Getta Grip
noticing nice landscape pebbles
Member since November 2016
Posts: 81
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Post by Getta Grip on Nov 5, 2016 13:03:38 GMT -5
Greetings Everyone, This is my first post to the "Home made Equipment" forum.
I am making plans to build a tumbler. I am consideri9ng using a golf cart wheel for a barrel.
I am guessing this is not a new idea and some one probably has some experience with this.
Here's my first question; How does the inside of a tire hold up to the abrasive pounding over time.
If the abrasive tears up the tire, has anyone attempted coating the inside of the tire with liquid Urethane products?
Thanks Glen
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Post by pauls on Nov 5, 2016 15:49:47 GMT -5
I don't know about golf cart tyres but here in Australia a lot of tumblers use Go Kart tyres, apparently they need to be competition tyres because they have a harder composition rubber and harder side walls. Plug the hole in the donut with two rubber drain plungers back to back and bolted through the centre bit where the stick came out.
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Getta Grip
noticing nice landscape pebbles
Member since November 2016
Posts: 81
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Post by Getta Grip on Nov 6, 2016 10:59:38 GMT -5
I have a plan to use a tire for a barrel. After reading a bit, I found the tires do in fact wear out. Has anyone done any testing of rubber coatings to resist abrasion?
My plan sets a tire in a hexagon frame to provide an aggressive tumble. The frame is set between two 15" wooden disks that will ride on the rollers.
I won't want to replace the tire because the frame is sized for that specific tire.
If you have done any experimenting with abrasion resistant coatings, I would appreciate any information you could share.
Thanks Glen
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Nov 6, 2016 17:26:07 GMT -5
6" PVC makes a great barrel.
Tyres? Not so much.
Save the headaches and don't re invent the wheel, pun intended!
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,159
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Post by jamesp on Nov 7, 2016 5:29:50 GMT -5
One problem with a tire is that a tumbler barrel needs to have open space and be 3/4 full of rocks to perform best. Sealing the big openings on a tire is a challenge. If you figure out a reliable seal then the trie would be coup de gras.
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Getta Grip
noticing nice landscape pebbles
Member since November 2016
Posts: 81
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Post by Getta Grip on Nov 7, 2016 15:24:06 GMT -5
Shotgunner.... PVC? OK I have not been into rocks for 50 or so years. I may need a bit of an education. I am an industrial mechanic and I tend to over design things. I have a couple questions. Isn't PVC vulnerable to the abrasives used to tumble? How often do you replace the barrel? PVC is smooth inside. Do you do anything to the inside to assist the material in tumbling?
jamesp.... 3/4 full? Really? Wow! OK so if I'm using a 14" barrel(tire)that is 7" deep, I would lay it down with one side plugged off, and put about 5" of rock and grit in it? Install the other plug and put it on the rollers? That would be about 18 pounds of rock. Does that sound right?
HMMM.. With my design I could seal the holes fairly easily. I'm more concerned about the abrasion eating the tire up. I have worked on industrial vibe units. They use a polyurethane lining that has a durometer rating of 90 - 95. I can buy the material in sheets and glue a lining in, but I would rather find a liquid I could apply to the inside.
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Getta Grip
noticing nice landscape pebbles
Member since November 2016
Posts: 81
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Post by Getta Grip on Nov 7, 2016 15:29:20 GMT -5
That would be about 18 pounds of rock. Does that sound right? OOPS! That would be closer to 45 pounds. Yikes! That's a lot of rock!
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Nov 7, 2016 20:01:25 GMT -5
Shotgunner.... PVC? OK I have not been into rocks for 50 or so years. I may need a bit of an education. I am an industrial mechanic and I tend to over design things. I have a couple questions. Isn't PVC vulnerable to the abrasives used to tumble? How often do you replace the barrel? PVC is smooth inside. Do you do anything to the inside to assist the material in tumbling? jamesp.... 3/4 full? Really? Wow! OK so if I'm using a 14" barrel(tire)that is 7" deep, I would lay it down with one side plugged off, and put about 5" of rock and grit in it? Install the other plug and put it on the rollers? That would be about 18 pounds of rock. Does that sound right? HMMM.. With my design I could seal the holes fairly easily. I'm more concerned about the abrasion eating the tire up. I have worked on industrial vibe units. They use a polyurethane lining that has a durometer rating of 90 - 95. I can buy the material in sheets and glue a lining in, but I would rather find a liquid I could apply to the inside. They are inexpensive, last for a couple years and get the job done. 6" at 30-50rpm seems to be a sweet spot. jamesp Jim. One task I have never mastered is searching threads. Can you please refer him to your barrel build(s).
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,159
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Post by jamesp on Nov 7, 2016 21:30:23 GMT -5
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,341
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Post by quartz on Nov 7, 2016 23:53:20 GMT -5
Getta Grip, I ran a 12"dia.x12"long sched. 40 PVC barrel quite steadily for 12 years before it got thin and cracked; start runs with 16 grit. They are durable.
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Getta Grip
noticing nice landscape pebbles
Member since November 2016
Posts: 81
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Post by Getta Grip on Nov 7, 2016 23:57:56 GMT -5
So, You don't need anything inside the barrel to assure tumbling? That makes it easier 8^)
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Getta Grip
noticing nice landscape pebbles
Member since November 2016
Posts: 81
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Post by Getta Grip on Nov 8, 2016 0:02:34 GMT -5
Getta Grip , I ran a 12"dia.x12"long sched. 40 PVC barrel quite steadily for 12 years before it got thin and cracked; start runs with 16 grit. They are durable. 12 x 12? So that runs about 50 pounds of rock? (figuring gravel about 90 pounds per cubic foot and 3/4 full). That's a bunch of rocks!
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,341
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Post by quartz on Nov 8, 2016 0:38:10 GMT -5
Yes, 50 lbs. of rock. No "kickers" in the barrel, proper speed is the ticket, listen closely and the load will tell you when it's right. I run it 17 R.P.M.
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huskeric
spending too much on rocks
Member since May 2016
Posts: 353
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Post by huskeric on Nov 10, 2016 9:47:36 GMT -5
@getta Grip, welcome to the boards. I, like you, enjoy the pioneering aspect of tumbling. If you just look at some of my posts, you will see quite an interesting history of "amazing ideas." I have seen some of the tire tumblers, and honestly, if you wanted to do that, I would tell you go for it. I couldn't begin to compare PVC vs a steel-belted tire, but the tumbler barrels we buy with the best rotary tumblers are made of rubber.
I say that, and in the same breath, I would tell you to temper your expectations. If you are prepared for failure or at least limited success, then you will enjoy the discovery that comes with it. If you want to have a "guaranteed" kind of solution, then I would either buy a solution from one of the trusted names (Lortone, etc.) or 100% recommend that you read through these forums and you will find a number of interesting variations on a central, consistent theme.
The folks on these boards are amazing, and I have learned an amazing amount in the 6 months I've been in this hobby. I still know WAY less than 90% of these guys/gals have forgotten, but that just means I have a number of years of this hobby to keep me interested. Best of luck to you!
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,159
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Post by jamesp on Nov 10, 2016 9:50:56 GMT -5
PVC good tumbling barrel. sch 40 for 6" and 8" and not SDR 35 drainage pipe(too thin).
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