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Post by Drummond Island Rocks on Jul 23, 2012 7:05:43 GMT -5
I have all the parts to add a second row to my homemade tumber but I am still working out the details. Here's a cad rendering showing my design using hinges to lower the upper assembly so the belt can be changed. Any thoughts or suggestions? In case anyone is wondering I just looked over my material list and with all the parts and lortone barrels I am guessing right around $500 and that was with a free motor(That sounds expensive but $270 of that is just in the barrels). I still think it was worth doing since a Lortone C200 with (2) 12 lb barrels is $500. upper shelf in position upper shelf rotated down to put the belt on tumbler at capacity (4) 3lb barrels and (2) 12 lb barrels thanks for looking chuck
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m83striker
starting to shine!
Member since July 2012
Posts: 36
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Post by m83striker on Jul 23, 2012 13:23:00 GMT -5
This is the same design that I was thinking for mine. I take it that the red pulleys are the transfer between the (2) levels. The only other consideration would be different pulleys between the levels since you are running larger barrels on top. If I'm thinking correctly, the 12lb barrels would have to be running faster than the 3lbers on the first level to get the same RPM's. Please correct me if I'm wrong because I'm thinking about doing the same setup.
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Post by Drummond Island Rocks on Jul 23, 2012 13:54:33 GMT -5
Yep, I have not ran the numbers yet but there will be a pulley change. The barrel diameter itself changes the RPM's also. Still trying to get an accurate number for how many rpm a stock lortone 12lb barrel runs at.
Chuck
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Post by Drummond Island Rocks on Jul 23, 2012 14:12:39 GMT -5
just ran the numbers and If I use my 3" pulley off the lower going up to a 1.5" pulley on the upper the barrel (12 lb barrel is 6.75" O.D.) would be going 55 rpm. So a 2" upper pulley would get it down to 38 rpm.
Chuck
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m83striker
starting to shine!
Member since July 2012
Posts: 36
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Post by m83striker on Jul 23, 2012 19:08:32 GMT -5
I would love to have a set of 12lb barrels, but the cost really kills the deal!! I might attempt the (2) tier model, but it would probably be for another (3) 4" pvc barrels.
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Post by Drummond Island Rocks on Jul 23, 2012 19:54:30 GMT -5
I agree that the cost seems very high on the rubber barrels. There has to be a big profit margin on those things. I run ours in the basement though and it can not be heard on the main level at all. I guess I should not complain too much though becuase with (5) lortone barrels running 24-7 for a year we have had zero issues and clean outs are a breeze with them too.
Chuck
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m83striker
starting to shine!
Member since July 2012
Posts: 36
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Post by m83striker on Jul 23, 2012 20:10:52 GMT -5
I have the pvc barrels out in the garage with a pink styrofoam box over them to reduce the noise. I can't hear anything inside the house except a faint hum of the motor when everything is shut off and the 9 year old is in bed, lol. I thought about getting bigger pvc with the same type caps, but there is a huge jump in price when going from 4" pipe to 8"pipe. The only thing I can do is possibly go for the 2nd tier so that I can have (6) 4" pvc barrels going at the same time.
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Post by Drummond Island Rocks on Jul 23, 2012 20:18:06 GMT -5
I keep my eyes peeled on craigslist for used tumblers just for the barrels. The best deal I have gotten on tumbler stuff was a 3lb lortone tumbler with a nice barrel for $10 and that thing is still running right now.
I bet there's some at garage sales for people that really hunt for them.
Chuck
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darstcreek77
has rocks in the head
Member since April 2011
Posts: 673
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Post by darstcreek77 on Jul 27, 2012 8:45:44 GMT -5
Make the barrels out of pvc . about 18.00 each
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shermlock
has rocks in the head
Member since August 2011
Posts: 612
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Post by shermlock on Aug 25, 2012 20:43:37 GMT -5
Chuck, How are you planning on securing the top shelf? I see you are using hinges on the other side. I'm going to tackle this same project next week. Scott
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Post by Drummond Island Rocks on Aug 25, 2012 21:35:01 GMT -5
Scott I have all my parts but have not had the funds for the 12lb barrels so I have not finished it yet. My original plan was to hinge the shelf and then pin it in place from the front to put tension on the belt but I really don't know how much tension is needed with these big automotive belts and pulleys. I have another idea I'll to sketch up and see what you think. Are you starting from scratch or adding on to an existing setup? Chuck
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shermlock
has rocks in the head
Member since August 2011
Posts: 612
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Post by shermlock on Aug 25, 2012 21:39:28 GMT -5
Starting from scratch. Scott
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Post by Drummond Island Rocks on Aug 25, 2012 22:39:21 GMT -5
Cool, post pictures as you go. There has not been much action for home made tumblers lately.
If I can help at all let me know, I have an excel document I made that breaks down all the pulley, shaft and barrel diameters to give you a final barrel RPM if you need it.
Chuck
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fwfranklen (Mike)
spending too much on rocks
Rock-ON--Have you kissed your rock today?
Member since August 2012
Posts: 379
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Post by fwfranklen (Mike) on Aug 26, 2012 8:20:47 GMT -5
Chuck post it or if you don't mind pm me with the excel document.
thanks Mike
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Post by Drummond Island Rocks on Aug 26, 2012 9:09:54 GMT -5
If anyone wants the excel chart I made PM me your email and I will send it. Here's a screenshot of how it works. You fill in the the blue boxes and the red ones fill in automatically. Chuck
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txtess
off to a rocking start
Member since September 2012
Posts: 1
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Post by txtess on Sept 7, 2012 12:41:59 GMT -5
My family had a fit about the noise from my rock tumblers in the garage. So I did some investigating online and found the site for Super Soundproofing in San Marcos, CA. They have an article about building a simple soundproofing "box" for generators and pumps that takes into consideration the need for air circulation. soundproofing.org/infopages/generator.htm It is too cool! Very easy to make and it works amazingly well. I only needed to use two boxes (instead of three) and I made mine out of acoustical ceiling tile. To try the principle, just get two boxes from Costco with one at least an inch smaller all the way around. The top should be cut off and then cut off one of the sides of each box. Put the smaller box over your noisy machine with the open botton down. Then take the larger box, turn it so the open side is not where the open side of the smaller box is, and put it on top, making sure the sides and tops don't touch and there is room for air flow.You should immediately notice a decrease in the sound level even with the plain cardboard boxes. Just think how better it will be with insultated materials! Have fun!
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fwfranklen (Mike)
spending too much on rocks
Rock-ON--Have you kissed your rock today?
Member since August 2012
Posts: 379
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Post by fwfranklen (Mike) on Sept 7, 2012 12:49:44 GMT -5
That is an awsome bit of information, thanks for sharing that. I will also use this. Mike
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Post by rocklicker on Sept 7, 2012 18:18:56 GMT -5
Wow, your planning and designing skills are incredible. Very well thought out design. I like how you have it set up with a nice table top when you are all done, so it's not just a big ol ugly tumbler when you are done. Not like tumblers are ugly. Steve
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