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985 Views 16 Replies 9 Participants Last post by  R_Rated
I know that springs have been covered ALOT in here. I have researched every spring topic and still cannot get the answer that I am looking for. That's where you experts come in. Ok here is the deal.... the manufacturer designs the springs with the shocks (so they work well together) i.e. proper height for the spring when no load is on the car...also they calibrate the spring with partial and full loads as well. (you guys already know this) These two parts(springs and shocks) work together because of how the designers fabricate them. If you change the springs (I am looking into the TME) and the ride height is lets say 1/2 inch drop all the way around. What is keeping those "stock shocks) from being ruined or damaged because of the "ORIGINAL" set up being altered.????? I would think if the "stock" springs are at a certain height and then you lower them 1/2 inch that the shocks are now "at rest" alot lower than stock, I would think if the shock is not designed to "rest" at this height that it would put alot of "stress" on those shocks because they are being compressed at a different rate than they were designed to be. Would'nt that be the reason that the dealer will not warranty "different springs" All help is much appreciated. Hopefully this message is not to convaluted" Thanks Rick
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Ok, I am no spring and shock expert, so take my response with a grain of salt. However.....

If you were to simply cut down the stock springs to lower the car, I might agree with your logic. However, the TME springs are STIFFER than the stock springs. Remember, springs carry the primary weight of the car, not the shocks. The shocks are for damping. I would think that by running stiffer springs, the shocks would actually see LESS load. I believe that this is the reason that the 4C system is working better with stiffer springs...because the car is supported more by the springs, wheel movements would be transferring less force to the shocks. So since the shocks don't have to "stiffen up" as much, you have a better ride...and less side hop.

Also, I don't believe that a shock's damping is dependant on it's position. This is a regular shock, and I'm not sure how the 4C's work, but I would think that if it's changing the valving on the shock piston, than it would also be position independant. So as long as you're not running out of total travel on the shock piston, you shouldn't be wearing the shocks any more.

Now, I have NO idea where the shock piston is in relation to its travel, and whether you'll run out of travel or not with a deeper drop TME.

And yes, tracking will beat your car up more...but regardless of what springs you are running. It's just a function of the increased loads generated by accel / decel, etc.

That's just my $0.02.
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Re: (KVB)

Quote, originally posted by KVB »

Sorry, but you are very wrong. A stiffer spring rate does NOT = less suspension travel.

I think wieght has a factor in that.


Yes, weight does have a factor, in the form of force.

Remember, the equation for a spring is F=-k*x where F is force, k is the spring constant (stiffness) and x is the position of the mass on the end of the spring. By increasing the stiffness of the spring, you decrease the travel for a given force.

Therefore, for a given car encountering a given load, the stiffer spring will travel less.
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