Join Date: Jun 2001
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Re: Wasted time - new leaf springs
It's hard to tell from the picture, but it looks to me like you have a double cardon joint at the T-case, and also have some angle at the pinion yoke. Correct me if I'm wrong here. The angle at the T-case doesn't look all that bad from my perspective, but the photo angle may be throwing me off.
If that's the case, that may be the source of at least some of your vibration. The DC joint cancels out the fluctuation in velocity that would normally create vibration - causing the shaft to turn at near constant velocity. But, if you have an angle on the end with the single joint, you're re-creating these fluctuations in the pinion.
I would start by shimming up the axle so that there is no angle at the pinion yoke. I'm not sure it's enough to cause a vibration at 10MPH, but you definately have a geometry problem, and I think it would be worth correcting the angles and trying it before you take everything back apart.
If you haven't already, check out Tom Wood's geometry page at <a target="_blank" href=http://www.4xshaft.com/techinfo.html>http://www.4xshaft.com/techinfo.html</a>