Hi all,
As listed below, would I be able to change a Leaf spring to a coil spring or a torsion bar to a coil spring? Or even a torsion bar to a leaf spring? ie: Change the springing system? And that would mean changing the mounting points for the suspension. Not for class 7a or 8.
".4 Springs and shock absorbers – Additional to MSA Regulation M6.6.
This ACTC Regulation will be incorporated into MSA M 6.6 from 1st January 2006
Springs and shock absorbers may be changed and additional springs and shock absorbers may be fitted. Anti tramp bars, anti roll bars, Panhard rods and Watt linkages are permitted. Except for classes 7a and 8 the original springing system and spring mounting points must be retained in operational use, e.g. leaf spring systems must retain at least the minimum number of leaves specified by the manufacturer and must not be replaced by coil or other springing systems."
''''Springs and shock absorbers may be changed and additional springs and shock absorbers may be fitted.'''''
ReplyDeleteI believe the intention is to allow different springs of the same type/design...rather than a complete change of springing medium.
However, with a leaf spring it seems possible to fit a ''helper'' spring, which is a coil, in addition....as caravanners once did.
Of course, shockers and their medium are free....as in choice, not cost.
Interestingly, whilst anti-roll bars are permitted, I assumed that to mean, I could actually remove mine....
doth class 7 loom?
i take the rule wording to mean you can only change "system" if you ARE in class 7a or 8...
ReplyDeleteI agree with James. The punctuation in the sentence is difficult to follow but I think it makes it clear.
ReplyDeleteI'd love to be able to change torsion bar to coil spring. The rear beam on a 205 weighs a ton!
ReplyDeleteRemoving/disabling anti-roll bars.
ReplyDeleteBig snag (as I may have mentioned on the old site) is that somewhere within Construction and Use Regs is a proviso that you may not modify a vehicle in any way that makes it less roadworthy. Has huge legal and insurance implications.
If anti-roll bars were an 'Option' then clearly they can be removed. If 'Standard fitment' then removal/disablement leaves you wide open in the event of an accident.
The stuff about classes 7a & 8 clarifies that the rule does not apply to them as there is no "original" system for these cars.
ReplyDeleteYou can add a coil spring system, typically round the shock absorber. You cannot remove the original spring system. If the car came with leaf springs it must have leaf springs, if it came with a torsion bar, it must have a torsion bar. However......
To get a better spring rate you may change the original spring to one of a different stiffness. So you could in practice change the original spring for one that has no springing effect, but just locates the suspension system, and then rely totally on the added coil spring for all the springing effect.
But before you do this, please make sure that the engineering is sound, or you will end up with Nigel Brown rapping your knuckles. :)
Concise advice from Simon. ; )
ReplyDeleteCheers for that advice, sounds good to me. Thats what I wanted to here!
ReplyDeleteOne last question, is the anything from stopping me changing the mouting points of the original springing system or the rear tralling arm mounting points. Or the design of the rear tralling arms.
Cheers