Endless Sphere

The desired outcome is that we end up with the companies that produce the best vehicles at a price people are willing to pay. That's right. And as long as you capture all the of the actual cost of ownership in the sales price, that works. When you don't, you distort the market. Some examples here a...

jimw1960 wrote: ↑

Oct 15 2019 4:40pm

Save your effort, Bill. Nothing will convince this guy to move away from the denier blog-o-sphere and to consider actual peer-reviewed scientific data and studies.

I know; denial is his religion. But I figure other people are reading.

Sidwalks are the most dangerous place to ride. That's why they're called side walks not siderides. Not around here. Here it varies. On Mira Mesa Blvd, my most frequently used streed the bike lane is generally the safest place to ride, except for the half mile or so where it disappears. At that poin...

What exactly are you whineing on about now jimmy ? Trends are “shyte” ? Are they. No. Your opinions, based on false claims, are shyte. Let's take one - lack of warming in the troposphere. That was disproven years ago. The upper troposphere IS warming due to greater energy transport in water vapor (...

Here is a specific question: why it is common belief that a deeply discharged lithium battery is much more of a fire hazard than a brand new one? Because it is. That's why pretty much all consumer devices (think cellphones) have a trickle charge mode for when the cell is below about 3 volts - to re...

Says more about you than her. Great minds discuss ideas; average minds discuss events; small minds discuss people. I forget who said that. I use this as a metric when I am trying to decide at what level to discuss something. Is the guy I am talking to doubting the idea that climate change will make...

By using a boost converter after the bridge rectifier, you're essentially lowering the forward voltage needed to get current flow through the rectifier diodes and thereby increasing the proportion of the generator's period during which current will flow. Yes. And I would add that since a boost conv...

I'm a bit surprised the sides of my motor would amplify the harmonics that much, because they aren't that large. Right, but keep in mind that any membrane (even the side of a motor) is going to have a frequency it works best at. So you are hearing the frequencies that the structure is good at creat...

watchdog_timer wrote: ↑

Oct 10 2019 4:25am

I am simply rectifying the output using a full-wave bridge rectifier

That's your problem. The rectifiers provide a square wave "drive" (load) and cause harmonic noise. The noise is then amplified by the sides of the motor.

jonescg wrote: ↑

Oct 13 2019 8:51am

Yeah I'm all for innovation in renewable energy generation and dispatch, but solar thermal does not stack up.

I tend to agree. The only place it makes sense is as a booster to existing natural gas plants, where most of the physical plant is being built anyway.

Advocates claim that EVs are far simpler machines than combustion engines. But the essential “engine” for both is similarly complicated. While the EV’s electric motor is simple, its battery is a half-a-ton electrochemical machine with thousands of parts and welds, along with wiring, electronics, an...

OK, so all three negative wires all just glommed together? And that doesn't create a connection during the charge cycle? I really don't want to blow anything up. Any current flow needs a closed circuit. By opening the top of the circuit, no current can flow into the disconnected battery. Hmm, so tw...

But what do I do with the negative wires? I've seen 'ground them to the bike frame' and I've seen 'connect them to each other' neither of which I am comfortable doing without one of you guys with the enormous brains explaining how it's safe/cool/functional. Just connect them together. BTW I'd go wi...

This might not be what you are looking for, but i thought i would mention it. The cons are the fan is loud, its a boost converter so dc-dc only and power source must be a lower voltage than the battery, and it always defaults to setting 0. I have used this. It sucks. It's unstable and often will ra...

TheBeastie wrote: ↑

Oct 11 2019 8:06am

And while people are skiing in Australia on the longest snow season in history, on the other side of the world where it's supposed to be summer its now also getting the biggest earliest snowstorm in history.

How you know the climate is changing - snow in October is now big front page news.

Or something like Meanwell HLG series LED PSUs, which autoswitch between those input voltages. Those are great, but they will not automatically cut back on power when 120 volts is present (as he wants.) You could use several in parallel and only connect all of them when 240V is available. You could...

It does not matter where the words or thoughts came from.... It actually does. In the real world (not the Internet) the thoughts of a competent, experienced scientist on his field of study are actually more valid than similar thoughts from an angry Trump supporter who lives in his mom's basement. N...

Hillhater wrote: ↑

Oct 09 2019 4:52am

CLIMATE MODELS ARE BASED ON FLAT EARTH ASSUMPTION !

You didn't read the article, did you. No wonder you remain ignorant of so much of the science - you don't even read it.

The dead simple stuff is also the low value stuff. Recycling lead batteries is 99% circular because of the very high value of lead, and the desire to keep toxic metals out of the environment. And because it's easy. You strip off the case and recycle the plastic. You remove the separators and recycl...

yeah, I know its much lower specific energy density but that cycle life and high discharge/charge is enticing to make a bike from it To do a 60mph bike you are going to have to sacrifice pretty much every other spec. You'll be using li-ion of some form or another. only problem is where would you ev...

Martinel wrote: ↑

Oct 07 2019 11:51am

What do residential solar panel systems typically cost?

About $3/watt.

sendler2112 wrote: ↑

Oct 06 2019 12:58pm

By the way, I forgot to mention that all current wind and solar build out is heavily dependent on carbon fuel for the mining, refining, manufacture, and installation.

Yep. By the time the oil runs out, that transition has to be largely completed.

sendler2112 wrote: ↑

Oct 06 2019 8:14am

Many of our ideas will turn out to be wasted moves.

Agreed. Which is why we should be going full bore on all those ideas now, so we make the mistakes while energy is still (relatively) cheap and the cost of failure is low.

The classic IPCC propaganda ... You obviously didnt read/totally ignored the research results. The research results support his claim, actually. So you need sufficient generation capacity to RELIABLY power the daily demand, AND further RELIABLE generation capacity to recharge the batteries at the s...

1).. Establish beyond doubt, the real relationship between Anthropogenic CO2 and the total rise in Atmospheric CO2 Done. From Nature: ============== There are two main types of carbon isotope (an isotope being a variation in the number of neutrons in the nucleus of the atom) in the world. One is Ca...