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Custom Chassis - Drive Line - Suspension - Wheels and Tires - LOWERING or STANDARD Discuss anything related to Custom Dodge Ram Wheels, Tires, Brakes, Suspension Mods, Chassis Mods and Tuning, Towing options, Driveline, Differentials, Sway Bars, Lowering Springs, Strut Braces, etc.


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  #11  
Old 01-04-2014, 09:01 PM
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I guess I should have been more clear, you have to trim from the tighter wound end, not the loose pig tail end on the progressive coils. You're right that the progressive side is the tighter coil, thanks for the clarification to an obvious error. All I was trying to say is that you can't cut from the loose pig tail or the spring won't seat properly and you'll cause issues.
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Old 01-04-2014, 09:12 PM
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LOL,i sorta wondered about your post,as you had me scratching my head for a minute
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Old 01-04-2014, 10:05 PM
Hornet Hornet is offline
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This is my basic formula for cutting linear springs,ie:stock front coils.

Once i know how much lower i want to go,i turn that measurement into a percentage number,that i then use to cut the springs.

This is a generalization for illustration purposes,so i'm using easy to work with numbers.

Say the truck measures 40" to the wheelwell arch,and i want to lower it by 2".
2" is 5% of 40".
So i want to cut roughly 5% off the springs length.
Cutting springs isn't an exact science,so i usually measure the diameter of the spring,then multiply that diameter by 3.14 (pi) to get a rough measurement of each coil.
Then multiply that number by the number of coils to get the rough overall length of the spring.
Once i know the rough overall length of the spring,i then use my 5% number to determine how much length needs to be cut off the spring.

Like i said,cutting springs isn't an exact science,but this will usually get you fairly close on the first cut of a linear spring
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