This is my first post so please bear with me. Tonight a friend of mine discovered the cause of the noise my '06 1100 v-star was making. The final drive couplling shaft to the u-joint at the engine end was sheared. The nut and washer were unattached to the shaft as it had sheared off. The bike was rideable, however it was making a loud noise as soon as you left off of the gas, once you gave it gas the noise went away. We will continue with the fix now that we know where the noise was coming from. Perhaps there is enough thread left on the shaft to reattach the nut without the washer. Has any one else experienced this issue. My bike only has 30,000 miles on it and has never been ridden hard.