Originally Posted by ATTJ
I'm finally caught up to present on your build. Very nicely done. I have a couple questions if you don't mind. How did you come up with the placement for the frame side brackets? Did you design the geometry using a link calculator?
Roads? Where we're going we don't need roads!
the frame brackets themselves dictate alot of the geometry. all i had to do was pick a spot on the frame to mount them. i wanted them tucked close to the tires for ground clearance, not as short as a short arm and not as long as a long arm. the rear arms ended up a little shorter than I imagined, but they still work great.
the other factor is the duroflex joints. they do not like to me misaligned so the link mounts on the axles need to be perfectly in line with the frame side mounts. Unlike a johnny joint that can be misaligned during the build, which would complicate the decision on where to place the axle side mounts.
The vertical separation had to be determined. the truss on the rear diff was tall enough that I could place the links on top and the lowers could be on the centerline of the axle. the front was similar.
The front upper frame side mount had to be rotated 90 degrees from the way the poly per mount would have it installed. I decided to add that small link mount to accomplish that. that gave me some adjustability and some more vertical separation at the frame.
really if your using pre-made brackets there isnt alot you can do with the geometry.
that being said i trusted the guys in my jeep club whos shop i was doing the work with to lead me in the proper direction.
there is some adjustability in the rear uppers on the frame side if i felt the rear end was hopping around during hill climbs. and there was some adjustability in the front upper frame side until i choped off the lower corner of the mount for some added driveshaft clearance.
honestly, I did some research and came to the conclusion that I could use the calculator, but in the end the design would have to be fitted to the confines of the TJ frame/body.
I would like to put the numbers into the calculator, but the jeep does great offroad and i'm not one to fix a problem i dont have.