EK4civichatch

When I purchased my GC's about 4 year ago I remember reading that they were semi-progressive......
If this is true, would there be any real benefit from upgrading to fully linear ERS, with the same rates???
In additon, if I run ERS springs only in the rear, will having semi-progressive front springs hinder performance????

(This is a daily driven car, it is autox'd on a regular basis . Current setup is OTS rate GC's, Tokico Illumina, ST front sway bar, OEM SI rear sway.)

94eg!

iTrader: (2)

I remember hearing that too (long time ago), but I think it was just missinformation in a magazine. GC springs are linear (they are ERS springs), and have the spring rates printed right on them.

EK4civichatch

Thanks

vtecvoodoo

All linear tweaked for maximum travel (I do the designs).

Ryan

slateraptor

when measured from free length, i don't think a truely linear close-ended helical spring exists. that's why eibach measures their spring rates by first compressing the spring to 20% of it's usable length. perhaps this is where the term "semi-progressive" popped in...or would that be "semi-linear?"

verbatim, is it even possible for a helical spring to be semi-progressive? i can't picture it; it's either progressive, linear, poorly designed (making the spring unpredictably and/or unintentionally progressive)...or organic?! semi-progressive springs... sounds romulan to me

EDIT: sheiste...now i can't stop thinking about this. why should i care what hooke says...HE'S DEAD!!!


Modified by slateraptor at 2:03 PM 1/28/2005

Tyson

you can buy tender springs that are progressive to add to the normal ERS.

94eg!

iTrader: (2)

Also, adding a linear tender spring to your main spring will create a progressive rate (if your car can bind up the tender).

If you add a progressive tender to a linear spring, you could end up with a triple rate progressive system (if your car can completely bind up the tender).