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post #1 of 7 (permalink) Old 03-14-2006, 06:37 PM
Ninja350Z
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Which spring rate would be better for handling, i could care less about ride quality. 10/10 or 12/12 TIA
 
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post #2 of 7 (permalink) Old 03-14-2006, 10:17 PM
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I know this seems like a simple question that should have a simple answer... too bad it only seems that way.

Handling is combination of mechincal grip, ride height, spring rate, damper level, roll stiffness, roll center height... a ton of other things. There's just too much missing data to give you a straight answer.

If roads are smooth in your area 12/12 might produce the better handling. But if things are bumpy, then it is very possible the 10/10 is the way to go.

Sorry I can't be of more help.
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post #3 of 7 (permalink) Old 03-14-2006, 11:17 PM
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I agree, there is no clear cut answer to your question.

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post #4 of 7 (permalink) Old 03-15-2006, 12:37 AM
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As Ronin says, there are so many variables that suspension setup is a black art.

If your driving surface is smooth and grip levels are high then a stiffer setup will give you less weight transfer, if your surface is rough or low grip then a softer setup will give you more compliance and grip.

Ditto with the kind of corners. At high speed you want the car to roll a little more so it can put downward pressure on the outside tyres to improve grip while having the car break away progressively should you exceed grip levels - too stiff suspension makes the car skatey and when the tires do let go then it will be sudden and big.

By the same token, on a low speed, tight, twisty course you want the suspension stiffer so the initial response improves and on that course you're on your toes anyway.


It will also depend on your driving style. Some people like the car to be as darty as a go-kart regardless of speed, other people like being able to exploit weight transfer to improve grip at certain ends of the vehicle.

If you can give us a description of the kind of roads that you want to set the car up for, then people might be able to point you in the right direction.

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Understeer is when you hit the tree with the front wheel.
Oversteer is when you hit it with the back.
Horsepower is how hard you hit the tree...
Torque is how far you drag it...
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post #5 of 7 (permalink) Old 03-15-2006, 01:06 AM
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That said, if you're going to buy a set of coilovers primarily for street use I'd opt for finding a set with softer springs and shocks that let you adjust the compression damping.

Adjustable spring rate coilovers are hard to find, but with adjustable dampers you can always turn down the compression damping if you need more suspension compliance and turn it up when you need it stiffer.

Most shocks only adjust rebound, so make sure you look before you buy.

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Understeer is when you hit the tree with the front wheel.
Oversteer is when you hit it with the back.
Horsepower is how hard you hit the tree...
Torque is how far you drag it...
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post #6 of 7 (permalink) Old 03-15-2006, 08:16 PM
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post #7 of 7 (permalink) Old 03-19-2006, 06:43 PM
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exceptional handling need not be at the expense of ride quality - but as mentioned, there really is no way to answer your question as it's a function of many things
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