EV Digest 6809
Topics covered in this issue include:
1) AGNuS up close and personal
by Chip Gribben <[EMAIL PROTECTED]>
2) Re: Best Conversion Vehicle
by Bob Bath <[EMAIL PROTECTED]>
3) Re: Solectra/Azure - A123 response + A Great Idea!!
by "Matt Kenigson" <[EMAIL PROTECTED]>
4) What is coroplast?
by "Roger Daisley" <[EMAIL PROTECTED]>
5) Re: What is coroplast?
by "Sheldon Young" <[EMAIL PROTECTED]>
6) Re: AGNS to run for 168 Volt Record Tonight
by Jim Husted <[EMAIL PROTECTED]>
7) Available controllers
by Peter Eckhoff <[EMAIL PROTECTED]>
8) Bill Dube ("Teamchef von KillaCycle") in Huntsville on May 28th
by Bill Dube <[EMAIL PROTECTED]>
9) Re: What is coroplast?
by Danny Miller <[EMAIL PROTECTED]>
10) Re: Available controllers
by "Dmitri" <[EMAIL PROTECTED]>
11) RE: How regen works
by "George Swartz" <[EMAIL PROTECTED]>
12) Re: Solectra/Azure - A123 response + A Great Idea!!
by Tehben Dean <[EMAIL PROTECTED]>
13) Re: Solectra/Azure - A123 response + A Great Idea!!
by electro <[EMAIL PROTECTED]>
14) Victor How regen works
by [EMAIL PROTECTED]
15) Re: Solectra/Azure - A123 response + A Great Idea!!
by "Matt Kenigson" <[EMAIL PROTECTED]>
16) Re: Bill Dube ("Teamchef von KillaCycle") in Huntsville on May 28th
by "Matt Kenigson" <[EMAIL PROTECTED]>
17) Re: Solectra/Azure - A123 response + A Great Idea!!
by [EMAIL PROTECTED]
18) Re: How regen works
by "(-Phil-)" <[EMAIL PROTECTED]>
19) Battery prices
by "Matt Kenigson" <[EMAIL PROTECTED]>
20) Re: Reality check, Re: Permanent magnet motor question
by Paul <[EMAIL PROTECTED]>
21) EVLN('EVs for Sale' on the web)
by bruce parmenter <[EMAIL PROTECTED]>
22) Fwd: Re: Building a Variable Voltage, High Current Batt Charger
by Rod Dilkes <[EMAIL PROTECTED]>
23) RE: EVLN('EVs for Sale' on the web)
by Mike Willmon <[EMAIL PROTECTED]>
24) White Zombie gets to 'test' drive Lithium!
by John Wayland <[EMAIL PROTECTED]>
25) RE: White Zombie gets to 'test' drive Lithium!
by Mike Willmon <[EMAIL PROTECTED]>
26) Re: Electric motorcycle review comming next week
by lyle sloan <[EMAIL PROTECTED]>
27) Re: Battery prices
by Mark Dutko <[EMAIL PROTECTED]>
28) Re: Reality check, Re: Permanent magnet motor question
by "Evan Tuer" <[EMAIL PROTECTED]>
29) Re: Raptor 600 problem
by "(-Phil-)" <[EMAIL PROTECTED]>
30) Re: Available controllers
by "(-Phil-)" <[EMAIL PROTECTED]>
31) Re: Reality check, Re: Permanent magnet motor question
by Danny Miller <[EMAIL PROTECTED]>
--- Begin Message ---
For those who want to take a real good look at the bike that is
causing NEDRA MT records to fall here it is
http://www.nedra.com/photos/100mphclub/agnus_640.jpg
And the latest entry for the NEDRA 100 MPH Club with the picture and
the technical specs
http://www.nedra.com/100mph_club.html#agnus
Shawn is going for another record tonight.
Chip Gribben
NEDRA
http://www.nedra.com
--- End Message ---
--- Begin Message ---
I hear what you're saying, but keep in mind that the
Gen. 5 sedan will let you lay the seat down. Having
owned a gen 4 wagovan (1990), I can tell you that the
sedan will hold close to, if not more than the same
sq. ft. of gear. Although I haven't done side-by-side
measurements, I feel that in remembering the size of
the spare tire wells and the stubby hood of the '90,
that you won't get all 18 batts. in the wagovan...
--- Jerry McIntire <[EMAIL PROTECTED]> wrote:
> Bob,
>
> How does the 90-91 Civic Wagovan compare with the 92
> Civic in your
> estimation? Sedans just make no sense to me (with
> dogs, kids, and
> sports equipment), and the Wagovan hardly weighs
> more.
>
> Jerry
>
>
Converting a gen. 5 Honda Civic? My $20 video/DVD
has my '92 sedan, as well as a del Sol and hatch too!
Learn more at:
www.budget.net/~bbath/CivicWithACord.html
____
__/__|__\ __
=D-------/ - - \
'O'-----'O'-'
Would you still drive your car if the tailpipe came out of the steering wheel?
Are you saving any gas for your kids?
____________________________________________________________________________________Be
a better Globetrotter. Get better travel answers from someone who knows.
Yahoo! Answers - Check it out.
http://answers.yahoo.com/dir/?link=list&sid=396545469
--- End Message ---
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" ... putting the coroplast between the metal rack and the battery is also
important to cut down on leakage current"
Who, what, when, where and why?
--- End Message ---
--- Begin Message ---
Coroplast is corrugated plastic, basically plastic cardboard. It is
often used for signs so try a sign shop if you can't find any at your
local hardware supply store.
You can get a visual at http://www.coroplast.com
On 5/23/07, Roger Daisley <[EMAIL PROTECTED]> wrote:
" ... putting the coroplast between the metal rack and the battery is also
important to cut down on leakage current"
Who, what, when, where and why?
--- End Message ---
--- Begin Message ---
Hey Lawless
I just talked to Wayland and told him about your drive
line issues. He said he was sooo proud, LMAO!
He's been working late hours so I just wanted to chime
in for him.
So how'd it go tonight?
Cya
Jim Husted
Hi-Torque Electric
____________________________________________________________________________________Building
a website is a piece of cake. Yahoo! Small Business gives you all the tools to
get online.
http://smallbusiness.yahoo.com/webhosting
--- End Message ---
--- Begin Message ---
One of our members has a blown Golf Industries controller in his Fiero.
Besides a Curtis, what other controllers are available for a 120 volt
pack that have similar dimensions to a Curtis?
--- End Message ---
--- Begin Message ---
I'm going to be in Huntsville, Alabama on May 28th on business. I
have the afternoon and evening free that day if anyone wants to chat
about EVs or show me their EV project.
Bill Dube'
--- End Message ---
--- Begin Message ---
Plastic shops always carry it.
Danny
Sheldon Young wrote:
Coroplast is corrugated plastic, basically plastic cardboard. It is
often used for signs so try a sign shop if you can't find any at your
local hardware supply store.
You can get a visual at http://www.coroplast.com
On 5/23/07, Roger Daisley <[EMAIL PROTECTED]> wrote:
" ... putting the coroplast between the metal rack and the battery is
also
important to cut down on leakage current"
Who, what, when, where and why?
--- End Message ---
--- Begin Message ---
http://www.logisystemscontrollers.com/
----- Original Message -----
From: "Peter Eckhoff" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Sent: Wednesday, May 23, 2007 8:44 PM
Subject: Available controllers
One of our members has a blown Golf Industries controller in his Fiero.
Besides a Curtis, what other controllers are available for a 120 volt
pack that have similar dimensions to a Curtis?
--- End Message ---
--- Begin Message ---
Dale, I think you are more correct than I am regarding AC regen on EV's,
where I have no direct experience. I am going to research it a little for
my own education. I am not sure where the crossover speed is, where regen
becomes inefficient and most energy is burned up in the motor. At any rate,
most regen energy is recovered at higher speed deltas. One of the best
reasons to have regen to low speed is to have the best transition to
friction brakes, where the driver feels like the car is starting to
accelerate when regen drops out. Takes some getting used to.
On Wed, 23 May 2007 14:46:31 -0600, Dale Ulan wrote
> When I worked on the BREDA articulated dual power buses with
> electric AC propulsion by Westinghouse, I gained some practical
> experience. I initially wondered why they had a DC chopper in the
> system. It was for electrical braking. The shunt chopper boosted
> the rectified voltage off the inverse ....
>
> That's interesting. But a lot of ACIM controllers do not have a separate
> regen circuit - the boost function is only done via software control
> of the 6-pack in the right manner...? Perhaps into a trolley wire it
> needs different control than to a battery pack? Actually, that makes
> sense. The trolley wire interface needs to work with bad connections
> and a battery-driven unit does not.
>
> At low speeds the regen might go away, maybe Victor or other AC
> users can chime in? All of my EV experience (and motor control
> design and repair) have been in BLDC's and they regen nicely to
> low speeds (just about stopped) just using the 6-pack as their
> boost converter.
>
> -Dale
--- End Message ---
--- Begin Message ---
Maybe this list should be moved over to yahoo or something so it can
handle things besides plain text...??? Or is plain text to keep
peoples old computers from using up to much disk space?
On May 23, 2007, at 3:06 PM, Matt Kenigson wrote:
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The text-only rule is one used on many listservs and it is usually
intended to allow the most people to participate. Everyone's mailreader
supports text, but not everyone can handle html. I very much doubt there
is a technical limitation to having the listserv handle things besides
text - it is likely extra code and setup to filter out the html.
p.s. please please don't move the list to yahoo :)
Tehben Dean wrote:
Maybe this list should be moved over to yahoo or something so it can
handle things besides plain text...??? Or is plain text to keep
peoples old computers from using up to much disk space?
On May 23, 2007, at 3:06 PM, Matt Kenigson wrote:
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--- Begin Message ---
Sorry, all. I now get some messages that REQUIRE me to use HTML
formatting in the replies in order to be processed, so I have to
remember to switch back and forth and sometimes I forget. I may
create another gmail account for evdl only so it will always be in
plain text.
In any case, here's the text of my previous message:
Absolutely. I'm all for creating a non-profit and getting some bulk
purchasing going. There are logistical, financial, and governance
issues to be resolved, but if we can get enough interest together I
think we can get most of it sorted out.
I'll put my money where my mouth is, too. Once we sort out the
details of how it would work out, I'll stake $5,000 initially and can
raise more later if necessary toward purchases. Who else is serious
about this? Contact me off-list.
Matt K.
On 5/23/07, electro <[EMAIL PROTECTED]> wrote:
The text-only rule is one used on many listservs and it is usually
intended to allow the most people to participate. Everyone's mailreader
supports text, but not everyone can handle html. I very much doubt there
is a technical limitation to having the listserv handle things besides
text - it is likely extra code and setup to filter out the html.
p.s. please please don't move the list to yahoo :)
Tehben Dean wrote:
> Maybe this list should be moved over to yahoo or something so it can
> handle things besides plain text...??? Or is plain text to keep
> peoples old computers from using up to much disk space?
>
>
> On May 23, 2007, at 3:06 PM, Matt Kenigson wrote:
>
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>
--- End Message ---
--- Begin Message ---
Nashville is only a couple of hours to the North. If you guys put
together a fun outing let me know and I'll join you. I'll be in
Bristol in the morning but should be back in Nashville by early
afternoon. Contact me off-list.
Matt K.
On 5/23/07, Bill Dube <[EMAIL PROTECTED]> wrote:
I'm going to be in Huntsville, Alabama on May 28th on business. I
have the afternoon and evening free that day if anyone wants to chat
about EVs or show me their EV project.
Bill Dube'
--- End Message ---
--- Begin Message ---
electro> p.s. please please don't move the list to yahoo :)
Amen to that. Any idea how long before SJSU moves this list to Mailman?
--
Skip Montanaro - [EMAIL PROTECTED] - http://www.webfast.com/~skip/
--- End Message ---
--- Begin Message ---
Yes, I'm assuming that whatever controller design is in the loop is going to
limit at it's max rating. If you built a controller without any kind of
current limiting, obviously.... BOOM!
If you pull out of your driveway every morning at the top of a steep hill,
you will not want to regen for the reasons you state, (or just never fully
charge before you shove off! ;-) but for most EV driving, it isn't going to
be a problem to regen at high levels (controller limiting). If you wanted
to you could watch battery SOC or voltage to limit regen. The Prius isn't a
fair comparison, as it's going to be charging while you drive, rather than
only once before you start off on your trip. On flat surfaces it's never
going to put more in to the battery than came out.
Obviously you need some way for the driver to control regen current, either
through a brake pedal pot/encoder, or just by letting off the main throttle
(my favorite). Regen current is proportional with it increasing up to only
moderate braking at full release. There is a little dead-band in between
the drive and regen modes so you can easily coast when you want to. It is
a much easier and more fun to drive system IMHO. You just need to make sure
that the controller puts out a brake light signal during regen to let the
traffic know you are braking. For a commercial EV, you wouldn't want this
kind of regen, it would probably scare/confuse the drivers.
-Phil
----- Original Message -----
From: "Lee Hart" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Sent: Wednesday, May 23, 2007 8:05 AM
Subject: Re: How regen works
-Phil- wrote:
My take is that as long as you aren't going down Lombard street in San
Francisco on a fully charged AGM pack, charging current during regen is
not too much of an issue.
You are underestimating how much peak energy a braking system can produce.
It takes 100's of KW to accelerate from 0-60 in 10 seconds. Likewise, you
*generate* 100's of KW to bring the car back down from 60-0 mph in 10
seconds. Any car with halfway decent brakes can easily do this!
Any motor that can run on 100kw (say, 200v at 500 amps) can *generate*
100kw if the controller lets it. You could do this simply by slamming on
the brakes on the freeway at 60 mph; no hills needed.
500 motor amps can spin the tires; so 500 generator amps can also skid the
tires.
If your batteries are mostly full (80% SOC or higher), you need to limit
the charging current or they will go over-voltage and be damaged. In the
Toyota Prius, they deliberately keep their batteries below 80% SOC so they
have "room" for the energy from regenerative braking (up to 40kw in their
system).
So, a regen controller *has* to limit the regen current, or rather violent
things can happen!
--
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
--- End Message ---
--- Begin Message ---
Howdy,
I was hoping to get some of you to help me with an informal battery
price survey. Any of you who are willing, could you call your local
battery hawker (including hawker hawkers) and ask what the current
going rate is for your favorite battery?
Personally, I'm most interested in seeing how much T-125s, T-145s,
US-125s, US-145s, and equivalents are going for. To make this more
useful to others, however, I'm not limiting the battery type. Just
get me prices (off-list) along with specifics about the battery model
and type as well as where and when the quote came from and I'll
compile all the data into a spreadsheet that I'll make available to
everyone who contributes.
Thanks,
Matt Kenigson
--- End Message ---
--- Begin Message ---
On May 23, 2007, at 10:13 AM, Victor Tikhonov wrote:
Twice as efficient motor *only* means twice as few losses, nothing
more.
That is pure marketing speak (I also refer to this as B.S.) Half the
losses does not mean twice the efficiency. Efficiency is based on an
ideal of 1.0. Percentages are nothing but fractions of 1. 95% (0.95)
is not twice 90% (0.90.) On the other hand, losses in this case have
been halved from 0.1 (10%) to 0.05 (5%.)
Paul
--- End Message ---
--- Begin Message ---
EVLN('EVs for Sale' on the web)
[The Internet Electric Vehicle List News. For Public EV
informational purposes. Contact publication for reprint rights.]
--- {EVangel}
[Editor's Notes: I found few EVs for sale on the sites listed
on the EAA EVsForSale page (see below). So, I spent some
time searching as if I were in the market for an EV. As of
05/23/07: ]
Searching Craigslist
SF, CA
http://sfbay.craigslist.org/sby/car/336398709.html
Toyota MR2 Electric Vehicle - Plug In Vehicle - $15800 (sunnyvale)
http://sfbay.craigslist.org/eby/car/335265256.html
197? Dodge Colt, 2-door hardtop, made into electric car, with
charger, $500 or best offer.
LA, CA
http://losangeles.craigslist.org/search/sss?query=%22electric%20car%22
Rent A Car In Los Angeles... Rent An Electric Car - $20 (Santa
Monica, CA)
http://losangeles.craigslist.org/search/sss?query=%22electric%20vehicle%22
EV Volkswagon VW Cabriolet Rabbit Electric Vehicle Conversion
NO GAS - $18950
Seattle, WA
http://seattle.craigslist.org/see/pts/336529538.html
[1937 pu converting to electric,(I know I am probable nuts, but
it is what I am doing)]
Vancouver, BC Ca
http://vancouver.craigslist.org/search/sss?query=%22electric%20car%22
WANTED - Electric Car or Electric Truck with dead/weak batteries
[for roadshow war against climate change]
ELECTRIC VEHICLE: 1979 Omni - no gasoline, only battery-powered -
$1500
WTB: Any electric car or electric truck with 70km range - $5000
http://vancouver.craigslist.org/search/sss?query=%22electric%20vehicle%22
Electric Vehicle: Minivan
Looking for a minivan with an electric motor. Working
mechanically. Dead or missing batteries OK with me.
Anchorage, AK
http://anchorage.craigslist.org/pts/320732098.html
[ICE Nissan/Datsun 810 sedan - $200 Would make a great electric
car conversion]
Searching ebay
http://search.ebay.com/%22electric+vehicle%22
Dodge : Caravan NiMH EV Chrysler EPIC Electric Vehicle (Rare
Collectors) $14,100.00
Ford : Electric Ford Ranger EV - NiMH Electric Vehicle (RARE)
$12,700.00/$29,995.00
Ford : Electric Ford Ranger EV - NiMH Electric Vehicle (RARE)
$10,100.00/$29,995.00
http://search.ebay.com/%22electric%2Bcar%22
EAA 'EVs for Sale' page links:
http://eaaev.org/eaaevsforsale.html
Austin EAA's EV Tradin' Post
Oregon EVA Buy/Sell/Trade
Phoenix EAA
Silicon Valley EAA
Triangle EAA
EV America's EVs for sale page
EV FINDER
-
Bruce {EVangel} Parmenter
' ____
~/__|o\__
'@----- @'---(=
. http://geocities.com/brucedp/
. EV List Editor & AFV newswires
. (originator of the above ASCII art)
===== Undo Petroleum Everywhere
: MEPIS Linux & WiFi powered :
____________________________________________________________________________________Boardwalk
for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's
economy) at Yahoo! Games.
http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow
--- End Message ---
--- Begin Message ---
You don't actually need a special charger for lithiums.
Just about any CC/CV lead acid charger would be suitable.
What you do need is a BMS to balance the pack.
There are several on the market.
Regards, Rod Dilkes
www.ev-power.com.au
--- End Message ---
--- Begin Message ---
Funny you should find this one. They say it would be a good "ice racer" and an
electric conversion.
Now there is sport, racing electric vehicles on the ice. I'm picturing White
Zombie with 2" stainless spikes for racing on a
frozen lake, like these
http://www.racingontherocks.com/images/IceRacing2006/GIR2006-T1707.JPG
http://www.racingontherocks.com/images/IceRacing2006/GIR2006-T1697.JPG
:-O
Anchorage, AK
http://anchorage.craigslist.org/pts/320732098.html
[ICE Nissan/Datsun 810 sedan - $200 Would make a great electric
car conversion]
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Behalf Of bruce parmenter
> Sent: Wednesday, May 23, 2007 9:25 PM
> To: evlist
> Subject: EVLN('EVs for Sale' on the web)
>
>
> EVLN('EVs for Sale' on the web)
> [The Internet Electric Vehicle List News. For Public EV
> informational purposes. Contact publication for reprint rights.]
> --- {EVangel}
> [Editor's Notes: I found few EVs for sale on the sites listed
> on the EAA EVsForSale page (see below). So, I spent some
> time searching as if I were in the market for an EV. As of
> 05/23/07: ]
>
> Searching Craigslist
>
--- End Message ---
--- Begin Message ---
Hello to All,
With our first runs of the year in the 12.1 range again, Killacycle's
flirting with the 7s, and now 'Lawless Shawn' tearing up the track, 2007
is fulfilling the prophesy of being of being the best drag racing EV
performance year yet! How cool is all this, that it's timed perfectly
for the celebration of NEDRA's 10 year anniversary?
Before pulling White Zombie's injured motor last Saturday (now in Jim's
loving hands), I had the fun of driving it about 14 miles to and from
the Albertson Distribution Center's digital weigh scales a few days ago.
The Enersys (Hawker) batteries (360V nominal) laughed at this trip and
were sitting at 379V right after turning off the key when I got back
home. Moments later they were at 383V before I put it on charge. It took
5.3 ahrs to replenish what 14 miles took from the pack. The 360V twin
pack is rated at 32 ahr C10, and at the reduced cruise current a 360V
car has at the 35-45 mph speed limits of this trip there's probably 20
ahr of usable EV capacity...that works out to 52 miles range. Not too
bad for a 12 second drag car!
The bad news, White Zombie at present, weighs nearly 2600 lbs. Yes, I
said nearly 2600 lbs.! I was pretty disgusted to see that the '07
version of White Zombie with all of its 840 lbs. of lead in it, even
with the new 30+ lbs. lighter battery compartments, weighs in at a porky
2580 lbs.! With me in it (speaking of porky) the scales accurately
jumped up to an even 2800 lbs....yikes! Still, in March this 2580 lb.
car ran a 12.161 at close to 107 mph, that, with the still-new and
un-broken-in battery pack restricted to just 1000 amps. It can make up
to 1500 amps.
I ran White Zombie through several different HP calculators to see what
it 'normally' takes to push a 2580 lb. car + its 200 lb. driver through
the 1/4 mile in 12.161 seconds, and came up with these stats:
dragtimes.com calculator says........................284 hp at the motor
dsm.org/tools/calchp calculator says ..............306 hp at the motor
speedworldmotorplex.com calculator says.... 310 hp at the motor
fastcoolcars.com calculator says.................... 355 hp at the motor
engineersedge.com calculator says................ 397 hp at the motor
With the new drag race model light weight Wilwood disc brake kit on hand
to replace the current heavy drum brake affair and the Strange
Engineering aluminum Ford nine case also sitting here ready to swap
places with the heavy steel case one in the car, there's probably 50
more lbs. that will be coming off, so the curb weight should drop to
about 2530 lbs. with these two improvements. Another 12 lbs. can be
removed if I replace the 13.5 lb. 12V battery with four tiny A123 cells
as a back up to the DC-DC (if we can ever get it to work reliably), so
that would lower it down to 2518 lbs. The current heavy gauge steel
motor brace/brackets weigh 14 lbs., but aluminum versions would shave
off another 9 lbs.,...the car would then be down to 2509 lbs. Changing
the long 4/0 cables that take the battery power from the rear of the car
forward to 2/0 instead, would drop more voltage under load, but it would
also shave off another 15 lbs. or so (gotta think hard about this mod,
though)....the car would dip to under 2500 lbs. to 2496 lbs.
Now...doing all the above, then pulling out 840 lbs. of lead and
replacing it with a 175 lb. lithium pack (Dube's spare bike pack will be
on loan for the day at the Wayland Invitational III) makes an 1831 lb.,
~ 300 hp machine!!! With a two step taller rear end ratio of 3:70
replacing the current 4:11 gears WZ will be capable of 125+ mph while
staying in a safe rpm range...the motor sections should not see more
than 160V each. We'll probably be adding wheelie bars to the car for the
Wayland Invitational races, as minus 665 lbs., most of which is ahead of
the rear axle, a sub-1850 lb. WZ with the pack set to deliver 1400 amps
will surely reach for the sky on launch. If we can hook up and keep the
car on the track, and if the motor does not arc-over and self-destruct,
very low 11s are a certainty, and maybe even high 10s are possible! With
Killacycle shooting for the 7s and our quest for the 11s, I like the
ring of it...Oh thank heaven, for 7 - 11! (credit Jim Husted for making
the 7 - 11 connection)
Before the exciting July races though, the mighty Enersys pack will be
called on to deliver more power than it did in March, as we will turning
up the screws and will be running at a higher 1200 battery pack amps as
we again, reach for the 11s.
See Ya.....John Wayland
11 in 07!
--- End Message ---
--- Begin Message ---
John,
Nice lead-in for the Invite!! What does Bill figure it would cost to create a
pack such as the one you are borrowing from him?
This will provide a nice data point to compare against once you get the Enersys
pack back in at max amps.
Mike,
Anchorage, Ak.
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Behalf Of John Wayland
> Sent: Wednesday, May 23, 2007 10:09 PM
> To: ev@listproc.sjsu.edu
> Subject: White Zombie gets to 'test' drive Lithium!
>
>
> Hello to All,
>
> With our first runs of the year in the 12.1 range again, Killacycle's
> flirting with the 7s, and now 'Lawless Shawn' tearing up the track, 2007
> is fulfilling the prophesy of being of being the best drag racing EV
> performance year yet! How cool is all this, that it's timed perfectly
> for the celebration of NEDRA's 10 year anniversary?
>
--- End Message ---
--- Begin Message ---
It will be about the Lightning Lithium E1 built by
electricmotorsport for Rich Hatfield. Patrick from
electricmotorsport gave an announcement about an
upcoming article also at
http://endless-sphere.com/forums/ in the cycle section
where you can see pics of the bike at both the makers
fair and legend of the motorcycle. (BTW
endless-sphere.com and visforvoltage.net were both
created to fill the void of visforvoltage dot comPlus
there is a small write-up on the cycle at
electricmotorcycles.net
Lyle
--- JS wrote:
> Just one line at the bottom of the page in the Los
> Angeles Times Highway 1:
> "Throttle jockey: Columnist Susan carpenter is on
> assignment. Next week,
> she reviews an electric motorcycle and gives her
> take
> on the changes in store thanks to better batteries"
>
>
____________________________________________________________________________________
No need to miss a message. Get email on-the-go
with Yahoo! Mail for Mobile. Get started.
http://mobile.yahoo.com/mail
--- End Message ---
--- Begin Message ---
Orbitals go up in June 1- Just got the dealer notice..
On May 23, 2007, at 9:35 PM, Matt Kenigson wrote:
Howdy,
I was hoping to get some of you to help me with an informal battery
price survey. Any of you who are willing, could you call your local
battery hawker (including hawker hawkers) and ask what the current
going rate is for your favorite battery?
Personally, I'm most interested in seeing how much T-125s, T-145s,
US-125s, US-145s, and equivalents are going for. To make this more
useful to others, however, I'm not limiting the battery type. Just
get me prices (off-list) along with specifics about the battery model
and type as well as where and when the quote came from and I'll
compile all the data into a spreadsheet that I'll make available to
everyone who contributes.
Thanks,
Matt Kenigson
--- End Message ---
--- Begin Message ---
On 5/24/07, Paul <[EMAIL PROTECTED]> wrote:
On May 23, 2007, at 10:13 AM, Victor Tikhonov wrote:
> Twice as efficient motor *only* means twice as few losses, nothing
> more.
That is pure marketing speak (I also refer to this as B.S.) Half the
losses does not mean twice the efficiency. Efficiency is based on an
ideal of 1.0. Percentages are nothing but fractions of 1. 95% (0.95)
is not twice 90% (0.90.)
I think this is why, in the financial world, they speak of "percentage points".
I.e. in this case, it would be clear that the more efficient motor is
5 percentage points more efficient than the competition, which is a
very meaningful figure, and easy to understand.
If you say "5%" more efficient, people have to guess whether you meant
"percentage points" or "percentage of a percentage".
On the other hand, losses in this case have
been halved from 0.1 (10%) to 0.05 (5%.)
True, but even so, it's highly confusing to *only* mention this fact,
especially if you say "twice as few" :)
--- End Message ---
--- Begin Message ---
Maybe a silly question, But have you checked your throttle pot to make sure
it's putting out the right resistance, and traveling the full range?
-Phil
----- Original Message -----
From: "Andrew A." <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Sent: Wednesday, May 23, 2007 11:15 AM
Subject: Raptor 600 problem
Hi guys,
I'm having some trouble with my Raptor 600. I'm
running a 120v system with a Kostov 9" motor, using
the stock inductive throttle sensor and no tach
sensor.
The problem is this:
I have everything wired up. When I power up the
controller, it does the self check, the green light on
the remote display comes on, and the main contactor
closes. When I step on the gas, it puts power to the
motor. It just doesn't have any power. I mean, we're
talking 10 mph MAX (floored) in second gear.
This is where it gets weird. There is almost no
voltage drop when I floor it, and it only draws ~50A.
I tried calibrating the max throttle setting, but no
matter what I do I can't get the yellow light to come
on. I can get some small changes in the amount of
power delivered by tweaking the current limit and max
throttle pots, but nothing serious.
And now it gets even weirder. I put the car up on jack
stands and tried running it up. Same results. No
power, no amp draw. The next thing we tried was
tweaking the max throttle pot while the motor was
running. When you turn the pot, it acts like a
throttle control, provided the motor is already
running. You can rev it up to 150+ amps and spinning
like crazy (no load) just by turning the pot.
If you set the pot to a setting where the motor revs
up, and then get off the gas, and back on, it acts
just like before the adjustment. Sluggish and all.
I don't have a clue what to make of it. I'm really at
a loss for ideas.
I've opened up the controller and looked for problems.
There is no smoke smell, there is very little
corrosion on anything, and I've checked both
calibration pots with a VOM. Everything checks out
fine.
Sorry for the long post. Anyway, any assistance would
be greatly appreciated.
Thanks!
Andrew
____________________________________________________________________________________Boardwalk
for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for
today's economy) at Yahoo! Games.
http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow
--- End Message ---
--- Begin Message ---
Incidentally, I've fixed several of these. It's a hacked Curtis with a new
daughterboard.
If the MOSFETs aren't blown, it might be a cheap fix. I'd be willing to
look at it if you are willing to send it!
-Phil
----- Original Message -----
From: "Peter Eckhoff" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Sent: Wednesday, May 23, 2007 5:44 PM
Subject: Available controllers
One of our members has a blown Golf Industries controller in his Fiero.
Besides a Curtis, what other controllers are available for a 120 volt
pack that have similar dimensions to a Curtis?
--- End Message ---
--- Begin Message ---
If you had a sale that says 10% off everything in the store but if you
show up before 10AM it's 20% off, do you write the ad as "DOUBLE THE
SAVING BEFORE 10AM!!!"
or do you say "HALF THE PRICE BEFORE 10AM!!!"?
Don't think that second one is going to fly.
Danny
Paul wrote:
On May 23, 2007, at 10:13 AM, Victor Tikhonov wrote:
Twice as efficient motor *only* means twice as few losses, nothing
more.
That is pure marketing speak (I also refer to this as B.S.) Half the
losses does not mean twice the efficiency. Efficiency is based on an
ideal of 1.0. Percentages are nothing but fractions of 1. 95% (0.95)
is not twice 90% (0.90.) On the other hand, losses in this case have
been halved from 0.1 (10%) to 0.05 (5%.)
Paul
--- End Message ---
