rear a arm idea?

[mini929honda]

hay guys, i need some input on this idea for the rear of the car that im working on.Its not mc powered but vw. there is going to be more xbracing on the lower arm.

[Gene]

Looks workable to me. HAve you measured camber change through the full cycle and what is it?

[bdkw1]

Looks good.

[yoshi]

Inner cv isn't inline with the upper and lower a-arm mounts, so you may have some cycling issues, but other than that it looks good to me too...........

[bdkw1]

Originally Posted by yoshi

Inner cv isn't inline with the upper and lower a-arm mounts, so you may have some cycling issues, but other than that it looks good to me too...........

It's going to make a little plunge, but it will still be far far less that what a trailing arm sees. With the long splines on the axles you could still run non-plunging CV's on this.

[K-fab]

Yup, BDK nails another one.

[arrowhead]

Sorry but you will have a lot of axle plunge which means if the spline will handle it the drive and driven flange will have to have a deep pocket to handle the axle ends and it will also raise hell with the cv boots,
Also it looks like your lower arms have rod ends at both ends which means that those lower bars must be X braced and locked together or you will wind the whole works up the first time you let the clutch out or the other alternative would be to install two bars forward then they would be ok as is
I would really think you should consider moving those inner pivot points so they are directly inline with the inner cv
I just spent some time correcting a rail that had this exact problem
Good Luck

[bdkw1]

Ahem, did you read the first post?

Originally Posted by mini929honda

there is going to be more xbracing on the lower arm.

There will be less than an inch of plunge with that set-up. Compared to a trailing arm with 3" of plunge, I don't see the problem.....

[anasasisxenophontis]

Ok so, I'm trying to understand this... You're just looking at the picture and judging movement from what you see, right? I can tell that there might be some plunge in the CV...I assume that is because the inner CV isn't in-line with the A-arm inner pivots. Also, what is a cycling issue? And with the camber measurement, is that going to change because the upper A-arm is shorter than the bottom? Forgive me if I ask a bunch...just making sure I understand the suspension geometry here. I know it could be a disaster if it isn't set up right, and a wreck to fix if not designed right...

[bdkw1]

Originally Posted by anasasisxenophontis

Ok so, I'm trying to understand this... You're just looking at the picture and judging movement from what you see, right? yes

I can tell that there might be some plunge in the CV...I assume that is because the inner CV isn't in-line with the A-arm inner pivots. yes

Also, what is a cycling issue? none

And with the camber measurement, is that going to change because the lover A-arm is shorter than the top? the lower is longer

Forgive me if I ask a bunch...just making sure I understand the suspension geometry here. I know it could be a disaster if it isn't set up right, and a wreck to fix if not designed right...

Hope this helps.