Search found 1793 matches

by billvon
Feb 21 2019 12:08am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 739
Views: 46194

Re: Tesla Model 3

You keep ignoring my point about interstate and other travel AWAY from your home charging point. You would need 20x the charging points to service the same traffic we have now on those routes if it were to go all electric. No, we don't. We would need 20x the charging points if you could not charge ...
by billvon
Feb 20 2019 2:51pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3573
Views: 126160

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Hillhater wrote:
Feb 20 2019 5:12am
Did you catch the point that they are one of the biggest players in the solar market, particularly in California, with busines forcast to grow 30% this year
Yep. And my advice stands - don't do it. Even if it's really popular to do.
by billvon
Feb 20 2019 2:50pm
Forum: E-Bike General Discussion
Topic: Folding Solar Charger
Replies: 4
Views: 171

Re: Folding Solar Charger

I big panel would be bulky but a number of smaller 6 or 12 volt panels could be mounted on cloth or flexible plastic such that it would fold up into a compact package. When unfolded it would need something to keep it lined up. Well, your first choice is between rigid panels or flexible (amorphous) ...
by billvon
Feb 20 2019 2:45pm
Forum: EV Business World
Topic: Tesla Model 3
Replies: 739
Views: 46194

Re: Tesla Model 3

No, I don't believe 263 million vehicles will be on the road at once. The point is that being a rare Tesla or EV owner now might seem fine but this glosses over the infrastructure generating and transmission scaling issues to go full scale electric. I don't think there's any glossing over. To switc...
by billvon
Feb 20 2019 2:15pm
Forum: EV Business World
Topic: Tesla Model 3
Replies: 739
Views: 46194

Re: Tesla Model 3

And 2/3 of the country is not on or near a major highway. Have you ever done a road trip in flyover country or Utah, Wyoming, etc? Yep. Every year my wife and I used to go to Lost Prairie, Montana for a skydiving boogie. Take a look at where it is on a map; it's 40 miles from the nearest town (Kali...
by billvon
Feb 20 2019 1:41pm
Forum: EV Business World
Topic: Tesla Model 3
Replies: 739
Views: 46194

Re: Tesla Model 3

You just expertly made my case that they are great commuter/city cars, but not so much for long distance travel. And, no, electricity lines and infrastructure does NOT run everywhere. This is a huge country. Actually they do. Take a look at that map. Every 100 miles on most major highways in the co...
by billvon
Feb 20 2019 12:42pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Good for the environment? Maybe not so much
Replies: 8
Views: 444

Re: Good for the environment? Maybe not so much

This isn't just a scooter problem. It's the fact that the cost of disposal and production of goods is extremely out of whack with the cost to the environment. Yes. All those "hidden costs" are a primary reason why efforts at environmental remediation often fail - because people don't see the true c...
by billvon
Feb 20 2019 12:38pm
Forum: EV Business World
Topic: Tesla Model 3
Replies: 739
Views: 46194

Re: Tesla Model 3

I don't see how the charging infrastructure can ever be as ubiquitous as gasoline stations, especially here in the USA. Think of a busy Interstate highway with literally thousands and thousands of gas pumps and you still have to wait to access one sometimes. Right. Now count the number of outlets a...
by billvon
Feb 20 2019 12:37am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3573
Views: 126160

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Hillhater wrote:
Feb 19 2019 11:05pm
What happened when i bought a house with Solar already installed..
Never buy a house with a PPA solar system. Insist the owner either remove it or buy it from the provider before the sale completes.
by billvon
Feb 19 2019 6:12pm
Forum: E-Bike Non-hub Motor Drives
Topic: Schwinn cruiser a BBSHD candidate ?
Replies: 20
Views: 465

Re: Schwinn cruiser a BBSHD candidate ?

I also have two e-bikes now . One is an BTN Eunorau AWD Fattie and n E-Torque City cruiser . Now since that Schwinn doesn't have brakes and is a free wheeler I'm thinking of the Kent Bayside . Theres one on sale here for$59 . I think I'll go pick it up and get started . If/ when it falls apart I'm ...
by billvon
Feb 19 2019 4:32pm
Forum: E-Bike General Discussion
Topic: 12 turn Hub-motor vs Mid-drive for hill climbing ??
Replies: 7
Views: 304

Re: 12 turn Hub-motor vs Mid-drive for hill climbing ??

I think someone should do a comparison test between a mid-drive and a hub motor with 10 to 12 turn winding with or without gears. How much energy would it actualuy use in a given hill climbing compairison. Same total combined weight, speed and steepness of grade? With the price of batteries being s...
by billvon
Feb 19 2019 12:40pm
Forum: General Discussion
Topic: 110V AC e-bike
Replies: 16
Views: 601

Re: 110V AC e-bike

My idea is to use 12V batteries , solar power inverter 12V DC to 110V AC and 110V AC motor from dismantled power drill . Motor is 800w / 900 rpm . That will be mid-drive A few notes: Going from 12V to 120V back to some intermediate voltage is wasteful. Use a higher voltage battery. If you have acce...
by billvon
Feb 16 2019 7:01pm
Forum: Battery Technology
Topic: 80% charge in one hour?
Replies: 27
Views: 688

Re: 80% charge in one hour?

Chalo wrote:
Feb 16 2019 6:49pm
You just made the case for a single fuel consumption limit for all road vehicles. Which would also be fine by me.
Result - more traffic and more fuel consumption. Again, unintended consequences of a well meaning effort.
by billvon
Feb 16 2019 6:40pm
Forum: Battery Technology
Topic: 80% charge in one hour?
Replies: 27
Views: 688

Re: 80% charge in one hour?

So have a different per-vehicle economy standard for commercial trucks and industrial vehicles, and exempt emergency vehicles from the requirements. The point is to make all, not just some, of the vehicles within a given class conform to standards. If that happened you'd see the law of unintended c...
by billvon
Feb 16 2019 6:31pm
Forum: Battery Technology
Topic: 80% charge in one hour?
Replies: 27
Views: 688

Re: 80% charge in one hour?

I am curious what makes you think an 18 wheeler can't be a hybrid, since diesel locomotives have been from the beginning? No reason at all. I was saying that it would counterproductive to require 18 wheelers to get the same MPG as a car (i.e. I was arguing against applying one standard to "every si...
by billvon
Feb 16 2019 1:06pm
Forum: Items Wanted
Topic: Looking for CALB 180ah cells
Replies: 0
Views: 67

Looking for CALB 180ah cells

Anyone have a good source for 180ah CALB LiFePO4 cells in San Diego/Socal? I need 16 to replace the house bank.
by billvon
Feb 16 2019 1:04pm
Forum: Battery Technology
Topic: 80% charge in one hour?
Replies: 27
Views: 688

Re: 80% charge in one hour?

That makes no sense. We have fuel economy requirements; we only need to keep them updated. And they need to apply to every single new vehicle instead of entire production fleets. How you meet economy, emissions, and safety requirements should be irrelevant. Would be impractical to meet them for thi...
by billvon
Feb 16 2019 12:40pm
Forum: Battery Technology
Topic: 80% charge in one hour?
Replies: 27
Views: 688

Re: 80% charge in one hour?

Warren wrote:
Feb 16 2019 11:26am
I think that requiring that every vehicle be a hybrid has been the logical thing to do for a decade, at least.
I think a better thing to do is require cars to average a certain fuel economy, and gradually increase that fuel economy. In 20 years, gas powered hybrids may seem like gas guzzlers.
by billvon
Feb 16 2019 12:33pm
Forum: Battery Technology
Topic: 80% charge in one hour?
Replies: 27
Views: 688

Re: 80% charge in one hour?

The actual capacity of that 75kw battery will be greater by about 10% or even more. To be more accurate, the car will only let you use about 90% of that 75kw. It behooves manufacturers to advertise the highest capacity battery they can, so they do. Software then prevents 100% discharge. My criticis...
by billvon
Feb 14 2019 11:28pm
Forum: Motor Technology
Topic: HyMag tech boosts magnetic flux density of permanent magnets by 10-30%
Replies: 25
Views: 1152

Re: HyMag tech boosts magnetic flux density of permanent magnets by 10-30%

This just in today.. Argonne lab has invented a new kind of magnet that uses far less rare earth materials and can increase power per lb. on our motors. This might lead to some EV makers backing away from induction motors.. as permanent magnet motors will get a significant edge in power density and...
by billvon
Feb 14 2019 2:11pm
Forum: E-Bike Technical
Topic: Tested Brainpower KSDLM25 1000W Sine Wave Controller
Replies: 5
Views: 278

Re: Tested Brainpower KSDLM25 1000W Sine Wave Controller

Sine wave lookup table? Never heard of it. :-) I've heard of "modified sine wave" which is what you have described. Modified sine wave is a marketing term used by inverter manufacturers that means square wave with an "off" period in between. Trapezoidal drive is more common, and that's what it look...
by billvon
Feb 14 2019 12:53pm
Forum: Battery Technology
Topic: 80% charge in one hour?
Replies: 27
Views: 688

Re: 80% charge in one hour?

The only way I can get an 80% charge into a Li battery is if I start with the battery fully discharged or near enough. Sounds like you are saying that if you start with a battery charged to 50% you can't get another 80% worth of charge in it. Yes, that's true - but sorta obvious. With a 10% residua...
by billvon
Feb 14 2019 12:42pm
Forum: Food and Drink
Topic: AB InBev buys Corona
Replies: 6
Views: 1488

Re: AB InBev buys Corona

Hezinaxu wrote:
Feb 14 2019 11:50am
Am I the only one person, who thinks Corona is too overrated...? :confused:
After learning more about beer, Corona, Negro Modelo, Pacifico, Budweiser, Coors, Miller etc etc are all overrated. There are much better examples of beer out there.
by billvon
Feb 14 2019 12:54am
Forum: General Discussion
Topic: Need help choosing a BLDC hub motor controller-Torque mode
Replies: 13
Views: 443

Re: Need help choosing a BLDC hub motor controller-Torque mode

Rimwithbrim wrote:
Feb 13 2019 8:28pm
72-84v and about 5-10kw depending on motor. Expected amperage will be in the neighborhood of about 100-150.
Phaserunner would get you about halfway there. Good to about 90 volts and peak phase current of 96A (~45A continuous.) You might consider a _very_ well heatsinked version.
by billvon
Feb 14 2019 12:50am
Forum: E-Bike Technical
Topic: Why do Fat-tires have higher rolling resistance?
Replies: 27
Views: 1141

Re: Why do Fat-tires have higher rolling resistance?

amberwolf wrote:
Feb 13 2019 2:48pm
Or just design the frame for hanging the panniers like that (There are some already around that do this, but I don't recall any FS ones)
That would be great. I'd love to find a frame like that (along with room for batteries down low.)