EV Digest 6224
Topics covered in this issue include:
1) Re: A123 EV pack (was Re: Lithium-ion batteries & Valence Group buy)
by "Bob Rice" <[EMAIL PROTECTED]>
2) RE: Zap Xebra
by "Joseph H. Strubhar" <[EMAIL PROTECTED]>
3) Re: What does it take to upgrade a Curtis controller?
by James Massey <[EMAIL PROTECTED]>
4) RE: A123 EV pack (was Re: Lithium-ion batteries & Valence Group buy)
by "Myles Twete" <[EMAIL PROTECTED]>
5) RE: planning on abusing a PMG132
by dale henderson <[EMAIL PROTECTED]>
6) RE: DC/DC QUESTION
by "Roger Stockton" <[EMAIL PROTECTED]>
7) RE: A123 EV pack (was Re: Lithium-ion batteries & Valence
Group b uy)
by "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
8) Re: A123 EV pack (was Re: Lithium-ion batteries & Valence
Group buy)
by "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
9) Re: Used Batteries WAS Re: [BULK] RE: If I only need a 5 mile range ...
rea...
by "Lawrence Rhodes" <[EMAIL PROTECTED]>
10) Re: A123 EV pack (was Re: Lithium-ion batteries & Valence Group buy)
by [EMAIL PROTECTED]
11) 4703 new potential Mazda gliders go to scrap
by John Nicholson <[EMAIL PROTECTED]>
12) Re: NiMH Battery Pack Proposal
by "Michaela Merz" <[EMAIL PROTECTED]>
13) Re: [evco]: Segways in Ontario
by Lock Hughes <[EMAIL PROTECTED]>
14) Battery Calculator
by Gary Van Ravenswaay <[EMAIL PROTECTED]>
15) Re: NiMH Battery Pack Proposal, comments
by "Bob Rice" <[EMAIL PROTECTED]>
16) Re: NiMH Battery Pack Proposal
by Jack Murray <[EMAIL PROTECTED]>
17) Re: NiMH Battery Pack Proposal
by "Dmitri" <[EMAIL PROTECTED]>
18) EV Grin...
by [EMAIL PROTECTED]
19) Re: EV Grin...
by Lock Hughes <[EMAIL PROTECTED]>
20) OT - 1.3 Million WO Electricity - now NO GAS
by Steven Lough <[EMAIL PROTECTED]>
21) RE: OT - 1.3 Million WO Electricity - now NO GAS
by "Myles Twete" <[EMAIL PROTECTED]>
22) Wanted: EV Truck in PDX
by "damon henry" <[EMAIL PROTECTED]>
23) Voltage Sag, Cushman
by "Mark E. Hanson" <[EMAIL PROTECTED]>
24) Re: OT - 1.3 Million WO Electricity - now NO GAS
by "Paul G." <[EMAIL PROTECTED]>
25) Re: Battery Calculator
by "Kaido Kert" <[EMAIL PROTECTED]>
26) Re: EV Grin...
by <[EMAIL PROTECTED]>
27) Re: Battery Calculator
by Robert Lemke <[EMAIL PROTECTED]>
28) Re: What does it take to upgrade a Curtis controller?
by <[EMAIL PROTECTED]>
--- Begin Message ---
----- Original Message -----
From: "Adan Vielma" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Sunday, December 17, 2006 3:47 PM
Subject: Re: A123 EV pack (was Re: Lithium-ion batteries & Valence Group
buy)
> What "Great New Battery" is around the corner?
> -Adan
> Hey Adam, an' EVerybody;
I have been hearing this for almost 40 years I have been in an' out of
EV's!About as elusive as world peace. But things ARE looking up, nowadaze.
As we all know, after seeing " Who Killed the Electric Car, EV's
problems(WHY they arent in showrooms) aren't technical, but Political.
My two Watts Worth
Bob....stuill waiting.
> ----- Original Message -----
> From: "Osmo S." <[EMAIL PROTECTED]>
> To: <[email protected]>
> Sent: Saturday, December 16, 2006 11:06 AM
> Subject: A123 EV pack (was Re: Lithium-ion batteries & Valence Group buy)
>
>
> > Bryan,
> >
> > if you are not in a hurry, you may want to consider A123s. This is a
> > respond I got from them:
> >
> > "We're working on several standard modules that potentially may be
> > applicable; however I can't project their availability at this point.
> > I believe there is a good opportunity that either A123, or one of our
> > partners, will have a pack suitable for use in EVs sometime in 2007.
> > Sorry I can't be more specific. I think we'll be in a better position
> > to forecast new products in the next few months."
> >
> > But of course there is always the Great New Battery just around the
> > corner..
> >
> > Terveisin, Osmo
> >
> >
> >
> >
> > Bryan kirjoitti 16.12.2006 kello 2.01:
> >
> >> Don,
> >> I've been considering the Valence batteries for a while, but
> >> have been away from the EV list for a while. After reading through
> >> all the archived posts regarding a possible Valence group buy and
> >> doing the math, I am seriously considering a pack of 27 of the 40Ah
> >> U1-12XP if we could get the 50+ quantity price or better yet the
> >> 250 or 1000+ price break. From the EV list posts, however, I could
> >> not tell whether anyone has actually begun compiling a list to
> >> actually organize the group buy. It looks like you have been
> >> dealing with Valence a fair amount. Have you started a list?
> >> Thanks,
> >> Bryan Avery
> >>
>
>
>
> --
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--- Begin Message ---
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Behalf Of Lawrence Long
Sent: Sunday, December 17, 2006 5:50 PM
To: [email protected]
Subject: Zap Xebra
Does anyone here have one? If so, how reliable do you think it will be?
>From what I read in this site's archives, the vehicles have been in
production for around six months. If anyone has one, what is it's practical
range? The manufacture says 40 miles, but I figure it probably has a
practical range of around 20 on level terrain.
Thanks,
Lawrence
of Glendale, CA
Larry (Electric Wheels)says it depends on the batteries used. These vehicles
come from the factory
with gel cells. Almost every vehicle he sells in Salem they want the upgrade
to an Interstate maintenance-free
battery. I will check these batteries out, and let you know what I find out.
Joseph H. Strubhar
E-Mail: [EMAIL PROTECTED]
Website: www.gremcoinc.com
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3:17 PM
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--- Begin Message ---
At 09:54 AM 17/12/06 -0600, Lee Hart wrote:
James Massey wrote:
I keep seeing on Ebay Curtis controllers in voltages up to 36 volt,
at 400A or so. Assuming that Curtis only use one type of diode,
would it be possible to upgrade (for example) a 12V 400A controller
into a 120 volt, 400A controller?
Possible? Yes. Practical? No.
If you compare a Curtis 1209 36v golf cart controller to a 1231 EV
controller, you'll find that the control logic board is virtually
identical. You could change a few parts on the boards, and interchange
them. The 36v board would have weaker gate drive and other limitations,
but would more or less work.
The big challenge is that all the parts in the power section have to
change. All the capacitors, all the diodes, and all the MOSFETs; over 100
parts. The new parts will be too big to fit on the old board. Plus, they
increased the number of parts. Thus, you need an entirely new PC board.
The new board won't fit in the case, so you need a new case, too. Unless
your time is free, and you get all the new parts for free, you might as
well buy a new controller.
--
Thanks Lee, that was pretty much the catch I was expecting. Although I
could build a controller I choose to use my time elsewhere (heck, I work
with electronics as my 'day job', there is only so much you can take). A
controller up-rate would be a short-cut to build up one (and if it blows up
I can fix it). But that much work... no.
Regards
[Technik] James
--- End Message ---
--- Begin Message ---
> > What "Great New Battery" is around the corner?
> > -Adan
> > Hey Adam, an' EVerybody;
>
> I have been hearing this for almost 40 years I have been in an' out of
> EV's!About as elusive as world peace. But things ARE looking up, nowadaze.
> As we all know, after seeing " Who Killed the Electric Car, EV's
> problems(WHY they arent in showrooms) aren't technical, but Political.
>
> My two Watts Worth
>
> Bob....stuill waiting.
And the fact is that we've been hearing and waiting about better batteries
coming around the corner for the past 100years!
Edison's Nickel Iron battery was the big thing 100 years ago as were
advances in lead acid battery construction to improve stability, capacity,
life, etc.
Similarly, wild claims for revolutionary EV's and batteries have persisted
for 100 years or more.
This claim in a 1916 edition of Automobile Magazine from 90 years ago is
simply a riot to read!:
"Headline: Battery That Will Recharge and Marked Economy Features of New Car
Boston, Mass, Sept 16--- Plans are now under way here to build an electric
car with a battery that will recharge itself when running on level ground,
and which can run 2 or 3 days without getting a boost. It will run very
cheaply, will weigh less than 1500 lbs. and will sell in the neighborhood of
$500. Plans are under way to place the stock on the market, and the men
behind it are all big enough so that their names mean something. The man
who has devised the machine has a national reputation in the electrical
world, and is connected with the biggest company in the country making
electrical apparatus.
An experimental car has been throughly tried out and it has proved a
success. More complete details regarding the new car will be available as
soon as the manufacturing arrangements are under way."
-Myles
--- End Message ---
--- Begin Message ---
i don't know much about motors or electronics, but the graph has symmetry and a
0-intercept, so i assume that that some of the lines are modeled, hence the
added information.
Rod Hower <[EMAIL PROTECTED]> wrote: I completly misread these speed torque
curves and
Myles is correct. The efficiency in the normal
operating range really is not that bad. I was thrown
off by the complete range they show and swapped one of
the Y axis numbers. If they want to convey useful
information to the customer it should only show a
range of operation like the Thunderstruck site. Why
would you show a speed torque curve going out to
locked rotor current at 1400Amps?
Anyhow, this motor would probably do fine on the
go-cart with an appropriate controller. An Alltrax
48V 300-400Amp control would do just fine.
Rod
--- Myles Twete wrote:
> Paul Compton offered:
>
> > >I just checked out the speed torque curves at
> > >
> http://www.robotmarketplace.com/images/pmg_132_e.pdf
> > > Very strange indeed!
> >
> > Yes, so strange that they can't possibly be right.
> The PMG 132
> > performance is between the Etek and an original
> Lemco or the Agni Motor
> > (http://www.agnimotors.com/home/) that Cedric
> himself is producing.
> > The curves for the motor at;
> > http://www.thunderstruck-ev.com/perm_specs.htm
> > are much more what I'd expect.
>
> Wrong. BOTH are correct!
> BOTH chart pages show voltage, torque, power and
> efficiency versus current.
> Once again, the difference is that the curves on the
> pmg_132_3.pdf file page
> show these characteristics from ZERO to the 1400+amp
> theoretical SHORT
> CIRCUIT CURRENT (Isc), while the curves on the
> Thunderstruck site show only
> for current from 0 to 200amps.
>
> Clearly, if you extrapolated the Thunderstruck
> curves out 7-times further to
> 700amps, you'd see the efficiency drop to 50% and at
> 1400amps, go to zero
> also.
>
> I appreciate seeing the full range, though except
> for the easy computation
> of internal resistance from Isc and Voc, 80% of the
> curves aren't any use.
>
> -Myles Twete, Portland, Or.
>
>
check out my blog:
http://geocities.com/hendersonmotorcycles/blog.html
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--- End Message ---
--- Begin Message ---
[EMAIL PROTECTED] wrote:
> I am planning to increase my battery pack from 108 volts to
> 120 volts. The DC/DC isa Curtis 1400E model #1201. The
> input voltage is listed as 72/96 output is 13.5. The
> current input measures 106 volts and the current measures
> 13.7 The question is what will happen when the pack voltage
> is increased to 120 volts.
BANG! ;^>
Seriously, the 72/96 rating on these is already optimistic. I suspect
you must have yours wired such that it is disconnected from the pack
while charging, because the peak input voltage rating of this DC/DC is
too low for it to even survive the peak charge voltage of a 96V flooded
pack. I don't recal lthe rating offhind, but seem to recal it being
perhaps 114V-ish, so it would not survive being fed from a 120V pack
even if you did take care to disconnect it while charging.
Curtis does make a version of this DC/DC that accepts 120/144V in; if
you are otherwise happy with the Curtis DC/DC, you might consider
selling the 72/96 one and replacing it with a new 120/144V unit.
> Will the output voltage increase?
Nope. The output is regulated so it will remain 13.5V regardless of the
input voltage (as long as the voltage is within the rated input range).
Cheers,
Roger.
--- End Message ---
--- Begin Message ---
A123 batteries are going into plug-in hybrids, even as we speak. Not
at all "un-obtainium". Check out:
http://www.hybrids-plus.com/ Simply plunk down the money and drive
away a plug-in hybrid a few weeks later.
Keep in mind that the tech support and customer service department is
small at A123 systems and they are very busy working with customers
that already are buying large quantities of cells.
As we know all too well, EV homebuilders tend to do a lot of
discussing and ask a lot of questions, then often don't buy anything.
If you are serious (like with a check in hand,) I can get you lined
up with very competent folks that will build an A123 Systems pack for
your EV. Most homebuilders don't have the deep pockets it takes to
buy such a cutting-edge technology pack for their EVs, however. For a
large, simple, EV type pack, figure about $20 per cell plus the cost
of the BMS and shipping.
The cells are indeed available, but, as I said, cutting edge
technology is not cheap.
Bill Dube'
At 02:16 PM 12/17/2006, you wrote:
Don't you know that battery made out of unobtanium,
that comes with an Endless Life (tm) guarantee and
which you can charge in a Jiffy from any regular wall
outlet, weight and size will favorably compare to
space-age pillows and the cost will be lower than
golf cart batteries when mass produced?
As you see - the "Great New Battery around the corner"
is often used in figurative speaking - to warn each other
for the overhyped claims of batteries due soon that we
are expected to wait for by their makers.
Well, if we want our cars to run today, we better buy today's
available and affordable and tested batteries, then when
the time comes to replace the pack, we can always see what
progress has been made and change choice...
Regards,
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 Adan Vielma
Sent: Sunday, December 17, 2006 12:48 PM
To: [email protected]
Subject: Re: A123 EV pack (was Re: Lithium-ion batteries & Valence Group
buy)
What "Great New Battery" is around the corner?
-Adan
----- Original Message -----
From: "Osmo S." <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Saturday, December 16, 2006 11:06 AM
Subject: A123 EV pack (was Re: Lithium-ion batteries & Valence Group buy)
> Bryan,
>
> if you are not in a hurry, you may want to consider A123s. This is a
> respond I got from them:
>
> "We're working on several standard modules that potentially may be
> applicable; however I can't project their availability at this point.
> I believe there is a good opportunity that either A123, or one of our
> partners, will have a pack suitable for use in EVs sometime in 2007.
> Sorry I can't be more specific. I think we'll be in a better position
> to forecast new products in the next few months."
>
> But of course there is always the Great New Battery just around the
> corner..
>
> Terveisin, Osmo
>
>
>
>
> Bryan kirjoitti 16.12.2006 kello 2.01:
>
>> Don,
>> I've been considering the Valence batteries for a while, but
>> have been away from the EV list for a while. After reading through
>> all the archived posts regarding a possible Valence group buy and
>> doing the math, I am seriously considering a pack of 27 of the 40Ah
>> U1-12XP if we could get the 50+ quantity price or better yet the
>> 250 or 1000+ price break. From the EV list posts, however, I could
>> not tell whether anyone has actually begun compiling a list to
>> actually organize the group buy. It looks like you have been
>> dealing with Valence a fair amount. Have you started a list?
>> Thanks,
>> Bryan Avery
>>
--- End Message ---
--- Begin Message ---
Just drop by the track when I race the KillaCycle, if you want a demo
of A123 Systems cells in a large scale EV pack getting fast charged. :-)
Bill Dube'
At 02:11 PM 12/17/2006, you wrote:
EEStor :) Dont ask which corner though ..
If AltairNano and Phoenix would demo their fast charge capability on
large-scale app like EV, i'd be impressed as well.
-kert
On 12/17/06, Adan Vielma <[EMAIL PROTECTED]> wrote:
What "Great New Battery" is around the corner?
-Adan
----- Original Message -----
From: "Osmo S." <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Saturday, December 16, 2006 11:06 AM
Subject: A123 EV pack (was Re: Lithium-ion batteries & Valence Group buy)
> Bryan,
>
> if you are not in a hurry, you may want to consider A123s. This is a
> respond I got from them:
>
> "We're working on several standard modules that potentially may be
> applicable; however I can't project their availability at this point.
> I believe there is a good opportunity that either A123, or one of our
> partners, will have a pack suitable for use in EVs sometime in 2007.
> Sorry I can't be more specific. I think we'll be in a better position
> to forecast new products in the next few months."
>
> But of course there is always the Great New Battery just around the
> corner..
>
> Terveisin, Osmo
>
>
>
>
> Bryan kirjoitti 16.12.2006 kello 2.01:
>
>> Don,
>> I've been considering the Valence batteries for a while, but
>> have been away from the EV list for a while. After reading through
>> all the archived posts regarding a possible Valence group buy and
>> doing the math, I am seriously considering a pack of 27 of the 40Ah
>> U1-12XP if we could get the 50+ quantity price or better yet the
>> 250 or 1000+ price break. From the EV list posts, however, I could
>> not tell whether anyone has actually begun compiling a list to
>> actually organize the group buy. It looks like you have been
>> dealing with Valence a fair amount. Have you started a list?
>> Thanks,
>> Bryan Avery
>>
--- End Message ---
--- Begin Message ---
Good luck with that battery. Let the group know how it performs. I suspect
it will be dissapointing with that weight & specs. it looks like a starting
battery. If it is a marine battery you will have better luck. If it is
used for short distance it might work but don't ever take it down below 50%
DOD. Lawrence Rhodes...
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Sunday, December 17, 2006 1:58 PM
Subject: Re: Used Batteries WAS Re: [BULK] RE: If I only need a 5 mile range
... rea...
> Check out Walmart for EverStart part number MAXX-29, 120 AH 12 volt marine
> battery that weighs 57 lbs for 64.96 this is the cheap battery I am going
to
> use in my VW Bug for now.
> They are a little heavy but with that amount of amp hours I should have a
> very long range in a light car.
>
--- End Message ---
--- Begin Message ---
Where do you race that bike at?
Jeffrey
--- End Message ---
--- Begin Message ---
http://www.autoblog.com/2006/12/15/mazda-scrapping-all-cars-aboard-capsized-cougar-ace/
*******************************************************************
Mazda just announced that it has decided to scrap all 4,703 vehicles
that were aboard the Cougar Ace cargo vessel when it nearly capsized off
the Aleutian Islands in Alaska back in late July. The shipping vessel
sat listing to one side for over a month before it was towed to and
repaired at a port in Oregon. During that time, the vehicles on board,
comprised of the Mazda3 small car and CX-7 crossover, were tied down at
severe angles. Mazda had previously told us it would inspect all the
vehicles and sell most as used with full disclosure, considering that
many showed little or no signs of damage. Regardless, Mazda reconsidered
and the announcement that the entire shipment would be scrapped came
today from Jim O'Sullivan, Mazda North America's President and CEO.
The decision not to sell any of the vehicles that were aboard the Cougar
Ace must have been difficult to make, considering that we estimate the
hull of the ship contained over $103 million worth of vehicles (60
percent of the vehicles on board were the more expensive CX-7, so we
assumed a conservate per unit average MSRP of $22,000). Not that we're
criticizing Mazda for scrapping the entire shipment, but the destruction
of 4,703 vehicles, at least some if not most of which are salveagable,
seems like a waste. We're sure there are plenty of non-profit
organizations and charities that would be grateful to take these
vehicles off of Mazda's hands.
--- End Message ---
--- Begin Message ---
Jack:
> Just wanted to repost and remind everyone of the offer on the table,
> particularly the 40 people of which I've not heard from.
> I realize before xmas not many are thinking of spending thousands on a
> battery pack, but this offer will expire at some point.
> Jack
>
>
I was among those who signaled interest. However, I need quite a bit more
than 90 A continuous, 180 A peak. To approach highway speeds, I need
approx. 150A cont and to get moving about 250 peek.
Too bad ..
mm.
--- End Message ---
--- Begin Message ---
Hmmmm... sorry `bout that. The link is to a "playlist", and I guess
YouTube doesn't provide access that way unless logged aboard as a user.
If you select Categories from the Home page, and pick "Autos &
Vehicles", a search *within the category* for "segway" puts these just
about top of the list.
Tks
Lock
Toronto
Human/Electric Hybrid Pedestrian
--- "Mark W. Walton" <[EMAIL PROTECTED]> wrote:
> Lock, can you check that link? It takes me to the YouTube login page,
> not to
> the videos, and I don't have an account. A search on Segway turns up
> 5 pages
> worth, not sure which ones you're referring to.
>
> Mark Walton
> [EMAIL PROTECTED]
>
> Lock Hughes wrote:
> > http://www.youtube.com/my_playlists?p=C63CDAF74589FA44
> > or tinyURL here:
> > http://tinyurl.com/yazydp
> >
> > These three videos were shot by a crew of CBC *radio* reporters as
> > part of a course that gets them into television...
> >
> > Their assignment, produce a segment for TV about the Segway in
> > Ontario.
> >
> > Each of the three reporters cut/edited their footage to produce
> three
> > different versions. These were never intended for TV broadcast.
> >
> > Thanks
> >
> > Lock Hughes
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--- Begin Message ---
Greetings all,
I'm a highly infrequent contributor to this list (time
is the issue not interest!). I was wondering if anyone
knows of a battery calculator available on the web.
I'm doing some theoretical what if for a ground-up EV
and I need to get some idea of space allocation for
batteries. I'm thinking fairly high performance. Can
I simply take target horsepower divided by probable
voltage to get amps required then just look at battery
specs and do the math or do I need a fudge factor? Am
I forgetting something? Thanks in advance for the
advice!
Gary Van Ravenswaay (hopeful future EV'er!)
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--- Begin Message ---
----- Original Message -----
From: "Michaela Merz" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Monday, December 18, 2006 9:33 AM
Subject: Re: NiMH Battery Pack Proposal
>
> Jack:
>
> > Just wanted to repost and remind everyone of the offer on the table,
> > particularly the 40 people of which I've not heard from.
> > I realize before xmas not many are thinking of spending thousands on a
> > battery pack, but this offer will expire at some point.
> > Jack
> >
> >
>
> I was among those who signaled interest. However, I need quite a bit more
> than 90 A continuous, 180 A peak. To approach highway speeds, I need
> approx. 150A cont and to get moving about 250 peek.
> With a 300 volt plus system you should be golden?!
> Too bad ..
Hope isn't lost...yet?
> Hi EVerybody.
I guess ya could use a light Optima type thing for starting, squealing
out, passing, all that kind of acrobatics and charge them while going down
the road at a more modest pace from the Nimh packs, or use Crapaciters?It
would be easier, and nicer to have just one pack, and MORE ,like 300 volts
or more,of it,or be happy with Old VW performance?
My two watts worth
Bob
> mm.
>
>
>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.409 / Virus Database: 268.15.22/590 - Release Date: 12/16/06
>
>
--- End Message ---
--- Begin Message ---
The discharge rates are for a single 120v 9Ah block.
If you have three of them (for 27Ah, similiar to 10 pack of Yellow
Tops), you would get 270A continous, and 540A peak, cost is $2700 vs
$1600 for Yellow Tops.
Jack
Michaela Merz wrote:
Jack:
Just wanted to repost and remind everyone of the offer on the table,
particularly the 40 people of which I've not heard from.
I realize before xmas not many are thinking of spending thousands on a
battery pack, but this offer will expire at some point.
Jack
I was among those who signaled interest. However, I need quite a bit more
than 90 A continuous, 180 A peak. To approach highway speeds, I need
approx. 150A cont and to get moving about 250 peek.
Too bad ..
mm.
--- End Message ---
--- Begin Message ---
180 amps per 9Ah block...
If you are buying 10 blocks, that is 1800 amps.
----- Original Message -----
From: "Michaela Merz" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Monday, December 18, 2006 9:33 AM
Subject: Re: NiMH Battery Pack Proposal
I was among those who signaled interest. However, I need quite a bit more
than 90 A continuous, 180 A peak. To approach highway speeds, I need
approx. 150A cont and to get moving about 250 peek.
Too bad ..
mm.
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I have noticed that you do not have to drive an EV to have an EV grin. While
driving my wife's new EV around town, I notice that everyone around is looking
and grinning. Many try to ask me about it while driving down the road and
stopped at traffic lights. Sometimes a cell phone will emerge from another car
to take a picture as I go by. So far, I haven't seen a frown anywhere around
me while I'm in the EV.
Grinning is a good thing. Just thought I would share that!
Ken
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It's disturbing to hear the local Segway business (owner) describing
the "Segway Smile"...
Lock
Toronto
Human/Electric Hybrid Pedestrian
--- [EMAIL PROTECTED] wrote:
> I have noticed that you do not have to drive an EV to have an EV
> grin. While driving my wife's new EV around town, I notice that
> everyone around is looking and grinning. Many try to ask me about it
> while driving down the road and stopped at traffic lights. Sometimes
> a cell phone will emerge from another car to take a picture as I go
> by. So far, I haven't seen a frown anywhere around me while I'm in
> the EV.
> Grinning is a good thing. Just thought I would share that!
>
> Ken
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I am surprised, no one has chimed in from the North West (WA. OR.)
about the Thursday night/Friday morning Wind Storm... Worst in over a
decade. Preceeded by a rain squal, that KILLED people here in Seattle
Proper...
Waiting to hear stories about Generators saving the day, DC-AC Inverters
keeping the Furnace and Holiday Lights going. Etc...
We are OK.. Neighborhood round U-Village (NE Seattle) only out for less
than 2 hours Thursday night. Went all the way to Whidbey Island to
check out our cabin on Lagoon Point. All OK their now too. Power back
on.. But my sister is really hurting, in rural SE King County. That
is why I wrote our local Seattle EV Group with an URGENT CALL to borrow
a generator from some one not needing it right now...
But now all the gas stations which have HAD power, are OUT OF GAS from
unprecidented DEMAND from folks driving in to town from the burbs..
As of this a.m. still a quarter million w/o heat or light...
Seattle Times: http://seattletimes.nwsource.com/html/home/index.html
Got to be some good EV stories out there...
--
Steven S. Lough, Pres.
Seattle EV Association
6021 32nd Ave. N.E.
Seattle, WA 98115-7230
Day: 206 850-8535
Eve: 206 524-1351
e-mail: [EMAIL PROTECTED]
web: http://www.seattleeva.org
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> I am surprised, no one has chimed in from the North West (WA. OR.)
> about the Thursday night/Friday morning Wind Storm... Worst in over a
> decade. Preceeded by a rain squal, that KILLED people here in Seattle
> Proper...
It was nasty here in Portland also.
Living on a bluff with south facing windows, we ductaped the windows on
Thursday as we had heard possibility of 90mph winds...it was bad, but
nothing happened at our house, not even a shingle gone and we never lost
power.
At my brother's place in Redmond, Washington, they lost 4 big trees and were
without power from Thurs nite until late Sat. morning. No trees hit their
house luckily, but many in their neighborhood weren't as lucky. Just before
power came back on for my brother, I began calling Honda generator
dealerships in the northwest to find him a larger one than the 2kw one I
have here in Portland. Apparently there was such a run on generators in NW
Washington that you couldn't find one anywhere from Tacoma north. I found a
few remaining 3.0 and 3.5kw Hondas available in Olympia, but soon after the
power came on in Redmond...they had been forecasting power being out for a
week there at least.
Lots of power lines down and houses damaged regionally.
Hundreds of thousands still without power at this time.
Fallen trees are primarily to blame.
We don't have trees, but we have a generator.
We're lucky.
-Myles Twete, Portland
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Hi,
If you are in or around the Portland Oregon area and you know of someone
wanting to get rid of their S10 or similar conversion or you see a good
donor keep me in mind. My son turns 16 this April, and we are considering a
small truck for him to take to school. It would be fun to convert one
together, but it's such a big time committment. I would be very tempted
just to buy one already converted or someones project to save some hours.
If I do one myself, I am considering a siamese 6.7 inch motor. I would
recycle the one from my motorcycle, plus use my spare, and let Jim do the
surgery for me. Then I would probably go with two 72 volt Alltrax
contrlollers and to 72 volt strings of BB600s. I like this setup because I
have most of the parts in hand already, and it would be something different
then anyone else has done, plus the lower system voltage is easier to get
parts for. I don't have the controllers, but unlike the, short on supply,
Zillas, the Alltraxs are easy to purchase. Range isn't my number one issue,
but this setup would likely keep me down in the low 20s at best which is a
little lower then I would like to be. It is more than enough for his
driving to school needs, but it would limit us to Vancouver unless we are
going someplace in Portland where charging is available. Or I may go with
some golf cart batteries and a Zilla set to keep the gc batteries at a low
enough current draw. Then I could get more range. Does it actually damage
GC batteries to draw higher currents, or do they just sag so badly that it
is a losing proposition on the Power side of things. If I really wanted a
Zilla, I guess I could drive down to Corvallis and do some yard work or
something for Otmar to bump myself ahead in line :-)
Of course the easiest thing would be to find a finished conversion with at
least most of the components in working order. Then my son and I could
spend some quality time wrenching, and have him a new ride in a reasonable
amount of time. Plus there is always years of upgrades to look forward to.
I even took a look at what Clunn conversions are currently available. I'd
be tempted if they weren't 3000 miles away.
Damon
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Hi,
Check John Q Riley's 3-wheel website before you move the batteries around.
My Cushman was 70% rear, 30% front for optimum stability with 12ea US-145's to
get 30 miles at 45mph. I sold it to Captian Robbie who lives on a boat (my boy
calls him Sponge-Bob-Square-Pants). Now I'm working on a fold-in-half Porsche
914 since the job moved further away on the freeway. (Got most of the frame
replaced & floorpan)
Cheers,
Mark
Date: Sat, 16 Dec 2006 14:55:21 -0800 (PST) From: "Robert Lemke"
<[EMAIL PROTECTED]> Subject: voltage sag AGM vs floodies To:
[email protected] Plain Text Attachment [ Scan and Save to Computer |
Save to Yahoo! Briefcase ]
Hi all, Been copying the mail for a year but need to post to get
some knowledge. My Cushman with (9) 8 volt Trojans drops from 75 volts to
something in the 50's on a 250 amp pull. Within a year we will have stores
nearby and I won't need the range of 30+ miles and would like something
peppy. I use Hawker 680's on an Etek powered scooter and am pleased with life
and performance. Since I'll need less that a 3 mile range, I am considering
going to (7) Hawker 680's for the Cushman. This will reduce its weight by 480
lbs and increase the pack voltage to 84 volts. I think my charger can be
adjusted up to cover this and I hope the controller can handle it. My
question is has anyone documented voltage sag of floodies vs AGM's? Of course
comments on my plan would be appreciated also. Thanks,
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On Dec 18, 2006, at 9:33 AM, Steven Lough wrote:
But now all the gas stations which have HAD power, are OUT OF GAS from
unprecidented DEMAND from folks driving in to town from the burbs..
As of this a.m. still a quarter million w/o heat or light...
Seattle Times: http://seattletimes.nwsource.com/html/home/index.html
Got to be some good EV stories out there...
I don't have a good EV story, but north Lynnwood and south Everett took
the storm quite well with the wind never exceeding 70 mph. There is no
trouble getting gas or groceries up here. Throughout the storm I never
lost power.
Its OT, but perhaps the tip to go north can help some King or Kitsap
County EVers still having storm related issues.
Paul "neon" G.
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Something like that ?
http://www.evconvert.com/tools/evcalc/?s=b
-kert
On 12/18/06, Gary Van Ravenswaay <[EMAIL PROTECTED]> wrote:
Greetings all,
I'm a highly infrequent contributor to this list (time
is the issue not interest!). I was wondering if anyone
knows of a battery calculator available on the web.
I'm doing some theoretical what if for a ground-up EV
and I need to get some idea of space allocation for
batteries. I'm thinking fairly high performance. Can
I simply take target horsepower divided by probable
voltage to get amps required then just look at battery
specs and do the math or do I need a fudge factor? Am
I forgetting something? Thanks in advance for the
advice!
Gary Van Ravenswaay (hopeful future EV'er!)
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Well said Ken ,, I hadn't though about all the ev grin's from people just
seeing them. Funny thing is I've never had anybody say ,,, " I want a EV so
that any where I go , all I have to do is open the hood and I'll make a crowed
of people smile" . What kind of EV do you have ,,, not that it matters much
,,, almost anything will make people smile .... Now the hard question , why why
why are we still waiting for some car company to cash in on the " New EV
craze" .
Steve Clunn
>
> From: [EMAIL PROTECTED]
> Date: 2006/12/18 Mon AM 11:27:14 EST
> To: [email protected], [EMAIL PROTECTED]
> Subject: EV Grin...
>
> I have noticed that you do not have to drive an EV to have an EV grin. While
> driving my wife's new EV around town, I notice that everyone around is
> looking and grinning. Many try to ask me about it while driving down the
> road and stopped at traffic lights. Sometimes a cell phone will emerge from
> another car to take a picture as I go by. So far, I haven't seen a frown
> anywhere around me while I'm in the EV.
> Grinning is a good thing. Just thought I would share that!
>
> Ken
>
> ________________________________________________________________________
> Check out the new AOL. Most comprehensive set of free safety and security
> tools, free access to millions of high-quality videos from across the web,
> free AOL Mail and more.
>
>
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I use this one http://www.4qd.co.uk/faq/current.html and others on their
site. Also, range is effected by type of motor and other variables but fall in
around 100 w/hr per mile for the lightest, least rolling resistance 3-wheeled
vehicle to about 600 w/hr per mile for a 5000 lb van. Battery voltage and a/hr
will help you crunch range, i.e. 360 volt 94 a/hr traction pack yields 33.8
kw/hr and if you consume 300 w/hr per mile at 60 mph your range would be 112.6
miles providing the 94a/hr is not based on 10 or 20 hour rates.
Kaido Kert <[EMAIL PROTECTED]> wrote: Something like that ?
http://www.evconvert.com/tools/evcalc/?s=b
-kert
On 12/18/06, Gary Van Ravenswaay wrote:
> Greetings all,
>
> I'm a highly infrequent contributor to this list (time
> is the issue not interest!). I was wondering if anyone
> knows of a battery calculator available on the web.
> I'm doing some theoretical what if for a ground-up EV
> and I need to get some idea of space allocation for
> batteries. I'm thinking fairly high performance. Can
> I simply take target horsepower divided by probable
> voltage to get amps required then just look at battery
> specs and do the math or do I need a fudge factor? Am
> I forgetting something? Thanks in advance for the
> advice!
>
> Gary Van Ravenswaay (hopeful future EV'er!)
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
>
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>
> From: "Lawrence Rhodes" <
>
> It's nice to do things yourself but Golftech & now Logisystems will modify
> or produce a controller for you at a reasonable price. Lawrence
> Rhodes......
Logisystems has had a 144v curtis controller that they are fixing for me ,
it's been about 6 months , no word lately when it will be fixed ,, last time I
delt with Golftech ,, if thats the one in florida I think it was over a year to
have a 120v critus fixed , I think they do much better with golf cart
controllers ,,, at the time and I think its been at least 5 years ago ,,,
> > I keep seeing on Ebay Curtis controllers in voltages up to 36 volt, at
> 400A
> > or so. Assuming that Curtis only use one type of diode, would it be
> > possible to upgrade (for example) a 12V 400A controller into a 120 volt,
> > 400A controller?
the golf car controllers are in a smaller box ,,, as you know a 60v fet will
handel a lot more current that a 200v ( what you'ed put in a 120v controller )
so you would need a much bigger box , cap board which the 120 model has
> > I'm guessing that it would be more likely 120 volt 275A, but the theory
> > goes like this:
275amps ( battery amps) is what the 400 amp model realy dose ,,, don't know it
really get 400 motor amps ... but the controller box of a 120v 400 amp is about
2 times the size of the 36v model
> > * Cut the power feed to the control circuitry and put in a suitable DC/DC
> > converter.
ok
> > * Pull all of the electrolytic capacitors in the power stage and replace
> > them with ones rated to the maximum voltage likely to be encountered (this
> > is where I think that the capacity will be reduced by not being able to
> put
> > as much capacity in).
your right there ,,,
> > * Pull the fets and replace them with some of suitable ratings.
> >
> > What am I missing?
> >
I would start with a 120 or 144 blown curtis not a working 36v golf cart
controller .
steve clunn
> > Regards
> >
> > [Technik] James
> >
> >
> >
> >
>
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