Gaz Gold Coilovers - spring rates advice

[Yarko]

Hello

I just bought a GAZ Gold Coilovers and I have a question about spring rates.
What spring rates could you recommend for daily and track day use 50/50.
In stock they are coming with 275lbs front and 250lbs rear.

Thanks in advance

Regards

 

[Little_tortilia_boy]

i have the same question...could someone give an answer?

 

[ripp]

same here

 

[aterro]

That's more than adequate.

I used to run 300lb front springs for daily mind!

 

[ripp]

bump on this
I found this thread http://www.cliosport.net/forum/show...s-Aftermarket/page2&highlight=cup+spring+rate
and based on it the rears should be way stiffer than the fronts because of the rear beam construction.
The gaz ones are 275 lbs/in front and 250lbs/in rear as mentioned
Can anyone explain?

 

[Willo]

As I understand it springs are rated to the dampers so will vary from manufacturer but im no expert by a long shot

 

[Kelv]

are the rears on these actually a coilover unit, or an independent shock and spring?

 

[ripp]

independent shock and spring, like standard

 

[NorthloopCup]

independent shock and spring, like standard

The reason why the rears would need to be stiffer than the fronts is due to the motion ratio. The original rear spring position is a lever with a ratio of around 2:1, so the 250lb rear springs are actually only 125lb as that's what the wheel see's due to this lever ratio. If it's a coilover rear unit like a set of Ast sportline 2's the motion ratio becomes 1:1 so if that was fitted with a 250lb spring, the wheel would see the full amount.

Does that answer your question or have I misunderstood?

 

[ripp]

I understand how the suspension works, but what I don't is why Gaz for example gave their spring rates in one manner and renault in a different manner. I was curious how stiffer are the gaz springs compared to std cup springs and can't tell from what I've found so far
As I said, GAZ springs are labeled 275lbs/in font and 250 lbs/in rear
Renault says front cup springs 3,19daNM/mm front and 5,65 daNM/mm rear
Based on these two statements I can't make a comparison of which springs are stiffer because it looks like they were measured in different ways

 

[Kelv]

just find an online tool for transferring NM to LBS.
unless im misunderstanding how you have written those figures.

 

[ripp]

I written those as I found them around here.
So 275 lbs/in is about 5kg/mm-front
250 lbs/in is approx 4,5kg/mm-rear
as for the renault quotes:
3,19 daNM/mm is about 3,25kg/mm-front
5,65 daNM/mm is about 5,7kg/mm-rear
So this is where thigs go blurry, cup rear springs being WAY stiffer that Gaz rear springs??