Recent content by tarakan

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    Vertical wind turbine with two concentric rotors

    Thank you. Perhaps my design would not work and is not worth it. I made several attempts to draw it and none of my designs considered things that you mentioned.
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    Vertical wind turbine with two concentric rotors

    I am aware of the theoretical limit of the wind turbine's efficiency. I am also aware that the outer turbine/blade set would increase the wind velocity for the inner turbine. The main parameter that I think about is cost. Perhaps I am going to build a small toy at first. A DC motor and a...
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    Vertical wind turbine with two concentric rotors

    Hello. For a long time, I wanted to build a wind turbine prototype that would have two concentric rotors. The design was inspired by an automotive torque converter, used with automatic transmissions. This device would have an external rotor that would be coupled to one generator and an internal...
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    Synthetic fibers (rope) that absorb water and shorten

    That part I already had figured out: material would have been behind the valve - water seeps out - valve opens, valve opens, new water fills the material and it expands and closes the valve. A new system works on an even better principle as it is very easy to control how much water goes to the...
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    Synthetic fibers (rope) that absorb water and shorten

    I found another solution to this engineering problem. Thank you for your answers. The solution is that wet fibers would keep air from flowing through as fast as dry fibers, thus preventing the automatic bell syphon from discharging more water until fibers drie out. This device is going to be...
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    Synthetic fibers (rope) that absorb water and shorten

    The super absorbent polymer can retain water, but how easily does it let go of that water?
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    Synthetic fibers (rope) that absorb water and shorten

    Hello. I have an engineering idea, an invention. I want to make a watering valve for plants that opens the water when the soil moisture content is too low. I am looking for a material that (1) would not rot, and (2) absorb water and contract at a significant rate to open a valve (millimeter...
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    Two eccentric flywheels run on same axis

    I am trying to do math but I cannot tie abstract formulas from Wikipedia to the problem I am solving. It is too difficult. I know what those formulas stand for and I know what I want to find but I don't know how to connect the two.
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    Two eccentric flywheels run on same axis

    Maybe I don't need a counterweight. Would it still cause the flywheels to act the same throughout the range of speeds? What about the fact that the system will be allowed to vibrate and that the eccentrics will not rotate about exactly around a center point? They will rotate around some point...
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    Two eccentric flywheels run on same axis

    I am talking about Rotational vibration cancellation. I want to exclude the angular rotations from two flywheels being slightly off center. Or minimize them. The idea is to make most of the mass of one flywheel surround most of the mass of another flywheel. So their masses spin along the...
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    Two eccentric flywheels run on same axis

    I was asked to build an experimental setup for one of my friends and I did it successfully. The setup included two eccentric flywheels, spinning in opposite directions on the shafts of two stepper motors that were facing each other. I 3D printed a pair of identical eccentric flywheels and...
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    Transformer & Mesh Current Problem

    It would be nice if you give me the right solution so I can study it. I read the wikipedia article and I don't understand anything.
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    Transformer & Mesh Current Problem

    So is it (Lesser voltage - Greater voltage) / resistance that separates two voltages of two nodes? Or what is the logic in terms of what voltage is subtracted from what voltage before the division?
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    Transformer & Mesh Current Problem

    Thank you. Zero resistance - thats interesting. Far from what I would consider "ideal". Thank you, Rude Man, Thank you The Electrician.
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