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Chevy/GMC Trucks \  S-10 4link

S-10 4link

Chevy/GMC Trucks Make Specific
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jeebus @ mmw   +1y
Originally posted by Layd2Rest



Originally posted by bdroppeddak



i would suggest the uppers to be 3-4" longer than the lowers if they are going to be triangulated.......thanks for the suggestion. can you explain why? im not very knowledgable in suspension and explination would help me out greatly.

thanks in advance.



Im not exactly sure why you would want the upper bars longer (eye to eye) than the lowers, but i do know you deffinentally want them to be as close to the same legnth as possible. The closer both the upper and lower bars are in legnth, the less pinion angly chance you will have, and some also say the ride is better.

If you mount your bars like this: |/\| , with the mounting legnth of the bars the same eye to eye, then you will achieve the least possible pinion angle chance.

Something like this : |^| with the upper bars being shorter eye to eye than the lowers, your axle will tend to roll more when the bags lift the vehicle.

And for what its worth, for what your building, i would suggest running a hand made 4-link kit, meaning cutting and fitting them in place when making and setting up the link, as opposed to buying a pre-made link setup, form SSD or elseware. That way, you can customise it to whatever legnth you need, and not have to take any chances with a pre-made. I made the links on my setup i have now, and it was much much better having all the parts seperate and cutting them to legnth for what i personally needed. Just a suggesgion.
whynotfab   +1y
"If you mount your bars like this: |/\| , with the mounting legnth of the bars the same eye to eye, then you will achieve the least possible pinion angle chance."

^ You answered your own question that you asked cris

The uppers being triangulated causes them to need to be just a little longer so they are able to be mounted at the same eye-to-eye distance.
wht01ranger   +1y
Originally posted by Chopped Mazda



Originally posted by Layd2Rest



Originally posted by bdroppeddak



i would suggest the uppers to be 3-4" longer than the lowers if they are going to be triangulated.......thanks for the suggestion. can you explain why? im not very knowledgable in suspension and explination would help me out greatly.

thanks in advance.

If you mount your bars like this: |/\| , with the mounting legnth of the bars the same eye to eye, then you will achieve the least possible pinion angle chance.



if you have them the same length eye to eye, say 26inches, the uppers will be shorter overall when looking at it from the top, because they are triangulated.

the uppers need to be longer than the lowers, to find the length you need, do some geometry. you'll need the lower bar length and upper bar triangulation angle

I.E. 23inch lower bars, 35degree triangulation angle

cosine(35degrees) = 23inches/upperbar length

upperbar length = 23inches/cosine(35degrees)

you get 28inches.

whynotfab   +1y
Originally posted by aftershock



Originally posted by Chopped Mazda



Originally posted by Layd2Rest



Originally posted by bdroppeddak



i would suggest the uppers to be 3-4" longer than the lowers if they are going to be triangulated.......thanks for the suggestion. can you explain why? im not very knowledgable in suspension and explination would help me out greatly.

thanks in advance.

If you mount your bars like this: |/\| , with the mounting legnth of the bars the same eye to eye, then you will achieve the least possible pinion angle chance.



if you have them the same length eye to eye, say 26inches, the uppers will be shorter overall when looking at it from the top, because they are triangulated.

the uppers need to be longer than the lowers, to find the length you need, do some geometry. you'll need the lower bar length and upper bar triangulation angle

I.E. 23inch lower bars, 35degree triangulation angle

cosine(35degrees) = 23inches/upperbar length

upperbar length = 23inches/cosine(35degrees)

you get 28inches.



Haha yea what he just said ^^^^
SoLow03   +1y
One reason why I want to go to school for chassis fabrication right here...
Chris
jeebus @ mmw   +1y
Edited: 4/2/2006 6:59:50 PM by Chopped Mazda

Originally posted by WhyNotFab



"If you mount your bars like this: |/\| , with the mounting legnth of the bars the same eye to eye, then you will achieve the least possible pinion angle chance."

^ You answered your own question that you asked cris

The uppers being triangulated causes them to need to be just a little longer so they are able to be mounted at the same eye-to-eye distance.

No. Because with what chris was stating, i was pictureing that he was going to have the EYE to EYE legnth of the 4-link, on a plain view, longer than the other two bars, like i illustrated in the picture i attatched , in the RED.

How i read his statement was that he was suggesting that the bars mounting location should be longer than the outer bars, which i couldnt understand any mechanical advantage.

Its common knowladge that you want your 4-link to have the closest possibly mounting legnts that you can.....not necessarily bar legnth, because thats stating something completely different. Bar legnth, to me would mean having the bars mounting location be further than the other two bars, in the end making the bars longer in legnth than the others.

I guess its all in how you viewed the statement....i guess i viewed what he was saying differently, we both ment the same thing...

regardless..... try to keep the bars mounting locations as close the the same legnth as possibly....and the longer the bars can be the better.
KEG Media   +1y
damn u guys are smart. thanks a ton!