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Post by txrockhunter on May 7, 2016 14:22:05 GMT -5
Received a homemade tumbler as a gift from Arrowhead Dave and tried a little revision to make the noise acceptable for the wife and neighbers. I have been stalking jamesp, Intheswamp, and @shotgunner for ideas and went for it. I built the frame out of scraps I had lying around, picked up the pillow blocks, small pulleys, and 1/4 hp motor from Northern Tool, and 2 - 1" X 48" steel rods from metal depot. Dave supplied 2 - 6" & 1 - 4" barrel, the 10" pulley, and the bearings in the back. There were no plans or measurements other than the roller spacing to make sure they were parallel. All other spacing was determined by size of belt that I bought (I can't do plans like jamesp & Intheswamp, it makes my head hurt). Because of that, I have to do a lot of adjustments and will for a while until it's dialed in. Anyway, the 2 pvc barrels are running about 60 pounds of rock between them and the 12# Lortone barrel on the back. There is room for a couple more 12# barrels if I can find a few cheap ones. The long 6" barrel is running about 60 - 65 rpm and the smaller one about 55 rpm......experimenting with tubing over the rollers on the larger barrel. The Lortone is running about 35-40 rpm. Using clay and fuller barrels to cut down on some of the noise and will be trying some sound deadening material on the outside of the barrel. Same stuff the line cars with when their stereo systems are too loud......not how that is even a thing, but I am glad to try it to cut some noise from the pvc tumbler. Thank you guys for the equipment and ideas to put this together!
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Deleted
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Post by Deleted on May 7, 2016 14:45:38 GMT -5
effing awesome!
That is cool. Im contemplating a similar build.
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jamesp
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Member since October 2012
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Post by jamesp on May 7, 2016 15:28:28 GMT -5
Poetry in motion. Liking the Fernco rubber bells on the end of the PVC, good traction and the shoulder will about never wear out. Love it. Posi-traction shafts-yes. Probably a single drive on the Lortone barrel is fine.
James did few calculations, pretty much slapped mine together aligned, carried it to the car parts place and had a v-belt party in the back room.
Added end rollers last. They can be aggravating.
Did use fat 1.5 inch shafts to avoid center bearing. I would think 1 inch shaft would not deflect Jeremy if you wanted to loose the two center bearings. I just had a bunch of 1.5 inch stock at the time. It will probably hold 300 pounds w/out deflecting, way over kill.
What is the red material on the shafts ? And they clay will darn sure quiet things. So will 35-45 RPM. Which would be going from a 10 inch sheave(pulley) to 16-18 inch ones. My main pulley must be 16" - 18" About required to do 30-50 RPM for your shafts and 6" PVC with 1725 motor. Unless you can find a 1/4 HP 1080 RPM motor. They make them-fan motors in roof top A/C's.
Should have many years use. cool build
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Post by txrockhunter on May 7, 2016 21:54:36 GMT -5
What is the red material on the shafts ? And they clay will darn sure quiet things. So will 35-45 RPM. Which would be going from a 10 inch sheave(pulley) to 16-18 inch ones. Read more: forum.rocktumblinghobby.com/thread/74852/tumbler-upgrade-arrowhead-dave#ixzz481ompolfThanks, James. The red stuff is stucco tape. I built it up as a stop that keeps the barrel from creeping. I tried without the center pillow blocks but was getting good alot of shaking. I put the center blocks in and it still shook. I figured out that the 6" end cap has a hump where it was cut off the mold, making it almost bounce. Sanded the cap down but left the blocks in for now. I started off with a 4" motor pulley and it was humming at a brisk 90 rpm. Backed off to a 2" pulley and it slowed down significantly. I'll keep playing with it.
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jamesp
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Post by jamesp on May 7, 2016 22:17:58 GMT -5
Yea, my barrels bounce a bit at start. Took the grinder to those mold points right off. 35-40 RPM reduces some of that. But ran coarse grind at 55 for a long time and no problem. I tinkered with mine for a while, got it where I like it. Rotary tumblers allow a lot of variation.
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Deleted
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Post by Deleted on May 7, 2016 23:31:33 GMT -5
When I ran it there was an 1 1/2" pulley on the motor Dave
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Intheswamp
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Post by Intheswamp on May 8, 2016 0:09:58 GMT -5
Yo! Nice looking tumbler!!!! I'm getting ready to finish putting together my second 6" barrel and will line the inside of the barrel and the round end cap with rubber inner tube material. The bushing/cap end will not get the rubber as the sloped bushing would be problematical to cover. Hoping this will quieten the noise down some. If there is a noticeable difference I'll attempt to retrofit the first barrel with rubber in the barrel (I did add rubber to the end cap). Looking good and lots of those SJ rocks a'rollin'!!!!! Ed
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herchenx
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Member since January 2012
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Post by herchenx on Jul 7, 2016 13:54:53 GMT -5
nice Tumbler!
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Post by Garage Rocker on Jul 7, 2016 14:07:38 GMT -5
Holy cow, that's a lot of tumbling capacity right there in that picture. Nice tumbler. Got the double barrel Lot O waiting to handle whatever comes it's way too. Expect to see many new batches of polished rock rolling out.
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