I am answering the same questions and concerns in two forums so in order to save typing here is a related post:
“Next time I extract I will show you a video of it hands off. It won't go anywhere, I promise. The oscillations you see are no different than what you would see if you could lift the cover off your cloths washer during the spin cycle. If you put a dab of chewing gum on a spinning top (essentially making it out of balance) if will make the same oscillations. There are two ways to handle a spinning mass that is unbalanced. You can either fight it and force it to revolve around a point that it doesn't want to or let it do its thing. One results in tremendous resistive forces and one results in zero resistive force.
LOL, I will tell you what happen with my finger and you can believe it or not. The day before we extracted we processed tomatoes. My wife dries the skins in the oven to be ground up for adding flavor to foods or making paste. I was trying to wipe the dried skins off the cookie sheet and slit my finger like it was cut with a razor. So I can tell you first hand (no pun intended) dried tomatoes skins are razor sharp.
You are welcomed to come use or see my extractor first hand if nothing more than to satisfy your curiosity. I should mention that it will not fit deep sized frames.”
Although you don’t see it in the video there were runs made hands free and the barrel didn’t go anywhere; no need for chains and such. For test runs I wanted the worst case scenario so I intentionally picked out frames that were not equal. Within thirty seconds to a minute the frames become more equal in weight and the shaking subsides. My only concern was popping the x-brace out not that the barrel would tip over or move around. That is why my hand is there.
Vibration might increase the speed of the drip method but it would never outperform the centrifugal force method.