New lr assembly

[Twenty-Five]

If all you have is a simple spring, you can set ride height load or extended load. The one you don't set is going to be whatever it comes out to with the spring you have. The above allows you to set them individually.

I'm struggling to wrap my head around this concept without being able to see it in action on a spring smasher. If I need 500 lbs of ride load at 19” and my ext length is 24” I can’t figure out how with one single spring I can adjust the 24” load number without changing the 19” number as well. What am I missing here?

[Krooser]

I'm afraid not

Darn......

[billetbirdcage]

Think using a pair of outside spring compressors (2 J looking threaded tools that hook on each side of the spring on the outside and can compress a spring).

Now picture your LR is almost all the way extended and you tighten up those compressors to take all the tension off the shock. You just reduced the extended load of the spring and not effected the ride height load. When you set the car down the compressors will basically not be doing anything or truthfully just fall off.

That's really crude but should give you the idea. Basically you're making the spring stop expanding at a certain length and thus no pressure or reduced pressure on the shocks coilover cones thus no/reduced pressure at the wheel/tire/shock ends.

[Twenty-Five]

Think using a pair of outside spring compressors (2 J looking threaded tools that hook on each side of the spring on the outside and can compress a spring).Now picture your LR is almost all the way extended and you tighten up those compressors to take all the tension off the shock. You just reduced the extended load of the spring and not effected the ride height load. When you set the car down the compressors will basically not be doing anything or truthfully just fall off.That's really crude but should give you the idea. Basically you're making the spring stop expanding at a certain length and thus no pressure or reduced pressure on the shocks coilover cones thus no/reduced pressure at the wheel/tire/shock ends.

So this seems like a great tuning option for classes that aren't allowed to stack springs. What are the drawbacks verse running a stack and lock out?

[billetbirdcage]

So this seems like a great tuning option for classes that aren't allowed to stack springs. What are the drawbacks verse running a stack and lock out?

It's not terribly different then a digressive stack (besides you are limited by what single spring rates are available), but you can get to zero open load easier with this deal.

The drawback is you need to use a single super soft tall spring, which they have a tendency to die fast and lose free height where the stack springs tend to keep their free hieght and rate better and are less stressed then that tall super soft spring.

It also may not be legal with a single spring rule as I would think many may have a preloader rule or diameter rule. Since most of the preloader's require a bigger diameter spring then 2.5" and use a 3.0 or larger spring to clear the loader's diameter on the shock. I don't really have a good reason why you would use this over a stack unless the rules forces you.

[crownman25]

I have never been fast in the slick with a super soft lr spring...

[dirtrace09]

As mentioned before, it is for setting your extended load to what you desire or need. It's a good concept that can be accomplished other ways also. This just makes things a bit cleaner.