Re: [EVDL] Shorted FB1-4001A DC motor?

I'm pretty sure terminal resistance is supposed to be 0.03 ohms so a normal ohmmeter won't tell you much... How about spin the motor in neutral with a (fused) 12V battery? Any signs of arcing on the commutator? -Ben On Dec 27, 2016, at 1:13 PM, Jay Summet via EV wrote: >

Re: [EVDL] $52M/yr 'Quiet (Electrified) cars' alert-sound rules by 2019/09

Amen, Lee. If quiet cars are truly the problem, the requirement should be universal. Singling out EV's certainly has the appearance - even if not the intent - of hostility and intentionally limiting their appeal. I tend to believe the current action is merely a case of narrow-mindedness, but

Re: [EVDL] Where 20 amp receptacles are required

On Jan 20, 2016, at 11:13 AM, Bill Dube via EV wrote: > If you are planning on plugging in an EV daily into a 120 volt outlet, you > would likely want to eventually change it out for a "hospital grade" type > receptacle. These are really designed to take constant, daily,

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

Indeed - the Bolt display appears to me to indicate how the energy has been spent in an almost pie chart (pink, purple, green). The pink icon (arrow) suggests driving energy, the purple icon (snowflake) suggests climate control and the green (battery) I guess might be 12V. If my reading is

Re: [EVDL] Charging Profile: Charge to 80% capacity (quickly)

Hi Jay, I think your approach is good. Some chargers (Elcon, at least) let your BMS throttle charge current with an external voltage signal. If your charger supports this, you could try wiring up a comparator and a flip-flop to latch the signal at 0A when you hit your target voltage at 30A.

Re: [EVDL] [SPAM?] Ten states impose flat EV fees, Georgia is highest

I agree we should incentivize low-pollution vehicles, but this is is actually a punitive road use fee. Georgia's gas tax is $.075/gallon. If you drive 16k miles/year (US average) at 22MPG (rough average accounting for older cars), you're paying about $55 toward road maintenance. The $300 EV

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

Really? I was pretty sure the title of first megawatt all-electric race car went to the Maniac Mazda over a decade ago... -Ben On Apr 1, 2015, at 9:50 PM, Ben Goren via EV ev@lists.evdl.org wrote: Seems reasonably legit. Nothing about it seems unreasonable.

Re: [EVDL] Cold Charging Lithium Experiences

Lots of great info on this thread! I was actually revisiting the literature on this recently myself. Although my 914 is garaged for the winter, it happens to be at home this year (with its transmission in pieces), and I wanted to top off the battery in case we lost power in all the crazy

Re: [EVDL] Scrapping an EV

A lot of charities and even public radio stations accept old cars as donations. Shop around to see if your car might be of value to one of them. -Ben On Jan 13, 2015, at 8:04 PM, Bill Dennis via EV ev@lists.evdl.org wrote: I didn't have any takers on my Starter EV, Just Add Batteries offer.

Re: [EVDL] 9-Inch ADC Motor Max Voltage

I run a 9 ADC from a 53-cell LiFePO4 pack (170V nominal); I've only put about 5000 miles on the car, but no issues so far. That said, I've had issues with rotor balance, so I tend to operate at lower RPM's, which means I'm limiting the DC voltage across the motor. -Ben On Jan 9, 2015, at

Re: [EVDL] Tesla EV downs utility pole in Paramus, NJ jamming evening traffic

Hi Bruce, First, let me say that I enjoy your newswires and appreciate all the effort you put into the EV community. ...but I really don't think some idiot crashing a Tesla is list-worthy news. -Ben On Dec 3, 2014, at 4:37 AM, brucedp5 via EV ev@lists.evdl.org wrote:

Re: [EVDL] EVLN: Leaf owners – beware the gas station car wash!

I steer clear anyway. They can scratch the heck out of your finish. And windows. -Ben On Oct 13, 2014, at 3:43 AM, brucedp5 via EV ev@lists.evdl.org wrote: http://scholarsandrogues.com/2014/10/06/leaf-owners-beware-the-gas-station-car-wash-renewable-journal-for-1062014/ Leaf owners –

Re: [EVDL] 'We're developing a prototype battery powered train'...

I would think overhead catenary lines would actually be cheaper, and one could do that study without building a prototype... On Aug 15, 2014, at 3:06 AM, Martin WINLOW via EV ev@lists.evdl.org wrote:

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

For your hybrid application, I'd go with the AC. One word: regen -- without it to recharge the battery, hybrid mode is of little benefit; better to just disengage the motor altogether. I get decent performance out of my Porsche 914 with a single 9 DC motor in 3rd gear (although it tops out

Re: [EVDL] Hybrid Mustang: batteries

Too bad A123 went under. Their cells would have been PERFECT. You could consider the EnerDel high-power modules carried by evolve electrics (and possibly others, but I haven't seen them elsewhere). They're more expensive than CALB/Thundersky but better suited to your application. 32Ah/44V

Re: [EVDL] Question about amp-hr

People talk in amp-hours because it's easy and/or they're being sloppy. Batteries are sold in standardized packages (1 cell @ 3.6V for lithium, 3 or 6 cells at 6V or 12V for lead) at which amp-hours is the metric used to differentiate different capacities. But when you build a big series

Re: [EVDL] What serious EVs are available, at what price how do they compare?

I know it's not a 'true' EV, but definitely don't forget the noble Chevy Volt. At just $34k before tax credit, it provides decent EV range (unlike the other PIH), decent performance, a coddled battery that will last forever, actual back seat and trunk space (unlike the puny Leaf), and

Re: [EVDL] EVLN: Their CEO sez Don't buy the Fiat 500e EV

, May 24, 2014 at 11:41 AM, Ben Apollonio via EV ev@lists.evdl.org wrote: On May 23, 2014, at 9:06 PM, Michael Ross michael.e.r...@gmail.com wrote: No, there is no economy of scale with the low numbers they are building. That is a fact. Not on the electric drivetrain

Re: [EVDL] EVLN: Their CEO sez Don't buy the Fiat 500e EV

How exactly is it that Fiat can't produce a teensy car with a tiny battery for less than $46k when small (i.e. lacking economies of scale) upstart Tesla is able to rake in 25% gross margins on a massive, high-performance luxury car with 3x the battery that starts at 70k (which puts the

Re: [EVDL] Miles Remaining

You say that like it's past tense! I still have this on my electric Porsche 914, though only for lack of funds/time... -Ben On May 13, 2014, at 7:08 PM, Jan Steinman via EV ev@lists.evdl.org wrote: From: Michael Ross via EV ev@lists.evdl.org It had another training system - where you

Re: [EVDL] Miles Remaining

You, sir, have just described the battery gauge Tesla uses (though the display is a tad fancier). Except they added tick marks every 10% for extra convenience. I find the 'ignorant masses' are capable of learning. They may not (and very likely won't) fully understand what a kilowatt-hour is,