Deaver packs for a RANGER

[Justin]

Do you have experience with it?

I have the G50 (race) pack with the shackles and shackle hangers I posted above and I don't think they are too stiff.

Is that your truck in the pictures you posted? If so is sure does not look like the G50 pack.
Your truck will be pretty stiff with the race (g-50) pack if you dont have weight like a fuel cell and a spare in the back. And yes I have experience with both packs.

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[Brandon_Charley]

Is that your truck in the pictures you posted? If so is sure does not look like the G50 pack.
Your truck will be pretty stiff with the race (g-50) pack if you dont have weight like a fuel cell and a spare in the back. And yes I have experience with both packs.

Those pics are the Giant 64" kit.

[jgbjgb]

I have seen numerous posts saying the Deaver springs are "progressive" rate springs.

From Deavers' site:

The even, linear compression rate curve of our Progressive System spring is the primary key to excellent ride quality.

After doing some searching I found this:

Spring rates typically have units of N/mm (or lbf/in). An example of a linear spring rate is 500 lbf/in. For every inch the spring is compressed, it exerts 500 lbf. A non-linear spring rate is one for which the relation between the spring's compression and the force exerted cannot be fitted adequately to a linear model. For example, the first inch exerts 500 lbf force, the second inch exerts an additional 550 lbf (for a total of 1050 lbf), the third inch exerts another 600 lbf (for a total of 1650 lbf). In contrast a 500 lbf/in linear spring compressed to 3 inches will only exert 1500 lbf.

And this:

Longitudinal semi-elliptical springs used to be common and still are used on some US cars and on trucks. They have the advantage that the spring rate can easily be made progressive (non-linear)

Question:

If "non linear" is synonymous with "progressive" in reagrds to springs, how can the Deaver springs be both linear AND progressive?

[Scotty B]

That was a misprint that should have been changed a long time ago. Thank you for bringing that to my attention.

[Scotty B]

I suggest you start with the F31 prerunner pack that can still be run with the Camburg shackle and if in the future you add weight (fuel cell, extra sprare or a cage) the springs can be modified to the race design which carries more load.

[DKThree]

Can the F31 pack be used with the stock shackles or the stock ones flipped?

[Scotty B]

The spring can be used with either a stock shackle or an after market one. The spring is designed to be run with the shackle mount flipped from its stock position and should provide 2 1/2 inches of lift.

[Brandon_Charley]

Question: What makes the spring need to be run with a shackle flip, design wise? Is it just the lift it's built for? What would happen if you ran an extended shackle mounted in the stock location with the axle over the spring?

Seems like shackle over(Toyota style) seems to work a bit better (comparing 62s to 64s), and spring under has less axle wrap.

[brandon1026]

Yes ive had experience with the g50 pack and they were to stiff with out weight int he back. If you have dual spares and cage is still a little stiff but runs good. But if he doesn't want a cage and just putting one spare i think it would be stiff, personal preference i guess.

[Tim_Price]

On my Penhall-built 4x4, caged, no fuel cell, the F31 was WAY too soft. The rear end hung low. Yet the G50 would have required new hangers. So I had my ancient Nationals(?) re-arched and put back in place. Oh how I wish that Deaver option between the F31 and G50 still existed. (hint, hint, hint...)