cut springs


gaza4

gaza4

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Joined
Apr 17, 2010
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ok before everyone goes mental and starts shouting not too cut springs for whatever of the many reasons there is STOP!!!! :)) i know about all that stuff, this is slightly different...i think lol!!!!

right so i have tenzo r lowering springs on my SiR and the front is lowered perfectly but i find the rear to be still a bit high. on the rear springs the last few coils are very tight with almost no gap between them. what i'm thinkin is that if i cut out one coils and reduce the spring by bout 10mm, that would help lower the car a bit more and not affect the ride quality as the coils are tight and dont seem to do much anyway....

heres a pic of a spring with a similar design, see how the coils at the top are tightly wound???

gf210springs.jpg
 
The problem here is not the size of the gap but the total "lengh" of the spring. Imagine that your spring is now in a staight line, it will have "x" meters of lengh, if you try to twist it 10 degrees you will need some amount of force, know cut of some material and for the same 10m degreess you will need more force. That´s one of the things that happens when you cut a spring, you afect the spring rate. So, without shouting, don't do it.
 
gaza4 said:
that would help lower the car a bit more and not affect the ride quality as the coils are tight and dont seem to do much anyway....
Click to expand...

That is the progressive part of the spring you describe, designed to give you a soft ride in town. Cut it out and you will be left with the hard rate permenantly, and added to the effect Edu.T mentioned, you'll effectively ruin the handling and ride completely.

You'd think that when this idea continually crops up and people continually say not to do it, people would get the idea that is a bad thing... :angry2:
 
gaza4 said:
gf210springs.jpg
Click to expand...

Sorry pretty swamped here so cant go into big detail but basically this is a progressive spring, thats why the coils are tighter wound at the bottom.
Do not cut them, just buy springs with a lower spring rate so they sit lower, if you cut these tighter coils you will be taking away the springs preformance when under the top end of there load aka it's dangerous and will wreak your balance (as you'l be hard pushed to get them cut even).
 
thanks for the advice guys, i'm gonna just leave it...
tbh i thought those coils were just there to decided the height of the spring ie 50mm springs would have less coils than 30mm springs.
 
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