Can anyone explain why it is said that an offset d-shaft vibrates badly?
As long as the output shaft on the t-case is paralell with the input on the diff, it should make no diff to the d-shaft what dirrection it has to flex.
Is my reasoning out of line?
Please explain.
Thanks

I think it depends on how perfect the alignment of the flange on the rear diff is. While in theory there should be no issue, in reality the angle has to be pretty precise(within 2 degrees of each other, in both planes combined). However, I have heard off folks who say it isn't so bad. I am thinking of going to a centered driveline(toyota) then at a later date going to Toyota axles - one option would be a custom axle made of two IFS front drivelines - with a CV at each end, angles are no longer an issue.
Some one with a Toy rear axle want to chime in?
Dale, since you aren't commuting or even street legal, it should be a non issue for you.
BTW, I need to re - do the mounts on my GM alternator-to-VWTD adapter, and then we can go wheeling in the last unfrozen muck of the year. Keep in touch.
Erik

I'm running stock (centered) Sidekick rear under my Zuk with a stock FRONT driveshaft in the rear. At 60 mph I do not feel any strange vibrations. I was extra careful to get the two lines (t-case output and rear pinion) as perfectly parallel as I could in both the vertical and horizontal plane. But I only used my calibrated eyeball for measuring. Pics at the webshots link in my sig. Look for the Isuzamurai folders.