EV Digest 6001
Topics covered in this issue include:
1) Re: 914 power req (was RE: Lithium-ion batteries & Valence Group
buy
by "Peter VanDerWal" <[EMAIL PROTECTED]>
2) Re: Request Porsche 914 power requirements at 65mph
by "Peter VanDerWal" <[EMAIL PROTECTED]>
3) Re: $25,000 Performance Car
by "Roy LeMeur" <[EMAIL PROTECTED]>
4) Re: Anybody lnow the watt hour per kg numbers for nimhi batteries?
by "Dmitri" <[EMAIL PROTECTED]>
5) Re: $25,000 Performance Car
by Jack Murray <[EMAIL PROTECTED]>
6) Re: Citicar on Hummer commercial
by "Lawrence Rhodes" <[EMAIL PROTECTED]>
7) Re: Cruise control?
by "Lawrence Rhodes" <[EMAIL PROTECTED]>
8) Re: EV2 GM TV spot.
by "Lawrence Rhodes" <[EMAIL PROTECTED]>
9) Re: GoWheel.com and Lithium
by [EMAIL PROTECTED]
10) I have a CitiCar for sale
by "Chuck Alldrin" <[EMAIL PROTECTED]>
11) RE: GoWheel.com and Lithium
by "Don Cameron" <[EMAIL PROTECTED]>
12) Re: GoWheel.com and Lithium
by "Dmitri" <[EMAIL PROTECTED]>
13) Re: Cruise control?
by "Michael Perry" <[EMAIL PROTECTED]>
14) Re: Lithium Polymer batteries
by Dennis Hogan <[EMAIL PROTECTED]>
15) Re: Lithium Polymer batteries
by "Ryan Stotts" <[EMAIL PROTECTED]>
16) Re: $25,000 Performance Car
by David Dymaxion <[EMAIL PROTECTED]>
17) CitiCar and S-10 pickup for sale
by "Chuck Alldrin" <[EMAIL PROTECTED]>
18) Odd size batteries as buddy pairs.
by "Lawrence Rhodes" <[EMAIL PROTECTED]>
19) Re: EVDL breaks old record for number of posts per day!
by Lock Hughes <[EMAIL PROTECTED]>
20) Re: Cruise control?
by "Bill Dennis" <[EMAIL PROTECTED]>
21) Re: Anybody lnow the watt hour per kg numbers for nimhi batteries?
by Victor Tikhonov <[EMAIL PROTECTED]>
22) Re: lee's emeter companion?
by Lee Hart <[EMAIL PROTECTED]>
23) Re: $25,000 Performance Car
by David Dymaxion <[EMAIL PROTECTED]>
24) Re: lee's emeter companion?- DC-DC isoloation?
by Victor Tikhonov <[EMAIL PROTECTED]>
25) Re: GoWheel.com and Lithium
by "Death to All Spammers" <[EMAIL PROTECTED]>
26) Re: $25,000 Performance Car
by "Death to All Spammers" <[EMAIL PROTECTED]>
27) Re: lee's emeter companion?
by Victor Tikhonov <[EMAIL PROTECTED]>
28) Re: $25,000 Performance Car
by "Ryan Stotts" <[EMAIL PROTECTED]>
29) EV submission to NPR soundclips series?
by John <[EMAIL PROTECTED]>
30) Re: lee's emeter companion?- DC-DC isoloation?
by [EMAIL PROTECTED]
31) Re: $25,000 Performance Car
by [EMAIL PROTECTED]
32) Re: EVDL breaks old record for number of posts per day!
by Nathaniel Olsen <[EMAIL PROTECTED]>
33) Re: I have a CitiCar for sale
by [EMAIL PROTECTED]
34) RE: I have a CitiCar for sale
by Cor van de Water <[EMAIL PROTECTED]>
--- Begin Message ---
Not really...Coefficient of Drag takes the vehicles shape into account.
Normally it is determined by measuring the actual drag on the vehicle in a
wind tunnel, measuring the frontal area and then calculating the Cd. (well
that's the way they used to do it, now they frequently use computer
modeling).
But at any rate, the shape of rear (and the front and everything else)
affects the drag and is therefor PART of the Cd.
>
>
> Peter VanDerWal kirjoitti:
>
>> My notes indicate that the Cd for a 914 is .38 , which is really pretty
>> bad one of the worst for Porsches. It does have a small frontal area
>> though.
>
> More important is the form of the rear end. The "vacuum" vehicle
> generates to the rear end forms 80% of the drag.
>
> I just have to admire the rear of the EV1... It must have been a real
> experience to drive it in higher speeds.
>
> My brick-alike-van feels like it's just about to tip over in highway at
> 75 mph. A true near death experience and adrenaline rush....
>
> -Jukka
>
>
>
--
If you send email to me, or the EVDL, that has > 4 lines of legalistic
junk at the end; then you are specifically authorizing me to do whatever I
wish with the message. By posting the message you agree that your long
legalistic signature is void.
--- End Message ---
--- Begin Message ---
> Then you could take this data and do some very insightful analysis. I
> could do all of this, except I don't know how to read the pack
> voltage, and amp draws into a computer (linux). There has to be some
> external IO things, which can plug into a serial or USB port. Anyone
> ever done this or can point me in the right direction to get it done?
Sure, it's called an E-meter with a serial port. OK they changed the name
to Link-10. Anyway, most of the EV parts places sell them.
It reads out (over the serial port) every second with the current,
voltage, power, etc.
>
> Hell, you could even set the system up to plug into the internet from
> time to time and upload the data into a central place (evalbum?).
>
> On 10/10/06, Peter VanDerWal <[EMAIL PROTECTED]> wrote:
>> Any 914 pilots out there that can run a quick test and tell us what the
>> power requirements are on flat level ground with no wind?
>> Preferably an average power requirement taken going both directions on
>> the
>> same stretch or road.
>
>
--
If you send email to me, or the EVDL, that has > 4 lines of legalistic
junk at the end; then you are specifically authorizing me to do whatever I
wish with the message. By posting the message you agree that your long
legalistic signature is void.
--- End Message ---
--- Begin Message ---
Jack Murray wrote:
I'm taking orders for all of you that say you'd buy it if you could,
and I'm not kidding one bit.
You may not be kidding but you are certainly living in La-La Land.
I am not gonna be as easy on ya as some of the other posters. We have a lot
of newbies on this list and some of them may actually believe this stuff.
Have you ever heard of voltage sag?
NiMH sags substantially under even light loads.
You can't simply multiply nominal voltage by current and come up with a
horsepower number.
A Corvette? Did you know that the body is not a structural member in the
Vette? It takes a way heavier than normal chassis to support all that
fantastic plastic. Conventional cheap fiberglass panels designed to last
more than one race usually weigh -more- than the steel equivalent. GM has
been making a better Vette in recent years, but they have traditionally been
way heavy for what they are.
How many motor controllers have you built?
I can hear Otmar and Damon snickering :^D
Got labor? What about all the thousands of dollars worth of required
components that you left out of the equation?
You apparently have no idea of what it takes to do a conversion.
You gonna pay qualified folks $5 per hour? Get real.
Being the entrepeneur that I am, I'm always interesting in creating
solutions to problems and limitations, find faster, easier, cheaper ways.
Fast, cheap, or good. Pick two.
Are you sure you are not a troll? :^D
A little knowledge is a dangerous thing.
Give some folks an inch and they will take a mile.
Folks... please do your research before spouting off like you are an
authority on any given subject.
I apologise to the regulars for the rant, but this type of thing is likely
to mislead many of the newbies who don't know any better.
end rant<
...
Roy LeMeur
NEDRA NW Regional Director
www.nedra.com
My EV and RE Project Pages-
http://www.angelfire.com/ca4/renewables/evpage.html
Informative Electric Vehicle Links-
http://www.angelfire.com/ca4/renewables/evlinks.html
--- End Message ---
--- Begin Message ---
NiMH 70 wh/kg.
Li-ion 100 - 200 wh/kg.
Ultracaps 5 wh/kg
----- Original Message -----
From: "GWMobile" <[EMAIL PROTECTED]>
To: <[email protected]>
Cc: <[EMAIL PROTECTED]>
Sent: Tuesday, October 10, 2006 3:40 PM
Subject: Anybody lnow the watt hour per kg numbers for nimhi batteries?
Anybody know the watt hour per kg numbers for nimhi batteries?
I think lithium ion is less than 190 whr/kg right?
What about for supercapacitors.
www.GlobalBoiling.com for daily updated facts about hurricanes,
globalwarming and the melting poles.
www.ElectricQuakes.com daily solar and earthquake data.
--- End Message ---
--- Begin Message ---
arrogance is a dangerous thing
Roy LeMeur wrote:
Jack Murray wrote:
I'm taking orders for all of you that say you'd buy it if you could,
and I'm not kidding one bit.
You may not be kidding but you are certainly living in La-La Land.
I am not gonna be as easy on ya as some of the other posters. We have a
lot of newbies on this list and some of them may actually believe this
stuff.
Have you ever heard of voltage sag?
NiMH sags substantially under even light loads.
You can't simply multiply nominal voltage by current and come up with a
horsepower number.
A Corvette? Did you know that the body is not a structural member in the
Vette? It takes a way heavier than normal chassis to support all that
fantastic plastic. Conventional cheap fiberglass panels designed to last
more than one race usually weigh -more- than the steel equivalent. GM
has been making a better Vette in recent years, but they have
traditionally been way heavy for what they are.
How many motor controllers have you built?
I can hear Otmar and Damon snickering :^D
Got labor? What about all the thousands of dollars worth of required
components that you left out of the equation?
You apparently have no idea of what it takes to do a conversion.
You gonna pay qualified folks $5 per hour? Get real.
Being the entrepeneur that I am, I'm always interesting in creating
solutions to problems and limitations, find faster, easier, cheaper ways.
Fast, cheap, or good. Pick two.
Are you sure you are not a troll? :^D
A little knowledge is a dangerous thing.
Give some folks an inch and they will take a mile.
Folks... please do your research before spouting off like you are an
authority on any given subject.
I apologise to the regulars for the rant, but this type of thing is
likely to mislead many of the newbies who don't know any better.
end rant<
...
Roy LeMeur
NEDRA NW Regional Director
www.nedra.com
My EV and RE Project Pages-
http://www.angelfire.com/ca4/renewables/evpage.html
Informative Electric Vehicle Links-
http://www.angelfire.com/ca4/renewables/evlinks.html
--- End Message ---
--- Begin Message ---
Well they are getting one call from me right now. I'm on hold & they are
getting that information for me right now. Lawrence Rhodes........
----- Original Message -----
From: "David Roden" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, October 10, 2006 6:16 AM
Subject: Re: Citicar on Hummer commercial
> > Reaches brilliant conclusion, runs from building, hops into his EV
(complete
> > with electric whine) and goes out to buy a GM Hummer.
>
> I wonder how many calls GM have gotten asking where to buy one of those
> little electric cars.
>
>
> David Roden - Akron, Ohio, USA
> EV List Assistant Administrator
>
> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> Want to unsubscribe, stop the EV list mail while you're on vacation,
> or switch to digest mode? See how: http://www.evdl.org/help/
> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> Note: mail sent to "evpost" or "etpost" addresses will not reach me.
> To send a private message, please obtain my email address from
> the webpage http://www.evdl.org/help/ .
> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>
--- End Message ---
--- Begin Message ---
I don't know about mind regen but there is no technical reason the factory
cruise control wouldn't work if it was hooked up to your pot box. Lawrence
Rhodes.....
----- Original Message -----
From: "Bill Dennis" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, October 10, 2006 6:35 AM
Subject: Re: Cruise control?
> > What about a cars original cruise control?
>
> I haven't thought this through deeply, but wouldn't the car's original
> cruise control have trouble slowing down the car when it needed to?
> When the pedal is let up on an ICE car, engine breaking decreases the
> vehicle's speed. But with an electric motor, the car wouldn't slow down
> much at all. So when the car was on a slight downhill slope, for
> example, I'd think it would pick up velocity and increase beyond the
> desired speed. Seems like you'd need some type of mind regen to slow
> down the car, like kicking in the original alternator and charging the
> 12V battery with it.
>
> Bill Dennis
>
--- End Message ---
--- Begin Message ---
All indoor amusement rides are electrically powered. Lawrence
Rhodes.........
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, October 10, 2006 11:11 AM
Subject: RE: EV2 GM TV spot.
>
>
> This is an advertisement for the GM pavillion at EPCOT in Orlando Fl. They
have
> a really nice EV that runs through a mockup of the GM testing grounds. It
is powered
> by an electric powered car that has really nice acceleration. Video clip
is the
> high speed area (~60 mph). You can see hole in center of track where the
power and
> supports are run (no batteries in car).
>
> Really interesting development story. They were delayed opening the track
for almost
> a year. Based on the g forces and keeping the vehicle in its place, they
were eating
> up tires every 3-4 days. They had to redo the track, and make vehicle /
support
> mods to allow such high accelerations while still keeping traction.
>
> Do a google search on EPCOT test track
>
> http://www.allearsnet.com/tp/ep/e_tt.htm
>
>
> Peter
>
>
>
--- End Message ---
--- Begin Message ---
80 volt 18Ah is 5600 dollars? Valance battery 12 volt 100 Ah at 1220
dollars.
Valence 84 volt 100 Ah is 8540 (7x 1220=8540)
GoWheel 80 volt 90 Ah is 28,000 (5x 5600=28,000)
Yes the Valence is not as small or maybe able to put out as much as the A123
but is it really worth three times these prices?
I am not seeing how this is a good deal am I missing something?
Don
In a message dated 10/10/2006 12:38:37 PM Pacific Daylight Time,
[EMAIL PROTECTED] writes:
OK, so they are selling a 80v 18Ah pack that will deliver 560A (30C)
weighing 33lbs (14kg) for between $5,625 and $6,750 depending on whether
you can convince them you are a dealer or not.
So for a 160v 90Ah (similar to what's in my car) I'd be looking at 10
packs for US$56K (I'd become the Aus dealer :-) weighing 140kg.
So it would be capable of maxing out a LV-Z2K (say 150v x 2000A) giving
300KW to the motor.
Ooh baby...
I SO hope this is real...
Mark
--- End Message ---
--- Begin Message ---
In response to the message about someone looking for a CitiCar...
I have a 1975 CitiCar in GREAT shape.. new Batteries, rebuilt brakes and new
Curtis controller. Current Calif. license.
Located in Chico, Ca
Price $4900.
Please email for more information and pictures.
Chuck Alldrin
www.energy-alternatives.com
e-mail: [EMAIL PROTECTED]
***************************************************************
Chuck Alldrin Chico, CA. KN6JS Ham call
"If my people...will humble themselves and pray...I will heal their land."
II Chronicles 7:14
***************************************************************
--- End Message ---
--- Begin Message ---
Well, I will say one thing: we are starting to finally talk lithium. It
must mean the price is starting to get reachable (vs reasonable), the safety
is getting better and EV sized BMS is now a first class citizen.
Don Cameron, Victoria, BC, Canada
see the New Beetle EV project www.cameronsoftware.com/ev
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of [EMAIL PROTECTED]
Sent: October 10, 2006 7:48 PM
To: [email protected]
Subject: Re: GoWheel.com and Lithium
80 volt 18Ah is 5600 dollars? Valance battery 12 volt 100 Ah at 1220
dollars.
Valence 84 volt 100 Ah is 8540 (7x 1220=8540) GoWheel 80 volt 90 Ah is
28,000 (5x 5600=28,000)
Yes the Valence is not as small or maybe able to put out as much as the
A123 but is it really worth three times these prices?
I am not seeing how this is a good deal am I missing something?
Don
In a message dated 10/10/2006 12:38:37 PM Pacific Daylight Time,
[EMAIL PROTECTED] writes:
OK, so they are selling a 80v 18Ah pack that will deliver 560A (30C)
weighing 33lbs (14kg) for between $5,625 and $6,750 depending on whether
you can convince them you are a dealer or not.
So for a 160v 90Ah (similar to what's in my car) I'd be looking at 10 packs
for US$56K (I'd become the Aus dealer :-) weighing 140kg.
So it would be capable of maxing out a LV-Z2K (say 150v x 2000A) giving
300KW to the motor.
Ooh baby...
I SO hope this is real...
Mark
--- End Message ---
--- Begin Message ---
A123 cells are about the same cost as Valence.
But this gowheel pack is Very expensive, yes. Waay too much.
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, October 10, 2006 10:48 PM
Subject: Re: GoWheel.com and Lithium
80 volt 18Ah is 5600 dollars? Valance battery 12 volt 100 Ah at 1220
dollars.
Valence 84 volt 100 Ah is 8540 (7x 1220=8540)
GoWheel 80 volt 90 Ah is 28,000 (5x 5600=28,000)
Yes the Valence is not as small or maybe able to put out as much as the
A123
but is it really worth three times these prices?
I am not seeing how this is a good deal am I missing something?
Don
In a message dated 10/10/2006 12:38:37 PM Pacific Daylight Time,
[EMAIL PROTECTED] writes:
OK, so they are selling a 80v 18Ah pack that will deliver 560A (30C)
weighing 33lbs (14kg) for between $5,625 and $6,750 depending on whether
you can convince them you are a dealer or not.
So for a 160v 90Ah (similar to what's in my car) I'd be looking at 10
packs for US$56K (I'd become the Aus dealer :-) weighing 140kg.
So it would be capable of maxing out a LV-Z2K (say 150v x 2000A) giving
300KW to the motor.
Ooh baby...
I SO hope this is real...
Mark
--- End Message ---
--- Begin Message ---
As a thought... isn't your foot pedal (accelerator) simply a rheostat, going
to your controller, to tell it how much power to apply? Instead of getting
fancy and expensive, install a $2 fader control (of same Ohm) in your dash.
Flip a 2-way switch over, and this would control your controller. Set the
dial to mid range, and adjust from there, after switching over.
If you want to get fancy, make the switch a momentary switch. Press it and
it'd kick in a self-locking relay. Tap your brake to interrupt the current
to the relay and go back to your foot pedal.
Granted, you'd need to use the dial to maintain a given speed, but input to
the motor would be constant. The fancy setup should be under $20, from
Radio-Shaq.
----- Original Message -----
From: "Lawrence Rhodes" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, October 10, 2006 7:29 PM
Subject: Re: Cruise control?
> I don't know about mind regen but there is no technical reason the factory
> cruise control wouldn't work if it was hooked up to your pot box.
Lawrence
> Rhodes.....
> ----- Original Message -----
> From: "Bill Dennis" <[EMAIL PROTECTED]>
> To: <[email protected]>
> Sent: Tuesday, October 10, 2006 6:35 AM
> Subject: Re: Cruise control?
>
>
> > > What about a cars original cruise control?
> >
> > I haven't thought this through deeply, but wouldn't the car's original
> > cruise control have trouble slowing down the car when it needed to?
> > When the pedal is let up on an ICE car, engine breaking decreases the
> > vehicle's speed. But with an electric motor, the car wouldn't slow down
> > much at all. So when the car was on a slight downhill slope, for
> > example, I'd think it would pick up velocity and increase beyond the
> > desired speed. Seems like you'd need some type of mind regen to slow
> > down the car, like kicking in the original alternator and charging the
> > 12V battery with it.
> >
> > Bill Dennis
--- End Message ---
--- Begin Message ---
Which site are you referencing?
=====================
From: Reverend Gadget <[EMAIL PROTECTED]>
Date: 2006/10/10 Tue AM 01:15:19 CDT
To: [email protected]
Subject: Lithium Polymer batteries
I'm wondering what people think about these batteries.
A set of these 150 amphour batteries look like they
would give a lot of range. It looks like three of
these would fit in about the same space as an Orbital,
giving aproximately the same voltage. I understand
that this company is the Chinese partner to Altair
Nanotechnologies.
Gadget
visit my websites at www.reverendgadget.com, gadgetsworld.org,
leftcoastconversions.com
--- End Message ---
--- Begin Message ---
This one: http://www.zqpt.com/english/yysl.asp
--- End Message ---
--- Begin Message ---
All is forgiven, just defending my dream car on my end. :) Low CG, 50/50 weight
balance, IRS, multlink suspension -- lots of sports cars have those. Few have
wheels and tires as large, though -- which would probably hurt it as an EV
unless you were racing.
----- Original Message ----
From: Mike Ellis <[EMAIL PROTECTED]>
To: [email protected]
Sent: Tuesday, October 10, 2006 12:48:24 PM
Subject: Re: $25,000 Performance Car
What made me think that the 'Vette wasn't that great at handling was a
video I saw recently of a Vette that couldn't lose an RX-8. The Vette
would pull away on the straights, but the 8 would catch it under
braking and cornering. But that could have been the difference in the
drivers. But yeah, it looks like the vette is a good 8 or 9 seconds
faster on top gear's track and is right near the top of the list.
However, we're talking 84-91 Vettes here, not new ones... I intended
to follow this up with links describing how terrible the handling in
this generation was, but can't find any and have to admit I'm wrong.
For some reason, I always had it in my head that they didn't handle
all that well. This may be due to something I remembered hearing about
the original Vette and I might have carried it forward. So sorry to
besmirch the Vette handling.
On 10/10/06, David Dymaxion <[EMAIL PROTECTED]> wrote:
> Not sure where you are coming from on the handling -- Corvettes dominate
> stock class autocrossing. A new Corvette recently set a time at Nuhrenburg
> that was one of the fastest ever for a showroom stock car. Check out the list
> of lap times for supercars from the Top Gear show:
>
> <http://www.bbc.co.uk/topgear/powerlaps.shtml>
>
> You have to spend 2 or 3x or more the money to get a car that will outhandle
> a Corvette.
--- End Message ---
--- Begin Message ---
Just a advance notice... I'm going to list 2 of my EV's for sale on eBay
later this week.
If you are interested please contact me directly.
1984 S-10 pickup conversion with power steering, power brakes, and e-meter:
144 volts (US Battery 145's), new tires, good condition, licensed, ready to
drive.
I just tested it and drove 22 miles and used 25% of charge.
$7995.00
-----------------------------
1975 CitiCar: new batteries (48 volts), new Curtis 1209B controller,
licensed for the road.
Good condition, range up to 45 miles and speed about 35-40+ mph.
$4995.00
-----------------------------
Please call me @ 530-899-1835 or email me:
Thanks, Chuck Alldrin
PS: have pictures on request!
www.energy-alternatives.com
e-mail: [EMAIL PROTECTED]
***************************************************************
Chuck Alldrin Chico, CA. KN6JS Ham call
"If my people...will humble themselves and pray...I will heal their land."
II Chronicles 7:14
***************************************************************
--- End Message ---
--- Begin Message ---
Can you mix batteries in buddy pairs and in effect make a new battery? Lets
say a 10ah & a 26ah battery in a pair. Then for 48v lets say use four of
these buddy pairs. Will the little battery get creamed or does the buddy
pair act as a new battery? I have a chance to do this because of space and
availability of battery types. Lawrence Rhodes.......
--- End Message ---
--- Begin Message ---
--- "David (Battery Boy) Hawkins" <[EMAIL PROTECTED]> wrote:
> All,
> Over the last seven day period the number of posts per day have
> averaged 124, breaking the old record of 122 for the week of
> 9-18-05. No wonder I'm not getting anything done!
> BB
You understand this is not a good thing eh? You have heard the
expressions abount being a "victim of ones own Success?"
Just so's ya know. There's a reason for tappin' about setting up
non-list "forums"/whatever...
Sadist thing is to see the msgs from folks signing off the EVDL,
`cause of being swamped w/EV msg traffic.
Witness the Yahoo group Zappy and the new VisforVoltage (Hi Ken!)
More 2 volts, only. thanks
Lock
Toronto
Human/Electric Hybrid
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
--- End Message ---
--- Begin Message ---
Another option, with a Curtis controller for example, might be to
replace the controller's current limit knob with an electrically
adjustable rheostat. Then adjust the rheostat to the maximum current
you want and run with the throttle wide open (5k ohms). Both this
method, and Michael's below, however, would give constant power, but not
constant speed.
Bill Dennis
Michael Perry wrote:
As a thought... isn't your foot pedal (accelerator) simply a rheostat, going
to your controller, to tell it how much power to apply? Instead of getting
fancy and expensive, install a $2 fader control (of same Ohm) in your dash.
Flip a 2-way switch over, and this would control your controller. Set the
dial to mid range, and adjust from there, after switching over.
--- End Message ---
--- Begin Message ---
GWMobile wrote:
Anybody know the watt hour per kg numbers for nimhi batteries?
70 Wh/kg for Ovonic's NiMH used in EV-1.
Victor
--- End Message ---
--- Begin Message ---
Victor Tikhonov wrote:
Excellent Lee, one more option for e-meter replacement. Long due.
What you're designing is very similar to what I've done - a set of
measurement PCB and remote display...
Thanks Victor. By the way, I really like the appearance of your LED
EVision display!
Dealing with small DC-DC converters I found that isolation is least
of the problem if you use planar one. Wound off shelf part may save
you $1.50 but you need to watch out for the tr-r manufacturer to
follow up on the iso film quality, creepage distances, etc.
At present, I wound my own transformer with a Ferroxcube pot core and
bobbin with two separate winding windows. It readily provides the high
isolation, but the separation between windings means it has lower
efficiency. But, I don't want to go into the transformer winding
business! :-) So, I'm trying various commercial transformers to find one
that has high isolation, fits the space available, and whose efficiency
is good enough.
--
Ring the bells that still can ring
Forget the perfect offering
There is a crack in everything
That's how the light gets in -- Leonard Cohen
--
Lee A. Hart, 814 8th Ave N, Sartell MN 56377, leeahart_at_earthlink.net
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David Dymaxion, defender of Corvettes here again. The post made some good
points, but I'd like to offer a correction to the common misconception that the
Corvette is a "way heavy" car.
1988 Corvette: 3200 lbs
2007 Corvette: 3200 lbs
1998 Supra Turbo: 3500 lbs
2007 Mitsubishi Eclipse: 3500 lbs
2007 Nissan 350 Z: 3600 lbs
2007 Porsche Carrera: 3100 lbs
2006 Ford GT: 3350 lbs
1998 Mitsubishi 3000 GT VR4: 3800 lbs
2003 BMW Z8: 3500 lbs
When you compare a Corvette to cars of comparable power, it actually is one of
the lightest, to many people's surprise. You have to move way down in
horsepower, like to a Miata (2500 lbs) or Lotus, to get significantly lighter
as a gas car. When you look at it in terms of pounds/hp, the Corvette starts to
look really really good! :)
Just for fun, let's compare estimated Corvette and Miata glider weights:
Corvette: 3200 lbs - 700 lbs engine - 300 lbs gas tank, radiator, exhaust, etc.
= 2200 lbs.
Miata: 2500 lbs - 300 lbs engine - 200 lbs gas tank, radiator, exhaust, etc. =
2000 lbs.
Those numbers are just estimates, but even if I'm off +- 100 lbs on any number
the gliders are surprisingly close in weight! Note that now you can also put
more weight in batteries into the Corvette and still be at original weight:
Corvette: About 800 lbs batteries, still original weight (25% batteries by
weight).
Miata: About 300 lbs batteries, still original weight (12% batteries by weight).
----- Original Message ----
From: Roy LeMeur <[EMAIL PROTECTED]>
To: [email protected]
Sent: Tuesday, October 10, 2006 7:47:28 PM
Subject: Re: $25,000 Performance Car
...
A Corvette? Did you know that the body is not a structural member in the
Vette? It takes a way heavier than normal chassis to support all that
fantastic plastic. Conventional cheap fiberglass panels designed to last
more than one race usually weigh -more- than the steel equivalent. GM has
been making a better Vette in recent years, but they have traditionally been
way heavy for what they are.
...
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Lee Hart wrote:
You really should add it, especially for lead-acid packs. The single
most useful number it can provide is State of Charge. Without the
Peukert correction, simple amphour or watthour data is all but useless.
Gee, I didn't realize BRUSA Ah counter designers who purposely chose not
to implement Peukert correction (they easily could have) are such an
idiots who keep producing their useless device...
Victor
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> A123 cells are about the same cost as Valence.
>
> But this gowheel pack is Very expensive, yes. Waay too much.
>
And A123 cells can supply 80-100C, depending on your intercell
connections. A Dewalt pack has ten of these cells - if you are buying
enough, you can probably get them near wholesale (online prices run
$160 from non-eBay sellers). Wonder how you could connect them up as a
traction pack *without* removing any of the hardware that keeps them
healthy (i.e. leave all the BMS in place).
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> Just for fun, let's compare estimated Corvette and Miata glider weights:
>
> Corvette: 3200 lbs - 700 lbs engine - 300 lbs gas tank, radiator,
exhaust, etc. = 2200 lbs.
> Miata: 2500 lbs - 300 lbs engine - 200 lbs gas tank, radiator,
exhaust, etc. = 2000 lbs.
>
The engine alone weighs ~700lbs!? How much for the tranny? A direct
drive w/ Z2K running the parallel/series thing on 2 motors sounds ideal.
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Lee Hart wrote:
At present, I wound my own transformer with a Ferroxcube pot core and
bobbin with two separate winding windows. It readily provides the high
isolation, but the separation between windings means it has lower
efficiency. But, I don't want to go into the transformer winding
business! :-) So, I'm trying various commercial transformers to find one
that has high isolation, fits the space available, and whose efficiency
is good enough.
I'm sure you know winding in separate sections without interleaving
leads to higher leakage inductance (thus higher reflected voltage
spikes, lower eff., etc). You don't need to go to a transformer winding
business (I don't want that either), but you might want to design your
transformer and let someone else who is in that business manufacture it.
I for one was not able to find off-shelf part which fits my odd
requirements.
Victor
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Jack Murray wrote:
That looks like a AC55, which costs $1,500.
I didn't realize it was that cheap, that's a heck of a deal..
a controller to dish out that power. Well, I can build one and sell
it for $5,000.
Build the proof of concept and if it out powers the big Zilla; you'll
be like like Otmar building inverters 7 days a week. ;)
Does the inverter idea in your head look more or less like this one?
http://www.metricmind.com/images/l_open.jpg
Your inverter do about 640,000 watts or more? That's all the Zilla can do..
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Has anyone with a working EV ever thought of submitting a recording of
their EV driving down the road to the NPR soundclips series?
http://www.npr.org/templates/story/story.php?storyId=5458371
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You both have a lot more experience than I do about the these but I have
some time as a driver looking at them and wondering about my range.
The factory S-10 EV has a SOC gauge which I have no doubt it is Peukert
corrected same for the factory Ranger. After being use the this type of
reading I
was worried to death when I first started driving a Solectria if I was going
to make it back. I did get the hang of it and it was better than nothing but
using only the Brusa Ah gauge adds to the excitement of driving. As your
batteries age you find out you don't have as many Ah as you use to. Also when
it
gets cold or if you had some heavy draws such as hills you had to take these
type of things into consideration.
I would not say it was worthless but I would not say I was always very
confident about my return trip sometimes. It is surprising how far you can go
at
25 miles an hour when you have to. Even with an accurate SOC I still take into
consideration the driving conditions and using heat, AC, Wipers, rear
defogger that have such effect on range.
Don
In a message dated 10/10/2006 9:51:21 PM Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Lee Hart wrote:
> You really should add it, especially for lead-acid packs. The single
> most useful number it can provide is State of Charge. Without the
> Peukert correction, simple amphour or watthour data is all but useless.
Gee, I didn't realize BRUSA Ah counter designers who purposely chose not
to implement Peukert correction (they easily could have) are such an
idiots who keep producing their useless device...
Victor
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David
They are all to heavy including the Corvette. That is what I found about
just about all newer cars on the road. Some of the smallest cars have
surprising
high weight.
Don
In a message dated 10/10/2006 9:50:58 PM Pacific Daylight Time,
[EMAIL PROTECTED] writes:
David Dymaxion, defender of Corvettes here again. The post made some good
points, but I'd like to offer a correction to the common misconception that
the
Corvette is a "way heavy" car.
1988 Corvette: 3200 lbs
2007 Corvette: 3200 lbs
1998 Supra Turbo: 3500 lbs
2007 Mitsubishi Eclipse: 3500 lbs
2007 Nissan 350 Z: 3600 lbs
2007 Porsche Carrera: 3100 lbs
2006 Ford GT: 3350 lbs
1998 Mitsubishi 3000 GT VR4: 3800 lbs
2003 BMW Z8: 3500 lbs
When you compare a Corvette to cars of comparable power, it actually is one
of the lightest, to many people's surprise. You have to move way down in
horsepower, like to a Miata (2500 lbs) or Lotus, to get significantly lighter
as
a gas car. When you look at it in terms of pounds/hp, the Corvette starts to
look really really good! :)
Just for fun, let's compare estimated Corvette and Miata glider weights:
Corvette: 3200 lbs - 700 lbs engine - 300 lbs gas tank, radiator, exhaust,
etc. = 2200 lbs.
Miata: 2500 lbs - 300 lbs engine - 200 lbs gas tank, radiator, exhaust, etc.
= 2000 lbs.
Those numbers are just estimates, but even if I'm off +- 100 lbs on any
number the gliders are surprisingly close in weight! Note that now you can
also
put more weight in batteries into the Corvette and still be at original weight:
Corvette: About 800 lbs batteries, still original weight (25% batteries by
weight).
Miata: About 300 lbs batteries, still original weight (12% batteries by
weight).
----- Original Message ----
From: Roy LeMeur <[EMAIL PROTECTED]>
To: [email protected]
Sent: Tuesday, October 10, 2006 7:47:28 PM
Subject: Re: $25,000 Performance Car
...
A Corvette? Did you know that the body is not a structural member in the
Vette? It takes a way heavier than normal chassis to support all that
fantastic plastic. Conventional cheap fiberglass panels designed to last
more than one race usually weigh -more- than the steel equivalent. GM has
been making a better Vette in recent years, but they have traditionally been
way heavy for what they are.
...
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Since all the messages are basically text they aren't really hurting the
bandwidth. For people getting swamped I've seen groups use mandatory
subject tags to make it easier to find relevant information.
On Tue, 10 Oct 2006 22:18:55 -0600, Lock Hughes <[EMAIL PROTECTED]>
wrote:
--- "David (Battery Boy) Hawkins" <[EMAIL PROTECTED]> wrote:
All,
Over the last seven day period the number of posts per day have
averaged 124, breaking the old record of 122 for the week of
9-18-05. No wonder I'm not getting anything done!
BB
You understand this is not a good thing eh? You have heard the
expressions abount being a "victim of ones own Success?"
Just so's ya know. There's a reason for tappin' about setting up
non-list "forums"/whatever...
Sadist thing is to see the msgs from folks signing off the EVDL,
`cause of being swamped w/EV msg traffic.
Witness the Yahoo group Zappy and the new VisforVoltage (Hi Ken!)
More 2 volts, only. thanks
Lock
Toronto
Human/Electric Hybrid
--
Nathaniel Olsen
--
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And for the person looking for a project car, I have one I would let go of for
1K. Needs batteries and some TLC of course. David Chapman.
Quoting Chuck Alldrin <[EMAIL PROTECTED]>:
> In response to the message about someone looking for a CitiCar...
> I have a 1975 CitiCar in GREAT shape.. new Batteries, rebuilt brakes and new
> Curtis controller. Current Calif. license.
> Located in Chico, Ca
> Price $4900.
> Please email for more information and pictures.
>
> Chuck Alldrin
>
>
>
> www.energy-alternatives.com
>
> e-mail: [EMAIL PROTECTED]
>
> ***************************************************************
> Chuck Alldrin Chico, CA. KN6JS Ham call
> "If my people...will humble themselves and pray...I will heal their land."
> II Chronicles 7:14
> ***************************************************************
>
-------------------------------------------------
FastQ Communications
Providing Innovative Internet Solutions Since 1993
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Hi David,
It may be interesting to know where you (and the car) are located
Cor van de Water
Systems Architect
Email: [EMAIL PROTECTED] Private: http://www.cvandewater.com
Skype: cor_van_de_water IM: [EMAIL PROTECTED]
Tel: +1 408 542 5225 VoIP: +31 20 3987567 FWD# 25925
Fax: +1 408 731 3675 eFAX: +31-87-784-1130
Proxim Wireless Networks eFAX: +1-610-423-5743
Take your network further http://www.proxim.com
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Behalf Of [EMAIL PROTECTED]
Sent: Wednesday, October 11, 2006 12:57 AM
To: [email protected]
Subject: Re: I have a CitiCar for sale
And for the person looking for a project car, I have one I would let go of
for
1K. Needs batteries and some TLC of course. David Chapman.
Quoting Chuck Alldrin <[EMAIL PROTECTED]>:
> In response to the message about someone looking for a CitiCar...
> I have a 1975 CitiCar in GREAT shape.. new Batteries, rebuilt brakes and
new
> Curtis controller. Current Calif. license.
> Located in Chico, Ca
> Price $4900.
> Please email for more information and pictures.
>
> Chuck Alldrin
>
>
>
> www.energy-alternatives.com
>
> e-mail: [EMAIL PROTECTED]
>
> ***************************************************************
> Chuck Alldrin Chico, CA. KN6JS Ham call
> "If my people...will humble themselves and pray...I will heal their
land."
> II Chronicles 7:14
> ***************************************************************
>
-------------------------------------------------
FastQ Communications
Providing Innovative Internet Solutions Since 1993
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