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Author Topic: the problem with single adjustable shocks  (Read 1423 times)
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speedj
Fifth Gear
*****
Posts: 524



« on: February 11, 2008, 06:59:20 PM »

I've been having some difficulties getting used to my Koni adjustables.  I've had a couple of track days and have not yet been able to balance the car in the way that I'd hoped.

The problem for single adjustable shocks is that the compression dampening is linked to the rebound dampening.  

In looking at other shocks I was told that the Tokico's dampening was heavily biased to compression, in other words when you turn up the dial you get more compression dampening than rebound dampening... which is a nice way to compensate for the low spring rate of a stock spring.

I've got higher spring rates than stock.   I chose the Koni's because they were supposed to have more of a rebound bias, (when you turn up the dial you get more rebound dampening than compression dampening)... which would be more appropriate for a higher spring rate.  Unfortunately I have not found this to be so... at least there's not enough rebound bias to make reasonable changes to cornering transitions to tune the car as you would with a double adjustable shock.  

What you want to start out with is a spring/shock package that roughly gives you as much compression dampening as it does rebound dampening. A neutral set-up that you can then alter to tune for your own style/handling needs.

When you go up in spring rate, then you'll need less compression and more rebound dampening to keep it balanced. I haven't been able to get there with the Koni's.  The shock dials in too much compression and not enough rebound to adequately effect the handling change that I was expecting.

I think that a better option will be to go for a fixed valved shock, something like a Spec Miata Bilstien -20%.  

Anyone want to buy some low mileage Koni's?
  
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Woofster
I love humanity. It's people I can't stand!
Fifth Gear
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Posts: 4758


2005 MSM Ti #1255


« Reply #1 on: February 11, 2008, 08:05:10 PM »

That's quite a sales pitch!  Stand back and wait for the offers to rebound in (with little to no compression dampening)! Smiley
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