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Post by MrP on Dec 4, 2017 10:09:30 GMT -5
Vibration test in spring direction with hoppers mounted and full of rocks. Range of acceptable vibration for soft rocks using basic tools. This situation is similar to a truck with stiff springs. 1) truck with no load delivers rough ride with sharp impulses. 2) truck fully loaded to specified amount delivers softer ride. Added weight is the controlling factor. Sitting in the middle of the truck is probably the smoothest ride, riding over the springs probably delivers the roughest ride. You need to figure out Air Ride for the soft ones............................MrP |
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Post by MrP on Dec 2, 2017 17:29:50 GMT -5
What brand of analyzer did you use and does size matter in this case?...............................MrP Looks like a 5/8" Craftsman probe attached to a Georgia Redneck analyzer. Ah Georgia Redneck. Must be a very High end unit.............................MrP |
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Post by MrP on Dec 2, 2017 16:51:23 GMT -5
That is one fine batch!.............................MrP
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Post by MrP on Dec 2, 2017 16:41:21 GMT -5
What brand of analyzer did you use and does size matter in this case?...............................MrP
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Post by MrP on Dec 2, 2017 16:39:04 GMT -5
We need a Dating Service for Lapidary People My wife says no!..................................MrP |
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Post by MrP on Dec 2, 2017 7:31:25 GMT -5
No the new are harder to stretch. I had a weaker set that are a touch too long that I tried that I thought worked about the same but there was not as much tension on the belt so I thought I would try something else. Nothing wrong with the set I have but you and I know that if I am running a batch that I really want a spring will break!.............MrP You mentioned the tension on the belt. I bought some stiffer O-rings for the Vibrasonic. Not intentionally. They seem to last longer for some reason. Anyway, the belt tension has to come into play because it pulls on the springs, apparently on the Rockette too. If the springs have so much effect you have to wonder how the belt tension effects the springs. Yes it all adds up. Even the placement of the tub on the Vibrasonic made a difference..........................MrP |
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Post by MrP on Dec 2, 2017 7:13:04 GMT -5
Don't get me wrong, I am in no way unhappy with the results I am getting, just looking for out of AO180 to perfect polish in a couple of hours. How can a person go from a 2 week polish to a 2 day polish and still want shorter time? Just fun to play with new ideas. Of course maybe you understand that!..................MrP So you are using AO 180 ? I started using AO 220 recently and found it to be magic in the vibe. Yes I like the idea of not having to worry as much about cross contamination as much as with Sic. I feel that if a particle or two gets by it may not do as much damage as a 60/90 Sic particle would. I may be wrong but that is what I am going with......................MrP |
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Post by MrP on Dec 1, 2017 18:07:33 GMT -5
I know it has to be a large part but was still surprised that there was no change with that spring even though I backed off on the bolts to take tension out of the spring. I thought if giving the spring less tension it would bring it more towards the tension of the original springs but that didn't seem to work. I am going to play around some more and see if I can get more motion with different springs. My thought is it was tried in the design of it so I will not win but now I am curious..................MrP
Just thinking out loud here... Maybe you could heat the new springs to take some of the tension out of them? Or would that introduce new problems?
More than a few people in SoCal ruin modify their cars, torching the springs and adding hydraulics to make low riders. (What a waste of a perfectly good car or truck, lol)
Yes but getting 4 the same could be a problem. I think I may give it a try at sometime though.
Low rider? 
Guess you know what I think.................................MrP
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Post by MrP on Dec 1, 2017 17:44:07 GMT -5
I know it has to be a large part but was still surprised that there was no change with that spring even though I backed off on the bolts to take tension out of the spring. I thought if giving the spring less tension it would bring it more towards the tension of the original springs but that didn't seem to work. I am going to play around some more and see if I can get more motion with different springs. My thought is it was tried in the design of it so I will not win but now I am curious..................MrP Are the new springs easier to stretch ? You can order springs from a spring company. They are likely a standard spring. They are rated by the spring constant 'k'. You can calculate the print constant. Hang 1 pound on it and measure exact stretch. If the spring drops 1/2" with 1 pound the spring constant is 2 k = force/distance stretched = 1 pound/1/2 inch = 2 pounds/inch Or more/less weight till you can measure a stretch length. If you have to have them custom made you may have to pay a lot. Hopefully they are stock. Let me know if you need the name of a spring company. I believe I ordered my last set thru a company that quartz told me about. No the new are harder to stretch. I had a weaker set that are a touch too long that I tried that I thought worked about the same but there was not as much tension on the belt so I thought I would try something else. Nothing wrong with the set I have but you and I know that if I am running a batch that I really want a spring will break!.............MrP |
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Post by MrP on Dec 1, 2017 16:48:12 GMT -5
Don't get me wrong, I am in no way unhappy with the results I am getting, just looking for out of AO180 to perfect polish in a couple of hours. How can a person go from a 2 week polish to a 2 day polish and still want shorter time? Just fun to play with new ideas. Of course maybe you understand that!..................MrP
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Post by MrP on Dec 1, 2017 16:41:59 GMT -5
I wanted a spare set of springs for my Rockette tumbler and was in Menards today. Could not find exactly what I have so bought a close set that were the same length but stronger, just to see how they would work. The rocks would not rotate! I guess Size really does matter. Must have taken some real experimentation to come up with the right combination. I figured there would be some change but to have zero rotation was unexpected.........................MrP The springs are huge part of system Michael. It is telling about how complicated it it to make a vibe. You have the force(vibration), spring and mass. It is 1/3 of the system.  I suppose I hit a home run today. My new set up did slow-to-tumble glass and obsidian in less than 3 days. These are at 8 hours in polish, still running. 2 days in AO 220 before that. I am a bit freaked out.  Now that is what I am looking for each and every time!..............................MrP |
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Post by MrP on Dec 1, 2017 16:40:12 GMT -5
I wanted a spare set of springs for my Rockette tumbler and was in Menards today. Could not find exactly what I have so bought a close set that were the same length but stronger, just to see how they would work. The rocks would not rotate! I guess Size really does matter. Must have taken some real experimentation to come up with the right combination. I figured there would be some change but to have zero rotation was unexpected.........................MrP The springs are huge part of system Michael. It is telling about how complicated it it to make a vibe. You have the force(vibration), spring and mass. It is 1/3 of the system. I know it has to be a large part but was still surprised that there was no change with that spring even though I backed off on the bolts to take tension out of the spring. I thought if giving the spring less tension it would bring it more towards the tension of the original springs but that didn't seem to work. I am going to play around some more and see if I can get more motion with different springs. My thought is it was tried in the design of it so I will not win but now I am curious..................MrP |
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Post by MrP on Dec 1, 2017 16:12:27 GMT -5
I wanted a spare set of springs for my Rockette tumbler and was in Menards today. Could not find exactly what I have so bought a close set that were the same length but stronger, just to see how they would work. The rocks would not rotate! I guess Size really does matter. Must have taken some real experimentation to come up with the right combination. I figured there would be some change but to have zero rotation was unexpected.........................MrP
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Post by MrP on Dec 1, 2017 15:59:44 GMT -5
Dandy rock grinder with water feed. 7 inch Advanta tuck bade half worn out after about 30 big rocks. 3500 RPM makes a fast cutter.   You will want to watch water infiltration into that motor. That is what happened to the first one I had. I made a 3 piece shield for the second one I bought to make it much harder for the water to enter..........................MrP |
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Post by MrP on Dec 1, 2017 9:31:19 GMT -5
I have to say that when I started this hobby I tried to keep things clean but when I was working and running 7 rotary barrels, 5 vibe tubs, and 3 saws it got to be too much to keep everything pristine..................................MrP Yep. Too much like a factory with one employee. The wife certainly ain't cleaning it up. You are right about that! She sure likes the results that I end up with though so that is good. In fact many times at a rock shop or show she MAKES me buy many rocks I don't WANT.  .........................MrP |
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Post by MrP on Dec 1, 2017 7:58:12 GMT -5
I don't keep my equipment pristine like some do, but I do keep it in top use condition. I would rather use it then clean it. I get a kick on people talking about cleaning there saw and wiping the inside so it is new looking. I take a small container and dip all the crud out put new oil or coolant in, depending on the saw, then get to cutting again. All it takes is a cut or two and it is a mess again anyway. I do make sure the polished material and jewelry I make looks nice!...............................MrP My rotary tumbler has a roof over the motor. It is in a greenhouse and after every clean out I wash the whole machine down with water from the garden house. The rotary is to the right. Notice slurry floor to right. It is a slurry concreted floor. Weed free. Nasty operation that rotary. Not meant for white carpet. But a dedicated grease gun sits next to the rotary and the bearings stay well greased.  I have to say that when I started this hobby I tried to keep things clean but when I was working and running 7 rotary barrels, 5 vibe tubs, and 3 saws it got to be too much to keep everything pristine..................................MrP |
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Post by MrP on Dec 1, 2017 6:44:59 GMT -5
Yes the bearings are right above. Had to replace both the motor and counterweight bearings. I knew I might have to when I bought it but I only paid $75 for it so I may have come out all right...................................MrP I was going to be a smart alec and ask you to clean up your machinery. You only paid $75 ? Now I am full scale jealous. I don't keep my equipment pristine like some do, but I do keep it in top use condition. I would rather use it then clean it. I get a kick on people talking about cleaning there saw and wiping the inside so it is new looking. I take a small container and dip all the crud out put new oil or coolant in, depending on the saw, then get to cutting again. All it takes is a cut or two and it is a mess again anyway. I do make sure the polished material and jewelry I make looks nice!...............................MrP |
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Post by MrP on Dec 1, 2017 6:24:02 GMT -5
MrP , is this grease ?  Yes the bearings are right above. Had to replace both the motor and counterweight bearings. I knew I might have to when I bought it but I only paid $75 for it so I may have come out all right...................................MrP |
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Post by MrP on Nov 30, 2017 6:13:43 GMT -5
jamesp Thanks for fixing those............MrP
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Post by MrP on Nov 30, 2017 6:06:31 GMT -5
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.........................MrP
