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Adjustable endlinks - adjustment question

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Old 02-24-2009 | 02:33 PM
  #51  
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dude, i think you just need to get off of his ***** and move on.
Old 02-24-2009 | 02:41 PM
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Whose "*****"? I was addressing Zelse's question.
Old 02-24-2009 | 03:28 PM
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lol he's helping me out...well..sorta helping me out. :P

So again, my thoughts are this judging by what everyone is telling me..the endlink needs to go 90 degrees upward. That being said, to answer Ray's question..it's adjustable so that when you move the bar upward...with the arm facing more up..obviously you need to do more height adjustment so the endlink can reach out that far. Am I correct?

If anyone missed it, I'm running with Progress Technology Sway bars (2 holes in rear, 3 in front) with Evo-R adjustable endlinks in front and rear, with Stance Coilovers with a light drop..not too conservative..not too aggressive. Just right. :D

Last edited by Zelse; 02-24-2009 at 03:40 PM.
Old 02-24-2009 | 06:24 PM
  #54  
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Adjustable end links are needed when alterations to the stock suspension change the ride height..or changes to the bar itself change the length or position of the pivot

If you make the links longer or shorter..it doesn't change the pressure on the sway bar...it will just change the angle that the bar tip will rest at...so unless it binds on something it will not impart forces

What people seem to forget here is that the sway is supposed to be set up at zero pre-load so to speak..ie until there is lateral transfer of weight and body roll..they do nothing
Otherwise you are increasing spring rate....much better done with springs
Old 02-24-2009 | 07:30 PM
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Just for info ...if you have an adjustable bar with 3 holes...that gives you 5 different stiffness adjustments..there is no need for both sides to be in the same hole

hole 1-hole 1
hole 1-hole 2
hole 2-hole 2
hole 2- hole3
hole 3-hole 3

Cheers
Old 02-25-2009 | 12:00 AM
  #56  
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Originally Posted by dannobre
Just for info ...if you have an adjustable bar with 3 holes...that gives you 5 different stiffness adjustments..there is no need for both sides to be in the same hole

hole 1-hole 1
hole 1-hole 2
hole 2-hole 2
hole 2- hole3
hole 3-hole 3

Cheers
actually its:

hole 1-hole 1
hole 1-hole 2
hole 1-hole 3
hole 2-hole 2
hole 3-hole 3

because technically hole2- hole3 are the same thing reversed as hole1-hole2
Old 02-25-2009 | 12:05 AM
  #57  
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Originally Posted by dannobre
Length of the links makes little to no difference in the stiffness of the bars....it is the lenght of the pivot arm that determines that
yes.

beers
Old 02-25-2009 | 09:53 AM
  #58  
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Originally Posted by G3tR3DDY2GR3DDY
actually its:

hole 1-hole 1
hole 1-hole 2
hole 1-hole 3
hole 2-hole 2
hole 3-hole 3

because technically hole2- hole3 are the same thing reversed as hole1-hole2
Well...Hole 1-3 is an option...but

1-2 is not the same as 2-3 1-2 is between 1-1 and 2-2 2-3 is between 2-2 and 3-3
Usually the 1-3 option isn't different than 2-2..except what it does to the endlink alignment
Old 02-25-2009 | 10:02 AM
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Originally Posted by Charles R. Hill
In order for the most efficient movement (what little there is) and accurate setting the end-link SHOULD be at a right-angle to the axis of the swaybar. However, here is a fundamental question;

Why were adjustable end-links invented in the first place? Once we understand the answer to that question the rest becomes obvious.
Alright, I'll give this my best shot. (I am not preaching these answers and I am not overly mechanically inclined, but this is what I found out from a little bit of research + common sense)

IMO, adjustable endlinks were made for adjustable coilovers. If you adjust your coilover height, you can adjust your endlinks to ensure the sway bar is aligned properly.

Along the same lines, even for non-adjustable coilovers / springs, there are various heights out there and a fixed endlink can't accommodate all of them, plus the fact that having different endlinks for each height is impractical.

And third, adjustable endlinks would allow you to put different tension on each side of the car, which you may want to do in certain situations such as compensating for offset weight on one side of the car.

Originally Posted by Charles R. Hill
Even better, when we get inside the heads of the OEM suspension design teams we can remember that they have INFINTE end-link length at their disposal when they design the swaybar/end-link system so we must also ask; how do they determine the "proper" length for the end-links and what are they parameters they must take into consideration?
This I have no answer for but eagerly await a response

Originally Posted by Charles R. Hill
I don't wish to simply bloviate my opinion, I want to teach all of you what I learned with Ford for 8 years and show you how to assess things for yourselves.
Old 03-02-2009 | 09:38 PM
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Originally Posted by Fluid Motorsports
In Relation to the Front Sway Bar you want to keep the bar Horizontal(Completely level with the Ground, so adjusting the bolts height so that depending on your ride height making it shorter in length to pull the bar to a horizontal position.

Let me know if that helps or have any other questions.

Upgraded TSB?..
There's a TSB for to replace the stock endlinks. Had mine replaced without question even with aftermarket bars, springs, and shocks. But the newer version failed as well and started clunking again. That's why I went to the strong AP endlinks. The TSB is on the Finish Line site.
Old 03-02-2009 | 10:58 PM
  #61  
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^+11111111111111 AP Endlinks FTMFW!!!
Old 03-02-2009 | 11:22 PM
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I have the AP endlinks for the front. The spherical bearings are exposed to the weather. Because my car is a daily driver, I will be replacing them with something that has a covered bearing surface like the ones that are sold by evo-r.
Old 03-03-2009 | 04:39 AM
  #63  
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^Thats a good point. In Vegas we are lucky if we get 2" of rain in one year lol dust is another factor.
Old 03-03-2009 | 06:59 AM
  #64  
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Originally Posted by alnielsen
I have the AP endlinks for the front. The spherical bearings are exposed to the weather. Because my car is a daily driver, I will be replacing them with something that has a covered bearing surface like the ones that are sold by evo-r.
What can be done to keep the exposed spherical bearings clean? Obviously light oil or lubricant is bad because it will attract dust.
Old 03-03-2009 | 07:19 AM
  #65  
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^Well you can check out homedepot for some thing to wrap them in
Old 03-03-2009 | 08:00 AM
  #66  
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I am more worried about salt corrosion.
Old 03-03-2009 | 11:47 AM
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Because of all this:
Originally Posted by alnielsen
You can put the lower control arm on jack stands. That loads the spring to give you the proper angle. Also, if the angle of the swaybar ends are adjusted too high, they can bounce against the OEM brake line causing it to fracture and loose fluid.
Originally Posted by justjim
I would imagine that the best endlink length is that which places the endlink at 90 degrees to the line extending from the attachment hole to the center of the cross-section of the main cross bar when the suspension is loaded at rest (i.e. on the ground).
So - I have the stock suspension / ride height and want to get the Progress Tech bars. I'm assuming that the OEM endlinks are the proper length to use while on the OEM suspension? (concerns about durability aside) My reading so far suggests that if they are installed properly (not upside down) and I'm not doing any serious track driving or anything, the OEM links should be fine. My question is, with the stock ride height, the PT bars should work with the OEM links at around the ideal 90-degree angle?

Also - if this is the case, then there's no need to pre-load everything while setting the bars up? It seems to me that pre-loading is only necessary in order to determine the proper adjustments if using modified springs + adjustable end links. Is that...right?

Thanks guys....

Last edited by elysium19; 03-03-2009 at 11:49 AM.
Old 03-03-2009 | 12:15 PM
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Preloading a sway bar would only be done if you had a specific reason to have a different roll resistance on one side or the other, say if you were fine tuning a track car for a particular problematic corner.

You could also use it to offset the drivers weight but that would be best dealt with in the spring rates not the sway bar. Adjustable endlinks primary purpose is not for preloading, its just for getting the length right for different cars and bars. Generally the left should be the same as the right except for the situations outlined above. You should be OK with the OEM endlinks, reliabiltiy notwithstanding.
Old 03-03-2009 | 12:46 PM
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Originally Posted by Charles R. Hill
when we get inside the heads of the OEM suspension design teams we can remember that they have INFINTE end-link length at their disposal when they design the swaybar/end-link system so we must also ask; how do they determine the "proper" length for the end-links and what are they parameters they must take into consideration?
I'll throw in my $0.02 on sway bar design constraints:

1)Cost-The cheaper you can make it to meet the design criteria the cheaper you can sell the car at the same profit =sell more units or higher profit at a higher cost. What this translates to is the cost of the material and cost of manufacture. I'm not sure if hollow bars are cheaper but I suspect not. So to get the required stiffness and handle the load cycles I need to trade off material cost with manufacturing cost and packaging constraints and weight. If I could make a big enough bar diameter I could make it out of pine wood really cheap. It probably wouldn't fit in the front of the car but hey, it would be cheap.

2)Performance-I need to support a pre-determined stiffness ratio and load cycle. I need to select materials and adjust the design to support a calculated amount of flex (inches per pound) This allows me to play with the stiffness of the material and blade length while being constrained by room in the wheel well and durability of the material to handle X thousands of cycles without deforming or failing. It drives material selection, lever arm length, diameter, hollow, solid, filled with peanut butter, etc.

3)Packaging - I have to fit it in to the wheel well and attach it to the frame allowing for full range of motion of the suspension over bumps without hitting anything or otherwise negatively affecting the ride quality or performance. This affects how big a bar diameter I have room for as well as how long I need to make my blade and finally where I can attach my endlinks so I don't hit anything. So my endlink length would be a byproduct of my range of motion requirements and packaging requirements. I need to make sure I can swing the bar through the full range of motion without hitting anything or adversely affecting ride quality and performance.

that's what I "Think."
Old 03-03-2009 | 01:25 PM
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Originally Posted by justjim
Preloading a sway bar would only be done if you had a specific reason to have a different roll resistance on one side or the other, say if you were fine tuning a track car for a particular problematic corner.

You could also use it to offset the drivers weight but that would be best dealt with in the spring rates not the sway bar. Adjustable endlinks primary purpose is not for preloading, its just for getting the length right for different cars and bars. Generally the left should be the same as the right except for the situations outlined above. You should be OK with the OEM endlinks, reliabiltiy notwithstanding.
I don't believe there is such a thing as preload on a swaybay. The only way this could be achieved is if it was fixed in the center and each end moved independently. A swaybar by design if one side moves up, the other side is pushed down because it piviots. If on an adjustable bar, you had a non-symmetrical endlink position, it would be the equivilent of the average of the two endlink connection points.
Old 03-03-2009 | 01:27 PM
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What if you shorten only ONE end-link via the adjustable end-links?
Old 03-03-2009 | 01:39 PM
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Then you would have a preload. Why would you do that? I was assuming the endlinks would be equal length.
Old 03-03-2009 | 01:50 PM
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I am trying to engage in a general exercise using THIS particular concept as an example of something. What we all learn will then be able to be applied to the rest of the aftermarket industry and yet another curtain will be pulled back and various mysteries, secrets, and falsehoods will be exposed.

BTW, there are racecars that use preload via the swaybars and that concept may apply to the OEMs as well. I am not sure, though.
Old 03-03-2009 | 01:52 PM
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Originally Posted by alnielsen
I don't believe there is such a thing as preload on a swaybay. The only way this could be achieved is if it was fixed in the center and each end moved independently. A swaybar by design if one side moves up, the other side is pushed down because it piviots. If on an adjustable bar, you had a non-symmetrical endlink position, it would be the equivilent of the average of the two endlink connection points.
I disagree. I'm not advocating the use of preload on sway bars, but it does exist. To use an extreme example if you have very long endlink on one side and a very short one on the other you will have to push very hard on the bar to connect them because you are putting a twist in the bar when the suspension is at rest just to get the endlinks connected. This will cause the car to list to one side (the side with the shorter link will be lower) because the torsion of the sway bar will have compressed the spring on the short endlink side when you forcefully lifted the sway bar to install the extra long endlink.
Old 03-03-2009 | 02:10 PM
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Originally Posted by G3tR3DDY2GR3DDY
actually its:

hole 1-hole 1
hole 1-hole 2
hole 1-hole 3
hole 2-hole 2
hole 3-hole 3

because technically hole2- hole3 are the same thing reversed as hole1-hole2
well..

All I want is a whole in one so I can beat Tiger Woods.

Is that possible to set up on the 8?














mu ha ha...................


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