Re: [EVDL] EV Digest, Vol 76, Issue 31

2019-02-28 Thread Roger Stockton via EV
Lawrence Rhodes wrote: >> I'm wondering how much capacity the capacitors are adding to the system, >> as the voltage of the capacitors can never go below the sag voltage of >> the LiIon cells under load, and can never go above the LiIon cells >> voltage during regen. > > > I am not sure this

Re: [EVDL] Maxwell Supercap 16v modules could protect my expensive lithium batteries.

2019-02-27 Thread Roger Stockton via EV
Jay Summet wrote: > I'm wondering how much capacity the capacitors are adding to the system, > as the voltage of the capacitors can never go below the sag voltage of > the LiIon cells under load, and can never go above the LiIon cells > voltage during regen. > > I'd love to see a comparison

Re: [EVDL] EVSE.uk to ban pih> cheap onboard-3kWh-rechargers too-slow

2018-12-12 Thread Roger Stockton via EV
Willie via EV wrote: > > https://www.autoexpress.co.uk/car-news/105449/ban-plug-in-hybrids-from > > -ev-charging-bays-say-experts Ban plug-in hybrids from EV charging > > bays, say experts 10 Dec, 2018 Tristan Shale-Hester > > I was hoping some one would comment on this. Can someone make sense

Re: [EVDL] poor 2011 Leaf performance

2018-12-06 Thread Roger Stockton via EV
Steve Heath wrote: > The best mile/Kw I have got has been 180 and the worst is 230. Average > is 190 and this measurement is based on coulomb counting over the > distance. I think you are meaning to state 180-230 Wh/mi? 180-230 mile/kWh would be extremely unusual efficiency for an on-road EV,

Re: [EVDL] AM radios dropped from plugins (RFI, EMI, +)> (go digital)

2018-11-09 Thread Roger Stockton via EV
Peri Hartman wrote: > Hmm, maybe cost savings of putting a grounded shield around the motor > and controller. For the AM radio, what could the cost be? $1.00? Good point; perhaps the real cost savings isn't the radio itself, but that its absence allows them to cut corners (and cost) elsewhere

Re: [EVDL] AM radios dropped from plugins (RFI, EMI, +)> (go digital)

2018-11-09 Thread Roger Stockton via EV
Tom Keenan wrote: > I have a 2013 Leaf, and the AM radio works fine. Same with my old 2005 > Prius. I use the AM radio on a daily basis during my commute to work. > Not sure if it is perhaps an issue with certain radio suppliers/car > manufacturers? I suspect it has more to do with the cost

Re: [EVDL] Has Tesla gone too far?

2018-09-22 Thread Roger Stockton via EV
paul dove wrote: > > > Sent from my iPhone > > > On Sep 22, 2018, at 11:28 AM, Haudy Kazemi via EV > wrote: > > > > Which models have SAE ports? The only adapter I know of is Chademo.

Re: [EVDL] Mom yanks kids from e-toy-suv w/ smoking pack before it flames

2018-08-17 Thread Roger Stockton via EV
> -Original Message- > From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Lee Hart via EV > Sent: August-16-18 9:51 PM > To: Electric Vehicle Discussion List > Cc: Lee Hart > Subject: Re: [EVDL] Mom yanks kids from e-toy-suv w/ smoking pack before > it flames > > brucedp5 via

Re: [EVDL] Charging load on the grid (NOT)

2018-07-30 Thread Roger Stockton via EV
Cor van de Water wrote: > Another data point to consider: > The *cheapest* (base tariff) rate of household electricity here in Silicon > Valley has now been raised above $0.21 per kWh. > If you go over your baseline (about 11 kWh/day) then price increases over > 30c/kWh which almost everyone

Re: [EVDL] Charging load on the grid (NOT)

2018-07-30 Thread Roger Stockton via EV
Cor van de Water wrote: > LED prices are much more competitive than you put in your calculation. > Almost every LED that I see can be had for $5 or less. > Best selling on Amazon is a good quality, non-dimming LED for $1.39 when > you buy a 16 pack ($22.22 for the pack) It was not my goal to try

Re: [EVDL] Charging load on the grid (NOT)

2018-07-30 Thread Roger Stockton via EV
David Roden wrote: > Incandescents that are used daily burn out fast, and get replaced with > modern CF or LED retrofits. My experience is that if you are in the habit of turning a light on when you enter a room and off when you leave, that CFLs will die *faster* than incandescents. If you

Re: [EVDL] Reposting, Still Need Help, 86 Year Old Uncle Still TryingAfter 34 Years to Get Bucket List GE EV1-B Based EV Car Running

2018-07-26 Thread Roger Stockton via EV
Matt Awesome wrote: > Wait, I had this backwards. I thought we *were* discussing the EV-1 > vehicle, not the forklift controller. Nope; it is confusing at first glance, but the EV-1 *car* was a Chevy, while the EV-1 *controller* is a GE product ;^> > If we're talking about the forklift

Re: [EVDL] Reposting, Still Need Help, 86 Year Old Uncle Still TryingAfter 34 Years to Get Bucket List GE EV1-B Based EV Car Running

2018-07-25 Thread Roger Stockton via EV
Cor van de Water wrote: > Not that I remember that this was a requirement for the GE EV1 > controller. > That would also not have worked for my controller, [...] Cor, while your GE controller might well have had similar (or identical) switch input requirements as the GE EV-1 SCR controller in

Re: [EVDL] K BC20 96 volt charger replacement?

2017-09-28 Thread Roger Stockton via EV
brucedp5 wrote: > 12VDC deep-cycle batteries do not last as long as 6V golf/traction > batteries. The latter have thicker plates= more lead. The latter part of this statement is no longer necessarily true; as the golf industry moved to 12V floodeds for their 48V cars, 12V flooded batteries

Re: [EVDL] Slow due to 96V pack?

2017-09-14 Thread Roger Stockton via EV
paul dove wrote: > There is no voltage adjustment on input voltage in any motor controller I > ever used. This discussion specifically concerns a vehicle using a Zilla motor controller; from the Z1K specsheet: "Other features include programmable motor voltage and current limits, programmable

Re: [EVDL] Slow due to 96V pack?

2017-09-14 Thread Roger Stockton via EV
paul dove wrote: > That made no sense to me but a DC motor controller takes the input voltage > to power mosfets or igbts which switch the power on and off with a pwm > signal to get the desired output to drive a motor. It has no knowledge of > the battery impedance. The controller does not

Re: [EVDL] Slow due to 96V pack?

2017-09-13 Thread Roger Stockton via EV
paul dove wrote: > You said:Here's my guess: A 6v golf cart battery has an internal > resistance of about 5 milliohms (0.005 ohms). A 96v pack has 16 of them; > so the resistance is 0.005 x 16 = 0.08 ohms. Let's say the Zilla limits > voltage to 72v (i.e. it won't pull the pack below 72v). Then

Re: [EVDL] Electric vehicle subsidies: expensive and ineffective?

2017-08-03 Thread Roger Stockton via EV
Dan Baker wrote: > Would anyone care to comment on this? Agree or disagree? Is it oil > funded > FUD? I live in Nova Scotia, Canada, one of the have-not provinces for EV > rebates. I can affirm that without rebates EV car sales here are pretty > well nonexistent, most dealers here carry very

Re: [EVDL] ? Is this really a Smart Fortwo ED EV that burnt to a crisp ?

2017-07-12 Thread Roger Stockton via EV
EVDL Administrator wrote: > A lot of people have shown an interest in discussing the origins of the > fire here, but I haven't seen any posts yet addressing Bruce's question > -- was this really a Smart? > > Bruce provided links that show a Smart chassis. The burnt-out skeleton in > the photos

Re: [EVDL] ? Is this really a Smart Fortwo ED EV that burnt to acrisp ?

2017-07-11 Thread Roger Stockton via EV
Cor van de Water wrote: > Remember that an EVSE has a relay interrupting the 240V supply. > As I related before, any wire that is damaged or improperly tightened > can burn, even if not overloaded for the spec of the wire. > If the EVSE is not frequently used, there is the risk of corrosion of >

Re: [EVDL] Most efficient hub motor for 20" wheel

2017-05-30 Thread Roger Stockton via EV
Lee Hart wrote: > My Bike-E has a 7-speed rear hub, and of course a very long chain. My > thought was to mount the motor under the seat, with a freewheel > sprocket to the chain. > That way, it gets the benefit of the gearing. The freewheel means you're > not spinning the motor when it's not

Re: [EVDL] Adapting L1 to 14-50 receptacle

2017-02-28 Thread Roger Stockton via EV
Chris Tromley wrote: > So here's my question. A 14-50 has a neutral, so I'm pretty sure I can > adapt my brick to it by simply tapping one leg of the 240 V. Is there > anything subtle that I'm missing? Like if there are a bunch of these > outlets fed by a single panel and I pull 3 kW off one

Re: [EVDL] What is a compliance car? : ... Volt/Prius ...

2017-01-11 Thread Roger Stockton via EV
Robert Bruninga wrote: > Sorry for your bother... But there is a huge difference and the name > differentiation is good. Since the Chevy Volt has the longest EV range of > every one of the 15 plug-in hybrids now on the market it diserves a very > definite distinctive nomenclature. The

Re: [EVDL] What is a compliance car? : ... Bolt named top car ...

2017-01-11 Thread Roger Stockton via EV
brucedp5 wrote: > So, the less informed as Roger (people in the public, EVnoobs), would hear > the phrase 'compliance car' without initially & truly understanding what > it means, & just surmise (pick-up) that it is a not a positive thing. I > would hope that those EVnoobs would later do the

Re: [EVDL] What is a compliance car? : ... Bolt named top car ...

2017-01-11 Thread Roger Stockton via EV
paul dove wrote: > Quebec becomes the first Canadian province and 11th North American market, > after 10 US states, to adopt a ZEV mandate. Just as California does not constitute the entire American market, Quebec is not the entire Canadian market. The Bolt is offered for sale in other

Re: [EVDL] What is a compliance car? : ... Bolt named top car ...

2017-01-11 Thread Roger Stockton via EV
brucedp5 wrote: > That post and its responses are really about what 'we each' think what a > 'compliance car' is. > > I had this thought over a week ago when a news item tried to say the Bolt > was not a compliance car based on how many EVs GM 'had to' produce vs how > many more GM said they

Re: [EVDL] Chevy Bolt named top car in N. America

2017-01-10 Thread Roger Stockton via EV
Dannyterhaar wrote: > > And despite the fact that GM specifically said this was a compliance car > > and had no intention of selling this in other states. > > > > Can you point me to a public posting of GM where they announced that ? > I really tried to find it , but it's not popping up in

Re: [EVDL] Cheap L2 charging in parking places: Bolt EV'sIn Production

2016-11-09 Thread Roger Stockton via EV
ROBERT via EV wrote: > Roger, let me try to clarify my concern.  A person buys a third party > J1772 to NEMA adapter (made in China and made cheap).  The adapter has a > NEMA rated 20A plug.  The adapter does not produce a modified pilot > signal. Just to be clear, the adapter does not

Re: [EVDL] Cheap L2 charging in parking places: Bolt EV'sIn Production

2016-11-08 Thread Roger Stockton via EV
ROBERT via EV wrote: > Again I must correct myself. I looked back at the J1772 standard and some > past work that I did. An EVSE outputs a 1KHz square wave. The duty cycle > of this wave informs the the vehicle of the maximum amperage that the EVSE > can supply (rated current). The vehicle is

Re: [EVDL] Cheap L2 charging in parking places: Bolt EV'sIn Production

2016-11-08 Thread Roger Stockton via EV
ROBERT via EV wrote: > How many of these adapters are approved by the vehicle manufacturer and > how many are UL listed? I would expect that every J1772 opportunity charge cord ("adapter") provided by a vehicle OEM will be UL listed and is clearly approved by that vehicle OEM for use with

Re: [EVDL] Cheap L2 charging in parking places: Bolt EV'sIn Production

2016-11-08 Thread Roger Stockton via EV
ROBERT via EV wrote: > (1) How does a vehicle with a J1772 connector know the rating of the NEMA > outlet? The portable J1772 EVSE charging cord/adapter tells the vehicle via the pilot signal how much AC current may be drawn. A 120V J1772 cord will almost certainly tell the vehicle not to

Re: [EVDL] Insurance Forensic Eng crying wolf ... (does this explain why Insurers' EV-uptake is slow?)

2016-10-31 Thread Roger Stockton via EV
Cor van de Water wrote: > Battery Disposal Cost: > "When a battery-powered electric vehicle is involved in a collision, > the battery needs to be removed, discharged, frozen and then destroyed. > Getting rid of a large, lithium-ion battery can cost upwards of > $30,000.00" > Say what? Frozen?

Re: [EVDL] 2nd life for lithium batteries

2016-10-14 Thread Roger Stockton via EV
Michael Ross wrote: > You are correct it is a form of accelerated life testing, but very > different from traditional testing for Li ion batteries. Almost > unrecognisable in comparison. Perhaps this is true of some more recent test regimen he has adopted; what he described in the presentation

Re: [EVDL] 2nd life for lithium batteries

2016-10-14 Thread Roger Stockton via EV
Michael Ross wrote: > Even though marketing likes accelerated life testing, and it > gives a higher comfort level to everyone, accelerated life > testing can just take resources away from ​more serious > investigation​; > This is where the work at Dalhousie got its motivation. [...] > Their

Re: [EVDL] Off-grid solar house and electric car charging

2016-06-08 Thread Roger Stockton via EV
Cor van de Water wrote: > Roger, > You used the wrong definition. The Wikipedia quote is about the power > delivered to the *load* but the discussion was about the power losses in > the *wire* feeding the load. No; just as the power dissipated in a resistive load remains the same, the power

Re: [EVDL] Off-grid solar house and electric car charging

2016-06-08 Thread Roger Stockton via EV
Robert Bruninga wrote: > Yes, as far as VOLTS and as AMPS as averages are concerned. Such as > average power. A 1500W resistor will be 1500W whether on DC or RMS AC. > > But the power loss in wires feeding that resistor will have greater loss > on AC because of two factors important in

Re: [EVDL] Charger connector options

2016-05-20 Thread Roger Stockton via EV
Christopher Darilek wrote: > How would you mount the car-side PowerPole connector?  Pigtail > somewhere?  I have a hole in the side of my car I'd like to use to mount > it.. Have a look at the PowerPole datasheet on Anderson's site:

Re: [EVDL] Charger connector options

2016-05-19 Thread Roger Stockton via EV
Christopher Darilek wrote: > I'm ready to upgrade my charger connector.  Right now I'm using NEMA plugs > on the ends of pig tails under the hood (I have to open my hood 2x a > day).  My charge rate is 18A @100V (reduced to not melt said plugs).  I > think I need 5 connections:  +100V, battery

Re: [EVDL] EVLN: What You Need To Know To Wire A Garage EVSE

2016-03-07 Thread Roger Stockton via EV
Peter C. Thompson wrote: > I didn't claim that it made any sense. :) I agree that having the > 14-50 plug in the garage makes a lot of sense (which is what I have - > for welding, of course). I think the use of NEMA 6-xx connectors makes sense given that the J1772 EVSE is a 240V *only*

Re: [EVDL] The reasons for a solar car.

2016-02-05 Thread Roger Stockton via EV
Peri Hartman wrote: > I don't think the desire for crash safety will go away. Just because > the odds decrease doesn't mean one doesn't want protection. I can go > on, but I think everyone knows what I mean. In a word: "Titanic". ;^> Cheers, Roger.

Re: [EVDL] The secrets of Avcon or smashing the hell out of a glued together claw.

2016-01-27 Thread Roger Stockton via EV
The Avcon connector is as specified in SAE J1772-2001. The standard inlet is capable of AC Level 1 and 2 charging and is required to support only 4 out of 9 possible contacts: Contact #1 (4.6mm dia): charger 1 (AC hot or Neutral in the case of Level 1 (120VAC)) Contact #2 (4.6mm dia): charger

Re: [EVDL] EVLN: This Is The GM-200mi EV Before You Are Supposed To See It (v)

2016-01-07 Thread Roger Stockton via EV
Michael Ross wrote: > It is a bit of a bugaboo that weight is important in terms of energy > consumption. More important is air drag losses, and rolling resistance. > In the thought experiment where there are no losses to friction, the > weight is meaningless except for whatever change in

Re: [EVDL] temp sensors on brushes

2015-09-08 Thread Roger Stockton via EV
Mark Grasser wrote: > I seem to remember one of the hottest points being the brushes themselves. > I am going to drill and tap about ¼" deep for 4-40 screw on the wire end > of the brush. Concerns would be these: are the brushes a god point to > read temperature? Am I in danger of splitting the

Re: [EVDL] 48V Energy Meter (Lead-Acid)...

2015-07-25 Thread Roger Stockton via EV
damon henry wrote: I have been around and using E-meters for many years now and this is the first time I have ever heard of using a zener diode as a method to create an isolated power supply for one. Is it really that simple? Yes, but it does not provide an ~isolated~ supply. [...] If I

Re: [EVDL] EVLN: Zombie222 electric 1968 Mustang 0-60mph:2s destroys Tesla-SP85D

2015-06-25 Thread Roger Stockton via EV
Ben Goren wrote: Erm...I don't think you understand how these things work. I very, very much doubt it's like Weyland sought out the Tesla to race; rather, almost certainly, both of them showed up to the same event, ran in a number of races against all sorts of vehicles, and the Zombie and the

Re: [EVDL] EVLN: Zombie222 electric 1968 Mustang 0-60mph:2s destroys Tesla-SP85D

2015-06-25 Thread Roger Stockton via EV
Ben Goren wrote: This whole exercise seems rather childish. If that's the case, then _all_ amateur racing for all time is and has been childish...and amateur sports, and all hobbies, and so on. Why would you waste time with paint and canvas when a camera is so much faster, easier, and

Re: [EVDL] Zero self-discharge

2015-06-23 Thread Roger Stockton via EV
Michael Ross wrote: It is like a bunch of people simply don't want to understand that things are not uniform across the field, that there is old tech that is being surpassed, and that some things are turning out very well. I would restate, I think it is possible that people don't recognise

Re: [EVDL] article: World's first 1 megawatt all-electric race car to compete at Pikes Peak

2015-04-03 Thread Roger Stockton via EV
Rush Dougherty wrote: Roger - Great photos of Woodburn, any more somewhere? Thanks. There are more from Woodburn '99 accessible from the index page: http://www.veva.bc.ca/woodburn/1999/index.htm And a few from 2000 at: http://www.veva.bc.ca/woodburn/2000/index.htm (I didn't get many photos

Re: [EVDL] article: World’s first 1 megawatt all-electric race car to compete at Pikes Peak

2015-04-02 Thread Roger Stockton via EV
Ben Goren wrote: Sorry -- I was referring to them seem to really be building a real race car, not attempting to verify their claims to bragging rights. The megawatt bit, honestly, didn't even register b On Apr 2, 2015, at 6:15 PM, Ben Apollonio via EV ev@lists.evdl.org wrote:

Re: [EVDL] Q about using an electronic load.

2014-11-07 Thread Roger Stockton via EV
Michael Ross wrote: I think I need to be a notch or two above garage testing.  To provide results worth referencing.  I do have to be frugal and not spend where good things can be fabricated.  We want to be cost effective for clients that aren't at the million$ a year in sales level. Thanks

Re: [EVDL] Q about using an electronic load.

2014-11-07 Thread Roger Stockton via EV
John Lussmyer wrote: If you are able to consider sufficiently large electronic loads, then ones that can push the energy back into the grid rather than dissipating it as heat become an option. This capability doesn?t really become available until you are looking at loads of at least 6kW, and

Re: [EVDL] Q about using an electronic load.

2014-11-06 Thread Roger Stockton via EV
Michael Ross wrote: If I have a programmable electronic load, rather than purely resistive loads, is this an unrealistic way to discharge batteries? I gather they use power MOSFETS and switch them to product the desired output current from the batteries. I think this implies some

Re: [EVDL] Q about using an electronic load.

2014-11-06 Thread Roger Stockton via EV
Michael Ross wrote: I have heard of putting a roll of fencing in a tank to steam off heat. Is this useful with a programmable load? Or is this just a crude way to discharge. Probably not, unless the electronic load you choose is designed to be used with an external load bank, or you plan

Re: [EVDL] Q about using an electronic load.

2014-11-06 Thread Roger Stockton via EV
Michael Ross wrote: I am investigating how to test cells and packs - I will need to charge and discharge. If I have a programmable electronic load, rather than purely resistive loads, is this an unrealistic way to discharge batteries? Thought I'd mention that while a programmable load is

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

2014-10-02 Thread Roger Stockton via EV
Mike Nickerson wrote: It is a good thing when a vehicle like a Tesla disables itself in an accident. Even my conversion does that. I have an inertial switch to disconnect the traction pack in the event of an accident. Now, in my case, I just need to reset that sensor. I'm sure Tesla has

Re: [EVDL] Flooded lead-acid ooopsie and how to correct best?

2014-08-11 Thread Roger Stockton via EV
Cor van de Water wrote: I presume that you meant to say unless it's very high in minerals and luckily our water is the softest in the area. I grabbed the water report from the city and saw that our tap water has on average only 71 PPM (Parts per Million) total dissolved solids, of which 53

Re: [EVDL] Flooded lead-acid ooopsie and how to correct best?

2014-08-11 Thread Roger Stockton via EV
Cor van de Water wrote: I have added a little dam of baking soda around the fill hole of that cell, so if it spills during the end of charging, it should get neuralized. As I expect you realise, my concern regarding loss of electrolyte due to spillage is that when this happens, you are

Re: [EVDL] Hybrid Mustang: motorcycle drivetrain?

2014-08-06 Thread Roger Stockton via EV
Dennis Miles wrote: {Ben, autos stopped using chain or belt drives 80 years ago, I like using the 4WD transfer case with the 2::1 low range for in town and 1::1 on highway coupled with the stock 3.0::1 in the rear axle differential. I realise it isn't quite what you meant, and I don't

Re: [EVDL] Hybrid Mustang: motorcycle drivetrain?

2014-08-06 Thread Roger Stockton via EV
Ben Goren wrote: Very interesting! That exact design won't work, as I'm keeping the V8 -- but the basic geometry is very similar to what I have in mind. Understood; I was thinking that it might be easier to modify the combiner output shaft to be double-ended so that one side attaches to the

Re: [EVDL] Hybrid Mustang: motorcycle drivetrain?

2014-08-06 Thread Roger Stockton via EV
Ben Goren wrote: I suspect that it is not just the static load of the belt tension, but the tension added to one side of the belt/chain when the motor is delivering torque. That was my initial thought, too...until late yesterday evening when I was doing a bunch of research on it. And,

Re: [EVDL] Hybrid Mustang: motorcycle drivetrain?

2014-08-05 Thread Roger Stockton via EV
Lawrence Harris wrote: Keep in mind that if you have just gone up a long hill the motor and commutator will be hot and over-speeding it on the downhill run may still damage it even though the current is now low (or zero). I think it's probably best to keep the RPM in the safe range under the

Re: [EVDL] Hybrid Mustang: motorcycle drivetrain?

2014-08-05 Thread Roger Stockton via EV
Ben Goren wrote: The AC-51s use 6207-2RS bearings; my main job is to research their side loading capacity. However, Bill says there're a number of side-loaded AC- 35s out there, and that he thinks I'm probably okay -- though, of course, I need to confirm that. If anybody can suggest a good

Re: [EVDL] Question about amp-hr

2014-07-10 Thread Roger Stockton via EV
Cor van de Water wrote: Reason is that Li-Ion batteries are sized by Ah so it is normal to say what size (Ah) battery cells you have, if you want to indicate which version cells are in your pack, but if you want to tell the energy in the pack then it only makes sense if you tell (or know)

Re: [EVDL] EVLN: Hertz not deriding Spark EV as nothing more than a compliance car

2014-06-12 Thread Roger Stockton via EV
Rick Beebe wrote: There's compliance and then there's compliance. There are, I believe, 7 states other than California that have ZEV mandates as well. I was able to get a Smart ED because I live in one of them. But I can't get a Honda FIT or Spark EV or Fiat 500e because those are California