist the cars roll. A stiff rear ARB will be good for maintaining the underfloors attitude to the track, in order for the diffuser to work at its best. However at lower speed, a softer ARB will aid grip by allowing each tyre to maximise its contact with the track. Clearly some tracks will favour aero over mechanical grip, but laptime gains be found if the car can improve both aero and mechanical grip.
What Ferrari has done is to replace the drop links that lead from the suspension rocker to the ARB levers with small coil springs. Now when the car rolls, the softer coil spring compress first, these provide a soft initial ARB rate, which provides good mechanical grip. Then as their movement is taken up, the coil springs act like solid links to the ARB and the stiffer main ARB provides the tighter roll control to aid the underbodies aerodynamics.
This solution appears to be unique to Ferrari in F1, but is a known solution in other race series. Andrew Thorby (Designer for Panoz, Lister, McLaren MP4-12c GT3) pointed out to me that Lola is known to have used this solution in some of their cars, using either coil springs or belleville springs. He also pointed out that although small; these Ferrari coils springs are mounted quite high up, over what is already a relatively high suspension package, thus upsetting the cars Centre of Gravity slightly. Other teams achieve similar variable rate ARBs with the geometry of the drop links and levers. Whether pushrod or Pullrod, any team could conceivably employ these spring links to provide this variable roll rate.
Tenneco's Kinetic Suspension, the Anti Anti-Roll Bar; 
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Sway bar - Wikipedia, the free encyclopedia
A sway bar or anti-roll bar forms part of an automobile suspension. ... A sway bar increases the suspension's roll stiffness—its resistance to roll in turns, independent of its ...
Anti Roll Bar | Anti Roll Bars | Sway Bar
Anti Roll Bar - Find information and buying options for the anti roll bar or sway bar for your vehicle.
anti-sway bar: Definition from Answers.com
anti-sway bar n. A metal bar connecting the left and right suspension systems at the front or rear of an automobile or a truck, used to stabilize
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Eibach Anti-roll Bar Kit, Toyota Celica, Gt & Gts. Eibach Anti-Roll-Kits reduce body roll through increased design stiffness over stock bars. ...
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Competition Engineering anti-roll bar kits make it possible for you to preload the chassis, eliminating body roll during hard launches. ...