Re: [EVDL] Peukert # with Lithium Batteries

2014-05-08 Thread Lee Hart via EV
Ben Apollonio wrote: With all due respect to Lee and his expertise in so many areas, I believe this is incorrect. Lithium Ion has a nearly unity coulometric charge/discharge efficiency. Although high discharge rates depress the voltage more, and therefore cause your battery to reach empty

Re: [EVDL] Peukert # with Lithium Batteries

2014-05-08 Thread Lee Hart via EV
Man, this Peukert stuff is still confusing people! :-) Bill Dube wrote: The internal resistance of a battery does not change its Ahr capacity. Not even a tiny amount. That is correct. AMPhours are not affected by internal resistance. WATThours are, because internal resistance causes a

Re: [EVDL] Peukert # with Lithium Batteries

2014-05-08 Thread Lee Hart via EV
From: Lee Hart Just be aware that this is not a true resistor, and not constant. It is the combined net effect of all the internal processes; mechanical, chemical, state of charge, temperature, aging, etc. Jan Steinman via EV wrote: Which is where Mr. Peukert came in the door, right? Pretty

Re: [EVDL] Miles Remaining

2014-05-09 Thread Lee Hart via EV
Willie2 via EV wrote: The Leaf instrumentation is complete crap. The Leaf is a wonderful car. I've driven one! But it's designed for Mr. and Mrs. Nontechnical, who think all that 'lectrical stuff has something to do with watting vaults to store currants at 'ome. Focus groups said they want

Re: [EVDL] Miles Remaining

2014-05-09 Thread Lee Hart via EV
Peri Hartman via EV wrote: If only, in their focus groups, they had asked the question: would you rather have an accurate remaining-kwh meter or an fairly inaccurate remaining-miles meter? But most of the people in the focus group would probably have said, A killerwhat? That sounds dangerous!

Re: [EVDL] Miles Remaining

2014-05-09 Thread Lee Hart via EV
Michael Ross via EV wrote: You could give car owners a learning aid like I have - two batteries. Aha... you may have something there! :-) Remember the old VW beetle gas gauge? There wasn't one! Two fuel lines went to the gas tank in two places; almost empty (about a gallong left), and

Re: [EVDL] Miles Remaining

2014-05-09 Thread Lee Hart via EV
Peri Hartman via EV wrote: Well, it doesn't have to be called a kwh meter. I could be called a energy-remaining or, to use the term incorrectly, a power-remaining meter. Or a fuel gauge. :-) Given the low cost of graphics displays, how about an icon that looks like a battery? Empty (0%

Re: [EVDL] Battery post - Best Practice

2014-05-09 Thread Lee Hart via EV
Roger Daisley via EV wrote: I am going to give the Costco 6v golf cart Batteries a try. I just hauled home 18 of them. (56 lbs, ea.) 56 lbs? That's suspiciously light. My Sams Club cheapie 6v batteries were 61 lbs each. -- We ascribe beauty to that which is simple, with no superfluous

Re: [EVDL] Battery post - Best Practice

2014-05-09 Thread Lee Hart via EV
Roger Daisley via EV wrote: CORRECTION: Weight is 64 lbs. Ah! That's MUCH better! -- We ascribe beauty to that which is simple, with no superfluous parts; which exactly answers its end; which stands related to all things, and is the mean of many extremes. Ralph Waldo Emerson -- Lee Hart's EV

Re: [EVDL] Sitting here with Bruce in the Hospital Friday 6:30 PM 5/9/14

2014-05-09 Thread Lee Hart via EV
Gail Lucas via EV wrote: Danny, If you are still with Bruce please give him my best. Tell him I will call again next week if we don't start seeing email from him. Yes! That goes for me, too. Tell him we all miss our EVangelist! You know, they say we all get the angel we deserve. :-) -- We

[EVDL] Vectrix bankruptcy auction June 18

2014-05-10 Thread Lee Hart via EV
I just received the following email on another list. Since it should be of interest to EV'ers (especially if they live in the Massachusetts area), I'm posting a copy of it here: The Vectrix Electric Motorcycle Shop in Bedford, MA is now in Chap. 7, liquidation. The auction will be on June

Re: [EVDL] Vectrix bankruptcy auction June 18

2014-05-11 Thread Lee Hart via EV
Chris Tromley via EV wrote: I do remember a website with a brief but clear description of it along with coverage of some of Cedric's other achievements. This was before the Vectrix patent. There was an EVDL member whose name I forget (member of the British Battery Vehicle society, had an

Re: [EVDL] Miles Remaining

2014-05-13 Thread Lee Hart via EV
Jan Steinman via EV wrote: Anyone recommend a nice bi-directional DC kWH meter? I like the Cruising Equipment E-meter, Heart Interface Link-10, and now it's the Xantrex Link-Lite something-or-other. I have the older ones, and found them very accurate and reliable. I haven't tried any of the

Re: [EVDL] EV Digest, Vol 19, Issue 19

2014-05-14 Thread Lee Hart via EV
Jan Steinman via EV wrote: Thanks for bringing that to my attention, Peter, although ±4% for 90% of the typical annual temperature change here isn't TOO bad! I'm guessing temperature affects on battery capacity are of a similar magnitude. Keep in mind that the wire also heats up from the

Re: [EVDL] Miles Remaining

2014-05-16 Thread Lee Hart via EV
Michael K Johnson via EV wrote: Found an ebay listing for WRB4812S which has 36-72V input and 12V output. Bought it. Then re-read and found that it's a 1W part and the meter is listed at 2W. Caution: A large majority of these small inexpensive DC/DC converters have really bad isolation. They

Re: [EVDL] Miles Remaining

2014-05-17 Thread Lee Hart via EV
Michael Ross via EV wrote: I wonder if you can run two in parallel? Usually, no. Whichever one happens to have the slightly higher output voltage will try to supply *all* the power, and the other one just loafs. The overloaded one may shut down, or overheat, or otherwise do something

Re: [EVDL] Solar roadways.

2014-05-24 Thread Lee Hart via EV
Lawrence Rhodes via EV wrote: This is a very good idea in my opinion. http://www.youtube.com/watch?v=Ep4L18zOEYI It's an interesting idea. But cost is going to be a *major* problem. I wonder why they just don't put the PV panels in the noise walls, barriers, and other vertical constructions

Re: [EVDL] EVLN: Severe Issues w/ fcv Claims h2 Refueling Infrastructure Grant$

2014-05-25 Thread Lee Hart via EV
brucedp5 via EV wrote: Here is the summary section from this very long and detailed analysis, for those that don't have time to wade through it all: There is no inherent emissions advantage in Fuel Cell Vehicle technology. EVs are inherently a more efficient and economical per mile usage

Re: [EVDL] Cable Compatibility Within Conduits

2014-05-27 Thread Lee Hart via EV
George Wagner via EV wrote: Is there a problem with using the same conduit to contain the main traction cables (2/0 cable), charging cable (#6 wire) and BMS wiring (#12 wire)? There will be noise coupling between the signals. But shouldn't be an issue if the signals are used at different

Re: [EVDL] FLA terminals

2014-05-27 Thread Lee Hart via EV
KenA via EV wrote: When I built my EV in 2005, the general consensus was that for FLA batteries, the preferred terminal was SAE post style. And it still is. :-) For high currents (500 amps etc.) it is much better than the 5/16 studs or flag terminals. 15 - 8v GC batteries; 4/0 cables.

Re: [EVDL] EV Digest, Vol 19, Issue 43

2014-05-29 Thread Lee Hart via EV
Jan Steinman via EV wrote: My concern is that with thermoplastic insulation and no fuse, melting insulation could be a major disaster. But mechanical compromise (like high-centering) could be just as disastrous. Ah, but you are supposed to have a FUSE in each battery box, so if the two wires

Re: [EVDL] Insuring EV conversions in Minnesota?

2014-05-29 Thread Lee Hart via EV
Morgan LaMoore via EV wrote: Which insurance companies have sold insurance for EV conversions in Minnesota? I know Lee Hart and some others have conversions in Minnesota. I'm still with State Farm, and they still insure my 1980 Renault LeCar conversion. They have inspected it, and know it is

Re: [EVDL] EV Digest, Vol 19, Issue 44

2014-05-29 Thread Lee Hart via EV
Jan Steinman via EV wrote: I think you've convinced me to install a fuse! New high-current fuses are expensive. But I have a decent collection of surplus fuses. Here are some examples. Note that AC rated fuses should only be used up to 1/4 of that voltage on DC. Write me off-list if you'd

Re: [EVDL] EV Digest, Vol 19, Issue 44

2014-05-31 Thread Lee Hart via EV
jerry freedomev via EV wrote: I've used for many EVs just a 2 length of solid copper wire sized right for the load [as a fuse]. Higher voltage, use longer. Using SS bolt/nuts as terminals and support with distance and something to catch the molten metal if it blows. That works! :-) A fuse is

Re: [EVDL] Thermistor to use with 7cell Nimh pack.

2014-06-01 Thread Lee Hart via EV
Dennis Miles via EV wrote: I use temperature dependent protective devices using metal loaded wax which opens the circuit when the unit gets hot These are one-time thermal fuses. They do indeed get used in battery packs etc. But they are generally not replaceable -- once they blow, you are

Re: [EVDL] FLA battery terminals lugs

2014-06-02 Thread Lee Hart via EV
KenA via EV wrote: The maximum amperage of my system is 500 and it typically doesn't exceed 300. Would studs and lugs usually work for that? The studs are meant for golf carts, that only draw around 75 amps average, and peaks of maybe 200 amps for a few seconds. I have tried using the studs

Re: [EVDL] FLA battery terminals lugs

2014-06-03 Thread Lee Hart via EV
KenA via EV wrote: ...I think my use pattern may be the real culprit here. My commute is now 15 miles of mostly highway travel - typically at 55mph. It's not uncommon for me to be pulling 200+ amps for extended periods of time. From what I'm hearing, FLA in any configuration may not be a good

Re: [EVDL] EVLN: E-school-buses $ave school districts million$ power the grid

2014-06-03 Thread Lee Hart via EV
brucedp5 via EV wrote: http://www.udel.edu/udaily/2014/may/electric-school-bus-052814.html Electric school buses that power grid could save school districts millions An interesting idea. But it all hinges on the utilities actually being willing to PAY a fair price for the power they take. So

Re: [EVDL] FLA battery terminals lugs

2014-06-03 Thread Lee Hart via EV
Jay Summet via EV wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I have an S-10 electric conversion with 20 6 Volt golf cart batteries. They have studs. I am on my 2nd set of batteries and haven't melted any lead or had any studs pull out. Excellent! That says it can work, if everything

Re: [EVDL] Suitcase EV.

2014-06-03 Thread Lee Hart via EV
Thos True via EV wrote: Roderick Wilde drew up a basic design for a similar concept in the late '90s after traveling through airports... I remember those discussions. I suggested a motorized suitcase, and even got a fiberglass transit case to experiment with. The idea was to have a piece of

Re: [EVDL] Suitcase EV. vs TravelScoot

2014-06-03 Thread Lee Hart via EV
brucedp5 via EV wrote: Because a 'normal' mobility scooter was such a hassle to make happen and tow around using my sedan... I found... https://www.google.com/search?q=mobility+foldablesource=lnmstbm=ischsa=Xei=ffuNU9LaFtbooAT86ILIDwved=0CAcQ_AUoAgbiw=675bih=638 But, all that research is now for

Re: [EVDL] EVLN: Is An Electric Car A Better Value?

2014-06-04 Thread Lee Hart via EV
This one set off my BS detector: brucedp5 via EV wrote: For a truer look at what it costs to own an gas-powered vehicle versus a volt guzzler, we'll use The True Cost To Own feature at car education source Edmunds.com. Car: 2014 Nissan Leaf | 2014 Nissan Versa Note True Cost to Own: $35,363 |

Re: [EVDL] EVLN: Is An Electric Car A Better Value?

2014-06-04 Thread Lee Hart via EV
Willie2 via EV wrote: I bought my Leaf with no great battery concern... After two years, I was extremely disappointed to find that the Leaf battery would no longer carry me where I needed to go. Though my range decreased over 30%, Nissan refused to fix it, saying the battery is fine... If they

[EVDL] Batteries as thermoelectric generators

2014-06-04 Thread Lee Hart via EV
Here's an interesting idea (sorry for the long URL): http://powerelectronics.com/blog/thermogalvanic-process-converts-low-temp-waste-heat-electricity?NL=PET-01Issue=PET-01_20140604_PET-01_786YM_RID=leeah...@earthlink.netYM_MID=1469693sfvc4enews=42cl=article_1_b Since the voltage of rechargeable

Re: [EVDL] V2G at L1 is practical

2014-06-06 Thread Lee Hart via EV
Peri Hartman via EV wrote: You wouldn't even need a central instruction. It could be the same V2G electronics, but only one way. That is, when there's a dip in voltage charging decreases. The bigger the dip, the more the charge shuts down. I suppose it could also react to spikes and absorb

Re: [EVDL] EVLN: Greenfield, MA's dicey drunk freakazoids unplugging EVs

2014-06-08 Thread Lee Hart via EV
Dennis Miles via EV wrote: My FIRST piece of advice is charging stations need to be supervised. Vandalism is a crime. Go to the Police and swear out a complaint . Luckily, it's getting easier to install security cameras. They can gather evidence. Unfortunately, it still rarely leads to an

Re: [EVDL] Exploding cell

2014-06-18 Thread Lee Hart via EV
Robert Bruninga via EV wrote: Kaboom goes the cell! What kind of charger was being used? Why didn't it notice that the cell voltage was high, and shut down early? Some commercial chargers are amazingly stupid. I have a cordless drill with nimh batteries. Its charger blindly charges for 2

Re: [EVDL] Gas tax is not working...(tolls and Park-N-ride)

2014-06-25 Thread Lee Hart via EV
switching to EV's for commuting does nothing to solve congestion... Rick Woodbury's Tango EV does. See www.commutercars.com The Tango is a 4-wheel car that's only 3 feet wide and 8 feet long. It's the same size as a motorcycle. Four of them can park in the same parking place that holds just

Re: [EVDL] gas tax (EV transmission lines, not oil pipelines)

2014-06-25 Thread Lee Hart via EV
Robert Bruninga via EV wrote: I can see that my original statement was confusing. What I meant was that for the same conductor and same I^2R loss, DC can deliver nearly 40% more power because the DC line can operate at the PEAK voltage rating of the line, whereas the AC line only delivers that

Re: [EVDL] 3d printed auto parts

2014-06-28 Thread Lee Hart via EV
brucedp5 via EV wrote: EVLN: Local Motors Will Build Deliver The 1st 3D-Printed EV @IMTS 2014 Funny, Urbee claims the same thing. I'm sure there are others. Do *any* of the companies that claim world's first... bother to check history before making their claims?

Re: [EVDL] EV potential - Postal Service and 7 MPG average

2014-06-29 Thread Lee Hart via EV
EVDL Administrator via EV wrote: It appears to me that EVs have not yet been a success in postal delivery. I can't understand why not. Anyone with other (I hope more positive) information please post it. I have some information on this regarding the US Postal Service's efforts. The Post

Re: [EVDL] EV potential - Postal Service and 7 MPG average

2014-06-30 Thread Lee Hart via EV
Rick Beebe via EV wrote: On 06/29/2014 03:57 PM, EVDL Administrator via EV wrote: It appears to me that EVs have not yet been a success in postal delivery. I can't understand why not. Anyone with other (I hope more positive) information please post it. David Roden - Akron, Ohio, USA EVDL

Re: [EVDL] Fw: 3d printing auto body

2014-06-30 Thread Lee Hart via EV
jerry freedomev via EV wrote: lithiums... BMS... composites...finally makes long range EVs viable at a reasonable cost. The FreedomEV has the weight, space, and capacity for 450-500 mile range if I wanted to... But probably stick with under 150 miles to save weight, cost... I agree. Just

Re: [EVDL] Trailer type Range extenders

2014-07-10 Thread Lee Hart via EV
EVDL Administrator via EV wrote: I don't see the benefit in driving an EV M-F and add an ICE range extender to it on the weekend, if the range extender's emissions are 10x that of the ICEV I'm replacing - or more. IMO it's better to own an EV, and rent a small ICEV for those longer trips; or

[EVDL] Controller page updates

2014-07-15 Thread Lee Hart via EV
Hi gang, I've been adding content to the Sunrise EV website in an effort to make it more useful. I just added documentation on the Henney Kilowatt rectactor controller (the earliest solid-state controller that I know of). I'm no web designer, so I stick with simple HTML4 for everything to

Re: [EVDL] motor controller

2014-07-17 Thread Lee Hart via EV
Electric Blue auto convertions via EV wrote: Lee, that looks like a Clark/Hyster contactor board fork lifts used in the 60s and 70s. I have a Clark E500 fork lift service manual, It looks the same, The Clark/hyster has field weaking, The Henneys were built in 1959. Only about 100 were made,

Re: [EVDL] Controller page updates

2014-07-17 Thread Lee Hart via EV
Many thanks to everyone for checking out the page! I'm delighted to see that HTML4 still seems to work. I was worried that the web had evolved past it (the way my ASCII artwork can no longer be displayed on many people's computers). :-( Lawrence Harris wrote: Getting requirements to meet WCAG

Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive EVSE for i3 EV

2014-07-20 Thread Lee Hart via EV
From: Martin WINLOW Not wanting to shoot your work down but I am reminded of (I think it was) Lee's idea of using an auto engaging charger connection which would be much more efficient, much cheaper and only marginally less practical. It was actually Bob Rice's solution (although the idea

Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive EVSE for i3 EV

2014-07-21 Thread Lee Hart via EV
From: Peri Hartman via EV ev@lists.evdl.org Me, too. However, consumers might not care (unfortunately). In other words, you might pay 15% more to cover losses but compared to what? Consumers will be happy to just park and have the charge happen automatically. Unless energy costs are really

Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive EVSE for i3 EV

2014-07-21 Thread Lee Hart via EV
From: Martin WINLOW It's not just convenience. There is the issue of theft/vandalism of/to charging cords and the (small) danger to passers by posed by them i.e. the trip hazard. They'll also wear out in time. The inductive system removes all these problems. Maybe. Everything hinges on how

Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive EVSE for i3 EV

2014-07-21 Thread Lee Hart via EV
From: Dennis Miles at what cost? Are we going to replace a $50 wire with a $2,000 wireless? Yes. :-/ As long as someone else pays for that $2000 wireless setup and the extra electricity it uses, consumers will fall for it. Of course, it is usually the consumer that pays, whether he realizes it

Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive EVSE for i3 EV

2014-07-21 Thread Lee Hart via EV
From: Peri Hartman Is it possible to use multiple coils to focus the beam? Magnetic fields are devilishly difficult to direct or focus. With electricity, we have great conductors (copper, silver, etc.) and great insulators (air, plastics, etc.) There are *many* orders of magnitude difference

Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive EVSE for i3 EV

2014-07-23 Thread Lee Hart via EV
From: George Tyler I have done a lot of transformer and inductor design over the years, always said you can't focus or direct a magnetic field, apart from ordinary magnetic materials of course. On day I found something that someone had put together on the web: He pointed out that if you have a

Re: [EVDL] Tesla might Supercharge EVs to regain 400mi in 15min for 7 credits

2014-07-27 Thread Lee Hart via EV
Ben Goren via EV wrote: brucedp5 wrote: In Tesla’s defense, Straubel says that the current 120-kW Supercharger “seemed pretty crazy even 10 years ago” when conventional chargers delivered under 10kW. So, maybe this theoretical 720 kW Supercharger is possible…in time. But what’s the work-around

Re: [EVDL] Why EVs are awesome

2014-07-28 Thread Lee Hart via EV
Roland via EV wrote: One day I was in the checkout lane at Wal Mart and had the whole shopping cart fill with 1 gallon jugs of distill water that was on sale. A guy said, what do you use all that water for? I said, I run my car on this water. Add it to a secret solution of H2S04 and Ionize

Re: [EVDL] Tesla might Supercharge EVs to regain 400mi in 15min for7 credits

2014-07-29 Thread Lee Hart via EV
Dennis Miles via EV wrote: Because, Marion, the fool cell gives the least pollution at the vehicle. (And the manufacturers want the carbon credits, and Is, I have been told, the refining or conversion, of methane to hydrogen, is done in an unregulated location, not in the motor vehicle.)

Re: [EVDL] Lawn tractor conversion: lessons learned

2014-07-29 Thread Lee Hart via EV
Michael K Johnson via EV wrote: I got lots of useful help here on my lawn tractor conversion project — Glad we could be of help. Congratulations on getting the EV grin while mowing the lawn! :-) silly idea that I could fit everything under the existing hood and it would look the same, just

Re: [EVDL] Lithium battery setpoints...

2014-07-30 Thread Lee Hart via EV
Sean Korb via EV wrote: Is this (softball question here) because the aluminum terminals start to oxidize in the atmosphere and the sandpaper takes that light (but very tough and durable) corrosion off? This corrosion would add significant resistance to the battery terminals. Right in one! :-)

Re: [EVDL] Lithium battery setpoints...

2014-07-31 Thread Lee Hart via EV
Michael Ross wrote: In air, aluminum oxide forms nearly instantly. Therefore, sanding is a useless activity, if the goal is to remove aluminum oxide... You're right; aluminum oxide forms very quickly. However, the longer it is exposed to air, the thicker the insulating layer gets. So cleaning

Re: [EVDL] To Noalox, or Not to Noalox

2014-07-31 Thread Lee Hart via EV
Michael Ross via EV wrote: I can't for the life of me figure out why a highly resistive dielectric grease (mentioned by others) is a better choice than a conductive grease... The grease is only filling the gaps (asperities) between the two metals. There is no grease at the contact points --

Re: [EVDL] Hybrid Mustang: AC or DC?

2014-07-31 Thread Lee Hart via EV
Ben Goren via EV wrote: Thanks, Jerry. A 200+ mile BEV Ghia certainly sounds like a fantastic car... The Ghia happened to have several attractive attributes for an EV. It was very light, it was reasonable aerodynamics, and enough room for batteries. John Bryan's Ghia was one example. He

Re: [EVDL] Hybrid Mustang: car bought

2014-08-01 Thread Lee Hart via EV
jerry freedomev via EV wrote: [Is the Mustang with the low VIN number a V8?] it's far better just to keep it original to retain it's future value. When the economy gets better it'll be very desirable. This is a dilemma I run into all the time. Older simpler cars make better EVs and are easier

Re: [EVDL] Hybrid Mustang: AC or DC?

2014-08-02 Thread Lee Hart via EV
Willie2 via EV wrote: Here is a cautionary tale of conversions and air conditioning... Ouch! It sounds like the guys doing your conversion are learning on the job. :-( Let's see: Are these the takeaways from your experiences? - Be sure there is sufficient belt wrap (looks like 120 degrees

Re: [EVDL] Hybrid Mustang: AC or DC?

2014-08-02 Thread Lee Hart via EV
Ben Goren via EV wrote: I've thought about adding insulation for both thermal efficiency and road noise reduction Insulation helps in both of these respects. Cars are *woefully* badly insulated. Insulation has a major effect on how much energy you'll need to heat or cool it. You can run

Re: [EVDL] Hybrid Mustang: motorcycle drivetrain?

2014-08-05 Thread Lee Hart via EV
Dennis Miles via EV wrote: David, and others, the most fragile part, of a series DC motor, is the commutator. And that is, because the copper segments are glued to an insulating core. When the current is flowing, the segments heat up and soften the glue, then they are subjecting to lifting, away

Re: [EVDL] Hybrid Mustang: motorcycle drivetrain?

2014-08-06 Thread Lee Hart via EV
EVDL Administrator via EV wrote: Ben, autos stopped using chain or belt drives 80 years ago ... Well, lots of cars still have timing chains. They last longer than belts. :-) -- We cannot waste time. We can only waste ourselves. -- George Matthew Adams -- Lee Hart's EV projects are

Re: [EVDL] EVLN: i3 EV self-parks driver climbs out of window to prove (video)

2014-08-06 Thread Lee Hart via EV
expecting the car to plug itself into a wall outlet / cable is asking a bit much. I can easily imagine a robot arm that can reach out, find and connect to some contacts mounted somehow on the front license plate area. That's a lot of moving parts to break, especially considering how many

Re: [EVDL] CALB bolt terminals getting hot -

2014-08-16 Thread Lee Hart via EV
Danpatgal via EV wrote: I have on my to-do list to clean up the connections. With the BMS modules on there it's just a pain and I have to be very careful (I know - if I had done it at the beginning ...). You can measure the resistance of the connections without taking them apart. Then only

Re: [EVDL] CALB bolt terminals getting hot -

2014-08-20 Thread Lee Hart via EV
Jay Summet via EV wrote: The eSamba guy is using a piece of fuse wire to each cell, so that if a single cell shorts out, the fuse wire blows... That's a good plan. Do you know how he tested it, to be sure the fuse wire is sized right to actually work? -- The principal defect in a storage

Re: [EVDL] CALB bolt terminals getting hot -

2014-08-20 Thread Lee Hart via EV
Jay Summet via EV wrote: Why not pressure fit? ...Flashlights do it all the time... Think about how many times you've had bad connections and flickering light, had to shake it or clean the contacts to get it to work. You can make a good electrical connection with pressure alone, but it

Re: [EVDL] Conversion advice (regen)

2014-08-22 Thread Lee Hart via EV
Jan Steinman via EV wrote: I have a friend who owns a motor service/rewinding shop. He says it would be cost-prohibative to do so, if you had to pay someone to do it. I'm sure that would be the case. If shop time is $100/hour and it took 4 hours, the rewind would cost $400. Nobody will pay

Re: [EVDL] Conversion advice (regen)

2014-08-22 Thread Lee Hart via EV
From: Lee Hart via EV ev@lists.evdl.org When you increase the voltage, you reduce the current proportionately. I.e. a 12v 100amp alternator becomes a 120v 10amp alternator. Rather than use the special oddball automotive diode packages, just bring out the 3 phase wires, and use an external bridge

Re: [EVDL] Cargo bike with electric chain.

2014-08-28 Thread Lee Hart via EV
From: Chris Tromley ​Not liking the efficiency hit, but still an interesting idea​. Like any hybrid, you lose efficiency at the peak; but regain it during other modes of operation. If you spend enough time in these other modes, then your overall efficiency improves. I'm no expert, but I

Re: [EVDL] EVLN: As EV battery prices fall ?More range or lower100mi EV cost?

2014-08-30 Thread Lee Hart via EV
From: Cor van de Water Like so many other EV'ers, we have found the semi-ideal solution in having an EV (rather short range, but I can manage over 95% of my trips fine) in addition to the Prius which is my wife's favorite car. Everybody happy. Same here. EV for short trips, Prius for long ones.

Re: [EVDL] EVLN: As EV battery prices fall ?More range or lower 100mi EV cost?

2014-08-30 Thread Lee Hart via EV
Ben Goren via EV wrote: Obviously, a car that's superior (and actually used) for 85% of driving should be considered the primary car -- even if such a car generally isn't an option as the only car for a single-car family. That's generally how I've been using my EVs for 30+ years. It's my

Re: [EVDL] EVLN: Menacing Copper-Theives A 'Cut Steal' EVSE Scourge

2014-08-31 Thread Lee Hart via EV
From: Peter C. Thompson In any case, as long as surplus copper can bring in some cash, there will always be cable theft. Then make the wire out of something else. Aluminum, or even steel. I had problems with the neighbor cutting the perimeter wire for my Robomower (which is an EV, so it's

Re: [EVDL] EVLN: Menacing Copper-Theives A 'Cut Steal'EVSEScourge

2014-09-06 Thread Lee Hart via EV
tomw via EV wrote: EVSE availability varies greatly with area of the country. That's for sure. Where we live, there's an EVSE at the Nissan dealer in St. Cloud MN (about 10 miles away). Beyond that, the next one is in Brooklyn Park MN, (65 miles away). When we test drove a Nissan Leaf, 2/3

Re: [EVDL] Stud type fuse block needed

2014-09-08 Thread Lee Hart via EV
Does this fuse have a flat blade at each end with a hole in it for a bolt? I usually mount this kind of fuse on these: http://www.waytekwire.com/products/1439/Junction-Blocks/ They are basically a plastic block with a stud embedded in it. The block can be attached to a chassis, and the stud

Re: [EVDL] Stud type fuse block needed

2014-09-08 Thread Lee Hart via EV
Jan Steinman via EV wrote: Yea, I forgot the part where I put the whole thing inside a section of fiberglass cross-country ski pole. That should contain the shrapnel, and I shrink-wrap the fiberglass to the main conductor, which hopefully keeps it from contacting ground. Have you tried

Re: [EVDL] 4 to 12 Cell Lithium BMS

2014-09-16 Thread Lee Hart via EV
Steve Clunn via EV wrote: I am working on some Golf Carts and portable 12V power packs that get used sporadically and may sit for months without use. I have contactor on one 12V and 36V that draws about 1 amp. The problem is, if everything is happy, the Mini BMS Circuit keeps the contactor ON.

Re: [EVDL] 4 to 12 Cell Lithium BMS

2014-09-17 Thread Lee Hart via EV
Cor van de Water via EV wrote: Since this is used for charging - you might be able to cut the wire from the contactor that feeds it from the aux battery and instead, connect the power to the contactor coil from a small 12V supply powered by the charging AC, so it only powers up when actually

Re: [EVDL] 4 to 12 Cell Lithium BMS

2014-09-17 Thread Lee Hart via EV
Steve Clunn via EV wrote: One of my problems with the setup that I have is that the Contactor is for both driving and Battery Charging, so, the Contactor ends up being ON almost all of the time. One solution of course, would be to have the charging circuit separate from the Load Circuit and I

Re: [EVDL] Reduced range with Heater on.

2014-09-17 Thread Lee Hart via EV
Robert Bruninga via EV wrote: “What? The heater in your gas guzzler is reducing your gasoline range by over 70%. And not only that, you can’t even turn all that wasted heat off! All you can select to do is either vent the heat into the cabin in the winter, or blow it under the car all the rest

Re: [EVDL] Dissimilar metals on Headyways?

2014-09-19 Thread Lee Hart via EV
via EV wrote: So my basic question is if the cell is already Al to Steel internally, might it be better to go Al to Steel to Al (that last Al being my intercell connectors) than to do Al to Steel to Cu (which would be copper intercell connectors)? What little I know about metallurgy tells me

Re: [EVDL] Tragedy of the commons (was Electrifying large vehicles...)

2014-09-19 Thread Lee Hart via EV
The tragedy of the commons: http://en.wikipedia.org/wiki/Tragedy_of_the_commons How many ecologically minded small car drivers does there have to be to make up for the excesses of the large ones? There is a field of study called Fuzzy Logic (silly name; serious topic). Normal boolean logic

Re: [EVDL] Dissimilar metals on Headyways?

2014-09-21 Thread Lee Hart via EV
via EV wrote: I might well be fighting a losing battle, but for the price of 4 holes in a strip of material it has been a great education. Tonight I tested the different alloys of Al idea. Last time, 0.02 x 1.75 in strip of roof flashing aluminum: ~120 F temperature rise in ~15 seconds, cross

Re: [EVDL] Power of EV (DC)

2014-09-22 Thread Lee Hart via EV
John Lussmyer via EV wrote: So, now that my Electric F-250 is fully functional with it's Leaf batteries, I've been driving it more. One of the odd things I have to deal with is that my other vehicle is a nearly identical truck that is Diesel. So, on the freeway with the Diesel (which I've been

Re: [EVDL] Dissimilar metals on Headyways?

2014-09-23 Thread Lee Hart via EV
George Tyler via EV wrote: Why not just buy the link plates that headway sell, made for the purpose. Get the cell mounts at the same time? Are these just a flat bar that bolts directly between cells. If so, that's not a good way to do it. The cells will move slightly due to road bumps and

Re: [EVDL] Lithium batteries direct from China

2014-09-23 Thread Lee Hart via EV
Marcus Reddish via EV wrote: Are these the old white Thunder sky cells that failed? Seem to remember a picture of them leaking. Is it possible folks charged those early cells like they were lead and caused (or contributed to) the failures? I have not heard of any bad batch since the white cells,

Re: [EVDL] co-operation

2014-09-26 Thread Lee Hart via EV
Robert Bruninga via EV wrote: It was a rude awakening to me when I realized that all the Greatness of an EV to solve all our problems does not apply to congestion... How about if the EV is Rick Woodbury's Tango (see www.commutercars.com)? This is a car the size of a motorcycle; 1/4th the size

Re: [EVDL] Building a true road going solar EV.

2014-09-27 Thread Lee Hart via EV
The other potential problem is *not* having a differential. With a mechanical differential, one wheel is allowed to turn faster than the other. When going around corners. With hub motors, that process will have to be done electronically. With one controller and two DC motors, each driving

Re: [EVDL] Building a true road going solar EV.

2014-09-27 Thread Lee Hart via EV
Ben Goren via EV wrote: http://www.resilience.org/stories/2012-10-25/electric-velomobiles-as-fast-and-comfortable-as-automobiles-but-80-times-more-efficient Thanks, Ben! This is an excellent article on the strengths, weaknesses, and challenges in very light human-electric hybrid vehicles.

Re: [EVDL] Lithium batteries direct from China

2014-09-30 Thread Lee Hart via EV
Byron James via EV wrote: Yikes - the GBS specs call out max continuous discharge 3C. I would be careful pulling 5C. A Local GBS distributor destroyed, within a month, GBS cells charging and discharging GBS cells at 3C... I tested 16 GMS-LFMP100AH cells. I found two bad ones as delivered

Re: [EVDL] Lithium batteries direct from China

2014-09-30 Thread Lee Hart via EV
Lee Hart via EV wrote: I tested 16 GMS-LFMP100AH cells... Correction; should be GBS-LFMP100AH cells. -- Results! Why man, I have gotten a lot of results. I know several thousand things that won't work. -- Thomas A. Edison -- Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.htm

Re: [EVDL] Chinese inverters legality?

2014-10-01 Thread Lee Hart via EV
Bill Dube via EV wrote: I can think of no modern commercial appliances that require that neutral be at ground potential. Pretty much all gas furnaces, water heaters, electric stoves, and other appliances that prove flame before they will open the main gas valve. The gas pipe is always

Re: [EVDL] EValert: !Don't buy a salvaged Tesla EV to repair drive! (video)

2014-10-02 Thread Lee Hart via EV
Collin Kidder via EV wrote: If you purchase something (and you do get a title when you buy a car) then it is yours. What you do with it is no longer the company's problem. I agree with Collin. He bought it; it's his to do with as he likes. Tesla can choose to help (by supplying parts,

Re: [EVDL] EValert: !Don't buy a salvaged Tesla EV to repair drive! (video)

2014-10-02 Thread Lee Hart via EV
Robert Bruninga via EV wrote: This is laughable. Sure the car is yours to do anything you want with. But when you want to go ask Tesla to activate it, then guess what, you are ASKING for help from someone who has a very valid reason not to want to take the risk to HELP you with YOUR salvage

Re: [EVDL] EValert: !Don't buy a salvaged Tesla EV to repair drive! (video)

2014-10-02 Thread Lee Hart via EV
Russ Sciville via EV wrote: I can understand why Tesla are a bit twitchy about people re-building accident damaged cars as the main cell pack under the floor could be damaged. No, it's not surprising. But *all* car companies have had the same worries since time immemorial. For that matter,

Re: [EVDL] EValert: !Don't buy a salvaged Tesla EV to repair drive! (video)

2014-10-05 Thread Lee Hart via EV
via EV wrote: I gave myself an idea. Fill the battery boxes with a fluid. If the fluid is leaking after a wreck, the battery boxes have been compromised, so the car shouldn't be driven. That's not a bad idea. Batteries also need heating and cooling. Fluids are a good way to add or remove

Re: [EVDL] EValert: !Don't buy a salvaged Tesla EV to repair drive! (video)

2014-10-05 Thread Lee Hart via EV
Klaus via EV wrote: It's been going for a long, long time. To mention just a few: [snip]... It's just a game of cat and mouse. A great summary, Klaus. And the cat has all the teeth and claws (money, lawyers and lobbyists). You'll notice that car companies have gotten a lot smarter in

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