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TexasTodd
Dodge Dakota
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3/20/2007
04:34:05

Subject: Lets talk Shocks....
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I thought the true job of a shock, was to dampen the return of the sprung suspension. In other words, slow down the return of the suspension to the normal ride height.

Although I've used them for years, doesn't a gas charged shock work against this very dampening? It seems the dampening would wear out faster with a gas charged shock.
Sure, it raises the ride height slighlty, but also works against the dampening feature of a shock.

What do you think?



Kenkura
Dodge Dakota
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3/20/2007
06:16:32

RE: Lets talk Shocks....
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I dont think it works against the dampening... it just dampens faster than a fulid filled shock i belive, and provide more resistance iagainst the suspension in general thus stiffening it all together, but my bilsteins dampend much better than and fluid shock ever would... i have extremely small jounce and rebound, technically thou i belive a gas shock will wear faster gas molocules are smaller than fluid so its easyer for the gas to slowly seep out



Kowalski
GenIII
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3/20/2007
06:35:41

RE: Lets talk Shocks....
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Shocks are designed to provide both rebound AND compression damping. These features can be custom tailored (in more advanced shocks, like some of those used in motorcycles and racing) through adjustments in the shock valving. I believe the gas charge would be considered when they chose the compression valving in the design phase of production. NASCAR teams will have a shock specialist, whose job it is to tailor those damping rates to each individual track. Things like the spring rate of both the suspension and the tire are considered, as well as differences in the tracks. Different shock valve sizing is why many of us have found improved handling by replacing the stock rear shocks of our trucks, even though the stock shocks weren't worn out. The stock shocks (for gen 3 at least, from personal experience) just weren't well designed for the spring rate of an unladen truck.



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jjj
Dodge Dakota
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3/20/2007
14:44:22

RE: Lets talk Shocks....
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If I am not mistaken the main purpose of a gas charge is to prevent oil airation.



Manny
Dodge Dakota
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3/20/2007
19:34:10

RE: Lets talk Shocks....
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That's correct. The nitrogen charge keeps the hydrauluc fluid under pressure, which minimizes aeration (foaming) and cavitation of the fluid as it passes through the various orifices and such during shock operation. The benefit is that fluid without air bubbles in it keeps your shock working as designed, longer.




TexasTodd
Dodge Dakota
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3/21/2007
04:29:34

RE: Lets talk Shocks....
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So....

I thought stock, non charged shocks, only dampened while returning, or lengthening.

Well?



jjj
Dodge Dakota
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3/21/2007
07:34:36

RE: Lets talk Shocks....
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Shocks dampen in both directions. Though not nec. the same in both directions.
The rebound or jounce dampening can be different - ie. the old 90/10 shocks for racing of days gone by.



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