l should have known better than trying to post this on JU. Oh well.

I'm going to a 4 link rear and 3 link w/ panhard front for my 98 TJ to replace the RE SA 4 1/2 lift I currently have with 60's on 37's I have everything but frame upper control arm mounts (waiting on BTF) for the project.

Playing with the 4 link calculator and the dimension of my current lift I get an anti-squat of 306% and a roll axis of 38 degrees Dose that sound right for a bolt on aftermarket lift?

The only measurement that throws me is "from the rear axle centerline". I'm assuming straight across to the axle centerline as opposed to following the angle of the control arm to a point equal to the axle centerline. Measuring either way still puts me in the 300% anti-squat area.

What I plan on building puts me around 80%. It jsut dosn't seem right that an aftermarket kit would be so high.

Something is not right... 300%+ AS.... 38 of roll... Um... Can you post pics of the calc (like a screen shot would help the most) or post the numbers you inputted

In case the pic no workie workie or I end up editing it due to a huge pic.....

Upper links frame end x=14, y=17, z=25.5
axle end x=0, y=13,z=23

Lower links frame end x=17, y=22, z=21
axle end x=3, y=20, z=14

I don't understand how the rest effects anti-squuat or if it even does but....

Wheelbase 95
tire dia. 36.25
tire rolling rad 17
vehicle cg 25.94
weight 5k
front 800lbs
rear 700lbs



http://www.imagestation.com/picture/sraid218/p026e3d5c7bbb9b682071dcd4b276e404/ec234d43.jpg

ttt for the other Tuesday afternoon crowd

The only measurement that throws me is "from the rear axle centerline". I'm assuming straight across to the axle centerline as opposed to following the angle of the control arm to a point equal to the axle centerline. Measuring either way still puts me in the 300% anti-squat area.

which measurement is this?

300% would work really poorly. Something doesnt look right. are the links really narrower at the axle end then the frame end on the lowers and uppers?

which measurement is this?

300% would work really poorly. Something doesnt look right. are the links really narrower at the axle end then the frame end on the lowers and uppers?


that measurement would be "x" upper and lower link measurements from the frame attachement points to the centerline of the axle.

Keith, basically this is a 98 TJ with a 4 1/2 RE short arm kit. I'm doing a suspension build and was curious what my rig specked out on the 4 link calculator with the Rubicon Express kit thats already on it to give me a sort of baseline. All the measurements should be the same as any other TJ with a RE 4 1/2" short arm kit. But 308% anti-squat wtf?

you would follow the angle of the link to the centerline of the axle.

300% may or may not be correct but I have been very unimpressed with the out of the box link kits by the big companies. How long are the links?