speedgoat
off to a rocking start
When you don't know what to be, Be Kind.
Member since December 2020
Posts: 7
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Post by speedgoat on Jan 24, 2021 21:32:50 GMT -5
I am brand new to this with my daughter it is what we have decided we would like to do when she visits. I am on a limited budget and am trying to design a Rock Tumbler as cost affective as I can. I am hoping to get some ideas and advice what others have done Drivetrain used pulleys shafts Bearings overall dimensions I have 2 lortone 33B's and struggle to find parts in my area and Lortone is out of stock. I want to be able to walk into any hardware store and get replacement parts. I currently have 3 motor options A) 1/4 Hp 1725 rpm, B) 1/2 Hp 1725 rpm and a 3/4 hp 1725 rpm. I am thinking of using 3/4 in pillow block bearings and 3/4 inch keyed shaft I am thinking of 3 rows of rollers (I will start with one and add as I can afford it but the structure will be built to accommodate 3) Any advice would be greatly appreciated. Pictures would be awesome. Also what are your clean up stations like? we live in the Great White North so clean outs outside are not that fun. Also have a Facebook Group called Canadian Rock Swap it is open to all www.facebook.com/groups/871577526911563
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Post by rmf on Jan 25, 2021 7:23:37 GMT -5
the quarter horse motor is good for 2 x 12# tumbler for sure. If you make a tumbler that can use the 4 drums from your 33b's then you should be able to put 2 12# drums on it if you want to upgrade to larger capacity |_______|_______|__ You need two rollers and 1/2" is large enough diameter. In the graphic the verticals are the bearing locations and the horizontal is the shaft. When I built one I connected the shafts with a sprocket an used a bicycle chain so they both acted as drive shafts. This eliminates any slippage like in the Lortone design. then I used a 1" pulley on the motor and a 12" pulley on the shaft.
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speedgoat
off to a rocking start
When you don't know what to be, Be Kind.
Member since December 2020
Posts: 7
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Post by speedgoat on Jan 25, 2021 9:22:47 GMT -5
the quarter horse motor is good for 2 x 12# tumbler for sure. If you make a tumbler that can use the 4 drums from your 33b's then you should be able to put 2 12# drums on it if you want to upgrade to larger capacity |_______|_______|__ You need two rollers and 1/2" is large enough diameter. In the graphic the verticals are the bearing locations and the horizontal is the shaft. When I built one I connected the shafts with a sprocket an used a bicycle chain so they both acted as drive shafts. This eliminates any slippage like in the Lortone design. then I used a 1" pulley on the motor and a 12" pulley on the shaft. Thank you
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Post by Drummond Island Rocks on Jan 25, 2021 10:08:23 GMT -5
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speedgoat
off to a rocking start
When you don't know what to be, Be Kind.
Member since December 2020
Posts: 7
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Post by speedgoat on Jan 25, 2021 19:58:58 GMT -5
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Post by holajonathan on Jan 26, 2021 2:25:58 GMT -5
I am brand new to this with my daughter it is what we have decided we would like to do when she visits. I am on a limited budget and am trying to design a Rock Tumbler as cost affective as I can. I am hoping to get some ideas and advice what others have done Drivetrain used pulleys shafts Bearings overall dimensions I have 2 lortone 33B's and struggle to find parts in my area and Lortone is out of stock. I want to be able to walk into any hardware store and get replacement parts. I currently have 3 motor options A) 1/4 Hp 1725 rpm, B) 1/2 Hp 1725 rpm and a 3/4 hp 1725 rpm. I am thinking of using 3/4 in pillow block bearings and 3/4 inch keyed shaft I am thinking of 3 rows of rollers (I will start with one and add as I can afford it but the structure will be built to accommodate 3) Any advice would be greatly appreciated. Pictures would be awesome. Also what are your clean up stations like? we live in the Great White North so clean outs outside are not that fun. Also have a Facebook Group called Canadian Rock Swap it is open to all www.facebook.com/groups/871577526911563I roll 45 pounds of rocks (60 pounds with barrels / grit / water) using a 1/6 hp motor. It gets warm, but no signs of overwork or overheating. It's been running that way for over a year. In other words, don't underestimate the 1/4 HP motor. And if you plan on rolling and rolling rocks, consider the electricity cost of a bigger motor. It really can add up. My 1/6 hp motor costs about $20 a month in electricity if run non-stop, or $240 a year. Not pocket change.
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speedgoat
off to a rocking start
When you don't know what to be, Be Kind.
Member since December 2020
Posts: 7
|
Post by speedgoat on Jan 26, 2021 18:27:35 GMT -5
I am brand new to this with my daughter it is what we have decided we would like to do when she visits. I am on a limited budget and am trying to design a Rock Tumbler as cost affective as I can. I am hoping to get some ideas and advice what others have done Drivetrain used pulleys shafts Bearings overall dimensions I have 2 lortone 33B's and struggle to find parts in my area and Lortone is out of stock. I want to be able to walk into any hardware store and get replacement parts. I currently have 3 motor options A) 1/4 Hp 1725 rpm, B) 1/2 Hp 1725 rpm and a 3/4 hp 1725 rpm. I am thinking of using 3/4 in pillow block bearings and 3/4 inch keyed shaft I am thinking of 3 rows of rollers (I will start with one and add as I can afford it but the structure will be built to accommodate 3) Any advice would be greatly appreciated. Pictures would be awesome. Also what are your clean up stations like? we live in the Great White North so clean outs outside are not that fun. Also have a Facebook Group called Canadian Rock Swap it is open to all www.facebook.com/groups/871577526911563I roll 45 pounds of rocks (60 pounds with barrels / grit / water) using a 1/6 hp motor. It gets warm, but no signs of overwork or overheating. It's been running that way for over a year. In other words, don't underestimate the 1/4 HP motor. And if you plan on rolling and rolling rocks, consider the electricity cost of a bigger motor. It really can add up. My 1/6 hp motor costs about $20 a month in electricity if run non-stop, or $240 a year. Not pocket change. Good Point
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Post by Drummond Island Rocks on Jan 26, 2021 20:28:36 GMT -5
A good quality 1/4 capacitor start motor is great for home built tumblers. A 1/6 may work great as well but they are nowhere near as common to find used as 1/4. I actually use 1/3 for mine just because of how common it is and how cheap they are plus using 1/3 makes motors interchangeable between my tumbler, trim saw and flat lap. A bit over kill maybe but I can have over 100 pounds of rocks at a dead stop and turn the tumbler on with no hesitation.
Chuck
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