Re: [EVDL] '91 BMW 318i conversion to electric

2024-04-25 Thread Bill Dube via EV
What is important to keep in mind is that BYD is is now offering a Corrola-sized EV for about $15k. https://electrek.co/2024/02/19/byd-launches-15k-qin-plus-ev-kicking-off-price-war-gas-cars/ It is impossible to build your own EV for even double this price, even getting all the labor for free.

[EVDL] NEMA 14-60? (was: NEMA 14-50 Receptacles for EVSE, EV Charging)

2024-04-13 Thread Bill Dube via EV
I think the simplest would be to install a NEMA 14-60 with a 60 amp breaker, and swap in a NEMA 14-60 cord cap on the charger. If you are over 50 amps, you are exempt from the NEC GFCI requirements, even outdoors. A bit silly, but this is what the NEC rules say you can do You could

Re: [EVDL] EVLN: Rumor: Tesla abandons $25k EV?

2024-04-07 Thread Bill Dube via EV
I suspect that the competition has recently heated up in the low end of the EV market. It has evolved into the inevitable "race to the bottom." I'm thinking that Elon has acknowledged the lack of profitability in this market sector and has decided to gracefully bow out. There was a news

Re: [EVDL] OT Solar Electrical Issues

2024-03-11 Thread Bill Dube via EV
Most of the world outside North America, is 230-240 VAC to ground. Split single phase, 120-neutral-120, is essentially only in North America. Normal circuit breakers are only single pole and only switch the live conductor. It is not common to find a circuit breaker that cuts the neutral as

Re: [EVDL] OT Solar Electrical Issues (was: Adding a 14/50 EV courtesy outlet to a solar array)

2024-03-11 Thread Bill Dube via EV
The consensus is that ~30mA is the threshold for a fatal shock under ordinary circumstances: https://en.wikipedia.org/wiki/Electrical_injury and https://www.asc.ohio-state.edu/physics/p616/safety/fatal_current.html Thus, most countries pick 30 mA as the trip for GFCI (RCD). Picking a greater

[EVDL] OT Solar Electrical Issues (was: Adding a 14/50 EV courtesy outlet to a solar array)

2024-03-11 Thread Bill Dube via EV
First, breakers themselves really don't care which way the power is flowing. I can't think of anything about a breaker that would behave differently if the power flows in or out of the bus bars. VERY large breakers need power on the input side to rewind the trip mechanism. Even then, you

Re: [EVDL] Adding a 14/50 EV courtesy outlet to a solar array

2024-03-10 Thread Bill Dube via EV
The NEC has changed through the years regarding GFCI protection. 120vac outdoor outlets were required to be GFCI protected since ~1972. In the '80s when I worked as an electrician, outdoor 240 volt NEMA 14-50 outlets were not required to be GFCI protected, but when used to power a hot tub, or

[EVDL] Totally OT, but... (was: Elon Musk: "We should not demonize oil and gas")

2023-12-17 Thread Bill Dube via EV
Just a totally OT comment on this:     I'm retired now, but I used to have several colleagues in climate research. (Basically, they are what a common person would call a climate scientist.) When I spoke with any of them privately, they all expressed the opinion that we have likely "broken the

Re: [EVDL] consumer reports EV reliability

2023-11-30 Thread Bill Dube via EV
These stats don't align with my personal experience. We have owned two used Leafs over the past 7 years and have had zero (0) issues. Changed tires, changed wiper blades, and filled the windshield washer fluid. Never brought either in for any repair. How did Nissan fair compared to others in

Re: [EVDL] I destroyed an A123 26650 by shorting to the case.

2023-11-28 Thread Bill Dube via EV
The A123 26650 M1-B cells will throw over 200 amps to a short circuit. Considerably more if they are at optimum temperature. :-) The short circuit current will actually go up as the cell heats up. This assumes that whatever caused the short hasn't vaporized These are _very_ well designed

Re: [EVDL] Expensive batteries

2023-10-16 Thread Bill Dube via EV
There are often tax advantages to structuring maintenance costs as a lease. Bill D. On 10/17/2023 7:00 AM, EV List Lackey via EV wrote: https://www.businessinsider.com/tesla-owners-bill-battery-damaged-ev- scotland-weather-2023-10 or https://v.gd/yIsSe4 Ouch. That price, $21k, seems a tad

Re: [EVDL] Cell Tower Interference

2023-06-23 Thread Bill Dube via EV
I agree with Phil. I also doubt that cell towers are the root cause of your issue. The problem is likely due to the motor wiring and other power wiring not kept separate/distant from the throttle wiring. The throttle wiring needs to be a small, shielded, 3-wire cable, kept very distant from

Re: [EVDL] Game over the Tesla NACS wins the day

2023-06-11 Thread Bill Dube via EV
When they went from a simple NEMA 14-50 plug for charging to a complicated system that "enables" (requires) your car and the charger to communicate, you unintentionally gave up your privacy when using a public charger. The car and the charger can get quite chummy and share all sorts of

Re: [EVDL] Game over the Tesla NACS wins the day

2023-06-10 Thread Bill Dube via EV
They want to gather data. It has serious value. The vehicle "talks" to the charger and exchanges data. Vehicle type. Vehicle ID. State of charge. Battery health. _Lots_ of data is given to the charger. Bill D. On 6/10/2023 9:52 AM, EV List Lackey via EV wrote: On 9 Jun 2023 at 8:04, Tom

Re: [EVDL] Why Toyota Isn't Rushing to Sell You an Electric

2023-05-19 Thread Bill Dube via EV
Toyota is a closely held business. I believe it may be owned by a family. They were on the forefront of alternative fuels for many years, but they stubbornly would not come out with a battery powered vehicle, until everyone else came out with one and they basically had no choice. I suspect

Re: [EVDL] Electric Plane by Bearhawk kits

2023-04-29 Thread Bill Dube via EV
Hi Mark,     The most straightforward way to add redundancy and to solve the overheating problem is to install a second motor on the same shaft and run it with the second inverter. Close to the redundancy of a twin engine aircraft. He could perhaps reduce the size of each the twin motors

Re: [EVDL] A123 battery charger

2023-04-28 Thread Bill Dube via EV
Charging A123 Systems LiFePO4 cells:     They are fully charged when the voltage reaches 3.45 volts and you should never go over ~3.6 during the charge. If you stay below ~3.6 volts, you can charge these cells at whatever current you care to, just stay below ~3.6 volts. If you go above 3.8

[EVDL] Smaller is not really cheaper (was: Tesla slashes its car prices as much as 20% to prop up sagging sales, where?s the $30K EV? A Chevy Bolt?)

2023-01-22 Thread Bill Dube via EV
Labor is the main expense in car manufacture. Materials for a larger vehicle add only an incremental cost. Luxury options cost just a tiny faction of what they consumer pays for them. It is not uncommon that the luxury option is just a change to the firmware and the additional cost to the

Re: [EVDL] Tesla accepting CCS

2022-12-18 Thread Bill Dube via EV
You haven't actually met Elon, have you. I have it on good authority that Elon is a very very difficult man to work for. This may be why he is so successful, perhaps. What I read in the news lately about Elon seems completely in character for him. I don't doubt anything I have read so far in

Re: [EVDL] the grid needs upgrading - fast

2022-11-24 Thread Bill Dube via EV
Fast charging during the day will be expensive for trucks and thus be unpopular. The fast charger operator will take a cut, and the grid operator will charge peak rates for electricity. Passenger EV's don't typically use fast chargers, they charge at more reasonable speeds and rates at home.

Re: [EVDL] the grid needs upgrading - fast

2022-11-24 Thread Bill Dube via EV
ed by leaf blowers ? https://quietcleanseattle.org/ >> -- Original Message -- From: "Bill Dube via EV" To: ev@lists.evdl.org Cc: "Bill Dube" Sent: 23-Nov-22 14:55:48 Subject: Re: [EVDL] the grid needs upgrading - fast No need upgrade the grid. None. Just need a few inc

Re: [EVDL] the grid needs upgrading - fast

2022-11-23 Thread Bill Dube via EV
No need upgrade the grid. None. Just need a few incentives and a little intelligence. There is a lot of misinformation about this, here on the EVDL even. >> Grid capacity problem ? >>>     There is LOTS of power available on the grid, just not at the peak times of the day.  No

Re: [EVDL] EVLN: EU agrees on 2035 ICEV ban, sort of

2022-10-30 Thread Bill Dube via EV
There are many varieties of Li Ion to choose from. At this point in time, Li Ion appears to be the primary secondary, so to speak, battery choice. :-) Lead acid, much like other legacy technologies, will take some time to fade into the background. It is simply a matter of time. Lead acid

Re: [EVDL] EV taxing

2022-06-14 Thread Bill Dube via EV
    Don't tax fuel. Tax tires.     If you tax tires according to their load rating, and also perhaps by their wear rating, you can properly tax vehicles on how much "road" they are "using up."     There is a down side to this approach. Folks will not replace worn out tires. They will also

Re: [EVDL] leaf heater switch

2022-05-18 Thread Bill Dube via EV
The Leaf has an app that runs on your cellphone that can allow it to pre-heat or pre-cool the car interior while it is plugged in. You can also set a time to do this manually from the dash. Makes a HUGE difference in range if you can use this feature. Easier than defeating the heater somehow.

[EVDL] EVolocity vs Electrathon (Was: Lead acid battery rule (was Electrathon America)

2022-04-24 Thread Bill Dube via EV
substantial government support. It does not have spectator appeal either. I think it is beating a dead horse, unfortunately. On 4/24/2022 2:17 PM, EV List Lackey via EV wrote: On 24 Apr 2022 at 13:55, Bill Dube via EV wrote: Here in NZ, the EVolicity competition supplies an electronic gizmo that

[EVDL] Lead acid battery rule (was Electrathon America)

2022-04-23 Thread Bill Dube via EV
Here in NZ, the EVolicity competition supplies an electronic gizmo that restricts/measures the wattage of the drivetrain. Thus, any type of battery may be used. It's a HS competition, so putting a cap on the wattage actually works. Bill D. On 4/24/2022 4:40 AM, Gary Krysztopik via EV wrote:

[EVDL] OT: Whatever happened to Steve Van Ronk ? (was: Electrathon America)

2022-04-22 Thread Bill Dube via EV
    This Electrathon topic brought to mind Steve Van Ronk, who was a nagging thorn in the side of Electrathon America. Electrathon America finally when to court against Steve. Steve claimed all sorts of infringement etc. for many years and threatened the regional chapters (including Colorado)

Re: [EVDL] Electrathon America

2022-04-22 Thread Bill Dube via EV
Hi Gary et al.     I have built a couple of Electrathon cars (and have great admiration for Dave Cloud's Electrathon designs) and have participated a bit in years past. Educational and great fun for the participants. (Spectators, not so much. )     There is a extremely successful and

[EVDL] The KillaJoule at the Petersen Automotive Museum (Los Angeles)

2022-04-14 Thread Bill Dube via EV
Eva's record setting electric motorcycle, the KillaJoule, is now on display at the Petersen Automotive Museum in Los Angeles Calif. Great photos here: https://www.petersen.org/killajoule They shipped it all the way from New Zealand! The KillaCycle is also on display right next to it, but

[EVDL] Cutting urethane car adhesive (was: Leaf 12 upgrade to 60kw)

2022-04-11 Thread Bill Dube via EV
They typically use a specialized knife to cut this urethane adhesive on windshields and other autobody panels. (The blade used to be heated electrically, but these are falling out of fashion. The old style adhesive was not urethane, but rather more like tar. You had to melt it as much as cut

Re: [EVDL] Followup: Nissan Leaf 2013 Cold Brake (dropout) Recall

2022-03-28 Thread Bill Dube via EV
The float voltage is 13.5 to 13.8 volts. That is what you would expect to see on the battery terminals when the car has been running for awhile. Charging begins at about 13 volts, BTW. All these voltages are at 25 Celsius. Colder means higher charging voltage (and float voltage.) Hotter means

Re: [EVDL] Followup: Nissan Leaf 2013 Cold Brake (dropout) Recall

2022-03-27 Thread Bill Dube via EV
The voltage on a lead-acid battery goes _up_ in cold weather, by the way. Under load in cold weather, however, the higher impedance will tend to make the 12 volt battery voltage sag under load. But the the vehicle DC-DC is working when the brake issue arises, so the battery will play a

Re: [EVDL] Need to find a blocking diode for charger output

2022-03-21 Thread Bill Dube via EV
Mount a five (5) pin male connector ("inlet") on the side of the golf cart for the 120 VAC cord. Connect the 120 VAC hot, neutral, and ground using three (3) of the pins, A, B, C, in both the golf cart and the cord portions of the connector. In the golf cart, use the two (2) remaining pins,

Re: [EVDL] EVLN: Ukraine war and nickel

2022-03-13 Thread Bill Dube via EV
I believe the patent(s) have timed out, and with that, the core legal wranglings have as well. Bill D. On 3/14/2022 7:05 AM, EV List Lackey via EV wrote: On 13 Mar 2022 at 10:59, Michael Ross via EV wrote: I suppose this explains a lot about why Tesla (and Straubel) are leaning hard towards

[EVDL] KillaCycle acceleration (was: LOUD (was: snowmobiling))

2022-02-28 Thread Bill Dube via EV
Lackey via EV wrote: On 1 Mar 2022 at 13:47, Bill Dube via EV wrote: "Do you want to make noise, or do you want to win races and set world records? I'd rather set world records." This pretty much ends the discussion, because it points out the foolishness of the loud exhaust argument.

[EVDL] LOUD (was: snowmobiling)

2022-02-28 Thread Bill Dube via EV
My answer to this "joy of loud ICE noises" statement is: "Do you want to make noise, or do you want to win races and set world records? I'd rather set world records." This pretty much ends the discussion, because it points out the foolishness of the loud exhaust argument. EV's are going to

Re: [EVDL] The electric future of snowmobiling

2022-02-28 Thread Bill Dube via EV
Snowmobiles have power requirements similar to boats or airplanes. Unlike cars (or trains) that draw little power once they are rolling, snowmobiles have considerable drag while moving through the snow. Thus, the range for a given battery capacity can be quite low, especially in deep, wet,

[EVDL] Wheel (hub) motors (was: X-Bus)

2022-02-21 Thread Bill Dube via EV
In a passenger car, at highway speeds, hub motors are a very bad idea. (Slow moving hub motor vehicles, like scissor-lifts and floor scrubbers, are a marvelous idea, BTW.) Pretty much every major automotive manufacturer has prototyped a car with hub motors at one time or another through the

Re: [EVDL] [GGEVA] Car carrier on fire abandoned in Atlantic

2022-02-18 Thread Bill Dube via EV
I think that this ship will likely burn and then sink to the bottom of the ocean. Thus, we will likely never know what actually caused the fire. Having said that, statistically, ICE cars catch fire _far_ more frequently than electric cars. Bill D. On 2/19/2022 3:23 PM, EV List Lackey via EV

Re: [EVDL] Tesla’s Sneaky Rolling Stops

2022-02-04 Thread Bill Dube via EV
Michael -     How, exactly, would Mark be able to provide "factual data" on this incident?  If you think about it, how would _anyone_ be able to, since the device that could record the incident data was off-line at the time it happened and this was the root cause of the incident? Mark

[EVDL] OT: US traffic controls (was: tesla's sneaky rolling stops)

2022-02-01 Thread Bill Dube via EV
    Tesla should treat a stop sign according to the law. However, the computer is acting logically according to the actual situation. I would suspect that there logically should be a yield sign instead of the stop sign. In most civilized parts of the world, stop signs are _extremely_ scarce.

[EVDL] Regen toll (was: Tesla Y actual wall outlet efficiency)

2022-01-04 Thread Bill Dube via EV
With an AC drive, there is no excuse not to use regen. It is built in, and essentially free. At least equipment wise. Regen has significant energy losses, however, so you should use it sparingly, or at least knowledgeably. Typical EV drivetrain losses are in the ~15% range, give or take.

Re: [EVDL] Tesla Y actual wall outlet efficiency

2021-12-30 Thread Bill Dube via EV
On 12/31/2021 4:17 AM, paul dove via EV wrote: Well, that’s not how efficiency is measured but I think I know what you mean. The Wh per mile is mostly a function of weight. Aero starts to weigh in around 55mph. On conversions a good estimate is weight divided by 10. My car weighs 3100 lbs

Re: [EVDL] What type of magic is this nut and where to get a tool for it?

2021-11-16 Thread Bill Dube via EV
I think this one is beyond Harbor Freight. This is a _highly_ unusual fastener. If you can't find the proper socket, you may have to resort to fabricating one, perhaps by milling or grinding five grooves to engage the five nubs on the fasteners, inside a thick-walled socket of the

[EVDL] 40kw vs 40kWhr

2021-11-04 Thread Bill Dube via EV
Unlike an ICE, a more powerful electric drivetrain uses _less_ energy under normal driving than a marginal HP drivetrain. A large inverter and motor run more efficiently at low power because they have larger conductors and less internal resistance than a smaller inverter and motor. Driven

[EVDL] Level 1 charger...Labor costs??? (was: Michigan still spouting FUD. From the Detroit not so free press.)

2021-10-23 Thread Bill Dube via EV
Seriously? You _seriously_ want to _hire_ someone to plug your Level 1 "trickle" charger (that comes with every EV) into a regular wall socket? Seriously? Bill D. On 10/24/2021 1:22 PM, Mark Abramowitz via EV wrote: I know nothing about Level 1 charger costs, so did a quick Google, found

Re: [EVDL] Tesla Launches Entry Model 3 with Newer LFP Battery Tech in the U.S. - TeslaNorth.com

2021-10-23 Thread Bill Dube via EV
If you consider the entire pack design, LFP can approach the specific energy of NMC, NCA and other metal oxide batteries. Can't _quite_ get to the same W-hrs/kg on a pack basis, but may be close. The LFP cells also tend to have lower internal resistance, so the heat generated during discharge

Re: [EVDL] Radio Noise Issue

2021-10-14 Thread Bill Dube via EV
There is zero hope for an AM radio to function correctly in a home built EV. You are inside a metal box next to a 100 kW unshielded broadband AM radio transmitter. Many of the early OEM EV's simply didn't have an AM radio at all, for just this issue. Bill D. On 10/15/2021 1:03 AM, paul

Re: [EVDL] Radio Noise Issue

2021-10-13 Thread Bill Dube via EV
AM radio will pick up EMI via the antenna. A portable AM radio won't work in a homebuilt EV. No hope. A small portable AM radio is a very useful sensor for crude EMI leak detection. Tune to a vacant portion on the dial and move the radio around the device to find were EMI is leaking out.

Re: [EVDL] Radio Noise Issue

2021-10-13 Thread Bill Dube via EV
Radio, particularly AM, is a lost cause on home conversions. The EMI and RFI is just to difficult for the home converter to deal with. Takes serious and time consuming work on shielding and filtering of the EV components and wiring to get it down to a level where you can listen to an ordinary

[EVDL] New land speed record by Vesco and ReVolt

2021-10-05 Thread Bill Dube via EV
Very fast electric streamliner by Vesco racing and powered by ReVolt Systems: /Here's How The Revolt Systems Streamliner Set The Electric Land Speed Record At Bonneville/https://jalopnik.com/heres-how-the-revolt-systems-streamliner-set-the-electr-1847798014 I had a bit of a laugh when the

Re: [EVDL] H2 tank expiration (was OT: fuel cell mining truck)

2021-09-10 Thread Bill Dube via EV
yer via EV wrote: On Fri Sep 10 07:52:03 PDT 2021 ev@lists.evdl.org said: On 10 Sep 2021 at 13:28, Bill Dube via EV wrote: Is it mandatory, though? It seems to be nothing more than a label inside the fuel filler door with a date and a finger-wagging advisory, "Vehicles with expired hydr

[EVDL] Danger to public? (was: H2 tank expiration (was OT: fuel cell mining truck)

2021-09-10 Thread Bill Dube via EV
h under similar conditions. On Fri, Sep 10, 2021 at 5:48 PM EVDL Administrator via EV wrote: On 10 Sep 2021 at 13:28, Bill Dube via EV wrote: This replacement cost is another "nail in the coffin" of H2 fuel cell vehicles. The cost of a battery replacement is less than the cost of _m

Re: [EVDL] "H2 is lighter" (Was OT: fuel cell mining truck)

2021-09-10 Thread Bill Dube via EV
is really tight. Otherwise, I'm really curious: why haven't there been any reported H2 explosions ? Peri << Annoyed by leaf blowers ? https://quietcleanseattle.org/ >> -- Original Message -- From: "Bill Dube via EV" To: ev@lists.evdl.org Cc: "Bill Dube

[EVDL] "H2 is lighter" (Was OT: fuel cell mining truck)

2021-09-09 Thread Bill Dube via EV
Indeed, H2 is very buoyant in air and rises extremely quickly. However, this means that it collects and concentrates at the high points of the ceiling in an enclosed space. Typically, the garage door opener is also in that space, as well as light fixtures, etc. The garage door opener has

[EVDL] H2 tank expiration (was OT: fuel cell mining truck)

2021-09-09 Thread Bill Dube via EV
Typical high pressure cylinders must be re-certified every 5 years. There are specific carbon fiber reinforced cylinders that can fall under DOT regulation (SP-16320) which allows a longer span between re-certification. The typical re-certification procedure requires a physical inspection,

Re: [EVDL] OT: fuel cell mining truck

2021-09-08 Thread Bill Dube via EV
A high pressure hydrogen tank that holds more then 3000 cu ft (uncompressed gas volume) _/*cannot*/_ be stored indoors without very special ventilation equipment, etc. A fuel cell passenger car with a range of 300 miles holds just shy of 2000 cu ft, so a truck would be over that limit and

[EVDL] Ground versus Neutral (was: Will this gizmo let my EV conversion talk to a J-1772)

2021-09-04 Thread Bill Dube via EV
This is, unfortunately, a "common" misconception. (So to speak :-) ) Yes indeed, the ground and neutral conductors are at the same potential. The two conductors serve very different purposes, however. If you connect the neutral conductor of an appliance to the ground conductor by mistake,

Re: [EVDL] Regen Efficiency vs Coasting

2021-08-24 Thread Bill Dube via EV
The round trip efficiency of the motor-inverter-battery-inverter-motor is perhaps 50%. The 15% number comes from the increase in range from having a car with regen, versus one not having regen. In stop and go city driving, that number can go much higher, thus the 25% increase in range. Thus,

Re: [EVDL] Melted LEAF charge port

2021-08-18 Thread Bill Dube via EV
It is very likely to be a high-resistance crimp on either the vehicle side receptacle or the charger plug. It is more likely to be the charger plug. Alternatively, the pins on the vehicle may have been damaged by an abused charge connector on a public charger. (It happens...) Both have likely

Re: [EVDL] hydrogen isn't green, after all

2021-08-14 Thread Bill Dube via EV
ly, shows both BEVs and FCEVs reducing GHGs as compared to fossil combustion ICEs, no matter the input energy. - Mark Sent from my Fuel Cell powered iPhone On Aug 13, 2021, at 5:14 AM, Bill Dube via EV wrote: Here is an article published today on "Clean Hydrogen". (Not so clean, acco

Re: [EVDL] hydrogen isn't green, after all

2021-08-13 Thread Bill Dube via EV
Here is an article published today on "Clean Hydrogen". (Not so clean, according to the article. surprise surprise ) https://www.theguardian.com/environment/2021/aug/12/clean-fuel-blue-hydrogen-coal-study From _all_ I've read, even in Scientific American, you are way ahead simply using plain

Re: [EVDL] Electric mower - small question

2021-07-27 Thread Bill Dube via EV
The dynamic braking on DC lawnmowers is accomplished by the "shorting" the motor with a length of wire, believe it or not. When you turn it off, the power switch on the handle disconnects the battery from the motor and connects a "resistor" to the motor which is simply a bundled hank of

Re: [EVDL] Vandalism charge for charging EV?

2021-05-30 Thread Bill Dube via EV
I would suspect that the Tesla owned by the hotel manager, (or someone in a position of power.) They get a premium parking slot for their car, with charging, plus a guard! Then write it off to the hotel and advertise it as a "perk" to customers. I would send a complaint to Hilton

[EVDL] Cube vs square (was: The state of EV's 1890 to 1922m - cube)

2021-05-16 Thread Bill Dube via EV
The drag _force_ on your vehicle goes up as the square of velocity. F is proportional to V x V     You go twice the speed, the drag force on your car increases by a factor of four. The _power_ (horsepower) requirement due to drag goes up as the cube of velocity. HP is proportional to V x V x

Re: [EVDL] opinion article on hydrogen

2021-05-09 Thread Bill Dube via EV
, reduced emissions compared to the gas alternative, but a fuel cell can perform so much better with zero emissions. - Mark Sent from my Fuel Cell powered iPhone On May 8, 2021, at 5:42 PM, Bill Dube via EV wrote: Gasoline engines are designed to run best on gasoline. They can barely be converted

Re: [EVDL] opinion article on hydrogen

2021-05-08 Thread Bill Dube via EV
Gasoline engines are designed to run best on gasoline. They can barely be converted to run on H2. In a nutshell, H2 has an extremely low motor octane number (MON) of about 60, and the compression must be reduced so much that the engine makes very little power. The low charge density is a

Re: [EVDL] Fixing my over volt charger by putting a resistor across the 12v output

2021-04-26 Thread Bill Dube via EV
A simple resistor won't limit the output voltage when the current tapers off. (When the load resistance becomes larger.) It will still go to 16+ volts and ruin your battery. A simple solution might be to place two, perhaps three, large diodes (rectifiers) in series with the output. You can

Re: [EVDL] I found some Solectria motor controllers

2021-04-19 Thread Bill Dube via EV
    Apache Reclamation. Awesome and bizarre surplus dealer. Worth a visit just to look around.     You never know what you will find at Apache Reclamation. Seriously. I suspect _they_ don't even know what some of the stuff they have is or does.     Bill D. On 4/19/2021 2:21 PM, Ricky

Re: [EVDL] The numbers are in. Replace your EV 12v battery with lithium 1/3 the size of OEM.

2021-04-18 Thread Bill Dube via EV
On a Leaf, the 12 volt battery never experiences the high starting current that a typical starting battery does in an ICE. It is used to supply longer steadier draws. Thus, I would opt for a li-ion battery with similar A-hr capacity as the lead acid it is replacing. Bill D. On 4/19/2021 12:37

Re: [EVDL] EV1

2021-04-13 Thread Bill Dube via EV
The sad fact is that no one actually "owned" an EV1 (with very rare exceptions.) No doubt, many would still be on the road today if GM had allowed private ownership. I had the privilege of driving one when they were first introduced at the EVS-14, and it was a very nice car. I was told a

Re: [EVDL] [External] Re: large drone ?

2021-04-10 Thread Bill Dube via EV
My hypothetical proposal was for EV drones (both tethered and perhaps non-tethered) delivering packages from a truck (which could be an EV) driven by a person. This would be safer as the driver could remain in the truck, and not worry about slippery terrain, strained muscles, viscous dogs, or

Re: [EVDL] large drone ?

2021-04-09 Thread Bill Dube via EV
In my opinion, the "delivery drones" have the wrong paradigm. The delivery drone really doesn't need to travel long distances or carry more than one package. The real issue is the final 50-100 feet of delivery. The UPS driver has to park the truck, get the package out of the back of the

Re: [EVDL] Tesla keyless keyfob fix

2021-04-01 Thread Bill Dube via EV
and when you pull over to take a picture of the beautiful landscape, you discover you cannot restart your Tesla with your phone, because you are out of cell phone coverage. :-( Surprisingly common occurrence. Bill D. On 4/2/2021 10:14 AM, EVDL Administrator via EV wrote: On 1 Apr 2021

Re: [EVDL] BYD Blade

2021-03-29 Thread Bill Dube via EV
Merchants are not allowed to add a surcharge for using a credit card. The credit card folks won't allow it. They want you to spread the cost over all your customers so it isn't so obvious to consumers how much the service actually costs. It is a gray area whether you can apply a cash, or "no

Re: [EVDL] Bottom Balancing Batteries

2021-03-14 Thread Bill Dube via EV
Gordon, We use a "CellPro" PowerLab 8 to initially balance, and cycle our LiFePO4 packs in groups of eight cells (or less.) http://www.store.revolectrix.com/Products/Cellpro-PowerLab-8-EC5-version/Cellpro-PowerLab-8_3299 About $250 and you will realize that you have been sleeping under a

Re: [EVDL] Bottom balancing batteries

2021-03-13 Thread Bill Dube via EV
On 3/14/2021 5:18 AM, Willie via EV wrote:   His primary point was that bottom balanced voltage would drop off so perspicaciously as the battery neared full discharge that there was little risk of ignoring a few low cells as might be the case with top balancing. By "solving" the issue of

Re: [EVDL] Bottom balancing batteries

2021-03-13 Thread Bill Dube via EV
Hi John,     Your very nice Orion BMS will balance your batteries in standard manner ("top" balancing, so to speak.)  Orion makes an outstanding (and a bit pricey) battery management system, with all the bells and whistles if you wish to use those features.     Attempting to perform some

[EVDL] Self-discharge realities (was: Volt module details)

2021-03-07 Thread Bill Dube via EV
What most folks don't realize is that Li-Ion batteries go out of balance, (without a BMS,) and subsequently catch on fire, for a lot of reasons. Cell-to-cell differences in self-discharge is the primary culprit. In poor quality cells, variations in manufacture "bake in" this cell-to-cell

Re: [EVDL] Cheap spot welder.

2020-10-25 Thread Bill Dube via EV
A big part of successful spot welding is ensuring the contact pressure is repeatable. A great deal of effort is put into this because it really matters. This system has zero provision for this important aspect. The welds will either properly weld, explode, or not stick at all, depending on

Re: [EVDL] Miles consumed for altitude

2020-10-14 Thread Bill Dube via EV
    In Colorado, you care about the loss of range when you change altitude because you may not have enough range to; A) get to your destination at the higher elevation, or, B) make the return trip from some location at lower elevation.     For example, if you were to drive you brand new Leaf

Re: [EVDL] Spot weldingu

2020-09-30 Thread Bill Dube via EV
The typical welded pack has two spot welds on each end of the tab. This is the minimum you can get with a resistance welder. I typically put four welds on each end of each tab. I do this in two welding operations well separated in time. This lets the heat dissipate from the first weld. This is

Re: [EVDL] Spot welding questions.

2020-09-29 Thread Bill Dube via EV
The thickness of the tab changes the amperage setting. Thicker equals higher amperage. Start out a very low amperage, and increase it until you get an acceptable weld. Never start out at high amperage. Good way to ruin electrodes and make a mess. (Ask me how I know.) The negative end of the

Re: [EVDL] EVLN: (hd-pr)> LiveWire Sets Record

2020-09-21 Thread Bill Dube via EV
There must be at least ten (10) of the identical vehicles manufactured for it to be able to set a production record in NEDRA. (NEDRA has the least stringent "production" class requirements, by the way. The requirements for production land speed records are far more difficult.) Have there

Re: [EVDL] Chinese electric/plasma jet engine.

2020-08-31 Thread Bill Dube via EV
The NOx pollution would be horrendous. Oxides of nitrogen (NO, NO2, etc.) form when air is heated, like in an engine (or in lightning, for example.) NOx is not particularly stable, so it later breaks down in sunlight in the presence of other pollutants to create ozone (O3). More NOX = more

Re: [EVDL] Soldering vs. spot welding

2020-08-09 Thread Bill Dube via EV
The cell won't last if you solder them. You can' help overheating the terminals. This ruins the separators. They are designed to be spot welded. You really need to use an inverter welder instead of a capacitance welder. Should be 4000 amps peak (at least 3000 amps). Bill D. On 8/10/2020 6:29

Re: [EVDL] LiFePO4

2020-07-09 Thread Bill Dube via EV
Administrator via EV wrote: On 9 Jul 2020 at 14:30, Bill Dube via EV wrote: They altered their focus away from EV batteries and towards other markets that made more sense for LiFePO4 technology. Obviously I'm not in any position to advise them, but I wonder if it might be time for A123 to review

Re: [EVDL] LiFePO4

2020-07-08 Thread Bill Dube via EV
that made more sense for LiFePO4 technology. Bill D. On 7/9/2020 2:17 PM, Willie via EV wrote: On 7/8/20 9:09 PM, Bill Dube via EV wrote: A123 Systems has made high quality LiFePO4 for many years. Does A123 survive?  My recollection is that their major car customer (can't come up

Re: [EVDL] LiFePO4

2020-07-08 Thread Bill Dube via EV
ecific power. Bill D. On 7/9/2020 1:11 PM, Alan Arrison via EV wrote: Where are these mythical cells? They sure aren't from CALB. Al On 7/8/2020 8:06 PM, Bill Dube via EV wrote: I don't think that LiFePO4 has made any remarkable gains in specific energy. What LiFePO4 does have is spect

Re: [EVDL] LiFePO4

2020-07-08 Thread Bill Dube via EV
I don't think that LiFePO4 has made any remarkable gains in specific energy. What LiFePO4 does have is spectacular cycle life. If manufactured with some degree of care, you get 15,000+, 100% SOC, 1C cycles @ 25 Celsius from LiFePO4 without going below 50% of the original capacity. They just

Re: [EVDL] Car-size fire-blanket smothers EV li-ion fire reignitions

2020-06-23 Thread Bill Dube via EV
On 6/23/2020 1:30 PM, Lawrence Winiarski wrote: Bill Dube ->  Do you mean the solvent is flammable?  UggThat could be a big problem.   Do you know what is used? Ethylene carbonate is a common li-ion cell electrolyte. Wikipedia explains that there are several organic solvents that are

Re: [EVDL] Car-size fire-blanket smothers EV li-ion fire reignitions

2020-06-22 Thread Bill Dube via EV
don't halt population growth with justice and compassion, it will be done for us by nature, brutally and without pity - and will leave a ravaged world. Nobel Laureate Dr. Henry W. Kendall On Sunday, June 21, 2020, 4:15:34 PM PDT, Bill Dube via EV wrote: This might work, but the fact

Re: [EVDL] Car-size fire-blanket smothers EV li-ion fire reignitions

2020-06-21 Thread Bill Dube via EV
This might work, but the fact is that nearly all EVs have metal-oxide (ie cobalt) li-ion cells than make their own oxygen internally. Basically a fire blanket is useless in an EV fire, and might even exacerbate an EV fire by holding in the heat. What works is water applied liberally and

Re: [EVDL] LRR Tires: Research tips?

2020-06-17 Thread Bill Dube via EV
I was certain that the Audi 4000 springs were a drop in replacement on the Rabbit. I perhaps the springs varied in diameter from year to year, or perhaps according to the country. Sorry that the spring mounts on the Rabbit needed to be changed. :-(  Not such "good" advice, considering the

Re: [EVDL] LRR Tires: Research tips?

2020-06-16 Thread Bill Dube via EV
Give Woody a call. *1-303-936-0232 *Tell them you are an old friend of Bill & Eva and they will get this "sorted" as they say in NZ. :-)     Bill & Eva > Your choices will probably be wider if you splurge for > 15" wheels and fit lower profile tires... David, thanks, I'll look into the

Re: [EVDL] LRR Tires: Research tips?

2020-06-16 Thread Bill Dube via EV
I would steer away (so to speak) from wheel adapters. They are a kluge at best and dangerous at worst. 4x100mm is a _very_ common size. Supposedly, there are 850 different car models with 4x100mm wheels: https://sizemywheels.com/lz-pcd/4-100   and about half of those have a 38mm offset (ET):

Re: [EVDL] 20s A123 battery pack for ebike

2020-06-11 Thread Bill Dube via EV
Sounds like a heck of a deal. Please keep us informed! Bill D. On 6/11/2020 2:42 PM, Lawrence Rhodes via EV wrote: Below is my order and a few bucks for buyer protection. This will be an experiment and learning experience. Lawrence Rhodes Order details Sales order Sold by zhan-lingj ( 383 )

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

2020-06-07 Thread Bill Dube via EV
We have a huge variac with a bridge diode we call "Mongo charge" that we use if we let the magic smoke out of all our on-track chargers. We _never_ leave it unattended. Ever.     If you (or we) decided to leave such a primitive charger unattended, we would probably use a ~25 Amp, optically

[EVDL] Factual article on Fuel cells (was: (offt) h2 won’t overtake EVs> hampered by science & CO2 lies)

2020-06-04 Thread Bill Dube via EV
Factual piece on hydrogen cost and fuel cells cars in Scientific American: https://www.scientificamerican.com/article/lack-of-cheap-clean-hydrogen-slows-fuel-cell-cars/ Bill D. On 6/5/2020 7:39 AM, Peri Hartman via EV wrote: Me, neither. I'm just trying to figure out how they came up with their

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