jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Nov 19, 2019 7:35:32 GMT -5
Both hoppers mounted on Vibrasonic with a slurry of sugar at equal dosing of 1.5 tablespoons per pound of rock.
This is a smaller well designed Minisonic hopper on a Vibrasonic. Note action is fast.
This is a larger perhaps poorly designed hopper by me. Note action is slower.
In either case the final polish came at the same amount of tumbling time. The rolling speed has little to do with finishing time in this case. And there is no bouncing rocks because of the sticky slurry.
Also, the left hoppers both have slower rotation than the right side because my vibe is not balanced well. No matter, it is the left side that polishes slightly quicker.
The adjustable counter weights are adjusted to near minimum 'off balance' for these small hoppers. For the larger 35 pound hopper the 'off balance' is increased substantially to shake the extra weight so says the Vibrasonic instructions.
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Post by oregon on Nov 19, 2019 14:27:28 GMT -5
The adjustable counter weights are adjusted to near minimum 'off balance' for these small hoppers. For the larger 35 pound hopper the 'off balance' is increased substantially to shake the extra weight so says the Vibrasonic instructions. I searched but can't seem to find a post of yours a long while back that shows the guts of the vibrasonic and how they're set up? Belt to a counter-shaft with offset weights rather than directly on motor? Is the counter shaft attached to the plate then that's supported by springs? just curious. Or just a link to those pics/post if you have better luck than me finding it.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Nov 19, 2019 21:41:36 GMT -5
The adjustable counter weights are adjusted to near minimum 'off balance' for these small hoppers. For the larger 35 pound hopper the 'off balance' is increased substantially to shake the extra weight so says the Vibrasonic instructions. I searched but can't seem to find a post of yours a long while back that shows the guts of the vibrasonic and how they're set up? Belt to a counter-shaft with offset weights rather than directly on motor? Is the counter shaft attached to the plate then that's supported by springs? just curious. Or just a link to those pics/post if you have better luck than me finding it. www.flickr.com/photos/67205364@N06/albums/72157649367092502These will explain the design oregon.
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Post by oregon on Nov 19, 2019 21:45:13 GMT -5
Ah yeah those are them, remind us of the outcome of your home made Vibrasonic?
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Nov 19, 2019 21:56:46 GMT -5
Ah yeah those are them, remind us of the outcome of your home made Vibrasonic? After looking at the Vibrasonic's design using a twin shaft 3600 RPM motor it was apparent my design needed serious changes.
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