[dwtaylorpdx]

Originally Posted by Frank Lee

Drive Shaft Harmonics

These guys explain where and when a multi-piece shaft is a good idea:

Two-Piece Driveshaft Technology - Rod and Custom Magazine

Then this guy did pretty much what I did with my old Chevy PU:

Two-piece to One-piece Driveshaft Swap

Good article, they are talking about the end effect after the harmonic resonance has peaked.

I think its probably a mission decision, and it hinges on the design of the vehicle. Your truck likely does not see speeds over 80 (often) and has a lot of travel so the longer drive line works fine, and is likely almost needed to get eh suspension travel. My BMW sees speeds well over 100 on track days and the diff and transmission stay in constant relationship cause I have IRS. I'm also rolling on short tires with 3.78 rear gears so I get some RPM in the drive-line.

I still wonder if the guibo might help as a different way to get around the natural wobble of a Ujoint or a CV joint in rotation. There are several small race cars that use them instead of CV's and they are all lower HP spec cars.

What do ya think?

Dave