Thanks for all the nice comments. If this appears to be advertising please tell me, I will only answer the questions that are asked and the reasons. The road system has no anti-roll bar, at the moment, We found that not connecting the front wheels allows the wheels to work much better independently and the rising rate suspension meant that as the car loaded up, under cornering, roll was not a problem. We have got a development bar which we need to test on the track. It fits inside the nose so as not to affect the looks and is connected to the rockers by drop links which means it is not preloaded and can be easily disconnected. One of the problems is that as a roll-bar works by twisting along it’s length ours is much shorter and the arms act over a smaller length, compared to a standard bar, every thing is thin and soft, but, hence it is light.
Going on to the weight issue as raised by edmunsand we weighed the bits today, as I read the postings this morning, unfortunately we only had an old set of bathroom scales because the corner weights only go to 0.5 Kg. and it goes as follows.
Standard Caterham with 5/8 roll bar, Bilstien dampers with stiff spring, adjustable platforms was 12Kg.
Freestyle pushrod, Alloy spring damper [standard fit] !.4 Kg each =2.8Kg pushrods, damper tower, struts and alli rockers 2.6Kg Wishbones 2.0 KG each side =4.0Kg, spherical joints and all extra nuts and bolts about 1Kg. Total 10.4 development roll bar [not powder coated] with links about 1Kg.
The other consideration is that as we take the very heavy dampers and replace them with lighter ones closer to the centre of the car you reduce the yaw inertia. Bit like having a weight on the end of a piece of string and swinging it, the closer you get to the centre and the lighter it is the less inertia there is.
Hope that helps.