Suspension geometry question.

[SupermanIce-J]

Background:
I am asking this just to clear thoughts in my head. Say that a person had a cherokee with a 3-4 inch lift and already had adjustable upper and lower control arms. This person wants to make their lower control arm angle flatter or make the suspension to where it is not as harsh.

Would it be more beneficial to:
A.(EASY WAY) raise the lower link mounts on the the axle (for example: on a D30 raising the link mount to be even with the bottom of the tube.)

1. What would this do to the suspension geometry if the uppers stayed the same height?

2. What would this affect handling wise?

B.(MORE DIFFICULT WAY) Design a mid-arm 3/4 link?

1.Obviously this would probably be better be cause the person could design their own geometry for their purpose

2.The more expensive option.

[Magilla]

have you looked into it all? moving link mounts around can have good and bad repercussion. Moving the link mounts on the axle up increased the force exerted on it by a lot. I remember reading one dude on pirate who moved it up 3/4" it increased like 600 psi on the mount. Your best bet would be building mid arms.

Moving the link up will spin the axle pointing the pinion down unless you compensate up top. The geometry will not be the same but close.

[Ktmracer419]

go play with link calculators

its fun and you will learn a few things.

i raised my lower mounting points and its awesome, but i run a radius arm and it doesnt really matter where the links are mounted.

but less separation at the axle end will negatively effect your anti-squat, how much? im not sure. will it be noticeable? i'm not sure.


im doin a ballin midarm next.

might wanna do a 4 link with all rubber bushings too. my stock shortarms are super duper cushy at speed offroad.

[SupermanIce-J]

have you looked into it all?

I have heard raising the lower link mounts but i have never heard any feedback from the people that have done it on the stock geometry.

go play with link calculators

its fun and you will learn a few things.

I am going to get the stock measurments then play with it a lil bit.

but less separation at the axle end will negatively effect your anti-squat

which means there will be less anti squat which means on a hill climb it will unload more?? maybe i am totally confused on this.

Looks like I need to do some moar reading into this. But more input on the subject is appreciated because Ithink this could help some other people out too.

[Magilla]

id just do mid arms for the reasons i stated less stress on the link mounts

[SupermanIce-J]

Okay i am sure that this will be answered when i venture into the link calculator but what if the uppers are raised as much as the lowers???

I am trying to imagine why there would be more stress on the mounts but i just can't picture it.

Off to pirate I go in search of the thread you spoke of.

[Magilla]

when you start driving your axle twists with the tires, it all has to do with the centerline of the axle but i may be wrong

[Ktmracer419]

id just do mid arms for the reasons i stated less stress on the link mounts

on my 44 i raised my link mounts so they are flush with the axle tube

no ill effects, just more ground clearance

[Ktmracer419]

Okay i am sure that this will be answered when i venture into the link calculator but what if the uppers are raised as much as the lowers???

I am trying to imagine why there would be more stress on the mounts but i just can't picture it.

Off to pirate I go in search of the thread you spoke of.

if the uppers are raised just as much as the lowers you will have better as numbers (flatter control arms)

[XJLI]

might wanna do a 4 link with all rubber bushings too. my stock shortarms are super duper cushy at speed offroad.

factory 4 link w/ panhard, or true 4-link? if you have a true 4 link run all hard ends, c'mon guy.

[Ktmracer419]

factory 4 link w/ panhard, or true 4-link? if you have a true 4 link run all hard ends, c'mon guy.

don't worry, i know what im doing

and how the fuck will i even fit a triangulated 4 link under my shit with 3" of lift and a dookin ass 4.0 oil pan chillin there?

i cant even fit a truss that is 2.5" above my axle tube

[XJLI]

don't worry, i know what im doing

and how the fuck will i even fit a triangulated 4 link under my shit with 3" of lift and a dookin ass 4.0 oil pan chillin there?

i cant even fit a truss that is 2.5" above my axle tube

14" of lift duh.

[Ktmracer419]

my shit with 3" of lift

14" of lift duh.

does not compute