Don-
I shoulda mentioned that I bought my Vixen new. I'm assuming they all
came with six shocks, but the dealer may have added two at the rear.
I'm currently running a couple of street Konis without springs at the
rear, ahead of the axle, with the racing shocks and springs behind the
axle, just to keep the same configuration. It would work without the
extra shocks, but there MAY be some issues with suspension twist, and
because the thing handles well I'm leaving it be.
-S.
Skip Gurnee wrote:
>
> Don-
> Couldn't get to look at Nitron; the ronchampion website refused
> connection and a search on "nitron" came up with a fertilizer company...
>
> I just dug down in the far depths of my storage shed, and came up with
> my OEM springs, the dimensions of which are as follows:
> Front - free length 14", coil dia. 3", wire dia. .405, 15 1/2 free
> coils.
> Rear - free length 13 1/2, coil dia. 3 1/2", wire dia. .440, 10 1/2 free
> coils.
> Both front and rear are flattened and ground on the ends.
> The Konis I was using are P/N 80R1786.
>
> Without getting into the formulas, if you have FEWER free coils, the
> spring is stiffer. The heavier the wire, the stiffer the spring. The
> larger the coil diameter, the softer the spring. You can see that there
> are several ways to create just the spring rate you're looking for by
> varying any of the parameters. If you're interested in the calculations,
> you can go to Fred Puhn's book "How to make your car handle", or
> similar.
>
> My Vixen came through with four springs and six shocks; two on each rear
> wheel, only one with a spring around it. I'm not sure that's optimum,
> but you can run two springs on each rear corner, just make them half as
> stiff as one would be. If you ran 6 identical springs, the car would be
> too stiff at the rear, which would cause fairly severe oversteer.
>
> I gotta clean that storage shed out....
> Best,
> Skip
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