 Progressive springs.. here's the dirt!, Weltmeister 180s specifically |
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| bondo |
 Jun 5 2006, 05:38 PM
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#1
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Practicing my perpendicular parking  Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California  |
Ever wonder what the specifics of a progressive rate spring are? I did. They're sold as "180", but they're "progressive" so that can't be enough to go by.
The springs I tested are Weltmeister progressive 180s, and have a pretty clear wide coil spacing section, then a narrow one. They look to be pretty constant within each section. One of the springs is a touch longer than the other, which shows up in the graph. When lightly loaded they are about a 100 pound rate, and when heavily loaded, they are about a 160 pound rate. The transition happens at about 340 lbs of force and about 3.75" of compression. I'm using these for a V8 conversion, and since it'll be a street car, these will probably work quite nicely. Here's a graph: Attached image(s) 
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| Andyrew |
Jun 5 2006, 05:43 PM
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#2
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Spooling.... Please wait Group: Members Posts: 13,380 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California 
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Cool info!
Good to have some actual facts... I thought progressives were only made in 160 though.. |
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| bondo |
Jun 5 2006, 06:21 PM
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#3
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Practicing my perpendicular parking Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California |
QUOTE(Andyrew @ Jun 5 2006, 04:43 PM)  Cool info! Good to have some actual facts... I thought progressives were only made in 160 though.. Well I would call these 160, despite the SP180 that's printed on them. Close enough for me though. |
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bondo Progressive springs.. here's the dirt! Jun 5 2006, 05:38 PM
bondo |
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