HELP! Odd Noise
So two days ago I got on a like 5 or 6 hour ride with my buddies to vermont and back. Bikes running great until we are on the vermont highway or northway or whatever you want to call it and we get pulled over, I have a slight, but slow ride down the rumble strip. I thought I heard a weird noise but hey how offen do I ride down rumble strips, but now I am positive. When ever I pull away in first gear my bike seems to make a "clunking" sound that increases with speed, I can no longer hear it in second, but if I pull in the clutch and coast I can feel a vibration like there is a point in the chain that there is a problem. I figured maybe the chain had come loose and was slapping the swingarm so I tighted it. Did not work, rolled the bike real slow, found a spot in the chain where it tends to bind to the rear sprocket, so I tried adjusting the rear tire to make sure it was strait, however that didn't work either. I even tried pounding around the center of the rear sprocket thinking maybe that one side of the the whole unit thing had come loose from its housing in the wheel, so one side was no longer strait and that didn't work either. This is really really shitty, and the last thing I want to do is bring my bike to the local mechanic, it will take them at least 3 weeks to get it in, then charge me a fortune.