nitroperformance
+1y
How long can/should the bottom links be. I was thinking in my astro to take the bottom link and mount the front of the bottom link to where the front of the leaf spring is bolted and weld the back to the rear end. I just wanted to make sure the link woulnt be 2 long and would still be strong
JFcustoms
+1y
well try and make all the bars all the same length and on the same plane as each other and try and keep those top bars 40 degress off center to keep that rearend from swaying side to side BUT you can get away with not having your bars 40 degress off center however. in a lot of cases you might wanna look into just i wishbone top link cause their real easy to do and their real stable. Check my ranger profile
BioMax
+1y
4-linking in a small confine is tough. I don't have time to write a long explanation, so I will come back when I have a minute, I promise.
BioMax
+1y
There is no set length that 4-link bars should be. If they get too long (more than 48") they tend to stop transfering dynamic forces, but that is not a concern here. When building a link system that is limited to short bars, you just need to pay more attention to the instant center and that the bars need to be parrallel to the ground at HALF travel. Short bars move things around more in relation to how short the bars are. If you are talking about bars that are 24" long, there isn't much to be concerned about, but if the bars are only 8" long then you need to spend extra time figuring things out.
The instant center should be around the grille somewhere at half travel. That will give a very neutral design that works well lowered or lifted. If you have any more questions, let me know.
The instant center should be around the grille somewhere at half travel. That will give a very neutral design that works well lowered or lifted. If you have any more questions, let me know.
slammeddime
+1y
Max, you contradicted yourself a bit....
"the bars need to be parrallel to the ground at HALF travel"then"The instant center should be around the grille somewhere at half travel."
Its quite difficult to have both, unless there's something I'm missing.
As for half travel: I could see that being feasable in an over the axle scenario where there isn't much travel to begin with, but if Joe Shmoe gets 20" of lift, setting a system up at 10" would be unrealistic if Joe normally drove at 2-3", true?
"the bars need to be parrallel to the ground at HALF travel"then"The instant center should be around the grille somewhere at half travel."
Its quite difficult to have both, unless there's something I'm missing.
As for half travel: I could see that being feasable in an over the axle scenario where there isn't much travel to begin with, but if Joe Shmoe gets 20" of lift, setting a system up at 10" would be unrealistic if Joe normally drove at 2-3", true?
BioMax
+1y
Edited: 12/29/2006 10:19:12 AM by BioMax
Edited: 12/29/2006 10:18:51 AM by BioMax
Always trying to catch me with my pants down
If I gave every piece of info while posting on here I would never get to my own life. There is just way too much info to tell it all. If you set up the lower bar parallel to the ground at half travel and then make the upper bar follow the instant center you choose, it will be good for the most "quality" travel.
Originally posted by AirRideTalk dot com
As for half travel: I could see that being feasable in an over the axle scenario where there isn't much travel to begin with, but if Joe Shmoe gets 20" of lift, setting a system up at 10" would be unrealistic if Joe normally drove at 2-3", true?
Not necessarily. If Joe gets 20" of "USEABLE" (the key word here) travel then the bars should be long enough to not cause any problems, even if the truck was driven at only 3" off of the ground. the only real issue would be a small amout of roll-understeer. but, if joe was to squeeze 20" of travel into a system with only 12" long bars, there would be an issue. i am making most of my statements, based on the assumption that joe schmoe is building something within real-world confines. the old saying of squeezing 10 lbs of shit into a 5 lbs bag would be true here as well. be real and honest when building a system that you are going to drive every day. that 5 lb bag is going to make a big mess when the 10 lbs of shit comes out.
Edited: 12/29/2006 10:18:51 AM by BioMax
Always trying to catch me with my pants down
If I gave every piece of info while posting on here I would never get to my own life. There is just way too much info to tell it all. If you set up the lower bar parallel to the ground at half travel and then make the upper bar follow the instant center you choose, it will be good for the most "quality" travel.
Originally posted by AirRideTalk dot com
As for half travel: I could see that being feasable in an over the axle scenario where there isn't much travel to begin with, but if Joe Shmoe gets 20" of lift, setting a system up at 10" would be unrealistic if Joe normally drove at 2-3", true?
Not necessarily. If Joe gets 20" of "USEABLE" (the key word here) travel then the bars should be long enough to not cause any problems, even if the truck was driven at only 3" off of the ground. the only real issue would be a small amout of roll-understeer. but, if joe was to squeeze 20" of travel into a system with only 12" long bars, there would be an issue. i am making most of my statements, based on the assumption that joe schmoe is building something within real-world confines. the old saying of squeezing 10 lbs of shit into a 5 lbs bag would be true here as well. be real and honest when building a system that you are going to drive every day. that 5 lb bag is going to make a big mess when the 10 lbs of shit comes out.
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