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Author Topic: Leaf Spring Rate  (Read 1335 times)

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Leaf Spring Rate
« on: September 24, 2008, 11:08:58 AM »

I am going to be putting in a Dana 44 front axle in place of my stock Dana 30 - a few reasons but mostly because of the wider track width for stability to go taller and the larger ring\\pinion for my front locker.
 
What I am having trouble deciding is what springs I should run.  The stock CJ springs are only 2" wide and my current suspension setup is amazing up front...it has rate of 290lbs/in for the rate.  It flexes, rides and handles great...even with the 7" lift, 35s and highway driving.
 
Something I am having some trouble finding online is the free arch in relation to spring rate so I know what my compression\\drop will be.  So...for example a 4" vs 2" lift spring and how much compression\\droop I would get if they had the same spring rate.
 
Any help is VERY much appreciated.  Thanks in advance.
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Snotty

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Leaf Spring Rate
« Reply #1 on: September 24, 2008, 02:37:34 PM »

Great question, but I would suggest you ask this of a Jeep Forum.  They might/should have better expertise on 4WD than most people on this site.
 
That is not meant to put anyone down here.
 
You can find some Jeep Forums through the links provided on GremlinX.com.
 
Just a suggestion.  Good luck with your Jeep!
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Leaburn Patey

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Leaf Spring Rate
« Reply #2 on: September 24, 2008, 03:20:56 PM »

Hi! Anthony!!

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Steve

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Leaf Spring Rate
« Reply #3 on: September 24, 2008, 03:55:41 PM »

Quote from: Snotty
Great question, but I would suggest you ask this of a Jeep Forum.  They might/should have better expertise on 4WD than most people on this site.
 
That is not meant to put anyone down here.
 
You can find some Jeep Forums through the links provided on GremlinX.com.
 
 
Ahhh  Hey Snots. . .
 
He works for me  AND!  He gets better answers here than with those "damned Kids" on the Yeep Forum
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Bill Mounteer

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Leaf Spring Rate
« Reply #4 on: September 24, 2008, 06:22:23 PM »


Does this link help?

Note the page works with IE but for some reason not in FireFox

Fury4402008-09-24 23:31:16
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Bill Mounteer

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Leaf Spring Rate
« Reply #5 on: September 24, 2008, 06:53:26 PM »

Or if you like to play with the math, try this ..
uploads/25/Spring_Rate_Excel.jpg


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Matt Aker

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Leaf Spring Rate
« Reply #6 on: September 25, 2008, 05:00:59 AM »

So you want a low center of gravity with lots of spring travel...  Here's your answer
 
 

(The steering wheel being on the wrong side does not make it defective, just different )
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Matt

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Leaf Spring Rate
« Reply #7 on: September 25, 2008, 08:40:22 AM »

Quote from: MoparMatt
So you want a low center of gravity with lots of spring travel...  Here's your answer  
 
...
 
The steering wheel being on the wrong side does not make it defective, just different )
 
Matt you and I both know they don't have a whole lo of spring travel...then again, they don't need it as much with lockers front\\rear.
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Leaf Spring Rate
« Reply #8 on: September 25, 2008, 08:42:32 AM »

Quote from: Snotty
Great question, but I would suggest you ask this of a Jeep Forum.  They might/should have better expertise on 4WD than most people on this site.
 
That is not meant to put anyone down here.
 
You can find some Jeep Forums through the links provided on GremlinX.com.
 
 
Oh I know...and I am members of many of those forums.  The biggest problem with them is that unless you post regularly (I don't) your topic gets burried quickly...
 
EvulutioN2008-09-25 13:43:05
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Leaf Spring Rate
« Reply #9 on: September 25, 2008, 08:43:27 AM »

[/QUOTE]
 
GREAT! PAGE....
 
THANK YOU THANK YOU THANK YOU!
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Matt Aker

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Leaf Spring Rate
« Reply #10 on: September 25, 2008, 08:54:28 AM »

Quote from: EvulutioN
Quote from: MoparMatt
So you want a low center of gravity with lots of spring travel...  Here's your answer  
 
...
 
The steering wheel being on the wrong side does not make it defective, just different )
 
 
Those baby's got coils in the late '80s...  same axles though
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Steve

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Leaf Spring Rate
« Reply #11 on: September 25, 2008, 08:55:17 AM »

Call Alcan
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Leaf Spring Rate
« Reply #12 on: September 25, 2008, 09:20:59 AM »

[/QUOTE]
 
[/QUOTE]
 
Yes...they did but it doesnt mean they flex really well.  My CJ stock outflexed my buddy's rover :-p
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Matt Aker

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Leaf Spring Rate
« Reply #13 on: September 25, 2008, 10:30:34 AM »

weaker frame
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Matt

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Leaf Spring Rate
« Reply #14 on: September 25, 2008, 10:37:20 AM »

Quote from: MoparMatt
weaker frame
 
which rover vs  Jeep frame?
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