Power in Flux

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  1. After following the "review" (later revealed to...

    After following the "review" (later revealed to be a simulation of what they thought might happen in some situation that never happened) Clarkson and Company did on the Tesla Roadster for Top Gear,...
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    I ran across this recently, and have only...

    I ran across this recently, and have only fast-forwarded through it. I need to watch the whole thing and the related videos, but it looks like he's using 18650s out of used laptop batteries for home...
  3. And it passed :-) Getting a 16KW array next...

    And it passed :-)

    Getting a 16KW array next spring :-)
  4. Floridians - Don't forget to vote today - Prop 4.

    Voter initiative Proposition 4 is on the ballot today and is designed to encourage investment in solar power by making solar panels exempt from the state's personal property tax. As it would apply to...
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    Nicely done. Sent from my Nexus 5 using...

    Nicely done.

    Sent from my Nexus 5 using Tapatalk
  6. Thread: Today, I ...

    by billmi
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    194,087

    Sadly, no. They were running return activated...

    Sadly, no.

    They were running return activated sludge pumps in a wastewater treatment plant (pumping water from the digesters to the influent, to seed it with microbes). Still awesome thought to...
  7. Thread: Today, I ...

    by billmi
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    194,087

    Tuned a PID feedback loop and used it to control...

    Tuned a PID feedback loop and used it to control a bank of 480v motors.
  8. Thread: Today, I ...

    by billmi
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    194,087

    Forgot that the motorcycle's 72V 15A charger and...

    Forgot that the motorcycle's 72V 15A charger and the shop-vac were plugged into the same circuit. Thank you, circuit breaker, for doing your job.
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    Sticky: If I recall correctly, I've also seen the term...

    If I recall correctly, I've also seen the term "continuous" used rather loosely in the past, with CALB using it to describe a 50% duty cycle, alternating - 30 seconds discharging at the c-rate and 30...
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    I've been running IRC GP-1s on my DR200s, which...

    I've been running IRC GP-1s on my DR200s, which are the same street/dirt ratio as the stock Trailwings. Since we ride mainly street, the front tires seem to wear faster, with the knobs getting a...
  11. Good luck with that. I bought a charger from them...

    Good luck with that. I bought a charger from them (which turned out to be a Kelly charger with the Kelly logo literally cut out of the label) that was dead from day one. "Sharon" referred me to a...
  12. Nope, they used lead-acid batteries, and then...

    Nope, they used lead-acid batteries, and then switched to NiMH.
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    Now here's some more functional 3D metal printing...

    Now here's some more functional 3D metal printing (laser sintered metal powder): http://gizmodo.com/nasas-3d-printed-rocket-injector-test-a-beautiful-inf-746527818
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    The fact that it stays liquid after printing,...

    The fact that it stays liquid after printing, with just a thin solid shell seems pretty limiting for practical applications. Who knows where it will lead, though. One advancement here, another there,...
  15. That's a DR-200SE frame - not much battery room...

    That's a DR-200SE frame - not much battery room there at all. I just consulted with the guy who owns DR200SE.net to verify that.
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    How could the federal government achieve the...

    How could the federal government achieve the goals set out in the petition? The only way I can see that is passing federal legislation prohibiting states from preventing automobile manufacturers from...
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    Sadly, the Revolver is a design project not an...

    Sadly, the Revolver is a design project not an engineering project, which means it doesn't need any basis in the physics/engineering limitations of the real world. Following links from the article,...
  18. And what's so bad about that? Clearly, he's had a...

    And what's so bad about that? Clearly, he's had a lot of fun with electric motorcycles, and is doing the same with his plane. More power to him.
  19. Thread: Game changer

    by billmi
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    Elio Motors (eliomotors.com) enclosed reverse...

    Elio Motors (eliomotors.com) enclosed reverse trike looks promising in that: A-They're serious enough that they worked a deal to buy GM's old factory in Shreveport B-They've got a design that they...
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    He doesn't need much slack because he has...

    He doesn't need much slack because he has superior geometry.

    On most motorcycles when the rear suspension flexes, the rear sprocket moves relative to the front sprocket. Since the distance between...
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    Neither can I. I believe a misinterpreted Ted's...

    Neither can I. I believe a misinterpreted Ted's post where he talked about BMS protecting the cells from overdischarging (which LVC does) and mushed that together in my brain to mean "discharging at...
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    Since motor controllers usually have a current...

    Since motor controllers usually have a current limiting function, having that same function in a BMS seems a bit redundant to me.
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    So, my workflow has been - Design in Lightwave,...

    So, my workflow has been - Design in Lightwave, output as STL, slice with Slic3r, do any manual control of the printer (for cleaning, testing, etc.) and dumping the G-Code to the printer with...
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    Hopefully you did not miss the story of "Wrong...

    Hopefully you did not miss the story of "Wrong Way Corrigan," the second solo flier to cross the Atlantic. Lindberg was a national hero, and to protect his status, Corrigan couldn't get a flight plan...
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    Except if the weather lightens up he'll make Jax...

    Except if the weather lightens up he'll make Jax before I could. I dropped some e-mails to some media outlets up that way with links to his FB page and your blog that nicely summarizes the EV drama...
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