Re: [EVDL] miniature train EV project

2020-10-22 Thread Peri Hartman via EV
ot; To: "Peri Hartman" ; "Electric Vehicle Discussion List" Sent: 22-Oct-20 3:29:09 PM Subject: Re: [EVDL] miniature train EV project Peri Hartman via EV wrote: Are you sure 24V is safe ? Yes, at low current, and it could be current limited. But in that case there's probably n

Re: [EVDL] miniature train EV project

2020-10-22 Thread Peri Hartman via EV
Are you sure 24V is safe ? Yes, at low current, and it could be current limited. But in that case there's probably not enough current to be a significant part of running the motor. On the other hand, if you aren't climbing hills, how much energy to you need ? Seems a modest battery would give

Re: [EVDL] Miles consumed for altitude

2020-10-14 Thread Peri Hartman via EV
I think elevation becomes less significant because, in most cases, the overall grade is pretty minimal. In so many words, this is essentially what was explained in a lengthy post earlier (sorry, I can't remember who wrote it). For example, if I were to drive to Snoqualmie Pass, east of

Re: [EVDL] Miles consumed for altitude

2020-10-13 Thread Peri Hartman via EV
Right, Haudy. But I think Bob was trying to come up with a simply way to factor in elevation gain. In other words, if you already know your range for driving on level ground, how much do you need to add to the energy consumption if climbing x vertical distance ? I did not try to verify his

Re: [EVDL] EVLN: This adorable little electric car is made of trash

2020-10-12 Thread Peri Hartman via EV
If you missed this, it's worth a look. It reminds me of the Sunrise in terms of weight and efficiency. Could it be turned into a production model ? total weight 420kg, 926 lbs range 220km, 136 mi mpge 180km/litre, 424 mi/gal Peri << Want to know about the effects of leaf blowers ?

[EVDL] new kind of EV unveiled

2020-10-10 Thread Peri Hartman via EV
Hyundai green-lights development of a ‘walking car’ with 4 dog-like legs By Henry Payne The Detroit News DETROIT — Rugged Jeeps and pickups can explore the great outdoors. But for those who want vehicles to travel further into unnavigable terrain, Hyundai is working on what it calls a

Re: [EVDL] EV drivers locked-out 1+hrs> network down

2020-10-05 Thread Peri Hartman via EV
Frankly, I think this is a good lesson for people who depend too much on their phones. Always carry the key, even if you don't actually use it. What happens if your phone stops working, or the battery runs down, or the servo in the car fails, or you're in a place with poor cell service ?

Re: [EVDL] Drivability

2020-09-28 Thread Peri Hartman via EV
Paul, this is all about the few times you take a road trip and need fast charging. So, let me ask you this question: for those few times, would this kind of rating be useful to you ? Peri << Want to know about the effects of leaf blowers ? https://quietcleanseattle.org/ >> -- Original

Re: [EVDL] Drivability

2020-09-28 Thread Peri Hartman via EV
Fast charging is vital. Sure, 99% of the time you don't need it, assuming you can charge at home (which is not true for perhaps 50% of the population). But for that 1% when you want to go a long distance, it matters a lot. In fact, probably none of the metrics make much difference for the

Re: [EVDL] Drivability again

2020-09-28 Thread Peri Hartman via EV
I like this. It's not the end-all statistic but it could be very useful, at least until we have ubiquitous fast charging and huge kWh batteries. Perhaps a company like Edmunds will take note and start publishing this kind of metric. Peri << Want to know about the effects of leaf blowers ?

Re: [EVDL] tesla battery fog

2020-09-23 Thread Peri Hartman via EV
ient packing, and also cell energy density improvements. On Wed, Sep 23, 2020, 09:28 Peri Hartman via EV wrote: Lots of news today on tesla's battery day. Here's one excerpt from wired: https://www.wired.com/story/where-was-the-battery-at-teslas-battery-day/ Based on the digital mockups shown

[EVDL] tesla battery fog

2020-09-23 Thread Peri Hartman via EV
Lots of news today on tesla's battery day. Here's one excerpt from wired: https://www.wired.com/story/where-was-the-battery-at-teslas-battery-day/ Based on the digital mockups shown at the event, the new 4680 cell is a lot different from the lithium-ion cells currently used in Teslas... The

Re: [EVDL] Big Oil’s green makeover

2020-09-21 Thread Peri Hartman via EV
That's pretty decent. Even a 100kW battery would charge overnight, more or less. Do you know how the handle the financial aspect ? Further, how compact can be an L2 ESVE ? Compact enough to put on a utility pole ? Peri << Want to know about the effects of leaf blowers ?

Re: [EVDL] Fw: Re: sion battery

2020-09-17 Thread Peri Hartman via EV
"Electric Vehicle Discussion List" Cc: "EVDL Administrator" Sent: 17-Sep-20 10:39:35 AM Subject: Re: [EVDL] Fw: Re: sion battery On 17 Sep 2020 at 14:28, Peri Hartman via EV wrote: We considered different battery sizes and opted for a 35 kWh battery. Thus we ensure a range of 255

[EVDL] Fw: Re: sion battery

2020-09-17 Thread Peri Hartman via EV
I was curious about the recently announced Sion and inquired about a larger battery. I did realize the car won't initially be available in the US market but I wanted to ask anyway. Also, you may recall, this car is covered with solar panels, giving it some ability to charge all day long. Even

Re: [EVDL] Big Oil’s green makeover

2020-09-16 Thread Peri Hartman via EV
-- Original Message -- From: "Mark Abramowitz" To: "Peri Hartman" ; "Electric Vehicle Discussion List" Sent: 15-Sep-20 9:18:07 PM Subject: Re: [EVDL] Big Oil’s green makeover I think that you are correct, though I would not call it a green makeover. They are investing in energy

[EVDL] Big Oil’s green makeover

2020-09-15 Thread Peri Hartman via EV
"BP is trying to reinvent itself as an energy company in the age of climate change. The company is shrinking its oil and gas business, revving up offshore wind power and developing solar and battery storage. It is even considering installing electric car charging kiosks at its gas stations,

Re: [EVDL] Leased-returned Mirai fcvs: Toyota fool cell fire sale.

2020-08-31 Thread Peri Hartman via EV
How well would they work for a conversion ? They already have the motor and controller. Dump the FC, H2 tank, the existing small battery, and put in a battery. Is there space for that ? They may not sell at $20k. Watch the price come down. Peri << Want to know about the effects of leaf

Re: [EVDL] FrankenVolt photos posted

2020-08-24 Thread Peri Hartman via EV
Since this is a list of tinkerers and DIY-ers, I'll suggest some software for editing websites. It's Bootstrap Studio. Basically, it's a visual CSS & HTML editor where you can see the effects of your changes immediately. It comes with a nice set of CSS constructs and default values, which you

Re: [EVDL] [External] EVLN: Tesla-Y feels like it’s not towing anything

2020-08-18 Thread Peri Hartman via EV
Won't it also make a large difference overall, depending on the tow vehicle ? If the trailer fits in the trailing vacuum, I would think there would be less resistance than if it were punching a new hole. I suspect this could have a larger difference than the frontal area and Cd. Peri <<

Re: [EVDL] EVLN: Tesla .de making better li-ion cells> 9/22 battery day

2020-08-02 Thread Peri Hartman via EV
Oh ! We have a date for Battery Day, now ! I'm excited, though I will put on my hype-shield glasses :) Peri << Want to know about the effects of leaf blowers ? https://quietcleanseattle.org/ >> -- Original Message -- From: "evln via EV" To: ev@lists.evdl.org Cc: "evln" Sent:

Re: [EVDL] EVLN: Zoe EV converted for use as a micro e-van r:245mi

2020-08-02 Thread Peri Hartman via EV
For browsing, you might try Brave, which has a built-in ad blocker. I found my computer overheating with the CPU fan on full bore while trying to download and handle too many video ads. Once I started using Brave, the problem went away. Peri << Want to know about the effects of leaf blowers

Re: [EVDL] Smoothing Out the dreaded Duck-Curve> EV charging strategies

2020-07-30 Thread Peri Hartman via EV
ng technologies, blanched when told that two Tesla trucks would require 2MW for charging, when his entire site had capacity for only 4 MW. - Mark Sent from my Fuel Cell powered iPhone On Jul 30, 2020, at 12:13 PM, Peri Hartman via EV wrote: Well, the article imprecisely re

Re: [EVDL] Smoothing Out the dreaded Duck-Curve> EV charging strategies

2020-07-30 Thread Peri Hartman via EV
Well, the article imprecisely referred to "high speed chargers." Do you think they are concerned by everyone using level 2 at the same time ? Second, the article mentions a cul-de-sac as an example case. I think it matters a lot where people charge. If the L3 chargers are in a residential

Re: [EVDL] Smoothing Out the dreaded Duck-Curve> EV charging strategies

2020-07-30 Thread Peri Hartman via EV
First, why do utilities think people will install level 3 chargers ? A small percentage of people really do drive that much every day, but the rest rarely do and probably wouldn't want to pay the $thousands it takes to install one. At any rate, it seems there are at least two easy ways to

Re: [EVDL] EV AC cooling efficiency vs ICE

2020-07-28 Thread Peri Hartman via EV
Perhaps that is good. However, to make a strong statement to the average ICE owner, a different comparison might be more effective. I question how many people really care how much heat is generated and wasted. Given that the ICE is not very efficient when running at low RPMs and, further,

Re: [EVDL] EVLN: $40k Nissan Ariya fwd .jp EV r:300mi

2020-07-24 Thread Peri Hartman via EV
I want a cheaper Tesla, too. But I think Willie is right. If Tesla had tried to make a cheap model sooner, they would have only sold a trickle. That's not a good way for a startup to survive. Selling into to the masses will be a low profit cut throat market. I think that time is coming for

Re: [EVDL] EVLN: $40k Nissan Ariya fwd .jp EV r:300mi

2020-07-20 Thread Peri Hartman via EV
It would be nice to see some specs. I did a bit of searching but it seems little is really known yet. Peri << Want to know about the effects of leaf blowers ? https://quietcleanseattle.org/ >> -- Original Message -- From: "evln via EV" To: ev@lists.evdl.org Cc: "evln" Sent:

Re: [EVDL] Solar powered vehicle panel requirements.

2020-07-14 Thread Peri Hartman via EV
That's pretty impressive ! I want a new chess set :) << Want to know about the effects of leaf blowers ? https://quietcleanseattle.org/ >> -- Original Message -- From: "Peter VanDerWal via EV" To: "Electric Vehicle Discussion List" Cc: e...@vanderwal.us Sent: 13-Jul-20 8:34:47 PM

Re: [EVDL] Solar powered vehicle panel requirements.

2020-07-12 Thread Peri Hartman via EV
Using a small scale wind tunnel just triggered an idea. How hard would it be to make a 3D printed model of your car ? (Pretty hard when you have to consider that it's every tiny bump that makes a difference in wind, but doable.) Anyway, having a scale model would allow inexpensive wind tunnel

Re: [EVDL] LiFePO4

2020-07-09 Thread Peri Hartman via EV
How about an answer more like, "my primary car is the EV. A few times a year, I need to go further than its range, so I use car X." Deflect the question, like a "good" politician :) We have the Leaf (2011) and it is our primary car. Even with its horribly degraded range, it is almost

Re: [EVDL] LiFePO4

2020-07-09 Thread Peri Hartman via EV
aking of personal experience driving an EV. Sent from my iPhone On Jul 9, 2020, at 10:42 AM, Peri Hartman via EV wrote: Paul, 300+ mile range isn't fictional. Or, maybe at least 250 miles. Sure, if you rarely go more than, say, 100 miles in a day you can rent something for the except

Re: [EVDL] LiFePO4

2020-07-09 Thread Peri Hartman via EV
Paul, 300+ mile range isn't fictional. Or, maybe at least 250 miles. Sure, if you rarely go more than, say, 100 miles in a day you can rent something for the exceptions. Using myself as an example, I need a vehicle that can go 200 miles RT for excursions to the mountains. I go 20-25 times a

Re: [EVDL] EVLN: EV owner tossed lrr tires4 sticky-performance= less range

2020-07-04 Thread Peri Hartman via EV
So, if you want sticky tires, you need to buy an approximately 20% larger battery. At least if you measure it with a EPA style route. Since range normally becomes an issue when one has to travel long distances by freeway, I wonder if a better test would be simply driving on the freeway at

Re: [EVDL] 2024 CARB mandates= e-trucks in, diesel out> (CA still has smog)

2020-06-27 Thread Peri Hartman via EV
Very encouraging. I wish it were even more aggressive, but this is still good. Here, in Seattle, it's visually evident that a huge amount of particulate comes from shipping. Especially during april and may, during our shutdown, the air was exceptionally clean - except in the harbor area. I

Re: [EVDL] [External] Re: George's farm truck/van EV project

2020-06-19 Thread Peri Hartman via EV
Well, I admit Tesla's truck is closer than I thought. But it can't hold full sheets - too short (I don't know the width). And, if Tesla were to extend the bed, the vehicle would get crazy long. The advantage of the minivan is I take the seats out when I haul stuff. So, it becomes a two-seater

Re: [EVDL] [External] Re: George's farm truck/van EV project

2020-06-17 Thread Peri Hartman via EV
Behalf Of EVDL Administrator via EV > Sent: Wednesday, June 17, 2020 09:12 > To: Peri Hartman ; Electric Vehicle Discussion List < ev@lists.evdl.org> > Cc: EVDL Administrator > Subject: [External] Re: [EVDL] George's farm truck/van EV project > >> On 17 Jun 2

Re: [EVDL] Hybrid buses instead of electric for PSTA in Pinellas County? Evidence for commissioners.

2020-06-17 Thread Peri Hartman via EV
ed iPhone On Jun 17, 2020, at 7:08 AM, Peri Hartman via EV wrote: Here's some background info for you, Susan. Seattle (actually Metro of King County) is in the process of converting to 100% electric by 2040. They have been testing EV buses for a few years and plan the first roll-out in 20

Re: [EVDL] George's farm truck/van EV project

2020-06-17 Thread Peri Hartman via EV
Rather than have movable panels, wouldn't it be easier to just have a deeper center channel. Plywood can be inserted vertically. The raised areas at the wheel wells can can be used for holding other things, like lumber. A bracket near the front of the cargo area can create a level platform

Re: [EVDL] Hybrid buses instead of electric for PSTA in Pinellas County? Evidence for commissioners.

2020-06-17 Thread Peri Hartman via EV
Here's some background info for you, Susan. Seattle (actually Metro of King County) is in the process of converting to 100% electric by 2040. They have been testing EV buses for a few years and plan the first roll-out in 2021. You can get an overview here:

Re: [EVDL] George's farm truck/van EV project

2020-06-16 Thread Peri Hartman via EV
ect: Re: [EVDL] George's farm truck/van EV project On 16 Jun 2020 at 23:59, Peri Hartman via EV wrote: So, if someone were to produce a long-range "useful" minivan at a "basic" price, that would be preferable. You have choices! All you have to do is move to w

Re: [EVDL] George's farm truck/van EV project

2020-06-16 Thread Peri Hartman via EV
van might be suitable. Peri -- Original Message -- From: "Lee Hart via EV" To: "Electric Vehicle Discussion List" Cc: "Lee Hart" Sent: 16-Jun-20 2:26:46 PM Subject: Re: [EVDL] George's farm truck/van EV project Willie via EV wrote: On 6/16/20 3:12 P

Re: [EVDL] George's farm truck/van EV project

2020-06-16 Thread Peri Hartman via EV
Is it too late to change your design a bit ? If you can get one of the dimensions 48" or more, then it is more useful in construction, for hauling plywood, drywall, and other sheet items. Peri -- Original Message -- From: "Gary Krysztopik via EV" To: "Electric Vehicle Discussion

Re: [EVDL] George's farm truck/van EV project

2020-06-16 Thread Peri Hartman via EV
Gary, it sounds interesting. Do you have any details to share ? Peri -- Original Message -- From: "Gary Krysztopik via EV" To: "Electric Vehicle Discussion List" Cc: "Gary Krysztopik" Sent: 15-Jun-20 11:35:45 PM Subject: Re: [EVDL] George's farm truck/van EV project I am working on

Re: [EVDL] [External] Re: [External] Re: Million Mile Battery

2020-06-14 Thread Peri Hartman via EV
Thanks, I've thought about that. But even a used Pacifica is not cheap and I'd rather hold my money for an EV van, assuming one will be available within a couple years. Peri << Want to know about the effects of leaf blowers ? https://quietcleanseattle.org/ >> -- Original Message --

Re: [EVDL] [External] Re: [External] Re: Million Mile Battery

2020-06-13 Thread Peri Hartman via EV
argeted with affordable EV transportation. George Mullineaux 3rd Shift Wrench Monkey -Original Message- From: EV On Behalf Of Peri Hartman via EV Sent: Friday, June 12, 2020 10:04 To: Electric Vehicle Discussion List Cc: Peri Hartman Subject: [External] Re: [EVDL] [External] Re:

Re: [EVDL] [External] Re: Million Mile Battery

2020-06-12 Thread Peri Hartman via EV
Your statement is well said - for the present time. But in the near future, with a battery that is substantially cheaper, the "stupid" statement might apply to a pretty broad sector where as now it applies only to those who can pay somewhat more and need the kind of vehicles produced. In

Re: [EVDL] Million Mile Battery

2020-06-09 Thread Peri Hartman via EV
ot;Peri Hartman" Sent: 09-Jun-20 3:37:37 PM Subject: Re: [EVDL] Million Mile Battery Well in current terms it means number of cycles to 80% capacity. So about 3500 cycles to 80% or something like that. On Tuesday, June 9, 2020, 5:04:55 PM CDT, Peri Hartman via EV wrote: I thi

Re: [EVDL] Million Mile Battery

2020-06-09 Thread Peri Hartman via EV
I think there are several points not being said - or asked. 1. What does "last" mean? 99% capacity, 90%, 70%. 2. What is the comparison between +10% cost for this supposed product and using only 70% capacity of the current battery in your car - meaning you overpaid by 30%. 3. How much more

Re: [EVDL] Variac and diode bridge to charge LiFEPO4

2020-06-08 Thread Peri Hartman via EV
By the way, Valance was bought out by Lithium Werks https://www.globenewswire.com/news-release/2018/02/07/1335508/0/en/Lithium-Werks-Acquires-Valence-Technologies-Inc.html AUSTIN, Texas, Feb. 07, 2018 (GLOBE NEWSWIRE) Lithium Werks B.V. (www.lithiumwerks.com), a fast growing lithium ion

Re: [EVDL] (offt) h2 won’t overtake EVs> hampered by science & CO2 lies

2020-06-04 Thread Peri Hartman via EV
uot;Electric Vehicle Discussion List" Sent: 04-Jun-20 11:02:12 AM Subject: Re: [EVDL] (offt) h2 won’t overtake EVs> hampered by science & CO2 lies I prefer not to source *either* from natural gas. - Mark Sent from my Fuel Cell powered iPhone On Jun 4, 2020, at 10:56 AM, Peri H

Re: [EVDL] (offt) h2 won’t overtake EVs> hampered by science & CO2 lies

2020-06-04 Thread Peri Hartman via EV
hoices.html -Original Message- From: EV On Behalf Of Peri Hartman via EV Sent: Thursday, June 4, 2020 10:52 AM To: Electric Vehicle Discussion List Cc: Peri Hartman Subject: Re: [EVDL] (offt) h2 won’t overtake EVs> hampered by science So glad to see an article that clearly blasts

Re: [EVDL] (offt) h2 won’t overtake EVs> hampered by science

2020-06-04 Thread Peri Hartman via EV
So glad to see an article that clearly blasts the myth of fuel cells. It's about time that people wake up and realize that you don't capture hydrogen by swishing around large sacks on top of mountains. On the other hand, to be more complete, I think the article (or some article) should also

Re: [EVDL] Diesel Brothers fined for removing emissions devices on trucks.

2020-06-02 Thread Peri Hartman via EV
Wow, that is truly disgusting. I think the best "punishment" would be to have them convert the same pickups to EV. Peri -- Original Message -- From: "Evan Foss via EV" To: "Electric Vehicle Discussion List" Cc: "Evan Foss" ; "Lawrence Rhodes" Sent: 02-Jun-20 6:34:57 PM

Re: [EVDL] : V2g for DIY EV's (economics)

2020-05-29 Thread Peri Hartman via EV
I think the real argument, at least in this case, is based on loss of revenue. If you get some of your power from solar, you aren't paying as much to the utility. But, they still need to maintain the same capacity, for the days when your solar doesn't produce. So, their costs stay the same (or

Re: [EVDL] : V2g for DIY EV's (economics)

2020-05-28 Thread Peri Hartman via EV
: Re: [EVDL] : V2g for DIY EV's (economics) On 28 May 2020 at 15:52, Peri Hartman via EV wrote: But to be fair, there is a cost to the utility company since they get less revenue but still must maintain the same level of infrastructure. Surely there's a better and fair way to do this. This

Re: [EVDL] : V2g for DIY EV's (economics)

2020-05-28 Thread Peri Hartman via EV
It really is a travesty. But to be fair, there is a cost to the utility company since they get less revenue but still must maintain the same level of infrastructure. Surely there's a better and fair way to do this. Peri << Want to know about the effects of leaf blowers ?

Re: [EVDL] : V2g for DIY EV's

2020-05-27 Thread Peri Hartman via EV
Why is this an inverter problem ? If there's no load, then there's no current through the inverter. I'm not sure what the effect is on the solar cells, themselves, but it seems that's where the problem ends up. Regardless, I assume it is not too bad for the cells since they have to be designed

Re: [EVDL] V2g for DIY EV's

2020-05-25 Thread Peri Hartman via EV
So, how does your system work ? I'm not following. Is this correct: you have a solar panel system which first powers your home, through a grid tie inverter. If there is excess power from the panels, that charges your cars. If there is insufficient power from the panels, the cars power your

Re: [EVDL] pack-aging: Tesla has V2G (Home batteries)

2020-05-20 Thread Peri Hartman via EV
ly. Maybe one advantage is simply increased battery purchases to help bring long term costs down, but that is something like a 2nd or 3rd order benefit. -----Original Message- From: EV On Behalf Of Peri Hartman via EV Sent: Wednesday, May 20, 2020 9:55 AM To: Electric Vehicle Discussion List Cc:

Re: [EVDL] pack-aging: Tesla has V2G

2020-05-20 Thread Peri Hartman via EV
At some point, we're going to need lots of grid storage. Right now, the mix of wind and solar is relatively low. But as that increases, we'll need storage capacity to span non generative periods. During transition, we can still rely on natural gas power plants and others. Eventually, we'll

Re: [EVDL] membershp required: SF Electric Cars group on Nextdoor

2020-05-18 Thread Peri Hartman via EV
I joined nextdoor a few years ago. I didn't have to provide anything except my physical address. Of course, with any social media, you get jerks who can't find tactful or mature ways to communicate. Nextdoor is no exception. But I think it's wrong for an org to have their presence hosted on

Re: [EVDL] Tesla's upcoming battery day (v)

2020-05-16 Thread Peri Hartman via EV
Is there an article or a transcript ? Peri << Want to know about the effects of leaf blowers ? https://quietcleanseattle.org/ >> -- Original Message -- From: "evln via EV" To: ev@lists.evdl.org Cc: "evln" Sent: 15-May-20 8:30:53 PM Subject: [EVDL] Tesla's upcoming battery day (v)

Re: [EVDL] Battery pack sizing.

2020-05-12 Thread Peri Hartman via EV
I think that's exactly what Lee meant. To be extreme, if you are designing an e-bike, you'll need a different ratio. Same for a semi tractor. Peri << Want to know about the effects of leaf blowers ? https://quietcleanseattle.org/ >> -- Original Message -- From: "paul dove via EV"

Re: [EVDL] Musk throws another tantrum

2020-05-11 Thread Peri Hartman via EV
Yes, I completely agree with Lee on the "free pass" statement. It's really a double standard to oppose, say, the oil industry and then give Tesla a free pass just because you happen to support some aspect of the company. Peri << Want to know about the effects of leaf blowers ?

Re: [EVDL] Musk throws another tantrum

2020-05-11 Thread Peri Hartman via EV
So many environmental considerations for both locations. The articles I've read haven't mentioned any of them. But I can think of some for Nevada: - effects on desert ecosystems - effects of solar reflectivity from developed land - effects of new traffic and road infrastructure - effects of new

Re: [EVDL] Musk throws another tantrum

2020-05-10 Thread Peri Hartman via EV
I'll throw in my opinion. While Musk may be cavalier towards OSHA and other regulations, he is certainly focused on producing an amazing product and a solid financial position. No matter how disposable his workers may be, if there's a flare-up of infections and deaths - in any state - the

Re: [EVDL] EV Digest, Vol 91, Issue 6

2020-05-07 Thread Peri Hartman via EV
vdl.org Cc: "Willie" Sent: 07-May-20 7:23:35 AM Subject: Re: [EVDL] EV Digest, Vol 91, Issue 6 On 5/7/20 8:54 AM, Peri Hartman via EV wrote: It's really supportive to hear Tim's and Larry's testimony. So often I hear or read that solar is too problematic because we need massiv

Re: [EVDL] EV Digest, Vol 91, Issue 6

2020-05-07 Thread Peri Hartman via EV
It's really supportive to hear Tim's and Larry's testimony. So often I hear or read that solar is too problematic because we need massive solar farms, which will be expensive and have significant ecological impact. (My speculation: this comes from energy company propaganda, indicating they

Re: [EVDL] POTH, Renewables and Nuclear

2020-05-06 Thread Peri Hartman via EV
unimaginative as far as real solutions go. A op-out against seeking remedies to the extreme and selective consumerism on the part of some, which creates so much waste and the extremely unequal distribution of goods in our modern global economy. Sent from my iPhone On May 5, 2020, at 9:23 PM, Per

Re: [EVDL] POTH, Renewables and Nuclear

2020-05-05 Thread Peri Hartman via EV
I haven't watched either "Planet of the Humans" nor read "Why renewables can't save the planet." Are they worth it ? In other words, do they present thought provoking ideas or are they just a rehash of what many people know ? My opinion: nothing can save the planet unless we stop increasing

Re: [EVDL] 500kW ChaoJi(CHAdeMO-v3)> faster than 300kW ccs& 250kW Tesla-v3

2020-05-01 Thread Peri Hartman via EV
a battery that can take that we would be in business On Friday, May 1, 2020, 6:54:55 PM CDT, Peri Hartman via EV wrote: This is awesome ! So, for example, you drive for 5 hours at 70 mph, using 3 miles / kWh. That’s 350 miles, or 117 kWh. To recover that at 500 kW would take 117 / 500 = .23 hours, or

Re: [EVDL] 500kW ChaoJi(CHAdeMO-v3)> faster than 300kW ccs& 250kW Tesla-v3

2020-05-01 Thread Peri Hartman via EV
This is awesome ! So, for example, you drive for 5 hours at 70 mph, using 3 miles / kWh. That’s 350 miles, or 117 kWh. To recover that at 500 kW would take 117 / 500 = .23 hours, or 14 minutes. Nice ! Now, let me find a rich uncle. Peri -- Original Message -- From: "evln via EV"

Re: [EVDL] .ie Tips for driving an electric car> (?laughable or sad?)

2020-04-28 Thread Peri Hartman via EV
I think they should write instructions on how to make toast, too. Why stop when you're so talented ? Peri -- Original Message -- From: "evln via EV" To: ev@lists.evdl.org Cc: "evln" Sent: 28-Apr-20 9:37:13 PM Subject: [EVDL] .ie Tips for driving an electric car> (?laughable or sad?)

Re: [EVDL] Communicating over "mains" (Was: Minibms?)

2020-04-28 Thread Peri Hartman via EV
See below. -- Original Message -- From: "Lee Hart" To: "Peri Hartman" ; "Electric Vehicle Discussion List" Sent: 28-Apr-20 9:10:37 PM Subject: Re: [EVDL] Communicating over "mains" (Was: Minibms?) Peri Hartman via EV wrote: The BMS for ea

Re: [EVDL] Communicating over "mains" (Was: Minibms?)

2020-04-28 Thread Peri Hartman via EV
Since this is a well defined system, in the sense that the composition of components is normally static, it seems reasonable to have a centrally controlled communication protocol. The BMS for each cell would normally be quiet and only send something when prompted by a central BMS component.

Re: [EVDL] Minibms?

2020-04-28 Thread Peri Hartman via EV
To follow up a bit, I have had several email exchanges with Tim. He has an amazing product which is open source and also available on ebay. I'm still working out my requirements. It seems every time I'm "done" the next time I look at my calcs I find a problem :) Plus, there are many options on

Re: [EVDL] EVLN: 2025 subaru, tmc Evoltis> cyber-wackadoodle/paraquat-dream design

2020-04-27 Thread Peri Hartman via EV
My focus is on the practical side. Yet, I wonder what automotive styling will evolve to. It's hard not to notice that the large front grill isn't needed any more. What will the designers do when they realize they can do something entirely different with that space ? What about the rest of the

Re: [EVDL] (no ice= clean air) % Happy Earth Day %> Consider An EV

2020-04-26 Thread Peri Hartman via EV
tug. And the success for yard tractors has not been good. We will see how BYDs next projects do. Or are you not talking about terminal yard tractors? The terminal operators own those, not drivers. Are you talking about drayage trucks? - Mark Sent from my Fuel Cell powered iPhone On Apr 25, 2

Re: [EVDL] (no ice= clean air) % Happy Earth Day %> Consider An EV

2020-04-25 Thread Peri Hartman via EV
I don't think the technology is a problem. For example, Longbeach CA is starting an e-tractor program. There are companies like BYD making them right now. I believe the biggest hurdle is the drivers. At least here, the drivers own their tractors and aren't willing to take that big a loss to

Re: [EVDL] (no ice= clean air) % Happy Earth Day %> Consider An EV

2020-04-25 Thread Peri Hartman via EV
! There are at least 3 companies bidding with various ports to electrify their tugs. Even the drivers like these new vehicles - they have aircon and stereos! :) Cheers, Peter On 4/24/20 7:46 PM, Peri Hartman via EV wrote: One thing I've noticed is that Seattle's smog has mostly disappeared. Howeve

Re: [EVDL] (no ice= clean air) % Happy Earth Day %> Consider An EV

2020-04-24 Thread Peri Hartman via EV
One thing I've noticed is that Seattle's smog has mostly disappeared. However, over our industrial area, between the shipping terminals and the railyards, there's a very noticeable brown cloud. While admittedly this is a subjective deduction, this shows that the diesel tractors which make

Re: [EVDL] custom battery

2020-04-20 Thread Peri Hartman via EV
Justin, Right, I need a high current DC contactor (not necessarily high voltage but that may be the way they come). I was planning to hook the relay to a normally-open thermostat (one that will fail in the open state) rather than have it controlled by the arduino. If the arduino fails, I

Re: [EVDL] custom battery

2020-04-19 Thread Peri Hartman via EV
Why shouldn't I use a disconnect. Or am I using the wrong term: something like a contactor that breaks the power connection if the temp rises too much. I'm figuring I'll need two: one for the load and one for the charger power. The latter should be easy: 120VAC, 15A. With 6kW or more, if

Re: [EVDL] custom battery

2020-04-18 Thread Peri Hartman via EV
Thanks for responding. Yep. about 1 min discharge - load can vary a bit. I can use pretty much any voltage, but the lower the voltage, the higher the current and I'll need huge cables and disconnects. The higher the voltage, the more cells and cell monitors I need, plus need for higher

Re: [EVDL] custom battery

2020-04-17 Thread Peri Hartman via EV
PM Subject: Re: [EVDL] custom battery Peri, That is 50C discharge, not impossible but also not trivial. The good old A123 cells could do this. The cylindrical cells are almost 10Wh and can discharge at metal melting speeds. I have a bunch of them here, in case you are interested. Cor. On Mon, Apr

Re: [EVDL] custom battery

2020-04-16 Thread Peri Hartman via EV
M Subject: Re: [EVDL] custom battery The other issue with Capacitors is that the voltage goes down quickly, and to get all the energy out you need to be able to make use of the widely varying voltage range. Jay On 4/16/20 11:00 AM, Peri Hartman via EV wrote: Ok, I did a little bit of research. A

Re: [EVDL] custom battery

2020-04-16 Thread Peri Hartman via EV
Ok, I did a little bit of research. Anyone care to double check this ? Here's one for $42 at unit quantity. 1200F, max voltage 2.7V https://www.digikey.com/product-detail/en/tecate-group/TPLH-2R7-1200SL60X74/2085-TPLH-2R7-1200SL60X74-ND/9930298 Energy is E = 1/2 CV^2 where E is joules.

Re: [EVDL] custom battery

2020-04-16 Thread Peri Hartman via EV
I'm looking at supercaps. I appreciate that a few people have suggested this, though I don't know yet whether it could be done economically. Peri -- Original Message -- From: "Jan Steinman via EV" To: ev@lists.evdl.org Cc: "Jan Steinman" Sent: 15-Apr-20 11:03:27 PM Subject: Re: [EVDL]

Re: [EVDL] custom battery

2020-04-14 Thread Peri Hartman via EV
Ok, Paul, I challenge you. You get to design my cell monitoring boards and the BMS. Then you get to put it in a closet in your house while it charges and discharges over and over. If you're living in the same house a year later, you win ! Point being, there are commercial products whose BMS

Re: [EVDL] custom battery

2020-04-14 Thread Peri Hartman via EV
n Monday, April 13, 2020, 9:51:43 PM PDT, Peri Hartman via EV wrote: Nominally 240. But it really can be anything and I can convert it to what I need. Peri -- Original Message -- From: "Alan Arrison via EV" To: ev@lists.evdl.org Cc: "Alan Arrison" Sent: 13-Ap

Re: [EVDL] custom battery

2020-04-13 Thread Peri Hartman via EV
most super-capacitor territory. What voltage is needed? Designing and implementing a BMS is something even EE's have trouble with. However, if the voltage is low enough, it makes it much easier. Al On 4/14/2020 12:33 AM, Peri Hartman via EV wrote: Hi, I need a battery with about 150Wh and a d

[EVDL] custom battery

2020-04-13 Thread Peri Hartman via EV
Hi, I need a battery with about 150Wh and a discharge rate of 8kW for up to a minute or so. I've spent a few hours searching and there doesn't seem to be anything on the market that fits this. There are, of course, higher capacity batteries that can deliver 8kW, but that's not what I'm

Re: [EVDL] EV Minivan (Ohio EV tax reduction)

2020-04-04 Thread Peri Hartman via EV
I agree, using a pickup truck for hauling around supplies and tools doesn't make sense in many cases. Exposed to the weather, theft, and higher to lift things in and out. I have a 20 year old minivan which I use for hauling. I can get 10' lumber in it and close the back. 16' is fine except on

Re: [EVDL] Ohio EV tax reduction

2020-04-03 Thread Peri Hartman via EV
Hmm. 15000 miles at 12mpg. That's 1250 gallons. At nominally $3/gal, that's 3750. On gasoline cost alone, 10 years would buy you a nice EV - model 3 or Bolt, for example. Ok, I'm not being quite fair since you do have to pay for electricity. But you also would have less maintenance. You know

Re: [EVDL] GM,Ford’s 5%-EV-production-plans are a bad-joke on u.s.

2020-03-26 Thread Peri Hartman via EV
True, but if Tesla keeps growing (and others), they'll need to adapt or be darwined. Peri -- Original Message -- From: "Peter C. Thompson via EV" To: ev@lists.evdl.org Cc: "Peter C. Thompson" Sent: 26-Mar-20 3:11:53 PM Subject: Re: [EVDL] GM,Ford’s 5%-EV-production-plans are a

Re: [EVDL] GM,Ford’s 5%-EV-production-plans are a bad-joke on u.s.

2020-03-26 Thread Peri Hartman via EV
Well, I think it's actually not so bad. 5% isn't a lot, but it's a ten-fold increase over this year, and that's a big deal. Remember, the giants move slowly. I will speculate that, if Tesla keeps taking high-end market share and GM's and Ford's EV sales do well, they'll increase more. Peri

Re: [EVDL] leaf 2011-12 or 2113

2020-03-22 Thread Peri Hartman via EV
Belated response :) If you really want to save money, the 2011 is probably fine for your needs. But bear in mind the battery will be shot and, in winter, you'll probably only get about 20-30 miles range, depending on temperature and how much cabin heat you use. The 2013 has a battery

Re: [EVDL] OT Possible way to get rid of COVID-19 , colds, flu...

2020-03-19 Thread Peri Hartman via EV
In support of Jerry, I found this medical reference. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4703655/ In brief: to supress fever - makes the subject more confortable, reduces metabolism (but this isn't proven to be beneficial), acute brain injury. to "let it ride" - enhances immune-cell

Re: [EVDL] OT Possible way to get rid of COVID-19 , colds, flu...

2020-03-19 Thread Peri Hartman via EV
I, also, think this is good advice. However, be careful not to elevate your temperature too much or you will cause damage to your cells, particularly in the brain - starting around 104F, I think. Peri -- Original Message -- From: "jerry freedomev via EV" To: "Electric Vehicle

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