Have a friend with an FTX Carnage 2.0 and he needs new springs as the standard ones are far too soft.
The aftermarket for these cars seems pretty non-existent so does anyone happen to know any other model springs that would fit?
Maybe someone here has the FTX and can help you out, but if not...
You need to know your spring rate, the diameter, and the uncompressed length, as well as the wire diameter. FTX does not list the spring rate, which would be helpful. But you can check your spring rate.
So basically, you set a weight on the spring and measure how much the spring compresses and plug those numbers into the formula. That tells you your spring rate.
L = weight
T = distance the spring compresses
Share the spring measurements and spring rate if you can get it.