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Today's Topics:

   1. Re: back emf etc, etc. ([EMAIL PROTECTED])
   2. Re: battery tab welding (minhd)
   3. XS500 model is still projected to sell for $30, 000 to $35,
      000 in the United States.". car is supposed to be in showrooms at
      the end of 2008,  (Geopilot)
   4. Re: GMS battery? (Dan Frederiksen)
   5. Looking for Advanced DC 8" motor (Steve Robertson)
   6. Re: back emf on a driven wheel ... (EVDL Administrator)
   7. Re: Looking for Advanced DC 8" motor (EVDL Administrator)
   8. Re: UK EV Van (martin winlow)
   9. RE : spark EV (wayne alexander)
  10. Re: GAUGES FOR MY EV? (Lee Hart)
  11.  Zivan Charging Interlocks (Sarah & Erik)
  12. Re: Spark-EV's Zotye - Forum up (Stuart Friedrich and Wendy Lyn)
  13. Re: RE : spark EV (Bob Rice)
  14. Re: UK EV Van (Jeff Major)
  15. Re: GAUGES FOR MY EV? (Roland Wiench)
  16. Re: Max motor voltage? (Jim Husted) (Jeff Major)
  17. Spark EV pictures (Dan Frederiksen)


----------------------------------------------------------------------

Message: 1
Date: Wed, 06 Feb 2008 22:20:58 -0800
From: [EMAIL PROTECTED]
Subject: Re: [EVDL] back emf etc, etc.
To: ev@lists.sjsu.edu
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain;       charset=ISO-8859-1;     DelSp="Yes";
        format="flowed"

> Afraid this is nonsense- in fact it's a repeat of previous plans.
> They're thinking that people won't buy the "free energy" or  
> "perpetual motion" thing so they just say the energy works better.   
> But no you can't take the energy you put into a motor and somehow  
> recycle it.
>
> Motors can already be high efficiency- like in the 90%+ range.  Some  
> of the loss is in wire/brush/commutator resistance, a lot in the  
> hysteresis losses of inducing and releasing the magnetic flux in the  
> iron which is unavoidable if you want it to move.  But even if you  
> had a "fantastic" solution that broke all known laws to give  
> virtually 100% efficiency, it would only get you a small gain.
>
> Anyhow, that being said this may sound plausible to some but it's  
> just conventional quackery/fraud dressed up a bit to make it sound  
> possible.  But it's quackery nonetheless and thus not an [EVDL] topic.
>
> Danny

Well said. Postings like this usually mention "high school dropout" or  
some similar euphemism for "doesn't know sh!t" -- an especially useful  
excuse for ideas that disobey the laws of physics. A vehicle needs "X"  
amount of energy to run at a certain speed with certain environmental  
conditions and will need *at least* that much, even from a 100%  
efficient system, and never less. There is no such thing as a free  
lunch, but there is such a thing as bad science.



------------------------------

Message: 2
Date: Wed, 6 Feb 2008 23:35:14 -0800 (PST)
From: minhd <[EMAIL PROTECTED]>
Subject: Re: [EVDL] battery tab welding
To: ev@lists.sjsu.edu
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=us-ascii


I think he meant 20V - not 200V.  Most car cap are rated at 20 to 24V.   
Also, car audio capacitor are notorious for hyping the capacitance of the
unit.  Bill is right about using the MFG recommended welding process when
one is building a large EV pack.  The other thing to note about home built
CD welder is that the weldor can not apply pressure to the weld tab as
consistently as the machine.   Unless you are willing to develop a pneumatic
electrode actuator with a pressure regulator to adjust the pinch pressure, I
don't think it is wise to build an EV pack with manual electrodes.

Experiment wisely!

Minh




Jeff Shanab wrote:
> 
> 200V 300A .2 seconds is 12,000 watt seconds. ( I think
> Amps*Volts*time=watt seconds)
> 
> 4000A @ 12V .008 is 384 watt seconds
> 
> I wonder If both of these were getting max amps(and volts) to the weld
> then is it true that the cell is seeing 31 times more energy?
> 
> I know the heads arn't rated for even 384 watt seconds. (250 for miyachi
> 88A)
> 
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
> 
> 

-- 
View this message in context: 
http://www.nabble.com/battery-tab-welding-tp15258522p15328773.html
Sent from the Electric Vehicle Discussion List mailing list archive at 
Nabble.com.



------------------------------

Message: 3
Date: Thu, 07 Feb 2008 00:25:18 -0800
From: Geopilot <[EMAIL PROTECTED]>
Subject: [EVDL] XS500 model is still projected to sell for $30, 000 to
        $35, 000 in the United States.". car is supposed to be in showrooms at
        the end of 2008, 
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

http://www.treehugger.com/files/2008/02/xs500_electric_car_miles_ev.php

*Update:* Good news! "Information regarding an increase in the projected 
price of the MILES XS500 which was listed on AutoblogGreen and 
Treehugger.com was the result of miscommunication between a writer and 
our EU distributor, MILES-Benelux BV. *Our 2009 XS500 model is still 
projected to sell for $30,000 to $35,000 in the United States*."

*Update:* "AllGreenVehicles, the MILES-Benelux BV distributor, currently 
distributes the low speed Miles Electric Vehicles models in the Benelux 
countries. When the XS500 is available for purchase, MILES-Benelux BV 
will be distributing the sedan in the Netherlands, Belgium and 
Luxembourg; but, the price for the XS500 has not yet been set for those 
markets. The MSRP for the XS500 is set by the manufacturer, Miles 
Electric Vehicles, and not by the distributors."

With a little luck, they'll sell a good number and that will make the 
prices go down. We hope so, because although not out of this world, the 
specifications of the car are attractive compared to many other electric 
vehicles.

miles-xs-500-ev-002.jpg

    * Rapid acceleration to top speed of 80+ mph (130+ kph)
    * 120+ miles driving range (200+ kilometers)
    * Battery life of approximately 100,000 miles.
    * Minimal maintenance required, very low operating costs
    * One charge costs about the price of one gallon of gasoline
    * Charged on any standard 220V wall socket
    * Advanced airbags
    * Safety-tested proprietary li-ion battery pack

We wish we had more detailed specs, but they don't seem available 
anywhere yet. The car is supposed to be in showrooms at the end of 2008, 
so we should hear about it before then.




------------------------------

Message: 4
Date: Thu, 07 Feb 2008 07:39:41 +0100
From: Dan Frederiksen <[EMAIL PROTECTED]>
Subject: Re: [EVDL] GMS battery?
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Rick Beebe wrote:
> Anyone ever looked at these?
> http://www.greenmotorsport.com/green_motorsport/products_and_services/3,1,388,17,716.html
>   

looks like a good battery and must be based on A123 cells. kudos on them 
putting the price online instead of dicking us around with a call. the 
killer is the price though. nasty business. more than twice that from 
dewalt packs which are already twice the price.



------------------------------

Message: 5
Date: Thu, 7 Feb 2008 00:47:29 -0800 (PST)
From: Steve Robertson <[EMAIL PROTECTED]>
Subject: [EVDL] Looking for Advanced DC 8" motor
To: ev@lists.sjsu.edu
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=iso-8859-1

About 3 months into my EV experience i got some questionable advice about how 
to drive an EV to get the best mileage and i ended up blowing my motor. So if 
anyone out there has an Advanced DC 8" motor that you will sell please let me 
know. 

I have a Geo Metro that has been converted and it was working great until i was 
advised that i could accelerate in any particular gear until the car would not 
go any faster and then shift. Well that turned out apparently to not be true 
for this type of motor. My Ev friend then told me he was referring to Shunt 
type motors. Oh well...now i would just like to get this little jewell goin 
again. Any help out there in locating an engine for a good price is much 
appreciated. Thanks Steve 


------------------------------

Message: 6
Date: Thu, 07 Feb 2008 05:10:51 -0500
From: "EVDL Administrator" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] back emf on a driven wheel ...
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=US-ASCII

Please avoid posting about overunity devices, magnetic motors, free energy 
and perpetual motion machines, and anything else that appears to violate the 
laws of classical physics. Sorry, those subjects aren't appropriate for the 
EVDL.

Try overunity.com instead. Electrifying Times also hosts some articles and 
discussions dealing with these subjects. 

Thanks.

David Roden - Akron, Ohio, USA
EVDL Administrator

= = = = = = = = = = = = = = = = = = = = = = = = = = = = =
EVDL Information: 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/ .
= = = = = = = = = = = = = = = = = = = = = = = = = = = = =




------------------------------

Message: 7
Date: Thu, 07 Feb 2008 05:10:51 -0500
From: "EVDL Administrator" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] Looking for Advanced DC 8" motor
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=US-ASCII

On 7 Feb 2008 at 0:47, Steve Robertson wrote:

> I have a Geo Metro that has been converted and it was working great until i
> was advised that i could accelerate in any particular gear until the car would
> not go any faster and then shift. Well that turned out apparently to not be
> true for this type of motor.

Perhaps others will disagree, but I found that to be true for a Prestolite 
96v motor operated on 96 volts.  It did not seem to overspeed when operated 
with a normal load.  It might be that operating over rated voltage would 
allow it to overspeed.  Other thoughts?  Comments?

David Roden - Akron, Ohio, USA
EVDL Administrator

= = = = = = = = = = = = = = = = = = = = = = = = = = = = =
EVDL Information: 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/ .
= = = = = = = = = = = = = = = = = = = = = = = = = = = = =




------------------------------

Message: 8
Date: Thu, 7 Feb 2008 10:48:49 -0000
From: "martin winlow" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] UK EV Van
To: "'Electric Vehicle Discussion List'" <ev@lists.sjsu.edu>
Message-ID:
        <!&[EMAIL PROTECTED]>
        
Content-Type: text/plain;       charset="us-ascii"

 Hi,

Just a thought, but where did you get 'Darby' from?  I ask, as it may
actually be 'Derby' but pronounced Darby in a similar way to Hertfordshire
(where I live incidentally) being pronounced 'Hartfordsire' and not
'Hurtfordshire'.  One of those rather daft idiosyncrasies of English, I'm
afraid.

If you could clean up the manufacturers plates in either DSCF0016.JPG or
DSCF0017.JPG enough to make out the manufacturer and the serial number the
manufacturer may be able to tell you who they supplied the part to and what
for.

>From the looks of the electronics it looks like a 60's or 70's job to me
with possibly some alteration somewhat later.

I've been in the Metropolitan Police (London) for 20 years and never seen or
heard of anything like it. Most of the (40+) UK police forces (we have to
call them 'services' nowadays) have museums so it might be worth firing off
a group email to them.

If it is ex-police, my guess would be that it was used by a force like the
Ministry of Defence (MOD) police on one of their huge bases for trundling
around delivering stuff from A to B.

I don't know much about milk floats (small electric vans with a basic cab
and open sided load area designed to deliver milk etc door-to-door) but it
may be that the chassis and running gear of your mystery van is off one of
these with a GRP body stuck on it.  I believe there are groups out there
that deal with these things.  

They are still very common in London - many are getting on for 40 or more
years old.  It's ironic that these machines, some of which must have done
millions of miles (so far!), are considered to be the worst example of EV's
.  When you mention EV's to people in the UK they inevitably bring out the
milk-float comparison jokes.

Anyway,  good luck.

Regards, Martin Winlow.


-----Original Message-----

Subject: [EVDL] UK EV Van


I have found an interesting Van nearby. I was told it was a Police Van used
in the UK. Called a Darby. I found no information on the web. It looks to be
factory built and built hell for stout. It has an electric motor that is
about 13" + in diameter. The motor is HUGE. It is direct drive. Have a look
at the photo album. Please respond and does anyone have any ideas about this
set up. Ask questions and make comments and most of all should I buy it? I
am thinking of doing so but the thing looks like it would be hard to get
parts for. 

http://inertext.homeunix.com Photo Album 

Send in your ideas. Body is fiberglass. Has low slung side battery cases.
Has throttle pot wich is very large and loads of contactors. Loads of
cabling and then the motor which is direct to the rear end. It would make a
pretty cool EV for delivering produce in town. Not sure of the Voltage or
what kind of electric motor is in this thing.

Any Ideas or suggestions. It is funky but cool. 

Pete : )



------------------------------

Message: 9
Date: Thu, 7 Feb 2008 05:39:34 -0800 (PST)
From: wayne alexander <[EMAIL PROTECTED]>
Subject: [EVDL] RE : spark EV
To: ev@lists.sjsu.edu
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=iso-8859-1

I agree with david, some how I smell a rat. If they can get 100 miles on lead 
acid, I dont believe that at all, then there useing LiOn batts, and to get that 
range they would have to be selling the car for over 40,000$ or more. Even 
wonder why so many scams start with anything needed or wanted, but just really  
never see it, its just 3 inches out of reach  & hasnt been put in the publics 
hands yet????
    I have to be convinced, I have to kick the tires feel the fenders, if Its 
real, and for 20K$, I'll buy one, maybe 2 BUT, in my dealing with stuff, the 
only thing the ChiComs ever made worth a damn was the AK47, every thing else 
was trash.
   
   


------------------------------

Message: 10
Date: Thu, 07 Feb 2008 08:36:49 -0600
From: Lee Hart <[EMAIL PROTECTED]>
Subject: Re: [EVDL] GAUGES FOR MY EV?
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Jeff Shanab wrote:
> I am surprised the cross needle meter hasn't come up again, I think it
> is an elegant solution.
> http://www.qsl.net/k5lxp/ev/evgauge/evgauge.html

Yes, it is good. Two challenges; finding the special meter, and making 
the special scale to match your actual batteries.
-- 
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



------------------------------

Message: 11
Date: Thu, 7 Feb 2008 08:45:51 -0600
From: "Sarah & Erik" <[EMAIL PROTECTED]>
Subject: [EVDL]  Zivan Charging Interlocks
To: ev@lists.sjsu.edu
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1

I was always a little nervous about putting another point of failure
in the keyswitch circuit, and I don't have a fuel door either on my VW
Cabriolet. The idea I came up with is a 95 dB buzzer which is fed +12V
through a NO AC relay. The AC relay is connected the charger input,
and the 12VDC comes from a line switched on by the key. If AC and the
keyswitch are on, the buzzer buzzes with all it's might.

It doesn't protect me from a blown breaker, but I haven't had trouble
with this in the last year and a half, and it doesn't stop me from
driving off, but it makes a REALLY annoying noise if I try. I've
chased down a few bad parts in my keyswitch circuit when I was getting
my car running, I'm happy with fewer points of failure.

Erik

On Feb 6, 2008 11:27 PM,  <[EMAIL PROTECTED]> wrote:
> Message: 12
> Date: Thu, 07 Feb 2008 11:24:30 +1300
> From: Justin Southam <[EMAIL PROTECTED]>
> Subject: [EVDL] Zivan Charging Interlocks
> To: ev@lists.sjsu.edu
> Message-ID: <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi All, i've read a couple of threads lately (could be upto a couple of
> months old, i'm still catching up :-)) regarding using inbuilt contacts on
> Zivan chargers to disable the controller while charging as part of
> improving EV safety.  I just wanted to make the point that IF the Zivan
> contacts are only enabled while charging is in progress then you are still
> at risk of driving off with the charging cord attached once charging is
> complete or the charger is switched off for any reason, the CB/GFI tripped,
> unplugged by spouse wanting to dry clothes :-), power cut, etc. I think aux
> contacts on the charge cord connector or switch on inlet cover or plugging
> inlet into "enable" port on car are much safer. The cable must then be
> physically moved  to re-enable the controller.
>
> Regards,
> Justin.
>



------------------------------

Message: 12
Date: Thu, 7 Feb 2008 10:09:03 -0500
From: Stuart Friedrich and Wendy Lyn <[EMAIL PROTECTED]>
Subject: Re: [EVDL] Spark-EV's Zotye - Forum up
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"


I'd agree with David - no point cluttering up EVDL when you use the forum that 
they have created for themselves.  
 
http://www.spark-ev.com/index.php
 
 
Head over there and bang away!
 
 
> From: [EMAIL PROTECTED]> To: ev@lists.sjsu.edu> Date: Wed, 6 Feb 2008 
> 16:25:37 -0500> Subject: Re: [EVDL] Spark-EV's Zotye> > On 6 Feb 2008 at 
> 14:15, Steven ** wrote:> > > what's with that video? > > why was it always 
> moving so slow?> > We want to hear> > that lack of engine noise!> > Don't 
> bother asking or commenting. It's a waste of time. The company's > principal 
> has made it clear that he doesn't care one whit what we think. He > believes 
> his market lies elsewhere and he dismisses us all (meaning EVDL > members) as 
> wackos, treehuggers, nutcases, etc. > > Kind of a funny way of marketing - 
> insulting and disparaging the people most > likely to buy your product. Oh 
> well; his loss, not ours.> > Actually, I'd rather not discuss Spark-EV on the 
> EVDL. Why give such a > narrow-minded individual any more publicity? I'd much 
> rather we'd talk > about the Sunrise II project and Jerry's Freedom EV, which 
> are headed by > real EV people.> > David Roden> EVDL Administrator> 
> http://www.ev!
 dl.org/> > > _______________________________________________> For subscription 
options, see> http://lists.sjsu.edu/mailman/listinfo/ev
_________________________________________________________________



------------------------------

Message: 13
Date: Thu, 7 Feb 2008 10:18:53 -0500
From: "Bob Rice" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] RE : spark EV
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
        reply-type=original


----- Original Message ----- 
From: "wayne alexander" <[EMAIL PROTECTED]>
To: <ev@lists.sjsu.edu>
Sent: Thursday, February 07, 2008 8:39 AM
Subject: [EVDL] RE : spark EV


>I agree with david, some how I smell a rat. If they can get 100 miles on 
>lead acid, I dont believe that at all, then there useing LiOn batts, and to 
>get that range they would have to be selling the car for over 40,000$ or 
>more. Even wonder why so many scams start with anything needed or wanted, 
>but just really  never see it, its just 3 inches out of reach  & hasnt been 
>put in the publics hands yet????
>    I have to be convinced, I have to kick the tires feel the fenders, if 
> Its real, and for 20K$, I'll buy one, maybe 2 BUT, in my dealing with 
> stuff, the only thing the ChiComs ever made worth a damn was the AK47, 
> every thing else was trash.
>
>    Hi EVerybody;

       Sad to say, he's right! How we as a World, come up with high quality 
killing machines.Sigh! Look at the carnage a AK-47 can do in a shopping 
Maul!A fighter plane, nuke sub,  in passenger service. Strip out all the 
missles, put in cabins for a 3 day transatlantic service, who needs 
balconies, anyhow? Fish work pretty good underwater! Boats?  Something to 
replace too expensive planes! With jet gas going higher. Seeme it takes 
wars, or shortages, to improve technology? Thats why Drag racing is so good? 
More fun than wars, and improves tech? Get EVerybody involved; The Prong 
Yang NEDRA EVent! See what North Korea runs against the SOUTH  Korea cars? A 
Fun Russian USA "Grudge" match? The latest Ilyusian 14 wheeler dragster<G>!? 
The Summer Siberian Run? The Great Wall run? Fun for the WORLD!

    Seeya

    Bob
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>
>
> -- 
> Internal Virus Database is out-of-date.
> Checked by AVG Free Edition.
> Version: 7.5.488 / Virus Database: 269.13.28/1023 - Release Date: 
> 9/22/2007 1:27 PM
>
> 



------------------------------

Message: 14
Date: Thu, 7 Feb 2008 08:20:29 -0800 (PST)
From: Jeff Major <[EMAIL PROTECTED]>
Subject: Re: [EVDL] UK EV Van
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=iso-8859-1


--- [EMAIL PROTECTED] wrote:

> Well here is a working link if your getting this via
> email
> 
> http://inertext.homeunix.com/ukev
> 

The pictures of the two contactors look very much like
the ones in my old E-Jeep.  Originally supplied by
Cableform LTD, circa 1975.  Other electric hardware
also resembles the Cableform.

Regards,

Jeff M


      
____________________________________________________________________________________
Never miss a thing.  Make Yahoo your home page. 
http://www.yahoo.com/r/hs



------------------------------

Message: 15
Date: Thu, 7 Feb 2008 09:51:01 -0700
From: "Roland Wiench" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] GAUGES FOR MY EV?
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain;       charset="iso-8859-1"

Here is the battery amp and volt meter as display at:

http://to-ev.net/pics/020.html

The meters indicates this display when the EV ignition is turn off.

When the ignition switch is turn on, the amp meter will read 0 amps and volt 
meter will read about 200 volts.

As load is increase, the ampere will rise to about 180 amps while the 
voltage drops to 170 volts at about 60 mph.

If I hold this speed of 60 mph up a very steep hill, the ampere could go to 
600 amps, while the voltage drops to 150 volts.

Now if I continue to drive until the vehicle can not go any more, the 
voltage will display 150 volts at 0 amps which is the same indications as if 
I had the ignition switch off.

The above indications are with a set of 300 AH cells.  Now switching to 200 
AH cells, the battery amps now become 260 amperes at 150 volts at 60 mph 
(not hill climbing).

It becomes worst with 100 AH cells.

So how do I know what the ampere would be of a battery pack if I look at a 
150 volt indication.  Is it 0 amps, 250 amps or 600 amps?

It has to be determine by how many miles you travel and/or how long ago you 
charge the batteries.  After awhile you can determine this by the history of 
your driving with a volt meter.

I have only use these two meters for about 25 years, which have cause me to 
over ampere my motor many times. The field coils which are space on 
insulated square rods had to be re-enamel.

Roland






----- Original Message ----- 
From: "Lee Hart" <[EMAIL PROTECTED]>
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Sent: Thursday, February 07, 2008 7:36 AM
Subject: Re: [EVDL] GAUGES FOR MY EV?


> Jeff Shanab wrote:
> > I am surprised the cross needle meter hasn't come up again, I think it
> > is an elegant solution.
> > http://www.qsl.net/k5lxp/ev/evgauge/evgauge.html
>
> Yes, it is good. Two challenges; finding the special meter, and making
> the special scale to match your actual batteries.
> -- 
> 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
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
> 



------------------------------

Message: 16
Date: Thu, 7 Feb 2008 10:09:32 -0800 (PST)
From: Jeff Major <[EMAIL PROTECTED]>
Subject: Re: [EVDL] Max motor voltage? (Jim Husted)
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=iso-8859-1


Hi Morgan,

Are you looking to do a drag bike with a 10 second
duty cycle or a commuter type vehicle?  For short
bursts, you can abuse the motor with high amps and
volts, but suffer in durability.  For a daily user,
you need to keep the motor within reasonable limits.

Looking at the curve, you see that the 96 volt RPM is
nearly 5000 at the rated load.  So going to 120 or 144
volt system and keeping motor amps within reason will
yield little if any range for full voltage to the
motor.  In other words, you will nearly always be
reducing the battery volts with PWM to keep the motor
amps low enough or keep the motor from overspeeding. 
So, why use the higher voltage battery?

I see Jim H has given his usual good advice.

Advance brush timing (within reason) does not lower
efficiency.  It does have the effect of field
weakening, so reduces torque per amp and increases
RPM.

You might consider putting one of those temp sensors
on a brush holder.  Depending on your duty cycle, the
brush may be the hot spot.

30 volts per bar sounds high.

Regards,

Jeff M


--- Morgan LaMoore <[EMAIL PROTECTED]> wrote:

> Hi,
> 
> I've got a motor that's rated at 48-96V. I'd love to
> use a 120-144V
> system for better performance, but I don't know how
> the motor will
> handle it.



      
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------------------------------

Message: 17
Date: Thu, 07 Feb 2008 19:52:58 +0100
From: Dan Frederiksen <[EMAIL PROTECTED]>
Subject: [EVDL] Spark EV pictures
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

I asked the obvious question on the forum and got an answer
http://spark-ev.com/index.php?topic=23.0

anyone recognize the motor and controller?



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