He already does that :)

Not if you're using oscillation/deflection to harvest energy - put a stick the long way in your tower, tune the stick so it produces the vibrations you want, then you can use something like an LTC3588 (I've used these several times, they have worked well in many experiments) to simply hook up a piezo/strain transducer which will produce power directly without minimizing flow. In fact, you want to encourage throughflow so your source stays as constant as possible. 🙂 copypasta for the LTC3588: The LTC3588-1 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric, solar, or magnetic transducers. An ultralow quiescent current undervoltage lockout (UVLO) mode with a wide hysteresis window allows charge to accumulate on an input capacitor until the buck converter can efficiently transfer a portion of the stored charge to the output. In regulation, the LTC3588-1 enters a sleep state in which both input and output quiescent currents are minimal. The buck converter turns on and off as needed to maintain regulation. Four output voltages, 1.8V, 2.5V, 3.3V and 3.6V, are pin selectable with up to 100mA of continuous output current; however, the output capacitor may be sized to service a higher output current burst. An input protective shunt set at 20V enables greater energy storage for a given amount of input capacitance.

@@russellzauner I'm just starting with this sort of thing & I'll probably be using PC fans for now. But I'll have to read into all that

@@russellzauner Was not familiar with that chip, thanks much for the post! I'll have to get me a few of those... That sounds like a very clean and simple way to harvest energy off vibration.

Thank you! Cheers!

Many thanks!

In the second idea u r basically talking about vertical axis turbine placed inside the structure that supposed to create vortex, am i right? But imo it would be inefficient compare to HAWT so ur first idea does make more sense, though i don't fully understand it.

@@yash_kambli HWAT is basically planned for opened area. But I think we can found good solution. These are just ideas now, but if lot of people start to thinking in one direction then maybe we could create something useful. ;)

it's not my idea I am just copying someone else - it is just plain awesome when it works

Something to consider would be the additional weight of the rubber strip. It would make it so that there also needs to be more air pressure required to push the flap up.

@@justinweatherford8129 You could solve this by adding the rubber strip to the panel above it. So the rubber would run along the opposite side of the board in the same place as the supporting bar/hinge. Not sure I've explained it well, but if the rubber was along the axis, it's weight wouldn't affect the flap movement as much?

Or simply make each flap one-way rotational

@@justinweatherford8129 Doesn't have to be rubber. Just has to cussion. May look a little tacky but what about a strip of bubble wrap or an old Amazon bag?

@@MrMatthewPR to get the seal he was looking for, it would require a rubber seal around the entire flap. Having just a rubber seal along the top or bottom would actually let more wind through. What I am thinking about doing is actually going to reduce the weight of the flaps by reusing scraps from plastic containers.

link?

@@angelusmendez5084 read something where KZfaq is going to have a way to link to other KZfaq creators. Not sure when that's coming out or what the rules around it will be

​@@colleenforrest7936 possibly the new handles that are coming around November time.

@@angelusmendez5084 got it, thanks. Porn links and the like are everywhere though.

The establishment pushes degenerate things. Get used to it. We are heading into weimar like conditions

A Venturi on the top with a vane to keep it aligned with the wind and the exit of the tower coned after the turbine entering in the suction part in the middle for added speed of exit...

that's brilliant

@@maw9916 Intriguing. My fluidics are too rusty to predict whether this would outweigh the reduction of post cone pressure drop this would cause. Might be down to turbine design.

@@terranovarain6570 Thanks!

Ply wood today is terrible compared to previous stock you would need to use marine ply or robs favourite builders board if you want it to last

yeah "his not moan comment" was ludicrous, no silent night with the current design ...

It reminds me of a Dovecote, lots of those still around and nobody complains they look bad...

We have the Erasmus Darwin museum here in Lichfield, Pete. Come for a visit! The Cathedral is lovely too! :)

Good stuff for the brain as always! Can't wait to see it in action Robert. In terms of design "form" and "function" it's quite pleasing to the eye, as a hand-crafted cupola. Impressive work.

@Jeffrey Wolsieffer Erasmus, grandfather of Charles Darwin, was a physician and inventor who wrote up his ideas exclusively in rhyming couplets. He was part of the Lunar Society of Birmingham, a monthly think tank that originated most of the technologies that formed the industrial revolution. He staunchly supported the idea of evolution long before his grandson set out to gather worldwide evidence for it. And he was a pioneer in feminism, financially underwriting Britain's first girls' schools. 14 children by 3 mothers including 2 illegitimately from one of the nannies. And he was the inspiration for Shelley's Doctor Frankenstein. In every way, Erasmus Darwin was larger than life!

Block the top off and direct the air down seems like a plan but it would lose the draw effect from the wind exiting at the top. The aero mine works totally on that draw.

@@davidsoulsby1102 Fair enough. I do wonder though if there's a way to configure the vents (with counterweights perhaps to allow them to open in the direction of the exit.

@@alantupper4106 small torsion springs might do, but counterweighting for vertical flow would require the lower weights to be on the windward side of the flow in this design. Might be counter productive unless there was a hollow bezel to house protected counterbalance weight for each vane.

nice one mate - cheers

@@ThinkingandTinkering to adding optimal value to this I was thinking about a wind turbine powered car they tested a few years back that went faster than the wind speed by using a sailboat design that hits the wind at an angle increasing the lift an reducing the drag. They had it geared to the tires what if you had multiple fans/generators stacked geared in sync with that sailboat design blades in that tower, by theory once you get the bottom one moving the optimal speed the gearing to the next should start to pull creating suction to the first and in series the next even more an so on creating a self driven wind tunnel pulling the air from the sides an out the top once started by the wind. Any thoughts or holes you see in this theory?

The time you spend for create this is depend how good you are in handwork, your tools and what material you take. (wood, plastic, thin steel or others)

remember too ,'Rob time' is different to normal human time , you need to be fuled by the right mix of tea ,or char as it technically described , a bit of nicotine ,and whistling apparently helps too ,[ gas laws apply here ,O2 uptake etc].so double his time to get a realistic normal human chronological expenditure .

@@scantrain5007 yes, sure it depends on availablity and expertise.

Hope you enjoy it!

Good thought.

And any machinery (turbines etc) would be below Rob's/Darwin's device and out of the direction of the wind

After some thought: I don't think this is much of a problem on at larger scale. The benefits from 2 are likely too small at a larger scale to matter. Will play around with this anyways so things like steel can be used. (wood looks soo nice though!) the design in the video seems to be the best.

Glad you like it!

yeah it is getting crazy expensive!

cheers mate

cheers mate

You are so welcome

Are those the things on top of the English parliament? (Genuine question, nothing to do with the escape of hot air from the chamber 😀 )

cheers mate

cheers mate