Linear (No progressive) springs
 

Hi,

I want to know which aftermarket springs are not progressive.

Some info about this subject : @Koji_Online
linear spring simply gives you a more direct feeling
http://www.ft86club.com/forums/showthread.php?t=9028

@Knightshade
Progressive springs are softer under light load, and firmer under hard load.
http://my.is/forums/f126/f-sport-acc...prings-440927/

Info about aftermarket springs on oem shocks :
http://www.ft86club.com/forums/showthread.php?t=22473

I have this list until now :

Progressive Springs Rates

Eibach Pro-Kit
http://performance-suspension.eibach.com/
Eibach Sportline
http://performance-suspension.eibach.com/
H&R Sport Spring
H&R Super Sport Springs
http://www.hrsprings.com/
Tein H-Tech
http://www.tein.com/
Tein S-Tech
http://www.tein.com/RaceComp Tarmac
http://www.racecompengineering.com/
RS*R Super Down SUS
http://rs-r.com/lowering-springs/
B&G S2 Sport Springs
http://www.b-gsuspension.com
Racecomp Tarmac to be confirmed
http://www.racecompengineering.com/

"Predominantly" Linear Springs Rates

Hotchkis Sport
http://www.hotchkis.net/
Racecomp Yellow
http://www.racecompengineering.com/
Mach V
http://www.machv.com/
Swift sport to be confirmed
http://www.swiftsprings.net/products-sport_springs.html
Tanabe GF210
http://www.tanabe-usa.com

Linear in front and progressive in rear

TRD

No idea :
ST Sport

I currently work on a list, i will share it with you soon guys.

update post 1

What about RCE Yellows

i don't know, am on it, am doing some research.
I think they don't specify it.

Tag - will be some good info!

I know a progressive spring is really horrible to pair with a stock shock. Will a linear spring cause the stock shock to blow quicker?

Probably less than a progressive spring, let the company engineers reply to this question in detail.

Maybe the guys from Race Comp can help here, Andrew? Can you tell if your spring are linear?

Some of the springs out there are only progressive just to take up some initial drop and be captive, then the rate is linear.

I'd be extremely surprised if you find any linear aftermarket springs which aren't custom made.

The easy option is coilovers, but that opens up a big can of worms in itself.

It's going to be difficult to make a spring that's completely linear, AND that lowers the car. If you just shorten up the spring and firm up the rate, then it won't be tight in the suspension at full droop. The result would be a spring that rattles every time the wheel drops into a hole.

To keep that from happening, you wind in some lower-rate coils that will be fully compressed (or "dead") when the car is at normal height. Then when the suspension goes to full droop, the spring will stay snug and won't rattle around. Some coilover suspension systems use a lighter-rate "helper" spring for the same purpose.

http://i6.photobucket.com/albums/y24...ingsstudio.jpg

As you can see above, our springs have close-wound coils for a bit, then wider-spaced coils for the bulk of the spring travel. The effective rate that the suspension will see under normal use is linear, but the spring is not uniformly wound. Most, if not all, the aftermarket springs I have seen for this car use that design.

I guess that's a long way of getting to the point that it's not so simple as saying a spring is "progressive" or "linear."

--Dan
Mach V

Our springs are linear at normal ride height. There is a progressive section that kind of acts as a helper/tender spring but we wanted them to be as linear as possible. :)

EDIT: wow, Mach V Dan answered around the same time in a little more detail. Well put.

- Andrew

Thanks Dan for the explanation. Where i can put your springs into my list finally :P ?

Thanks to confirm Andrew, i will put your springs into the linear list definitively.