Skyjacker 2/2.5 install questions

[homebrew]

Isn’t the point of progressive coils supposed to be the tight coils provide your street driving and the spaced ones provide your off-road travel( for lack of better words) just put the coils on the front of my Rubicon, the tight coils are completely compressed under the jeeps body weight+ winch.

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[Carlton]

In my experience, every brand of progressive rate springs has looked similar to this once installed. Despite the popularity of progressive rate coils, I prefer linear coils. I find them to ride smoother.

 

[Arterius2]

Isn’t the point of progressive coils supposed to be the tight coils provide your street driving and the spaced ones provide your off-road travel( for lack of better words) just put the coils on the front of my Rubicon, the tight coils are completely compressed under the jeeps body weight+ winch.

@Carlton
So what is the point of the dual rate coils if the tighter portion are essentially just a solid block of steel for on-road driving?

 

[Carlton]

@Carlton
So what is the point of the dual rate coils if the tighter portion are essentially just a solid block of steel for on-road driving?

The compressed section is the dead zone. It is only used during long travel/drop out. The section below that is the ride zone.

 

[Arterius2]

The compressed section is the dead zone. It is only used during long travel/drop out. The section below that is the ride zone.

Well that’s a little different than other explanations I’ve heard. What you’ve mentioned is true for suspension droop, I don’t question that.

I was told that the tighter portion of the spring provides a lower spring rate than the rest, so they compress first, and would give a plusher ride for smaller bumps, once the tighter sections are compressed, the 2nd portion gets compressed at a higher spring rate, hence why it’s called dual rate.

Now my issue is that the Jeep at rest already completely compressed the lower spring rate portion, that doesn’t sit right with me. Reason being that if 25% of your coil is basically “incompressible” then most of the compressive force act upon the other 75%, so less of the spring actually absorbs the energy and that would either give you a stiffer ride or introduce more stress to the metal. But then again, I’m only going off with what I’ve heard.

 

[Jerrybizzle]

Seems there should be some gap between the first rate coils. Do you also have an aftermarket bumper that’s pretty heavy or just the winch? That seems more compressed than they were designed for.

 

[word302]

Seems there should be some gap between the first rate coils. Do you also have an aftermarket bumper that’s pretty heavy or just the winch? That seems more compressed than they were designed for.

Nah that's likely as designed. Most dual rate coils are designed to be fully compressed on road. They are there specifically for the droop when off road.

 

[Arterius2]

Nah that's likely as designed. Most dual rate coils are designed to be fully compressed on road. They are there specifically for the droop when off road.

The spring compression animation showed in RK’s video don’t show the upper portion completely stacking together when compressed.

 

[Roky]

Here is rk triple rate springs fully drooped and fully compressed just as a reference.

 

[Arterius2]

Here is rk triple rate springs fully drooped and fully compressed just as a reference.

Pic for ride height?

 

[Roky]

Pic for ride height?

Hard to see in pic, but the top 3 or 4 coils are stacked.

 

[Carlton]

The spring compression animation showed in RK’s video don’t show the upper portion completely stacking together when compressed.

I've had three Rock Krawler lifts. 3.5 inch and 5.5 inch kits. Top coils were fully compressed. This is how they are meant to function.

 

[Arterius2]

Thanks @Roky

I've had three Rock Krawler lifts. 3.5 inch and 5.5 inch kits. Top coils were fully compressed. This is how they are meant to function.

Yea, looks like that is indeed the case! Thanks for clearing that up.

 

[Roky]

Thanks @Roky

Yea, looks like that is indeed the case! Thanks for clearing that up.

Sure, no problem

 

[word302]

The spring compression animation showed in RK’s video don’t show the upper portion completely stacking together when compressed.

Lol, watch it again. When he talks about the upper "dead zone", he refers to it being completely compressed on normal on-road driving.

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