Posted by Turkeyfoot on January 04, 2021 at 09:41:39 from (174.234.14.63):
In Reply to: Wheat shipment posted by sourgum on January 03, 2021 at 21:41:20:
I think there's only one domestic mode of shipment that beats shipping/barge in terms of energy efficiency, and that is pipeline. Of course pipelines come with their obvious limitations and problems. I've wondered if some clever engineer ever looked into ways to utilize the pipeline network for moving non-traditional goods such as mail or parcels by pipeline. You could stick them in a fluid-proof bag and adjust the buoyancy with air so they'd float. Then you'd have to figure out how to get the bags past the pumping stations. The closest thing I know of to this is Elon Musk's plan to have a pneumatic tube (Hyperloop) that carried people in California,
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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