EV Digest 4578

Topics covered in this issue include:

  1) Re: Silver Bullet Electric Z Car 1/4 Mile Run Results
        by "Jack Knopf" <[EMAIL PROTECTED]>
  2) Re: Silver Bullet Electric Z Car 1/4 Mile Run Results
        by "Roderick Wilde" <[EMAIL PROTECTED]>
  3) li ion  bats 
        by "STEVE CLUNN" <[EMAIL PROTECTED]>
  4) Re: reva
        by Evan Tuer <[EMAIL PROTECTED]>
  5) Re: li ion  bats 
        by "John G. Lussmyer" <[EMAIL PROTECTED]>
  6) Re: Autocross racing 3wheels, Re: 3 wheel EV's trike pick up, and CUSHMAN 
Truck
        by Evan Tuer <[EMAIL PROTECTED]>
  7) Re: li ion  bats
        by Victor Tikhonov <[EMAIL PROTECTED]>
  8) Re: Is the stock fan enough?
        by Ryan Stotts <[EMAIL PROTECTED]>
  9) Re: ET WebExclusive :: Clooney's Tango!
        by Ryan Stotts <[EMAIL PROTECTED]>
 10) Re: Autocross racing 3wheels, Re: 3 wheel EV's trike pick up, and CUSHMAN 
Truck
        by jerry dycus <[EMAIL PROTECTED]>
 11) RE: Conversion Details
        by "Patrick Plummer" <[EMAIL PROTECTED]>
 12) Air drag and how it happens,    Re: Is the stock fan enough?
        by jerry dycus <[EMAIL PROTECTED]>
 13) Re: Silver Bullet Electric Z Car 1/4 Mile Run Results
        by Ryan Stotts <[EMAIL PROTECTED]>
 14) RE: Conversion Details
        by "Patrick Plummer" <[EMAIL PROTECTED]>
 15) Re: Is the stock fan enough?
        by "Christopher Robison" <[EMAIL PROTECTED]>
 16) MPG vs. NGM
        by "Lawrence Rhodes" <[EMAIL PROTECTED]>
 17) Re: Connecting the Heinemann to an EV.
        by "Lawrence Rhodes" <[EMAIL PROTECTED]>
 18) Re: Powering refrigerator off of HV traction pack
        by William Brinsmead <[EMAIL PROTECTED]>
 19) Re: Auto-determination of AC current available
        by Evan Tuer <[EMAIL PROTECTED]>
 20) Re: MPG vs. NGM
        by Nick Austin <[EMAIL PROTECTED]>
 21) Cost of electricity
        by Danny Miller <[EMAIL PROTECTED]>
 22) PFC-30
        by "Sharon Hoopes" <[EMAIL PROTECTED]>
 23) Re: 200VDC to 120VAC Inverter
        by Lee Hart <[EMAIL PROTECTED]>
 24) Re: 200VDC to 120VAC Inverter
        by Danny Miller <[EMAIL PROTECTED]>
 25) 914 FOR SALE
        by "Sharon Hoopes" <[EMAIL PROTECTED]>
 26) Re: Motor dynometer
        by Rod Hower <[EMAIL PROTECTED]>
 27) PORSCHE FOR SALE
        by "Sharon Hoopes" <[EMAIL PROTECTED]>
 28) Shameless Plug: Citizens for Rideable Communities
        by "Roderick Wilde" <[EMAIL PROTECTED]>
--- Begin Message --- How many amps per square inch can standard carbon brushes handle for 12 seconds? ----- Original Message ----- From: "Rich Rudman" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Sent: Monday, August 15, 2005 11:09 AM
Subject: Re: Silver Bullet Electric Z Car 1/4 Mile Run Results


Yer fine.
The limit is arcing, you can go a LOT higher in volts if you don't try to
stuff 1000 amps into the motor.

170 volts is a limit if you are dumping all the battery power you can find
into the motor.
You will find that 180 is more like 90 at 1000 amps.

So Even us racers have a hard time getting 170 volts to the motor at full
amps.

In fact a 360v pack will barley do it. It's the high rpm and high volts that
the end of the track dishes out that can really arc the motors.

Or just too many amps for the motor.
Ask Rod about this....He knows how to break stuff better than I do.

Basicly adding in the voltage limit on a Zilla, lets you hammer the amps and
not worry much about arcing.

Madman

----- Original Message ----- From: "Rush" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Sent: Saturday, August 13, 2005 8:28 PM
Subject: Re: Silver Bullet Electric Z Car 1/4 Mile Run Results



From: "Ryan Stotts" <[EMAIL PROTECTED]>

> Is 170 volts the absolute limit at all rpms?  How does Netgain get 192
> from theirs?

Is that true? For a 9" ADC motor the limit is 170 vdc that you can put
into it? What happens after that? I plan to do a 180 vdc pack...

Rush



--- End Message ---
--- Begin Message --- Rich, in the world of automotive gear ratios the higher the number the lower the ratio. I think you meant to say a higher ratio rear end.

Roderick Wilde
"Suck Amps EV Racing"
www.suckamps.com


----- Original Message ----- From: "Rich Rudman" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>Roderick Wilde
Sent: Monday, August 15, 2005 8:50 AM
Subject: Re: Silver Bullet Electric Z Car 1/4 Mile Run Results


Line at a time Ryan.

Ft says 4.11: 1 Nice for Gas... not low enough for this motor combo......at
the moment.

Slicks???  this is a street legal Car, Gotta be Dot spec. But yea some 17
inch rims and a pair of Nitto 555D... would do this car very well.
Oh yea Plasma Boy.... did you spend any time in the burn out box????
   Real racers have to warm up the rubber. Those Dot  drag tires of mine
need some time warming up. If you have wheel spin.... make more smoke first!
170 volts is the ARc limit of a AvDC motor with no brush mods and stock
timing and stock brush compounds. Ot did this way back, and I am finding
this holds on the Dyno also.
How does Netgain get to 192??? They don't. They have the exact same brushes
and comms AvDC does. So....Your results may vary, but they have no magic.
Add copy is a easy design goal. I know they have Arc issue on thier Rail
dragster, as we all do ...Except for Dennis....

The voltage regulation that the Zillas have does this by simply limitiing
the voltage the motor sees, but lets the amp through if the motor can take
it.
Some really high level military gear had sniffer brushes, but these are not
usefull in our applications.

Untill somebody gives me a real loss gain number, We won't be messing with
drilling holes in hundreds of dollars of pulleys. If there is No gains
We want the strength.

I don't mind the sound, and neither does the rest of the team.

Madman



----- Original Message ----- From: "Ryan Stotts" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Sent: Saturday, August 13, 2005 5:13 PM
Subject: Re: Silver Bullet Electric Z Car 1/4 Mile Run Results


Rich Rudman wrote:

> It needs a better rear end ratio... or really tall sticky tires,

What gear ratio does it have now?  Slicks are about ~$300 for the pair.


> The motors are falling asleep above 4000 rpm, This is the curse of > Stock
EV
> motors. If you add enough volts to get them to pull, you add enough
volts to
> ge them to arc and spark... and eat themselves for dinner. Sigh... > What
> next.

Is 170 volts the absolute limit at all rpms?  How does Netgain get 192
from theirs?

Is there some way to build some form of "arc detection" into a
controller?  For example, have a lead wire in the motor and if the
motor arcs to it, have the controller trim the voltage down so it
stops the arc?

> I wonder what kind of gains drilling air holes in the pulley valleies
would
> do???

I'd do it for the reduced noise alone.  1/16" bit or smaller?  How
many holes per valley?  How easy are the pulleys to remove?

Use a drill press and one of these and it will go real fast:

http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=47993





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--- End Message ---
--- Begin Message --- I don't see TS batteries on Victor's site , . I'm thinking about them for my lawn mower project , . right now its using 30 ah at 72v to cut one yard running like the gas motor did , uses 100 to 150 amps . if I run it slow I can do a yard with 15 ah . got 6 orbitals on it now . Steve clunn
--- End Message ---
--- Begin Message ---
Hi again,
  Someone nearby has asked me about these.. can you tell me roughly
what price you paid, and what going green are like to deal with?   Any
idea who to contact to ask for second hand ones?

Ta
Evan

On 6/16/05, reb <[EMAIL PROTECTED]> wrote:
> second hand from going green who are trying to sell
> them in london for going to work
> as far as i know this one is the first one i've seen
> for sale second hand
> it has been used for 2 yrs in london and has done
> around 7000 miles
> the batteries are exide CMP 6v 200ah which are
> probably nearing the end of their life so they need
> replacement with something better
> i thought the thundersky 1000 ah cells would be a good
> bet but the cost is a bit heavy
> the system is only about 50v though
> it would be nice if the thing had a 80 mile range
> i'm thinking this is about as far as you would want to
> drive at 40mph
> has any one any experience with souping these things
> up ?
> as in higher voltage etc ?
> having had a look at it last week it looks pretty
> basic electrically apart from the computer controlling
> the heater blankets watering system cooling fans etc
> any one who wants to see some pictures let me know
> reb
> 
> 
> 
> 
> --- Evan Tuer <[EMAIL PROTECTED]> wrote:
> 
> > Ah, very nice.  Is it new or second hand?   Nice
> > alternative to a bike
> > in the winter I suppose.
> > Let us know how you get on!
> >
> > Regards
> > Evan
> >
> > On 6/15/05, reb <[EMAIL PROTECTED]>
> > wrote:
> > > it's one of these reva things made in bangalore
> > > it's a direct drive to the back axle with  sepex
> > > gubbins
> > > performance is about 40mph with a range of around
> > 30
> > > miles (they say 40 but you would be measuring
> > > performance with a calender)
> > > having had a look at the batteries it needs a big
> > pack
> > > of thunderskys to give it some range and a voltage
> > > hike to pep up the performance
> > > has a nice computer on board with watering system
> > > battery heaters , fans, regen, aircon and central
> > > locking  cd player etc
> > > in theory it will cary 4 people but i think hills
> > > would be a drag
> > > i'ts suposed to be delivered friday so we shall
> > see
> > > ...
> > > if it can cope with the roads in india it should
> > be ok
> > > for popping around abergavenny in
> > > reb
> > >
> > >
> > >
> > > --- Evan Tuer <[EMAIL PROTECTED]> wrote:
> > >
> > > > On 6/14/05, reb <[EMAIL PROTECTED]>
> > > > wrote:
> > > >
> > > > > oh and i've just bought an electric car
> > > >
> > > > So let's hear about it, what did you get?
> > > >
> > > > Regards
> > > > Evan
> > > >
> > > >
> > >
> > >
> > >
> > >
> > >
> >
> ___________________________________________________________
> > > How much free photo storage do you get? Store your
> > holiday
> > > snaps for FREE with Yahoo! Photos
> > http://uk.photos.yahoo.com
> > >
> > >
> >
> >
> > --
> >
> > EVan
> > http://www.tuer.co.uk/evs2
> >
> >
> 
> 
> 
> 
> 
> 
> ___________________________________________________________
> Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with 
> voicemail http://uk.messenger.yahoo.com
> 
>

--- End Message ---
--- Begin Message ---
At 05:18 AM 8/15/2005, STEVE CLUNN wrote:
I don't see TS batteries on Victor's site , . I'm thinking about them for my lawn mower project , . right now its using 30 ah at 72v to cut one yard running like the gas motor did , uses 100 to 150 amps . if I run it slow I can do a yard with 15 ah . got 6 orbitals on it now .

To get 100-150A out of TS cells, you would probably need to use at LEAST a 200AH cell.

--
John G. Lussmyer      mailto:[EMAIL PROTECTED]
Dragons soar and Tigers prowl while I dream....         
http://www.CasaDelGato.com

--- End Message ---
--- Begin Message ---
On 8/2/05, jerry dycus <[EMAIL PROTECTED]> wrote:
> 
>      Doesn't the Morgan 3wheeler run autocross? Any
> way to check that?

I don't know what Autocross is, but my uncle races them (quite successfully!),
see the picture on this page: http://www.mtwc.co.uk/competition.shtml

Regards
Evan

-- 

EVan
http://www.tuer.co.uk/evs2

--- End Message ---
--- Begin Message ---
I decided not to offer loose cells until a suitable BMS will
accompany them. Else it is only disappointment to a users.

Unlike Lead, unless you use a single cell for your project,
by bying a few cells you are not buying ready to use battery -
it is only chemical energy storage which WILL fail without supervision.

STEVE CLUNN wrote:
I don't see TS batteries on Victor's site , . I'm thinking about them for my lawn mower project , . right now its using 30 ah at 72v to cut one yard running like the gas motor did , uses 100 to 150 amps . if I run it slow I can do a yard with 15 ah . got 6 orbitals on it now .
Steve clunn

--
Victor
'91 ACRX - something different

--- End Message ---
--- Begin Message ---
Joe Smalley wrote:

> You need to provide more description about the application to get a valuable
> answer.

For this example, let's say 3,000lb car, 13" WarP motor, Zilla2K, 336v
pack.  Around town driving consists of hills.  Full throttle on the
highway on ramp.  The highway is mostly up and down hill.. Planned
time spent on a dyno and also at the local drag strip.

With the front sealed off, is the motor going to be prone to over
heating in these conditions?  How about in the hot 100 degree summer? 
The alternative is to leave the stock front on with it's gaping
openings.

The only reason I considered the sealed front was for possible
aerodynamic gains on the highway and upper end of the drag strip.

The only fuel cars that see 1/4 mile benefits from that sealed off
front are cars running 8 seconds or quicker in the 1/4.

Are the efficiency improvements from that alternative front end only
negligible for highway use?

--- End Message ---
--- Begin Message ---
Aaron wrote:

> Also... did they install heat?  Air Conditioning?

It's got heat and AC:

http://commutercars.com/specifications.html

--- End Message ---
--- Begin Message ---
               Hi Evan and All,

Evan Tuer <[EMAIL PROTECTED]> wrote:
On 8/2/05, jerry dycus wrote:
> 
> Doesn't the Morgan 3wheeler run autocross? Any
> way to check that?

I don't know what Autocross is, but my uncle races them (quite successfully!),
see the picture on this page: http://www.mtwc.co.uk/competition.shtml


     Some cool pics, story!!  Morgan 3wheeler's  racing wins over 60+ yrs  got 
me to think that the stories of 3wh cars not handling well were not nessasarily 
true and as experience has shown, I was right!!

    Then with using it as an EV allowing the batts to perfectly place the CG 
correctly and lower than other cars really makes 3wh EV's the way to go.

   Autocross is racing a course around cones in a parking lot, ect and timing 
how fast you make the thru the set course. The one going fastest thru, wins.

                                  Thanks,

                                        Jerryv Dycus

     

 

 


Regards
Evan

-- 

EVan
http://www.tuer.co.uk/evs2




                
---------------------------------
 Start your day with Yahoo! - make it your home page 

--- End Message ---
--- Begin Message ---
Thanks for the info, this will be very helpful to me.  Keep me (and the list) 
aprised of your progress!
 
Thanks again,
 
Patrick
 
________________________________

From: [EMAIL PROTECTED] on behalf of Jeff Shanab
Sent: Fri 8/12/2005 10:42 AM
To: Electric Vehicle Discussion List
Subject: RE: Conversion Details



I found this chart http://www.geocities.com/~z-car/specs/ which shows
the 87 I have to weigh about 200 less than the 95 body style, Glass is
heavy and these cars are really built tough.  The motor was lighter in
the 95, they made a big tadoo about that so I think the weight is in the
body. The 240sx would probably be a better choice. I live in Fresno and
it would take a complete charge just to get to a hill.
I haven't weighed the motor yet but
http://www.datsuns.com/510/510_weight_discussion.htm   says 355 to 392
LBS so 392-165 = 227 lbs lost up front = 5 to 6 orbitals I weighed the
tranny and it is 100 lbs with lub. gasoline at 8lbsa/gal * 20 is 160
behind rear axle so 4 orbitals there that is my first 10.  I am gonna
play with this more this weekend.



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------_=_NextPart_001_01C5A1C5.105A9120"
Subject: RE: Conversion Details
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From: "Patrick Plummer--
Message-ID: <[EMAIL PROTECTED]>
Date: Mon, 15 Aug 2005 11:30:04 -0700 (PDT)
From: jerry dycus <[EMAIL PROTECTED]>
Subject: Air drag and how it happens,    Re: Is the stock fan enough?
To: ev@listproc.sjsu.edu
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          Hi Ryan and All,

Ryan Stotts <[EMAIL PROTECTED]> wrote:

Joe Smalley wrote:

> You need to provide more description about the application to get a valuable
> answer.

For this example, let's say 3,000lb car, 13" WarP motor, Zilla2K, 336v
pack. Around town driving consists of hills. Full throttle on the
highway on ramp. The highway is mostly up and down hill.. Planned
time spent on a dyno and also at the local drag strip.

With the front sealed off, is the motor going to be prone to over
heating in these conditions? How about in the hot 100 degree summer? 
The alternative is to leave the stock front on with it's gaping
openings.

The only reason I considered the sealed front was for possible
aerodynamic gains on the highway and upper end of the drag strip.
 

         Why sealing the front is important aero wise is when the air goes in, 
it slows down compared to the EV thus causing drag by speeding it up compared 
to the outside world. 

          Plus as it doesn't completely slow down but instead forces the air 
under the hood to squirt out the bottom, side causing more aero drag as it then 
widens the apparent frontal area causing even more air outside to speed up 
which is what aero drag is, moving any air any distance from where it was 
before, transfering energy to it from the battery pack.

         So by blocking the front, you stop all this from happening in the 
first place, thus much less aero drag. While that sounds counter intuitive, 
it's not. What happens is a little air stopped in front of the car now forms a 
aero air bubble pressure wave that fairs the front quite well and why front 
bodies are the least you need to worry about when it comes to air drag.

        It is also why wheel wells and open windows cause so much drag as the 
airsteam gets in them then needs to get out as there already is air in there so 
usually comes out sideways to the car creating turbluance, thus drag.

        If one can keep air from coming out sideways and at the middle, widest 
part and can bring it back gently in again by gently curving the top, sides 
inward so somewhere behind the EV, it comes back together thus giving a very 
low drag as that moves the least air the least distance.

                                                HTH's,

                                                      Jerry Dycus


The only fuel cars that see 1/4 mile benefits from that sealed off
front are cars running 8 seconds or quicker in the 1/4.

Are the efficiency improvements from that alternative front end only
negligible for highway use?



                
---------------------------------
 Start your day with Yahoo! - make it your home page 
Message-ID: <[EMAIL PROTECTED]>
Date: Mon, 15 Aug 2005 13:34:31 -0500
From: Ryan Stotts <[EMAIL PROTECTED]>
To: ev@listproc.sjsu.edu
Subject: Re: Silver Bullet Electric Z Car 1/4 Mile Run Results
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Rich Rudman wrote:

> Slicks???  this is a street legal Car, Gotta be Dot spec. 

You can get some DOT slicks...  they have little grooves cut in them
for "tread".

I hear these are the best:

http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=2239&prmenbr=361 

These are some serious tires too:

http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=202489&prmenbr=361

http://www.mickeythompsontires.com/strip_et_street.html 

http://www.mickeythompsontires.com/strip_et_street_radial.html 


> Except for Dennis....

What's the secret Dennis?


>11" GE and dump $10K worth of motor mods into it.

I can picture the motor...  but I can't imagine any mods to it.  What
are some just for starters?  What are some that start to add up to the
$10K range?


Also, why a 11" GE instead of a 13" WarP?


If I ever get any money saved up, am I going to be disappointed with
the performance of my 13" motor?

If so, is the answer and solution going to be AC?

I'm looking for more performance then this:

http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=6188 

I could run 9's in the 1/4 with that engine.. (I would hope!)
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That's one thing I was looking at in particular:  fairly light weight =
but with enough room to hold the number of batteries I have in mind.  =
You can do a miata conversion (2300 lbs), but there's no space!
=20
Rear wheel drive is also very important to me...from what I hear from =
the list, with all the torque series wound DC motors have, the problem =
is getting it to the pavement.
=20
Plus I like Nissan's.  My daily driver now is an 02 Maxima and it's very =
fun to drive.
=20
--Patrick

=20
________________________________

From: [EMAIL PROTECTED] on behalf of Tim Clevenger
Sent: Sun 8/14/2005 11:08 PM
To: ev@listproc.sjsu.edu
Subject: RE: Conversion Details



As a former 240sx owner, I think it would make a great conversion.  It's
reasonably light, has a huge amount of space under the hood, and is rear
wheel drive.  The 5-speed is also pretty strong if you want to put some
power under the hood.

Tim

On Aug 12, 2005, at 2:07 PM, Electric Vehicle Discussion List wrote:

> From: "Patrick Plummer" <[EMAIL PROTECTED]>
> Date: August 12, 2005 12:50:04 PM PDT
> To: <ev@listproc.sjsu.edu>
> Subject: RE: Conversion Details
>
>
> I'm afraid I can't answer your question, but I'm extremely=20
> interested in your project.  I was thinking about doing a 300zx or=20
> maybe a 240sx.  How much weight were you able to pull out of your=20
> Z?   I had found that a '95 has a curb weight of around 3200 - 3300=20
> (300Z) and the 240sx is about 2650.  But the 300z had a 6 cyl ICE=20
> while the 240 is a 4.
>
> I want to pack it full of orbitals or optimas (25 would be great)=20
> and I'm concerned about the total weight and what that'll do to=20
> acceleration.
>
> Thanks for any insight you can give me!
>
> --Patrick




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Subject: RE: Conversion Details
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Date: Mon, 15 Aug 2005 14:20:07 -0500 (CDT)
Subject: Re: Is the stock fan enough?
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The verdict I've heard before is that a smooth, sealed front end helps
noticeably on the highway. Some before/after numbers would be cool though;
I'm thinking about smoothing the front of my Hombre and putting in an
underbody pan and would like to know if it's really worth the effort.

Beyond that, if you're planning on racing a Warp13, I think the best
option is to order the motor without the fan.  It doesn't adequately cool
when you need it, and it's an unnecessary drag when you don't. I'll be
forcing air through mine with an external blower and custom shrouds. 
Eventually, I plan to thermally control the blower(s) so I don't sound
like a hurricane at a stoplight.  If you assume you're going to be using
blowers anyway, then you can make the car smooth everywhere, and put
intakes wherever you like.

  --chris



Ryan Stotts said:
> Joe Smalley wrote:
>
>> You need to provide more description about the application to get a
>> valuable
>> answer.
>
> For this example, let's say 3,000lb car, 13" WarP motor, Zilla2K, 336v
> pack.  Around town driving consists of hills.  Full throttle on the
> highway on ramp.  The highway is mostly up and down hill.. Planned
> time spent on a dyno and also at the local drag strip.
>
> With the front sealed off, is the motor going to be prone to over
> heating in these conditions?  How about in the hot 100 degree summer?
> The alternative is to leave the stock front on with it's gaping
> openings.
>
> The only reason I considered the sealed front was for possible
> aerodynamic gains on the highway and upper end of the drag strip.
>
> The only fuel cars that see 1/4 mile benefits from that sealed off
> front are cars running 8 seconds or quicker in the 1/4.
>
> Are the efficiency improvements from that alternative front end only
> negligible for highway use?
>
>
Message-ID: <[EMAIL PROTECTED]>
From: "Lawrence Rhodes" <[EMAIL PROTECTED]>
To: "Zappylist" <[EMAIL PROTECTED]>,
        "Electric Vehicle Discussion List" <ev@listproc.sjsu.edu>,
        <[EMAIL PROTECTED]>,
        <[EMAIL PROTECTED]>, "SFEVA" <[EMAIL PROTECTED]>
Subject: MPG vs. NGM
Date: Mon, 15 Aug 2005 11:47:47 -0700
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Saying a plugin hybrid gets 250 miles per gallon is misleading.  Why not say 
no gas used for one month or one week or a year. Or maybe no gas used for 50 
miles at a time.  Maybe someone can come up with a better expression. MNG 
Miles No Gas.  NGM No Gas Miles.  Etc......When one says 250 mpg I think of 
a very small motor with no power....
Lawrence Rhodes
Bassoon/Contrabassoon
Reedmaker
Book 4/5 doubler
Electric Vehicle & Solar Power Advocate
415-821-3519
[EMAIL PROTECTED] 
Message-ID: <[EMAIL PROTECTED]>
From: "Lawrence Rhodes" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Subject: Re: Connecting the Heinemann to an EV.
Date: Mon, 15 Aug 2005 11:55:56 -0700
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Oh O now I am confused.  I was just going to drill two holes in the floor of 
my car, insulate the connections and bolt it down.  My problem is I want to 
somehow mount it in the hump of my car so I can reach it.  Maybe I got 
Vertical and Horizontal confused.  I Might be able to mount it in the hump 
almonst vertical.  LR.............
----- Original Message ----- 
From: "Bill Dennis" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Sent: Monday, August 15, 2005 7:38 AM
Subject: RE: Connecting the Heinemann to an EV.


> Hi, Lawrence.  My Heinemann (also 160VDC/250A continuous) says, "Install 
> in
> vertical position only".  This is so the exhaust screen is at the top, 
> which
> would make the switch more parallel to the ground than pointing toward the
> sky.  Is that what your instructions mean by "keep the switch horizontal"?
>
> Bill Dennis
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
> Behalf Of Lawrence Rhodes
> Sent: Saturday, August 13, 2005 10:03 AM
> To: Electric Vehicle Discussion List
> Subject: Connecting the Heinemann to an EV.
>
> Connecting the Heinemann(Heinemann 160 VDC, 250 amp continuous, 1000 amp
> peak) seems like an exercise in insulation.  It just has two bolts 
> pointing
> down.  The instructions say keep the switch horizontal.  I want to install
> it in the floor next to the stick shift.  I see that I can extend the 
> bolts
> a bit but can they take the torque needed to secure the switch.  I don't 
> see
>
> how else it could be done except by drilling two holes across the switch 
> and
>
> over the bolts and securing it to the center hump in which case it will
> follow the angle of the center hump.  A little rubber or plastic top hat
> without the top would be all that's needed if the bolts can take mounting
> torque.  Thanks for any info on installation.  Of course if this switch 
> goes
>
> through the floor it must be insulated very well.
> Lawrence Rhodes
> Bassoon/Contrabassoon
> Reedmaker
> Book 4/5 doubler
> Electric Vehicle & Solar Power Advocate
> 415-821-3519
> [EMAIL PROTECTED]
>
>
> 
Message-ID: <[EMAIL PROTECTED]>
Date: Mon, 15 Aug 2005 11:29:42 -0700
From: William Brinsmead <[EMAIL PROTECTED]>
MIME-Version: 1.0
To: Electric Vehicle Discussion List <ev@listproc.sjsu.edu>
Subject: Re: Powering refrigerator off of HV traction pack
Content-Type: text/plain; charset=us-ascii; format=flowed
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HI Folks, 
I have a possible solution for those wishing to use their EVs as large rolling 
UPS systems.
I have some EV busses that have a 360 vdc traction pack and they each have a 
7.5 and a 10 hp.
GE variable frequency motor drive set at 60 hz. although these models say 
3phase input they are obviously happy with straight dc coming in, all that is 
done is a precharge resistor is connected 5 seconds before the contactor closes 
to prevent a wicked inrush current.
The 3phase outputs drive AC, lights, cooling fans, air compressor and a 
hydraulic pump. Lots of 120 volt too using a step down xformer.
 The model I have is GE drive , AF300es and is a current product, these or a 
similar unit should be cheaply available as surplus.    Good Luck, Bill 
Brinsmead












Message-ID: <[EMAIL PROTECTED]>
Date: Mon, 15 Aug 2005 20:03:22 +0100
From: Evan Tuer <[EMAIL PROTECTED]>
To: ev@listproc.sjsu.edu
Subject: Re: Auto-determination of AC current available
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On 8/15/05, Lee Hart <[EMAIL PROTECTED]> wrote:

> > At some point I'll try reproducing the situation to see if it really
> > is that clever!
> 
> Probably not that clever, it's just a side effect of the design.
> 
> A plain old transformer-rectifier type charger automatically reduces its
> charging current as AC line voltage drops. If you plug one into an
> outlet with low AC voltage and/or a very long run of undersized wire, it
> automatically charges at a much lower current.
> 
> A charger that uses a constant-voltage transformer or a switching power
> supply will *increase* the AC current it draws as the AC line voltage
> drops. This happens as a consequence of the charger's regulating action.
> It is trying to maintain full output despite the reduced AC line
> voltage, and must draw more AC current to do so.
> 
> So my guess is that your charger is a plain old unregulated
> transformer-rectifier type charger, whose output naturally fell enough
> at the lower line voltage to avoid tripping the breaker.

I'd agree, only it's an isolated, power factor corrected, water cooled
switch-mode charger, integrated into the factory EV with Nicads.  And
I know for a fact that it stays drawing a rock steady 13A between 220
and 255VAC (it must allow the DC current to change instead), I just
don't know what happened that day!
Date: Mon, 15 Aug 2005 12:17:15 -0700
From: Nick Austin <[EMAIL PROTECTED]>
To: ev@listproc.sjsu.edu
Subject: Re: MPG vs. NGM
Message-ID: <[EMAIL PROTECTED]>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
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The plug in Prius is a little strange in that it can only go up to ~40 mph
before the engine needs to kick in, so if you are driving on the expressway, 
you are still using gas even if your battery is fully charged. 

The kicker is that the battery still provides assist to the engine thus 
giving you 250 mpg.

I agree that the wording is clumsy, but I'm not sure how to improve.

On Mon, Aug 15, 2005 at 11:47:47AM -0700, Lawrence Rhodes wrote:
> Saying a plugin hybrid gets 250 miles per gallon is misleading.  Why not 
> say no gas used for one month or one week or a year. Or maybe no gas used 
> for 50 miles at a time.  Maybe someone can come up with a better 
> expression. MNG Miles No Gas.  NGM No Gas Miles.  Etc......When one says 
> 250 mpg I think of a very small motor with no power....
> Lawrence Rhodes
> Bassoon/Contrabassoon
> Reedmaker
> Book 4/5 doubler
> Electric Vehicle & Solar Power Advocate
> 415-821-3519
> [EMAIL PROTECTED] 
Message-ID: <[EMAIL PROTECTED]>
Date: Mon, 15 Aug 2005 14:23:15 -0500
From: Danny Miller <[EMAIL PROTECTED]>
MIME-Version: 1.0
To: ev@listproc.sjsu.edu
Subject: Cost of electricity
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
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I haven't seen anybody discussing the economics of the EV power so I 
just thought I'd bring it up.
Now I don't have an EV but am trying to understand what kind of 
consumption they actually have, mainly just for my own information.

Just throwing out some numbers let's say a 144v pack where you will use 
80AH to go 20 mi for a midsize sedan.  Is this basically realistic at 
least for some vehicles?  1.736mi/KWH?

That same sedan might do 30 mpg, at $2.35/gal that means $0.0783 per mi.

Now looking at my electric bill, they do some funny math here.  One rate 
up to 500KWH, another above 500KWH, and another fuel charge for the 
total usage.  Assuming my house is going to use at least 500KWH, it 
would be necessary to account for the extra usage at the higher >500KWH 
rate.  That combined with "fuel charge" puts it at $0.106 per KWH, and 
combined with the earlier mileage WAG estimate, we get $0.061/mi to run 
on electricity?

Danny
Message-ID: <[EMAIL PROTECTED]>
From: "Sharon Hoopes" <[EMAIL PROTECTED]>
To: "ev" <ev@listproc.sjsu.edu>
Subject: PFC-30
Date: Mon, 15 Aug 2005 12:22:05 -0700
MIME-Version: 1.0
Content-type: text/plain; charset=US-ASCII

Bill hoopes < [EMAIL PROTECTED] >
WHERE CAN I BUY AN used PFC-30 CHARGER???

Bill & Sharon Hoopes
[EMAIL PROTECTED]

Message-ID: <[EMAIL PROTECTED]>
Date: Mon, 15 Aug 2005 14:42:40 -0700
From: Lee Hart <[EMAIL PROTECTED]>
MIME-Version: 1.0
To: ev@listproc.sjsu.edu
Subject: Re: 200VDC to 120VAC Inverter
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Lee Hart wrote:
>> Yes, that can work. You might not need a transformer, either.
>> The actual pulse width can be set to determine the AC voltage
>> generated.

Edward Ang wrote:
> Wouldn't this only give you the RMS of the voltage generated,
> but the actual peak voltage would be a lot different? This would
> be very bad if you connect something with an input cap rated at
> 200V (for 110Vac) because your Vdc (or peak) might be above 200V.

I'm talking about a simple inverter that just chops the DC into a square
wave, and uses phase control on the AC to limit the RMS voltage to what
the load needs. For this to work, everything depends on what you are
going to power with that inverter's AC.

Power supplies for electronic equipment rectify the AC line, and mainly
care about the *peak* voltage. Phase control on a square wave inverter
is not effective with such loads. You should not power such devices from
an inverter that just controls pulse width.

Light bulbs, heaters, motors, transformers, and other simple loads care
about the RMS value of the voltage, not the peak. So you *can* power
such loads with a simple inverter that just controls pulse width. For
example, 240vdc can be inverted into a 240vac square wave, and then
phase controlled to become a 0v/+240v/0v/-240v "modified sine wave". If
the total on-time is 25%, the RMS voltage is 120v, and will power a 120v
light bulb or heater exactly the same as if it were on 120vac. At 60hz,
this means:

  0v from  0    -  6.25 msec
240v from  6.25 -  8.33 msec
  0v from  8.33 - 14.58 msec
240v from 14.58 - 16.67 msec

An inductive load like a motor or transformer will require a slightly
different ratio. The exact ratio depends on how heavily loaded it is; a
light load it is mainly inductive and is more towards 50% on-time.
Heavily loaded it moves toward a resistive load and 25% on-time.

Yes, the actual voltage applied to the device is much higher. But
essentially all motors and transformers have enough insulation to pass
UL hipot testing, which requires 1250 vac or more.

> Actually, my goal is to get high power AC from my '04
> Prius.  I have alrealy tapped into the 201.6V pack
> with a pair of 10 gauge wires.  The test data on this
> site (www.priups.com) shows that the voltage would
> vary between about 210-230V if the battery is down to
> 2 bars and the ICE kicks in to recharge it to 3 bars.
> If scaled properly, this voltage range would produce
> 110-120Vac or 220-240Vac without any adjustment.  This
> is very tempting.  (An EV would have a higher ranges
> of voltage swing that might need a variac if set up
> this way.)  The idea of having an AT-PZEV 10kW backup
> generator in the garage is pretty exciting.

If you want to power any arbitrary load that you might plug in, then you
need a "proper" inverter that delivers something closer to a sine wave.
To make *any* load work, you will need a true sinewave inverter.
-- 
"One doesn't discover new lands without consenting to lose sight of the
shore for a very long time."        -- Andre Gide
--
Lee A. Hart, 814 8th Ave N, Sartell MN 56377, leeahart_at_earthlink.net
Message-ID: <[EMAIL PROTECTED]>
Date: Mon, 15 Aug 2005 15:18:52 -0500
From: Danny Miller <[EMAIL PROTECTED]>
MIME-Version: 1.0
To: ev@listproc.sjsu.edu
Subject: Re: 200VDC to 120VAC Inverter
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
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Such high current peaks from a 240v source may have additional 
consequences.  An incandescent bulb may have an audible hum.  No telling 
what a florescent light with ballast would do but it's probably not good.

Edward, you should also be aware the modified sine wave- a square wave 
with "dead" periods- needs to create a low impedance path between the 
two wires during the dead periods.  Otherwise the inductance of a load- 
or even the inductance of the wire going to a non-inductive load such as 
a light bulb- will create a destructive high voltage kick when the 
current source is switched off and the source impedance is left high.  
Additional MOSFETs are needed to do this and the trick is in avoiding 
shorting the source out by having the MOSFETs turn on really close to 
each other yet not overlapping.

Computers and SMPS-driven devices actually do quite well on MSW 
inverters.  Some, but not all of those, are also insensitive to source 
voltage up to 240v.  What doesn't work on MSW is SCR-driven dimmers.  I 
have a digital temp-controlled Weller soldering station that powers up 
but generates no heat on an inverter.  SCRs don't necessarily require a 
sine wave but require a changing voltage across the waveform to carry 
out any regulating function, a triangle wave works fine too.  The way 
the circuits drive them they're usually all on or all off for the entire 
waveform (generally all off).  Actually if the circuit uses a zero point 
crossing delay trigger it might work but haven't seen it in the few 
devices I've tried.

Danny

Lee Hart wrote:

>If
>the total on-time is 25%, the RMS voltage is 120v, and will power a 120v
>light bulb or heater exactly the same as if it were on 120vac. At 60hz,
>this means:
>
>  0v from  0    -  6.25 msec
>240v from  6.25 -  8.33 msec
>  0v from  8.33 - 14.58 msec
>240v from 14.58 - 16.67 msec
>  
>
Message-ID: <[EMAIL PROTECTED]>
From: "Sharon Hoopes" <[EMAIL PROTECTED]>
To: "ev" <ev@listproc.sjsu.edu>
Subject: 914 FOR SALE
Date: Mon, 15 Aug 2005 13:25:09 -0700
MIME-Version: 1.0
Content-type: text/plain; charset=US-ASCII


YES! I HAVE A "71" 914 PORSCHE FOR SALE < http://home.netcom.com/~slh4/ >

Bill & Sharon Hoopes
[EMAIL PROTECTED]

Message-ID: <[EMAIL PROTECTED]>
Date: Mon, 15 Aug 2005 13:36:54 -0700 (PDT)
From: Rod Hower <[EMAIL PROTECTED]>
Subject: Re: Motor dynometer
To: ev@listproc.sjsu.edu
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
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Mike,
Here's the resistors I used on my dyno;

http://www.aaaim.com/u/web/aaaimc/cgi-local/shop991/shop.pl/SID=153488156/page=REST.htm#RS9300

HIGH POWER RESISTORS 0.110 ohm (tapped) . Approx. 170
amps. KIF 4-1/2" dia. x 19-1/2" long.Weight 17 lbs.
Ribbon-type. Range from approx. 750 to 6000 watts.
Ceramic core with welded end terminal for stud-type
mounting. Stock #RS9551 $25.00

Rod

--- "M.G." <[EMAIL PROTECTED]> wrote:

> I am not worried about the hp and torque. I know the
> motor will provide 
> enough. What I will be trying to accomplish is a
> high voltage controller 
> for the sem motor.
> It is set up for 48 volts from the factory, I would
> like to modify it to 
> run at approx 150 volts.
> Mike G.
> 
> M.G. wrote:
> 
> 
> >> If I connect the two motors together what should
> I use for
> >> a suitable load on the series motor? 
> >  
> >
> 
> What method will you use to measure the hp/tq?
> 
> 
> 
> 
Message-ID: <[EMAIL PROTECTED]>
From: "Sharon Hoopes" <[EMAIL PROTECTED]>
To: "ev" <ev@listproc.sjsu.edu>
Subject: PORSCHE FOR SALE
Date: Mon, 15 Aug 2005 13:34:31 -0700
MIME-Version: 1.0
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This is a multi-part message in MIME format.

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YES! I HAVE A "71" 914 PORSCHE FOR SALE 

Bill & Sharon Hoopes
[EMAIL PROTECTED]



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Message-ID: <[EMAIL PROTECTED]>
From: "Roderick Wilde" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Subject: Shameless Plug: Citizens for Rideable Communities
Date: Mon, 15 Aug 2005 13:43:29 -0700
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Hi All, I have started a new organization here in Port Townsend Washington 
USA. www.rideablecommunities.org. I would greatly appreciate it if all my 
friends in the EV World all over the world would endorse my site if they 
agree with it's principals. There is an endorsement link at the top of the 
page. We will be adding content daily. Thank you all so very much in 
advance!

Roderick Wilde




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