 Spring Identification, how's it done |
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| 76-914 |
 Mar 24 2013, 09:26 AM
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Repeat Offender & Resident Subaru Antagonist  Group: Members Posts: 13,870 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California 
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As revealed earlier, I don't know (IMG:style_emoticons/default/stromberg.gif) about suspension. I did know enough to listen to the pros and have taken Eric's set up advice. (guess who has new Bilsteins coming (IMG:style_emoticons/default/biggrin.gif) ) My question is this; how do I identify what I currently have? Is this done by the number of coils? Is it stamped somewhere? Color coded? Here is a shot of mine. And...what does 100,120,140lb represent? What happens at a given value? TIA, kent
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| Dave_Darling |
Mar 25 2013, 02:27 PM
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#2
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914 Idiot Group: Members Posts: 15,328 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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The rate is "pounds of force per inch of deflection". That suggests how you would test it:
Weights to put on the end of the spring, and a ruler to measure how far it compresses. Take measurements with different amounts of weight. lbs of weight / inches of compression == lb/in spring rate. ...Or you take them to a shop that has a spring tester, which does the same sort of thing with much more precision. --DD |
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| SirAndy |
Mar 25 2013, 05:47 PM
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#3
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Resident German Group: Admin Posts: 42,458 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(Dave_Darling @ Mar 25 2013, 01:27 PM)  Weights to put on the end of the spring, and a ruler to measure how far it compresses. Take measurements with different amounts of weight. lbs of weight / inches of compression == lb/in spring rate. (IMG:style_emoticons/default/agree.gif) Measure spring length at rest. Put a known weight on top of the spring. Measure difference in length. Plug the known weight (in lbs) and the difference in length (in inch) into the formula above, normalize to 1 inch and voila! (IMG:style_emoticons/default/smash.gif) |
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Posts in this topic
76-914 Spring Identification Mar 24 2013, 09:26 AM
McMark If my math is right, I think all the stock springs... Mar 24 2013, 10:48 AM Dave_Darling I think your math is wrong, McMark. Specifically,... Mar 24 2013, 11:38 AM 76-914 Hey guys, thx for the quick response but I guess y... Mar 25 2013, 08:07 AM ThinAir I'm wondering too about this. Since mine has n... Mar 25 2013, 02:06 PM McMark
Yup. I was wrong. Found a spring rate calculato... Mar 25 2013, 04:39 PM sixnotfour If those are KYB's it wont matter.. Mar 25 2013, 06:04 PM r_towle Spring ID for the simple minded.
Remove springs, ... Mar 25 2013, 06:06 PM
ThinAir
Spring ID for the simple minded.
Remove springs,... Mar 26 2013, 12:03 AM 76-914
[quote name='Dave_Darling' post='1840157' date='M... Mar 26 2013, 08:37 AM Dave_Darling All over. Performance Products, GPR, Pelican, AA.... Mar 26 2013, 06:38 PM 76-914 Pelican lists them as NLA as did GPR but I didn... Mar 27 2013, 07:55 AM ww914
Pelican lists them as NLA as did GPR but I didn... Mar 27 2013, 06:32 PM 76-914
Pelican lists them as NLA as did GPR but I didn... Mar 27 2013, 07:01 PM Elliot Cannon
[quote name='ww914' post='1841422' date='Mar 27 2... Mar 27 2013, 10:59 PM Elliot Cannon I bought 165 lb. progressive springs From Troutman... Mar 27 2013, 11:26 AM SLITS
I bought 165 lb. progressive springs From Troutma... Mar 27 2013, 05:28 PM rgalla9146
I bought 165 lb. progressive springs From Troutm... Mar 27 2013, 06:15 PM 76-914
[quote name='SLITS' post='1841391' date='Mar 27 2... Mar 27 2013, 07:18 PM Socalandy my Eibach 140's came from Pelican via Rebel Ra... Mar 27 2013, 05:03 PM 76-914 OK, I'm not done with this subject, yet. Just ... Apr 4 2013, 12:44 PM messix
OK, I'm not done with this subject, yet. Just... Apr 5 2013, 02:09 PM Chris H. Right behind you on this one...my car has KYB... Apr 4 2013, 03:39 PM 76-914
Right behind you on this one...my car has KYB... Apr 5 2013, 08:35 AM Chris H. Very good point. I'll check in with Eric once... Apr 5 2013, 09:34 AM struckn Me Too, Getting ready to do rear springs. I have a... Apr 5 2013, 01:45 PM 76-914
Very good point. I'll check in with Eric onc... Apr 5 2013, 05:22 PM r_towle
Very good point. I'll check in with Eric on... Apr 5 2013, 07:18 PM 76-914 Thx Rich, I ventured into an area unbeknownst to m... Apr 6 2013, 08:26 AM Dave_Darling Most of the aftermarket springs have a shorter fre... Apr 6 2013, 09:03 PM 76-914
Most of the aftermarket springs have a shorter fr... Apr 7 2013, 07:34 AM PCH Anyone know what spring strength 3 red dots signif... Sep 8 2019, 04:52 PM SirAndy
Anyone know what spring strength 3 red dots signi... Sep 8 2019, 05:17 PM PCH
Anyone know what spring strength 3 red dots sign... Sep 22 2019, 04:23 PM |
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