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Post by gmitch067 on Dec 8, 2017 12:11:48 GMT -5
I wonder if taping a 10 inch 1/4-20 threaded shaft centered across the red rubber cap to my Mini-Sonic 4 - with nuts on each end - would do the same thing? ... in a smaller way. Lol!
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Post by MrP on Dec 8, 2017 12:50:50 GMT -5
Since lowering the amplitude in a Vibrasonic I can now polish glass and obsidian. Amplitude was lowered by bringing mass of hopper closer to rocking vibration source. Externally adjustable slide counterweights have now been added directly across rocking force pivot to oppose them. More weights can be stacked on shaft if need be. Maximum amplitude reduction: Minimum amplitude reduction: It is not so much the amount of added weight as it is the distance from the pivot point. Due to the lever arm effect at high speeds. Neat....................................MrP
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jamesp
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Member since October 2012
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Post by jamesp on Dec 8, 2017 13:47:11 GMT -5
I wonder if taping a 10 inch 1/4-20 threaded shaft centered across the red rubber cap to my Mini-Sonic 4 - with nuts on each end - would do the same thing? ... in a smaller way. Lol! amygdule sent photos of the workings of a Mini-Sonic. I want to study them Glenn. I am curious as you about that vibe. Mini Sonic frequency is about the same as the Vibrasonic frequency. I now know that frequency is not the issue. It is the travel/amplitude. One problem is the fact that it is solenoid generated vibration as opposed to a spring and counterbalance rotating shaft. The more weight you add the less the springs travel and it does not load the motor up much. Removing weight tends to make the Vibrasonic self destruct. Or too much counterbalance and too little weight. Maybe the Mini Sonic manual says not to run it empty. A directly linked solenoid may overheat if you add weight. I believe that hopper sits on base springs which may/may not solve that problem.
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jamesp
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Member since October 2012
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Post by jamesp on Dec 8, 2017 17:55:54 GMT -5
thanks amygdule. I will take time to study the arrangement. The photos may help the best. They are in that other thread.
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Post by grumpybill on Dec 8, 2017 20:03:26 GMT -5
It doesn't get any simpler than the amplitude adjustment on a Lot-O: A wood dowel under two of the flat springs. Wonder if the factory uses a wrench to tune them before hot gluing?
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Post by captbob on Dec 11, 2017 8:12:23 GMT -5
Is that snow?
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jamesp
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Member since October 2012
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Post by jamesp on Dec 11, 2017 10:02:14 GMT -5
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Post by captbob on Dec 11, 2017 10:58:08 GMT -5
Holy crap! And NO thank you! Will the bamboo bounce back? How many inches? What is that box looking thing, a pump house? brrrrrrrrrrrrr to the 10th power
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Post by captbob on Dec 11, 2017 11:06:08 GMT -5
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jamesp
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Member since October 2012
Posts: 36,561
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Post by jamesp on Dec 11, 2017 11:09:59 GMT -5
Holy crap! And NO thank you! Will the bamboo bounce back? How many inches? What is that box looking thing, a pump house? brrrrrrrrrrrrr to the 10th power It was only 33 to 40 on the snow day. Then yesterday was 18/38. This morn 21F. Still covered w/snow. The shelf unit was to keep plant tags dry. And supports a motion sensor to activate boom box and lights to keep deer away from water lilies. I will have a long day behind a chain saw. I got 20+ different bamboos. some tend to break, most will come back up. I heard them snapping all day on snow day, maybe 100 big canes.
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Post by captbob on Dec 11, 2017 11:22:52 GMT -5
Well those are 25 bucks each plus shipping ifin' ya need spares. FWIW
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