52 lines
2.3 KiB
Markdown
52 lines
2.3 KiB
Markdown
### Watering solutions
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- Solar-powered heater
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- Inverse coffee percolator
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- https://www.builditsolar.com/Projects/WaterHeating/SteveTank/SteveTank.htm
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- http://www.the7msnranch.com/2010/12/solar-heated-water-trough-product.html
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- Fence-powered heater
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- Run fence at 120v straight off the line
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- Run fence at a constant, elevated voltage
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> 1e-7 ohm-meters of resistance for steel,
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> 3mm steel diameter
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> R = rho x L/A
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> `1e-7 ohm-meters * 1 mile / (pi/4*(3mm)^2) = 22.77 ohms`
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> a drop cord is like... half an ohm
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> you would need to step up the voltage to nearly 10kv to get equivalent power
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> running a line at a constant 10kv doesn't sound smart. chargers pulse for a reason
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- Super-insulated bucket, pride of the farm - MBH5B - https://www.ruralking.com/brower-manufacturing-insulated-bucket-holder-blue-mbh5b
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### Improved fencing grazing solutions
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- Adapting the GPS-style collars
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- Put a base station out and use some sort of radio time-of-flight
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- Put a base station out, use wifi or something to comm, but still rely on GPS
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- Use dog fence wire. Just lay it out on the ground, no need to worry about fence staying taut
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- Temporary high-tensile wire to do alley grazing;
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- How tight can polywire go? around 180lb - density is 3.1lb / 1320 ft = .0023 lb/ft
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- High-tensile wire is 1500 lb - 99lb / 4000 ft = .024 lb/ft (10x heavier, 10x stronger)
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- close enough formula: `T = W*L/4/H = w*L^2/4/H` ; so a T/w ratio is constant;
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- .3 in: `T = .0023 * 30*30/4/.025 = 20 lb`
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- Put up panels rather than stringing wire to prevent movement
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- Use a tractor as a back-fence rather than as the whole thing
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- Super simple tractor made of cattle panel
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- Pallet back
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- Trampoline top
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- All-in-one automatic winch like Thomas Massie's https://www.instagram.com/repthomasmassie/reel/DCEvt4Ugi9y/
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- 100lbf at 20ft / hr = .75 watts
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- This is... so doable with a solar winch, at even tiny efficiencies
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- 2000 lb winch pulls how many amps?
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- Wheeled chicken tractor, using feelers like you would with a corn head
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### Agronomic ideas
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- Pastured pigs
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- Interseed covers on corn
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- Strip cropping
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- Sheep / cover crop grazing in corn
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- Pumpkins in sweet corn
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- Twin 60" corn with covers
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- Micro-chicken tractor!!
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- Nigel Palmer
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- Extract waterhemp
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- Extract corn / soybean seed |