Re: Curious on why a drive shaft with 2 U-Joints
Hey Bob, I am not the biggest BMW expert so I went looking for the R75 images to have a look. If I found the right bike, it looks like the only pivot point is up at the trans on the R75 and the shaft housing is bolted to the final drive. The LT has 2 pivot points, one at the trans and the other just in front of the final drive with a torsion strut. Not being an engineer, I am not sure what benefits having 2 pivot points has other than the FD remains in a fixed rotational position as it moves up and down rather than rotating along with the wheel. I suspect it allows the entire drive train to remain more stable as the suspension is exercised. Lets see if I figured it out by others comments. There are many engineers on this site.
Sugar Hill, GA
2001 K1200LTI – Champagne (current ride) Lazy Susan
1998 R1100RT – Never should have sold it
1974 Yamaha TX 750 Twin. Omni Phase Balanced
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