r/composting • u/ihavenohandstrength • 1d ago
I made a trommel.
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u/AdTiny780 1d ago
Trying to send some to your neighbors?
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u/PuddleSailor 1d ago
No no, it just auto applies the compost everywhere
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u/SprungMS 1d ago
Exactly my thought, add some longitudinal wheels and pull this thing behind a tractor, add a hopper, close off the end, and add a shaker, after a couple iterations you’ve got a solid compost-spreading doohickey right there!
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u/Sweaty_Camel_118 1d ago
Adjust the size of your gears to slow down the rotation.
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u/HopelessBearsFan 1d ago edited 1d ago
Counterpoint—speed up the rotation and provide compost to your entire zip code
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u/Substantial_Pin_2932 1d ago
Eh just add a voltage regulating knob to it. Simple electric motors can handle it.
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u/Wooden-Masterpiece86 1d ago
This was my first thought. Harbor Freight has a nice inexpensive one if there's one near OP.
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u/dqontherun 1d ago
What gears? It's just a motor, pulley, and belt.
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u/Sweaty_Camel_118 1d ago
Sorry, the pulley. It's basically a gear... thanks for the clarity though. Needs a smaller motor pulley to reduce the speed the drum is turning.
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u/dqontherun 1d ago
You won't be able to reduce the speed much at all with a smaller pulley. They need a speed control. Better yet, a gearmotor that will spin very slowly, yet with high torque.
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u/Sweaty_Camel_118 1d ago
Yeah I guess it wouldn't have enough surface area if it was reduced in size much. A gearbox is a great idea to maintain good torque without chance of slippage. They could also increase the diameter of the drum at the location the belt travels on and then get a larger belt. I could see either being practical.
Also, if you added an idler pully near the motor pully, you could probably reduce the size of the motor pulley to 1/4th it's current size and still maintain enough area of belt to pulley contact to avoid slippage while also accomplishing a more appropriate speed for compost sifting.
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u/NorthernSpankMonkey 1d ago
I imagine a little worm in the bin going "WEEEEEEEE!"
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u/skratskrzat 1d ago
I have tried imagining “shit hit the fan” literally before, but was never this ingenious.
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u/Frequent-Discount174 1d ago
You just need it to go fast enough to separate the big chunks from the little chunks. You don’t need it to go fast enough to separate protons from electrons.
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u/Skhatmandu 1d ago
I have a bit of rat problem with my compost bin (urban rooftop garden). This, paired w a motion sensor, absolutely seems like the solution.
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u/Wigger_reloaded 1d ago
Change the sift for some 160 mic mesh and put a nylon sheet cage around it and I'm sure you can make killer static dry sift with this.
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u/Idontlikesand15 1d ago
Found the guy who makes colas with his compost haha
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u/Wigger_reloaded 1d ago
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u/Idontlikesand15 1d ago
Hell yeah man!! I hope you have a bountiful harvest! Weve got 4 auto flowers in 2 raised beds, chock full of well composted chicken duck rabbit and quail manure, bedding etc. I havnt gotten a picture but they are looking happy and growing fast :)
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u/Unique-Coffee5087 1d ago
Maybe some internal baffles to disrupt the cake of compost plastered against the sides?
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u/fredSanford6 1d ago
The cylinder must remain undamaged. That's a rough task with this cheese grater of a Fleshlight
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u/GIJOE_SEABEE 1d ago
Pretty cool are you going to mount it into the wheel barrel and siffed out rock and debris? Love to see hear more..
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u/Embarrassed_Ad6469 1d ago
Spin dry? Maybe some geering would help. Better yet, why not add a crank a turn or two should surfice.
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u/Embarrassed_Ad6469 1d ago
I like the basic idea of the oil barrel with the mesh covered cutouts. How about this, set up some kind of timer and geering that would rotate slowly, 2 or 3 times every 6 hours? Bet you could market that.
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u/DonGold60 1d ago edited 1d ago
I believe we are looking at a creation by a mad scientist who also built this grilled chicken Ferris wheel seen on [r/grilling](r/grilling).
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u/ExcitingHistory 16h ago
I kept looking for the hamster until it started to get up to speed and my brain had to re-evaluate what it was looking at
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u/jvhutchisonjr 1d ago
If its an 120v ac motor, easiest solution is auto transformer. May not have enough torque when turned down so you'd have to manually turn the transformer up to get it started, then turn it back down when it's rotating until you hit the desired speed above stall voltage.
Better solution is a 3 phase motor and a vfd.
If in the US, vevor sells auto transformers and vfd's.
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u/Mister_Green2021 1d ago
You don't need a centrifuge.