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Comment Re:Limits of VFDs (Score 1) 370

Drag races are irrelevant to the statement. As I said, pulling the boat out of the lake is not a problem. Pulling the camper up the hill on I-80 east of Pendleton OR is the problem. Or worse, heading into the mountains pulling the trailer on a curvy dirt road? At low RPM you will need high current, how long until the motors overheat?

As to the other issue, so I might have an issue charging at Grangeville ID the driving down WhiteBird hill. As long as the normal brakes are still adequate to the task no problem.

Comment Re: These Laws Don't Prevent Parents From Parentin (Score 1) 159

Firearms can not be bought online legally. You can pay for it online and have it shipped to a local FFL dealer, and that dealer will then do the background check and all the required paperwork.

Some states do allow you to buy alcohol online. I've never done that so you'll have to find a place and read the FAQ.

Comment Limits of VFDs (Score 1) 370

In a EV car you can get away without a transmission. In a truck I have my doubts. Getting torque at low speed requires high currents. That will heat the motor windings quickly, I-squared R losses are a bitch. A locked motor burns up quick. That's why they have thermal overloads.

Industrial Variable Frequency Drives have a variety of settings to use to get more torque at low rpm without burning up the motor. But the ability to do this is limited. It works for starting conveyor belts or for pulling a boat out of the water but not for much longer.

Although the automatic in my 2020 truck is much better than the one one in the 2008, (that one went spastic on any reasonably steep hill) it still tends to to be in the wrong gear quite often. Last summer I had to take manual control bringing the camper down the steep dirt road as the transmission left to itself would have had me running about 60 mph when 15 to 20 was the correct value. Riding the brakes that long is never a good idea.

Question for an EV owner, on a long downhill do you lose regenerative braking when the battery is fully charged?

Comment Re:Quality of PhD students (Score 3, Interesting) 56

Methanol fuel cells already exist. And of course it does burn too, you could use it fuel a combined cycle gas turbine generator too.

And you can Fischer-Tropsch methanol into anything you want.

How long does the catalyst stay clean and how hard is it to regenerate are the next questions.

Comment Re:Yeah... thanks but no thanks :-) (Score 1) 127

I remember NE2000 cards. They were notable in that they worked quite reliably.

I also remember stringing together the 10-base-2 coaxial cable strings and remembering the termination resistors on the ends. Twisted pair within the building, coax between the buildings as it had twice the range.

Comment Re:Many landlines aren't (Score 1) 142

Base station cellular is a good idea in rural areas. The antenna is outside, and since it is far away from you it can transmit at higher power.

My first cell phone had a very marginal signal and I had to get an amplifier and outdoor directional antenna. Then they upgraded to 4G, but the new antenna was on the other side of the hill. So I had to change companies to the one that had a shiny new 4G tower on this side of the hill.

No there will never be real 5G here. There is no point.

Comment Re:Landline vs. cell phone (Score 2) 142

Sorry to dispute that assertion, but the landline not working is why I got a cell phone. The boobs in charge couldn't, or more likely wouldn't fix it.

And fiber isn't fail safe either. The fiber optic hub at the corner is powered by the power line. The hub has its very own meter. So when the power goes out you can't use the fiber system to notify the power company. Putting my switch on a UPS would only be useful to allow my laptop to link to my tablet, in other words, not useful.

The reverse is true too. If the cell network goes down then you can't use it to tell the cell phone company. Redundant systems are good.

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