Back in "the good old days", when Aussi rallies were called "Trials" the
tracks? were pretty rough. You needed soft springs to handle the really
rugged tracks we invariably encountered. Softish, long travel suspension
with high quality shockers such as you are running was best. Slightly
stiffer than standard front springs and stock rears wasn't a bad starting
point. Bitumen was strictly for transport sections so no need to adjust for
this.
----- Original Message -----
From: Greg Hodgkiss <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, 16 May 2000 0:03 AM
Subject: Re: Spring Rates
> hi,
> Just some basic thoughts re rally setup.
> Try & set up your roll stiffness characteristics using mainly your coil
> springs & minimise your roll bar sizes. (note that shocks have stuff all
> impact on roll stiffness as the velocity is too low)
> A stiff roll bar connects one side wheel to the other, hence on potholed
> rough dirt roads wheel hop/bounce etc. - therefore poor traction. You
> want the wheels to move independent of each other. What works well on the
> track does not work that well on the dirt.
> Another comment - if you look at the early works RWD rally cars in action
> you will notice a fairly low rear spring rate - a lot of movement under
> hard acceleraton - good traction?
>
> Greg Ho
>
>
> ----------
> > From: Ritchie Williams <[EMAIL PROTECTED]>
> > To: OZdat <[EMAIL PROTECTED]>
> > Subject: Spring Rates
> > Date: Tuesday, May 16, 2000 2:28 AM
> >
> > Does anyone out there have any experience on spring rates for use on a
> > Datsun 1600 for use in rallying?.
> >
> > I have a Datsun 1600 rally car which I use on both Tarmac & Gravel. The
> > car handles really well on Tarmac but some times seems a bit nervous &
> > struggles for traction on Gravel.
> >
> > My present suspension setting for both Gravel & Tarmac are:-
> >
> > Front
> > Springs - 200lb Lovell (adjustable ride height on threaded sleeve)
> > Shocks - Revalved Bilsteins
> > Rollbar - 22mm Whiteline
> >
> > Rear
> > Springs - 400lb (I have a spare set of 350lb springs) Lovell
> > Shocks - KYB rally
> > Rollbar - 19mm adjustable
> >
> >
> > Thanks for any advice
> >
> > --
> > Ritchie Williams
> >
> >
> >
>
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