One of the interesting things about 1600's is that swapping rubber front to rear doesn't alway give the results you'd expect. Modified IRS vehicles will wear the treads in such a way that it will only track well on the end they've been used to. It will amaze you how bad an otherwise good handling 1600 can feel after swapping tyres around.
The understeer and bounce sounds to me like spring rates are too soft in the front or even all round. A good handling 1600 will usually have a slightly stiffer spring rate in the front and with a Lseries engine a mid range stiffness stabiliser bar. A lot of variables here but that's a rough guide, oh and ride hide as close to level front & rear helps, if anything 1" nose down is about what they'll tolerate. regards Terry > thanks again guys.... > > hey in regards to tyre squirme i guess a tyre with a raised tread > pattern would suffer more from this than a tyre that is smoother. > > hence why the aus & nascar racers grind down their tyres so their almost > used up ? > > my front tyres are quite knobby looking (no their not dirt or rally > tyres) and the back ones are getting close to their use by > date.....maybe i should try swapping them front to rear > > i might try one run as is then swap them and see what their like.....at > least it wont cost me any money to do it & i might learn something ! > > cheers Jeff > > > Gday Jeff, > > One of the mechanisms by which a tyre generates cornering force is > conceptually similar to a spring. A spring produces a force depending on > its stiffness and how much it is stretched ie the stiffer the spring the > more force it produces for a given deflection. In the same way, one of > the parts a tyre creates cornering force depends on its "cornering > stiffness". This obviously depends on its construction etc, which you > cant do much about. But one way you can increase it (up to a point) is > by increasing tyre pressures, which have the effect of increasing the > sidewall stiffness. This is why you increase tyre pressures on road > tyres when going to track days, and why raceteams can use tyre > pressure changes between front and rear as one way to tune oversteer and > understeer balance. > > Andrew > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ ---------------------------------------------------------------------
