cutting springs
01-31-2008, 04:44 PM
#31
3.0 BAR
Join Date: Dec 2002
Posts: 9,203
Re: cutting springs
Originally Posted by ratcityrex
back in the day we would just get under the car and heat the springs with a torch untill we got the right ride hight. 
01-31-2008, 07:17 PM
#36
0.0 BAR
Join Date: Nov 2006
Posts: 0
Re: cutting springs
I don't get what the debate is here man.
You have a coil that has a specific resistance, if you cut off some coils it's going to reduce the material that is available to provide resistance, i.e. lower your spring rate, which is bad because it now requires less force to compress the spring.
This is going to transfer a lot more energy to your struts, which don't have enough dampening force to compensate, which in turn bottoms out on the bump stop = terrible *** ride and bump steer.
Cutting springs is bad because you are changing the resistance value of the spring, heat treating is also bad, but not as bad, because the cores of most quality springs are wound for strength, heating them makes the metal hot and pliable, which will unwind itself which in turn also lowers the resistance of the spring.
Don't cut your springs, and don't slam the car on stock dampners, like my car.
You have a coil that has a specific resistance, if you cut off some coils it's going to reduce the material that is available to provide resistance, i.e. lower your spring rate, which is bad because it now requires less force to compress the spring.
This is going to transfer a lot more energy to your struts, which don't have enough dampening force to compensate, which in turn bottoms out on the bump stop = terrible *** ride and bump steer.
Cutting springs is bad because you are changing the resistance value of the spring, heat treating is also bad, but not as bad, because the cores of most quality springs are wound for strength, heating them makes the metal hot and pliable, which will unwind itself which in turn also lowers the resistance of the spring.
Don't cut your springs, and don't slam the car on stock dampners, like my car.
01-31-2008, 07:40 PM
#39
0.0 BAR
Join Date: Oct 2005
Posts: 0
Re: cutting springs
Originally Posted by wafflesincars
I don't get what the debate is here man.
You have a coil that has a specific resistance, if you cut off some coils it's going to reduce the material that is available to provide resistance, i.e. lower your spring rate, which is bad because it now requires less force to compress the spring.
This is going to transfer a lot more energy to your struts, which don't have enough dampening force to compensate, which in turn bottoms out on the bump stop = terrible *** ride and bump steer.
Cutting springs is bad because you are changing the resistance value of the spring, heat treating is also bad, but not as bad, because the cores of most quality springs are wound for strength, heating them makes the metal hot and pliable, which will unwind itself which in turn also lowers the resistance of the spring.
Don't cut your springs, and don't slam the car on stock dampners, like my car.
You have a coil that has a specific resistance, if you cut off some coils it's going to reduce the material that is available to provide resistance, i.e. lower your spring rate, which is bad because it now requires less force to compress the spring.
This is going to transfer a lot more energy to your struts, which don't have enough dampening force to compensate, which in turn bottoms out on the bump stop = terrible *** ride and bump steer.
Cutting springs is bad because you are changing the resistance value of the spring, heat treating is also bad, but not as bad, because the cores of most quality springs are wound for strength, heating them makes the metal hot and pliable, which will unwind itself which in turn also lowers the resistance of the spring.
Don't cut your springs, and don't slam the car on stock dampners, like my car.
You have it *** backwards.
Do some number crunching.
http://www.stockcarproducts.com/pstech10.htm
01-31-2008, 07:46 PM
#40
0.0 BAR
Join Date: Nov 2006
Posts: 0
Re: cutting springs
Originally Posted by snm95ls
Where the hell did you learn about how coil springs work?
You have it *** backwards.
Do some number crunching.
http://www.stockcarproducts.com/pstech10.htm
You have it *** backwards.
Do some number crunching.
http://www.stockcarproducts.com/pstech10.htm
He isn't changing the diameter, nor is he increasing the range of the spring.
The resistance is based on the winding of the metal vs how many active coils there are. If he cuts off a set number of coils on a spring that has "x" resistance he isn't going to have the same spring rate, it's going to be lower.
