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  1. #1
    Join Date
    Feb 2020
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    2

    Default Eibach new progressive 5th coil spring?

    just seen eibach released a progressive 5th coil spring. With a 250lb primary spring rate to a 425 secondary rate overall 10in spring. Is something similar to what advanced does with there 5th coil build?
    Last edited by Zkessler16; 08-04-2020 at 11:00 PM.

  2. #2
    Join Date
    Jul 2009
    Posts
    1,221

    Default

    Quote Originally Posted by Zkessler16 View Post
    just seen eibach released a progressive 5th coil spring. With a 250lb primary spring rate to a 425 secondary rate overall 10in spring. Is something similar to what advanced does with there 5th coil build?
    nothing new here, afco has done this for years, and i believe advanced does a digressive deal, meaning softer rate as it gets compressed

    but if you can keep good notes and will do the work its another tool in the tool box, most have enough to do already so they don't work there

  3. #3
    Join Date
    May 2010
    Posts
    158

    Default

    Like Grt said, not new whatsoever.. this has been out for atleast 10 years, and they had other ones before..
    https://www.afcoracing.com/store.asp...th-Coil-Spring Not sure how much magical speed there is in the 5th coil area.. JMO

  4. #4
    Join Date
    May 2007
    Location
    Batavia, OH
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    10,843

    Default

    I'm still trying to figure out how progressive and digressive can both be right. My many tests of progressive systems have all been abysmal failures. I've honestly never run a digressive setup.
    Droop isn't the problem.

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  5. #5
    Join Date
    May 2010
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    158

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    Quote Originally Posted by MasterSbilt_Racer View Post
    I'm still trying to figure out how progressive and digressive can both be right. My many tests of progressive systems have all been abysmal failures. I've honestly never run a digressive setup.
    Well according to 20 year old chassis setup guide, stiffer 5th coil spring = more instant traction and softer 5th coil = more delayed traction... so obviously digressive spring = more traction ALL THE TIME

  6. #6
    Join Date
    Oct 2017
    Posts
    912

    Default

    Quote Originally Posted by Austin34471 View Post
    Well according to 20 year old chassis setup guide, stiffer 5th coil spring = more instant traction and softer 5th coil = more delayed traction... so obviously digressive spring = more traction ALL THE TIME
    Lol sounds like it's a must have, i agree with masters never had any luck with a progressive deal. In Any part of the racecar for that matter. To inconsistent and hard to tune

  7. #7
    Join Date
    May 2007
    Location
    Batavia, OH
    Posts
    10,843

    Default

    Quote Originally Posted by Austin34471 View Post
    Well according to 20 year old chassis setup guide, stiffer 5th coil spring = more instant traction and softer 5th coil = more delayed traction... so obviously digressive spring = more traction ALL THE TIME
    Sounds good! Do you have a used Penske dump? Take my money!
    Droop isn't the problem.

    Arizona Speedway-2. Ohio Valley-1
    East Bay-2. Lawrenceburg-2
    All-Tech-1. Florence-1
    Volusia-1. Portsmouth-1
    Jackson -4. I77 -1
    Mudlick -1
    Moler -2
    Atomic-2

  8. #8
    Join Date
    May 2007
    Location
    Port Royal PA
    Posts
    202

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    I'm having real good luck on a digressive set up. Its on a limited late model but it made night/day difference on this car.

  9. #9
    Join Date
    May 2009
    Posts
    1,319

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    How did you set that up?

    Quote Originally Posted by bullittwrench View Post
    I'm having real good luck on a digressive set up. Its on a limited late model but it made night/day difference on this car.

  10. #10

    Default

    I run Advanced's digressive setup. I'm still a little off on initial throttle up in the center of the corner but at exit it will hook up and never seems to quit pulling all the way down the straight. This is a crate motor car. I believe there's a lot of traction to be had in the fifth arm area people just don't look at. Hoping to get on a pull down rig this month and play with that.

  11. #11
    Join Date
    Oct 2016
    Posts
    23

    Default

    Quote Originally Posted by MasterSbilt_Racer View Post
    Sounds good! Do you have a used Penske dump? Take my money!
    I have like 5 of them

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