Coil springs - Pirate4x4.Com : 4x4 and Off-Road Forum
 
Pirate4x4.Com : 4x4 and Off-Road Forum  

Go Back   Pirate4x4.Com : 4x4 and Off-Road Forum > Brand Specific Tech > Suzuki
Notices

Reply
 
Share Thread Tools Display Modes
Old 01-18-2008, 02:42 PM   #1 (permalink)
Registered User
 
Join Date: Apr 2005
Member # 45774
Location: Croatia, EUROPE
Posts: 71
Coil springs

I need help determing what springs would be stiffer. I have coil spring with 8 coil turns and it's got 11mm coil wire diameter. If I make a new coil with 12 coil turns and stick with the same coil wire diameter (11mm), shouldn't I get stiffer spring or do I need to make it from larger wire diameter??? HELP!!!
zenteren is offline   Reply With Quote
Old 01-18-2008, 03:12 PM   #2 (permalink)
Registered User
 
Join Date: Jun 2005
Member # 48335
Location: bc, canada
Posts: 410
more coils = longer spring = softer rate

less coils or thicker wire = stiffer rate, all else equel

think of it this way, more coil turns means more places that the weight can compress the spring, therefore, easier to compress. try bending a 4 inch piece of 25" rod - pretty hard. Now try bending a 6 foot piece - pretty easy. same concept.
phil_j is offline   Reply With Quote
Sponsored Links
Old 01-18-2008, 03:18 PM   #3 (permalink)
Registered User
 
Join Date: Jun 2005
Member # 48335
Location: bc, canada
Posts: 410
K = (Gd^4) / (8nD^3)

in other words


coil spring rate = ( material rigidity x wire diameter ^4 ) / ( 8 x number of coil wraps x coil diameter ^ 3 )

For a given material (G) you can see increasing wire diameter increases spring rate, and increasing mean diameter of the coil, or the number of coil wraps, decreases rate.

You're making your own coils? Cool. How? Or do you work at a spring shop...?
phil_j is offline   Reply With Quote
Old 01-19-2008, 04:39 AM   #4 (permalink)
Registered User
 
Join Date: Apr 2005
Member # 45774
Location: Croatia, EUROPE
Posts: 71
There are few spring shops in my place and they said I can get spring whatever I like. Now I am considering few options how to do it. I was using rear coils from 4 doors Sidekick on both ends, but zuk is rolling too much when cornering but the articulation is awesome. Now I want to make a spring to be somewhere in the middle of articulation and handling
zenteren is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 11:32 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 ©2011, Crawlability, Inc.