Frank Simonetti

[MasterSbilt_Racer]

I agree , I guess one could confidently say a suspension spring will never wear out , only thing is , do you think leaving a continuous load on a spring will eventually lower the spring rate with no cycles ?

If it's poorly designed, you are close to binding it, or it's heated enough, the coil spacing will be permanently altered. That will affect the rate.

[ZERO25]

How concerned should be be if the springs are losing their rebound rate? Sounds like average Joe couldnt test these springs and we're left to the manufacturers recommendations!

[MasterSbilt_Racer]

How concerned should be be if the springs are losing their rebound rate? Sounds like average Joe couldnt test these springs and we're left to the manufacturers recommendations!

As I've said, they cannot lose this magical "rebound rate" without losing other measurables. Taking the word of salesmen will always cost you money

[ZERO25]

Does Bubba Gale have the same credibility issues?

[MasterSbilt_Racer]

Does Bubba Gale have the same credibility issues?

If he's trying to dispute the laws of physics, yes. All the variables of frequency have been laid out from the first page.

[Lizardracing]

all springs have a cycle life , I will use a valve spring for example , I have had valve springs hold there specs for a long time , then all of a sudden they will drop like 20lbs seat pressure , after that , they drop rapidly , your talking about thousands and thousands of cycles here , it would take a bunch of races for a coil suspension spring to do this , unless poor manufacturing is involved .....

I'm imagining a suspension spring in place of a valve spring with a proportionate size.
A valve spring being around 2" tall and around 1.55 in diameter, scaled up a percentage to fit between the axle and frame. Say 500 percent?
If you also scaled up the valve, lifter, keepers, retainers, ect... including what it asked to do, basically a gigantic valve spring and the supplied the same Cycles/time/heat I think you'd find the same thing happening.

A spring is a spring....Valve springs just live much harder lives but they will both eventually suffer the same fatigue.

[fastford]

some valve springs hold there pressure but will break when cycled out , others just loose pressure , and loose it quick when cycled out , guess you will never really know what happens to a spring in the suspension case .