EV Digest 3831
Topics covered in this issue include:
1) RE: Heater Cored
by "Bill Dennis" <[EMAIL PROTECTED]>
2) Re: Non-Polarized ultracaps
by Lee Hart <[EMAIL PROTECTED]>
3) Re: The first EV sports car
by "Philippe Borges" <[EMAIL PROTECTED]>
4) Re: Non-Polarized ultracaps - double the energy?
by "Philip Marino" <[EMAIL PROTECTED]>
5) Re: The first EV sports car
by "Philippe Borges" <[EMAIL PROTECTED]>
6) Re: ADC Motors: C-Face?
by Eric Poulsen <[EMAIL PROTECTED]>
7) Re: ADC Motors: C-Face?
by "Rich Rudman" <[EMAIL PROTECTED]>
8) Re: ADC Motors: C-Face?
by "Rich Rudman" <[EMAIL PROTECTED]>
9) Re: Thunder Sky & AGM hybrid pack Re: Thundersky Lithium
by Victor Tikhonov <[EMAIL PROTECTED]>
10) Re: Thunder Sky & AGM hybrid pack Re: Thundersky Lithium
by Victor Tikhonov <[EMAIL PROTECTED]>
11) Re: ADC Motors: C-Face?
by "Rich Rudman" <[EMAIL PROTECTED]>
12) RE: Non-Polarized ultracaps - double the energy?
by "Andre Blanchard" <[EMAIL PROTECTED]>
13) Re: Thunder Sky & AGM hybrid pack Re: Thundersky Lithium
by Victor Tikhonov <[EMAIL PROTECTED]>
14) Re: Ultracap cell balancing
by Victor Tikhonov <[EMAIL PROTECTED]>
15) Rome traffic 'electrified' by microcars
by Lee Dekker <[EMAIL PROTECTED]>
16) Re: Non-Polarized ultracaps
by Victor Tikhonov <[EMAIL PROTECTED]>
17) Re: Ultracapap Polarity
by Victor Tikhonov <[EMAIL PROTECTED]>
18) Gas is too cheap
by "Markus L" <[EMAIL PROTECTED]>
19) Re: Gas is too cheap
by Evan Tuer <[EMAIL PROTECTED]>
20) RE: Gas is too cheap
by [EMAIL PROTECTED]
21) Re: Non-Polarized ultracaps - double the energy?
by Lee Hart <[EMAIL PROTECTED]>
22) RE: Gas is too cheap
by David Dymaxion <[EMAIL PROTECTED]>
23) TEVan and Curtis 400A
by Rod Hower <[EMAIL PROTECTED]>
24) Re: Like engineers discussing EVs:
by Martin Klingensmith <[EMAIL PROTECTED]>
25) My new EV!
by TiM M <[EMAIL PROTECTED]>
26) Lambretta From Hell
by [EMAIL PROTECTED]
27) Re: ADC Motors: C-Face?
by "Rich Rudman" <[EMAIL PROTECTED]>
--- Begin Message ---
I'll try to post some pictures over the weekend.
Bill
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Don Cameron
Sent: Thursday, September 30, 2004 10:31 AM
To: [EMAIL PROTECTED]
Subject: RE: Heater Cored
Nice job! Have any pictures?
See the New Beetle EV Conversion Web Site at
www.cameronsoftware.com/ev/
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Bill Dennis
Sent: September 30, 2004 8:09 AM
To: [EMAIL PROTECTED]
Subject: Heater Cored
I cored my heater core, and it worked out great! Last night I took apart
the dash and removed the heater core out of my Geo Metro. Since the ceramic
heater I purchased from KTA comes with its own plastic casing, I had an
idea. Firing up the jig saw, I cut out the finned radiator middle part of
the Metro's old core. Then I screwed a 7/8-inch plastic spacer onto two
sides of the KTA casing and popped the new unit back into the middle of the
old core where I'd just removed the radiator part. It made a nice, tight
fit, and I screwed it in place then slid the whole unit right back into the
ductwork where it had come from.
I hope everything on my conversion works out this perfectly. :)
Bill Dennis
--- End Message ---
--- Begin Message ---
Mark Hanson wrote:
> I was told by Maxwell that ultracaps are non-polarized and don't
> care if they are reversed.
Please check on that! The ones I am familiar *are* polarity sensitive,
and fail if reversed.
If Maxwell's are *not* polarity sensitive, and work equally well with
either polarity, then they can effectively double the energy they can
store by using them in a bipolar circuit (take them from +2.5v to
-2.5v).
--
"Never doubt that the work of a small group of thoughtful, committed
citizens can change the world. Indeed, it's the only thing that ever
has!" -- Margaret Mead
--
Lee A. Hart 814 8th Ave N Sartell MN 56377 leeahart_at_earthlink.net
--- End Message ---
--- Begin Message ---
I suppose the Tzero can beat them in short drag race because it use traction
control...
do sport ICE cars have it ?
a french goodyear TV publicity said :
without traction horsepower is nothing....
:^)
Philippe
Et si le pot d'échappement sortait au centre du volant ?
quel carburant choisiriez-vous ?
http://vehiculeselectriques.free.fr
Forum de discussion sur les véhicules électriques
http://vehiculeselectriques.free.fr/Forum/index.php
----- Original Message -----
From: "John Westlund" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 8:16 AM
Subject: Re: The first EV sports car
> >John, where are you getting these stats? Take it >from me,
> getting a street legal
> >electric
> >car into the 12's is no small task. Getting a >production
> based, all steel car
> >with real
> >windows, real bumpers, real doors, and a real roof, >to run
> in the 12's let alone
> >11's, is
> >very hard to do.
>
> I was quoting Chris Dixon's article in the NY Times.
>
> "What will a Tzero buyer get?
>
> A car that, from zero to 100 and through the quarter mile,
> will run with, or
> beat, the $281,000 Lamborghini Murciélago, the $224,000
> Ferrari 575M
> Maranello or the $440,000 Porsche Carrera GT."
>
>
http://travel2.nytimes.com/mem/travel/article-page.html?res=9B01E3DC123AF93AA2575AC0A9659C8B63
>
> The article may be wrong, but if it is viewed as a correct
> source at first glance, then given what 575Ms, Murceilagos,
> and Carrera GTs pull, you could say it is somewhere in the
> high 11s, low 12s. I have always wondered where Chris Dixon
> got that stat from, but maybe I made an error in assuming it
> to be correct. The Murceilago pulls high 11s alone. If the
> TZero can run with as the article claims and if the article
> is correct, I'd assume at slowest the TZero would perform
> well into the 12s.
>
> Just my guess.
>
> I have absolutely no doubts about the difficulty of getting
> an EV to even go below the 14s. I certainly forsee
> difficulty with my future project of even getting below the
> 15s if I go everything right.
>
> I certainly have not found any time slips of the TZero, and
> I'm with you there. I'd like to see that NY Times writer
> present them. ;)
>
> >I'd like to see a real car with their technology >poured
> into it. A small
> >production car made like other cars on the road, a >car
> that passes all standards
> >other
> >cars must pass, a car with functioning doors and all >the
> other expected
> >features...then
> >tout what 'this' car can do. For me, this would be >far
> more impressive
> >than what the current 'car' does. Imagine how the >general
> public would respond
> >when seeing
> >a comparison of say a Toyota Corolla XRS, a spunky >boy
> racer 170 hp sedan with
> >0-60 in 7.1
> >seconds and a 1/4 mile ET of 15.8, to the 230 hp >electric
> Corolla EV with 0-60
> >in the low
> >5 second range, a 1/4 mile ET in the mid 13's, and a
> >never-have-to-go-to-the-gas-station
> >range of 200-230 miles! Do you have any idea how >many
> eyebrows this would raise?
>
> I completely agree with you on the point of using an actual
> car, not because that sort of car appeals to me(I'm more of
> a fan of tiny impractical toys myself), but for the very
> reason you stated. Getting a consumer interested in EVs by
> showing them as practical. Imagine, say, a modernized
> version of a Plymouth Fury, only fully electric, much more
> aero and lighter than the original, similar seating room,
> nice, smooth ride, and at least 200 horsepower on tap.
> Perhaps a nice real(even in bad weather) range of 180-220
> miles. Seats 6, has air conditioning, heating, airbags in
> all the desired places, television set with DVD player, ect.
> THAT would really get people attracted to EVs, along with
> throwing them in with a sort of musclecar stigma, especially
> if it could accelerate from 0-60 faster than the classic
> hemi musclecars.
>
> As much as we disagree(maybe?) on the validity of 'scare
> stories' some environmentalists have used(wherin I see many
> of the issues they bring up are legitamate), I believe your
> approach is the most valid at getting EVs accepted into the
> main stream. People will have to want them, not because they
> are told they need to adopt them, but because they actually
> see them as desirable, fun, and see certain pluses over
> gasoline cars. Forcing them on people won't work, especially
> when people don't know much about them. I heavily appreciate
> what you have done for EVs, and your Blue Meanie does a
> great demonstration of the things the non-EV educated auto
> owner wishes to see any car have. I cannot wait for you to
> get a lithium pack in that thing. The sound system really
> does the trick at getting attention and acceptance, I think!
>
> Your Crolla idea would have all the ricers, that specific
> group of who I wish to eventually embarass with an electric
> Triumph ;-), in an uproar, if not an outright state of
> shock. I'd certainly be impressed at such a car as you have
> in mind. Just imagine giving people rides in such a car as
> that EV Corolla you have in mind. :-)
>
> I think the technology is there, or at least on the verge of
> being there, for a viable replacement to the IC engine with
> few compromises. The hurdles to overcome are looking more
> and more like ones of either money(as in start up capital
> for pilot production) or in general production volume. Lets
> take the Jester EV, for instance. www.evuk.co.uk did a few
> articles on this car, and the owner claims he could get this
> 150+ mile range EV to sell at a profit with about a $30,000
> price tag, in production volumes of < 50 a year. It may not
> at all be practical, and again, is a kit car of the tackiest
> variety with little on looks and utility, but just seeing
> that claim says something about how far this technology has
> progressed and hints at its viability (
>
http://web.archive.org/web/20040213225920/http://www.evuk.co.uk/news/index.html
> ). There is also a study on the merits of BEVs vs. Fuel
> Cells, and using stats from at least 5 years ago, it came to
> the conclusion that a drivetrain and battery system Honda
> Civic-like EV with 130 or so horsepower and a 300 mile range
> was possible in mass production for about $20k (
> http://www.evuk.co.uk/EAVES_BEV_VS_FCV 040703.pdf ). Both
> the claim of Greener Energy about the Jester and this study
> should be taken with a grain of salt, but I think they say
> something of merit, no matter how small, about the state of
> this technology.
>
> If only folks like you had a bunch of money to burn and if
> only a managemnt system for Li ions were mass produced, I am
> certain we may be seeing some conversions on the road that
> do most everything an IC car does, perhaps then some. I'm
> eagerly awaiting certain folks on this list to convert their
> Honda Insights to pure EVs and try lithium packs in them
> with full functioning BMS systems for blistering
> acceleration and ~200 miles range.
>
> I hope you certainly comment on this. I love discussing and
> thinking about examples and implications of this technology.
> I may be wrong on certain things about it, but it can't hurt
> to learn. :-)
>
--- End Message ---
--- Begin Message ---
Woudn't the capacitors have the same stored energy at -2.5 V as +2.5 V? If
they started at + 2.5V, you would have to drive the current back into them
to get them to go negative, and it would take all the energy you got out of
them as they went from +2.5 V to 0V. ( plus a little more, of course, due to
losses)
After all, the energy stored in a capacitor is 1/2 C*Vsquared., so it would
be the same regardless of the polarity of the voltage. Or, am I missing
something here?
Phil Marino
Eventual Electric Echo
Mark Hanson wrote:
> I was told by Maxwell that ultracaps are non-polarized and don't
> care if they are reversed.
Please check on that! The ones I am familiar *are* polarity sensitive,
and fail if reversed.
If Maxwell's are *not* polarity sensitive, and work equally well with
either polarity, then they can effectively double the energy they can
store by using them in a bipolar circuit (take them from +2.5v to
-2.5v).
--
"Never doubt that the work of a small group of thoughtful, committed
citizens can change the world. Indeed, it's the only thing that ever
has!" -- Margaret Mead
--
Lee A. Hart 814 8th Ave N Sartell MN 56377 leeahart_at_earthlink.net
_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE!
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
--- End Message ---
--- Begin Message ---
maybe this would be more exact:
without grip, horsepower is nothing.
Philippe
Et si le pot d'échappement sortait au centre du volant ?
quel carburant choisiriez-vous ?
http://vehiculeselectriques.free.fr
Forum de discussion sur les véhicules électriques
http://vehiculeselectriques.free.fr/Forum/index.php
----- Original Message -----
From: "Philippe Borges" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 7:53 PM
Subject: Re: The first EV sports car
> I suppose the Tzero can beat them in short drag race because it use
traction
> control...
> do sport ICE cars have it ?
>
> a french goodyear TV publicity said :
> without traction horsepower is nothing....
> :^)
>
> Philippe
>
> Et si le pot d'échappement sortait au centre du volant ?
> quel carburant choisiriez-vous ?
> http://vehiculeselectriques.free.fr
> Forum de discussion sur les véhicules électriques
> http://vehiculeselectriques.free.fr/Forum/index.php
>
>
> ----- Original Message -----
> From: "John Westlund" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, September 30, 2004 8:16 AM
> Subject: Re: The first EV sports car
>
>
> > >John, where are you getting these stats? Take it >from me,
> > getting a street legal
> > >electric
> > >car into the 12's is no small task. Getting a >production
> > based, all steel car
> > >with real
> > >windows, real bumpers, real doors, and a real roof, >to run
> > in the 12's let alone
> > >11's, is
> > >very hard to do.
> >
> > I was quoting Chris Dixon's article in the NY Times.
> >
> > "What will a Tzero buyer get?
> >
> > A car that, from zero to 100 and through the quarter mile,
> > will run with, or
> > beat, the $281,000 Lamborghini Murciélago, the $224,000
> > Ferrari 575M
> > Maranello or the $440,000 Porsche Carrera GT."
> >
> >
>
http://travel2.nytimes.com/mem/travel/article-page.html?res=9B01E3DC123AF93AA2575AC0A9659C8B63
> >
> > The article may be wrong, but if it is viewed as a correct
> > source at first glance, then given what 575Ms, Murceilagos,
> > and Carrera GTs pull, you could say it is somewhere in the
> > high 11s, low 12s. I have always wondered where Chris Dixon
> > got that stat from, but maybe I made an error in assuming it
> > to be correct. The Murceilago pulls high 11s alone. If the
> > TZero can run with as the article claims and if the article
> > is correct, I'd assume at slowest the TZero would perform
> > well into the 12s.
> >
> > Just my guess.
> >
> > I have absolutely no doubts about the difficulty of getting
> > an EV to even go below the 14s. I certainly forsee
> > difficulty with my future project of even getting below the
> > 15s if I go everything right.
> >
> > I certainly have not found any time slips of the TZero, and
> > I'm with you there. I'd like to see that NY Times writer
> > present them. ;)
> >
> > >I'd like to see a real car with their technology >poured
> > into it. A small
> > >production car made like other cars on the road, a >car
> > that passes all standards
> > >other
> > >cars must pass, a car with functioning doors and all >the
> > other expected
> > >features...then
> > >tout what 'this' car can do. For me, this would be >far
> > more impressive
> > >than what the current 'car' does. Imagine how the >general
> > public would respond
> > >when seeing
> > >a comparison of say a Toyota Corolla XRS, a spunky >boy
> > racer 170 hp sedan with
> > >0-60 in 7.1
> > >seconds and a 1/4 mile ET of 15.8, to the 230 hp >electric
> > Corolla EV with 0-60
> > >in the low
> > >5 second range, a 1/4 mile ET in the mid 13's, and a
> > >never-have-to-go-to-the-gas-station
> > >range of 200-230 miles! Do you have any idea how >many
> > eyebrows this would raise?
> >
> > I completely agree with you on the point of using an actual
> > car, not because that sort of car appeals to me(I'm more of
> > a fan of tiny impractical toys myself), but for the very
> > reason you stated. Getting a consumer interested in EVs by
> > showing them as practical. Imagine, say, a modernized
> > version of a Plymouth Fury, only fully electric, much more
> > aero and lighter than the original, similar seating room,
> > nice, smooth ride, and at least 200 horsepower on tap.
> > Perhaps a nice real(even in bad weather) range of 180-220
> > miles. Seats 6, has air conditioning, heating, airbags in
> > all the desired places, television set with DVD player, ect.
> > THAT would really get people attracted to EVs, along with
> > throwing them in with a sort of musclecar stigma, especially
> > if it could accelerate from 0-60 faster than the classic
> > hemi musclecars.
> >
> > As much as we disagree(maybe?) on the validity of 'scare
> > stories' some environmentalists have used(wherin I see many
> > of the issues they bring up are legitamate), I believe your
> > approach is the most valid at getting EVs accepted into the
> > main stream. People will have to want them, not because they
> > are told they need to adopt them, but because they actually
> > see them as desirable, fun, and see certain pluses over
> > gasoline cars. Forcing them on people won't work, especially
> > when people don't know much about them. I heavily appreciate
> > what you have done for EVs, and your Blue Meanie does a
> > great demonstration of the things the non-EV educated auto
> > owner wishes to see any car have. I cannot wait for you to
> > get a lithium pack in that thing. The sound system really
> > does the trick at getting attention and acceptance, I think!
> >
> > Your Crolla idea would have all the ricers, that specific
> > group of who I wish to eventually embarass with an electric
> > Triumph ;-), in an uproar, if not an outright state of
> > shock. I'd certainly be impressed at such a car as you have
> > in mind. Just imagine giving people rides in such a car as
> > that EV Corolla you have in mind. :-)
> >
> > I think the technology is there, or at least on the verge of
> > being there, for a viable replacement to the IC engine with
> > few compromises. The hurdles to overcome are looking more
> > and more like ones of either money(as in start up capital
> > for pilot production) or in general production volume. Lets
> > take the Jester EV, for instance. www.evuk.co.uk did a few
> > articles on this car, and the owner claims he could get this
> > 150+ mile range EV to sell at a profit with about a $30,000
> > price tag, in production volumes of < 50 a year. It may not
> > at all be practical, and again, is a kit car of the tackiest
> > variety with little on looks and utility, but just seeing
> > that claim says something about how far this technology has
> > progressed and hints at its viability (
> >
>
http://web.archive.org/web/20040213225920/http://www.evuk.co.uk/news/index.html
> > ). There is also a study on the merits of BEVs vs. Fuel
> > Cells, and using stats from at least 5 years ago, it came to
> > the conclusion that a drivetrain and battery system Honda
> > Civic-like EV with 130 or so horsepower and a 300 mile range
> > was possible in mass production for about $20k (
> > http://www.evuk.co.uk/EAVES_BEV_VS_FCV 040703.pdf ). Both
> > the claim of Greener Energy about the Jester and this study
> > should be taken with a grain of salt, but I think they say
> > something of merit, no matter how small, about the state of
> > this technology.
> >
> > If only folks like you had a bunch of money to burn and if
> > only a managemnt system for Li ions were mass produced, I am
> > certain we may be seeing some conversions on the road that
> > do most everything an IC car does, perhaps then some. I'm
> > eagerly awaiting certain folks on this list to convert their
> > Honda Insights to pure EVs and try lithium packs in them
> > with full functioning BMS systems for blistering
> > acceleration and ~200 miles range.
> >
> > I hope you certainly comment on this. I love discussing and
> > thinking about examples and implications of this technology.
> > I may be wrong on certain things about it, but it can't hurt
> > to learn. :-)
> >
>
--- End Message ---
--- Begin Message ---
You mean the shaft hole, but not the circular trough that the motor face
ridge fits into (in the motor adapter)?
Rich Rudman wrote:
Yes. They have a C Face.
Most EVers don't use it..... But it's there, and WE should since it's the
designed mothod for installing the motor. Most of us mill out the hole and
never micro machine the C-face circle. We should it's a much stouter install
that way.
----- Original Message -----
From: "Eric Poulsen" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 8:28 AM
Subject: ADC Motors: C-Face?
Are ADC motors c-face mountable?
--- End Message ---
--- Begin Message ---
Mike if you look really close at a AvDc 8 or 9 there is a stepped circle the
IS a C face. Goodenough for most is just using the bolts, Best is using the
bolts and having the C-face take up some of the Bearing support forces that
it is meant to.
AKA bolts are nice for 500 amps. Use the C-Face and the bolts for 1000 amps
and up.
----- Original Message -----
From: "Electro Automotive" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 10:25 AM
Subject: Re: ADC Motors: C-Face?
> At 08:28 AM 9/30/04 -0700, you wrote:
> >Are ADC motors c-face mountable?
>
> The ADC motor does not have a c-face per se. A c-face locates on an 8.5"
> O.D. The ADC locates on either a 4" diameter (for 9" motor) or 3.25"
> diameter (for 8" motor) projection on the face of the drive end bell. Our
> adaptor spacer rings bolt to the drive end of the motor to make it look
> like a c-face, which is what the Prestolites had, which were the motors we
> were using long ago, when we started doing adaptors.
>
> Both the 8" and the 9" motors can be mounted, using the four 3/8"-16 holes
> in the drive end with no other support needed, a la VW Bug. In most
> vehicles, however, the overall motor/transmission mounting setup expects
> and requires some support on the far end of the motor. That is the sole
> reason ADC includes the holes on that end of the motor. If you use the
> mounting holes provided on both ends of the motor, no cradle is needed.
>
> Mike Brown
>
>
> Electro Automotive POB 1113 Felton CA 95018-1113 Telephone 831-429-1989
> http://www.electroauto.com [EMAIL PROTECTED]
> Electric Car Conversion Kits * Components * Books * Videos * Since 1979
>
--- End Message ---
--- Begin Message ---
No,
Machining the hole that the motor nose pokes into. If that is a nice
tight fit, like Ice trannies use to locate thier engines, that nice circle
helps support the motor output bearing.
The nose of the motor(with the C-Face machined circle) IS supposed to take
all the forces reacted from the drive train. The 4 bolts are just to keep it
snug in that hole. That ring of solid Aluminum is many times stronger that
just the bolts and the friction that the clamping forces they make create.
That's why industrial C-Face mounting concepts were invented. The bolts
don't have to be made out of Grade 8 steel. Most of (including me) rely on
the bolts only, but that is NOT the best solution.
You will note that the Ice car manufactures use alignment pins AND bolts,
But don't use C-faces. There is a reason for that.
So if you are doing a Good adpter plate, you should design in the C-Face to
help the motor live longer, and to keep it aligned under all stress loads.
----- Original Message -----
From: "Philip Marino" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 10:25 AM
Subject: Re: ADC Motors: C-Face?
> What and where is the "C face"? Mill out what hole??
>
> And, are you talking about machining the motor mounting surfaces?
>
> Phil
> >
> >Yes. They have a C Face.
> >Most EVers don't use it..... But it's there, and WE should since it's the
> >designed mothod for installing the motor. Most of us mill out the hole
and
> >never micro machine the C-face circle. We should it's a much stouter
> >install
> >that way.
> >
> >
> >----- Original Message -----
> >From: "Eric Poulsen" <[EMAIL PROTECTED]>
> >To: <[EMAIL PROTECTED]>
> >Sent: Thursday, September 30, 2004 8:28 AM
> >Subject: ADC Motors: C-Face?
> >
> >
> > > Are ADC motors c-face mountable?
> > >
> >
>
> _________________________________________________________________
> FREE pop-up blocking with the new MSN Toolbar - get it now!
> http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/
>
--- End Message ---
--- Begin Message ---
M.G. wrote:
This voltage clamper. Would it act like a zener diode?If so where could
I find an example of such a circuit?
Mike G.
In my ACRX:
http://www.metricmind.com/ac_honda/images/clamper.jpg
Feel free to try it. Schematic symbols are displayed
according to Euro DIN standards (my CAD default), but
I suppose it is clear what they are.
The page in general (sorry, a bit outdated):
http://www.metricmind.com/ac_honda/bms.htm
--
Victor
'91 ACRX - something different
--- End Message ---
--- Begin Message ---
Lee Hart wrote:
No; that is correct. Your 39 ohm resistors make the capacitors appear to
draw a "fixed" current (at the desired voltage). When you include the
effect of capacitor leakage current, the 39 ohm 1% resistors act like 37
ohm 10% resistors. Thus, the voltages you get from each current
transformer will match within 10%.
Yes, exactly, it is good way to look at it. So I have a balancer to
about 10% accuracy for the total cost parts of about $3.
Note, that I could just as easy make it 5% accurate by picking
20 Ohm resistors. Or better (at the expense of wasted energy).
The cost is the same.
10% seemed to me the best compromise overall.
--
Victor
'91 ACRX - something different
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----- Original Message -----
From: "Andre Blanchard" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 10:33 AM
Subject: RE: ADC Motors: C-Face?
> Micro machine?? Nothing on a motor mount fits into that category of
> machining. :)
>
> Anything over ±0.0002 is just everyday stuff around here.
>
> Thanks,
> Andre' B. Clear Lake Wis.
>
Uhmmmm Ok
It has to be better than a Sawsall and hacksaw and file.....
That sound better???
It sounds like you know what proper interfearance is.
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--- Begin Message ---
Here is a simple circuit that would swing the caps from +36 volts to -36
volts. Just flip the switch from charge to discharge.
_________________________
_|_ +36V |
| + | |
|12V|BAT |
|___| |
_|_ |
| + | |
|12V|BAT |
|___| |
_|_ |
| + | |
|12V|BAT |
|___| | Charge Cap
| Caps
|---||-||-||-||-||-||---\ Switch
_|_ \
| + | | Discharge
|12V|BAT |
|___| |
_|_ |
| + | ___|___
|12V|BAT | |
|___| | Load |
_|_ | |
| + | |_______|
|12V|BAT |
|___| |
|_________________________|
-36V
Thanks,
Andre' B. Clear Lake Wis.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Philip Marino
Sent: Thursday, September 30, 2004 1:52 PM
To: [EMAIL PROTECTED]
Subject: Re: Non-Polarized ultracaps - double the energy?
> Woudn't the capacitors have the same stored energy at -2.5 V as +2.5 V?
> If
> they started at + 2.5V, you would have to drive the current back into them
> to get them to go negative, and it would take all the energy you got out
> of
> them as they went from +2.5 V to 0V. ( plus a little more, of course, due
> to
> losses)
>
> After all, the energy stored in a capacitor is 1/2 C*Vsquared., so it
> would
> be the same regardless of the polarity of the voltage. Or, am I missing
> something here?
>
> Phil Marino
> Eventual Electric Echo
>
> >Mark Hanson wrote:
> > > I was told by Maxwell that ultracaps are non-polarized and don't
> > > care if they are reversed.
> >
> >Please check on that! The ones I am familiar *are* polarity sensitive,
> >and fail if reversed.
> >
> >If Maxwell's are *not* polarity sensitive, and work equally well with
> >either polarity, then they can effectively double the energy they can
> >store by using them in a bipolar circuit (take them from +2.5v to
> >-2.5v).
> >--
> >"Never doubt that the work of a small group of thoughtful, committed
> >citizens can change the world. Indeed, it's the only thing that ever
> >has!" -- Margaret Mead
> >--
> >Lee A. Hart 814 8th Ave N Sartell MN 56377 leeahart_at_earthlink.net
> >
_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE!
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
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--- Begin Message ---
Emil Naepflein wrote:
Victor provided such a circuit:
http://www.metricmind.com/ac_honda/images/clamper.jpg
You can trim the voltage. If you would like to use such a circuit to
regular lead acid batteries you can even add temperatur compensation by
adding a PTC KTY81-110.
Emil
Make sure the temp sensor is away from the heat sink.
I could easily replace one of voltage divider resistors
with thermistor making it temp compensated, but remote
mounting makes more trouble than the result worth.
In my case these will be replaced with BMS modules
with integrated clamper real soon; knowing it I didn't
bother with temp compensation now.
--
Victor
'91 ACRX - something different
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Emil Naepflein wrote:
This would be a good question addressed to the manufacturer. ;-)
Emil
If you short charged capacitor it will ise internal interconnects
as "fuse". Nesscap 5kF capacitor can dish out 4000A. Not sure
about Max, but in my case such a modes are not expected.
I'm not drag racing...
May be Mark Ward can tell more about Max's caps.
Mark?
--
Victor
'91 ACRX - something different
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--- Begin Message ---
Visitors are fast catching on to the fact that with these second cousins of the Smart
car, thankfully blessed with automatic transmission, they can sidle up to the Pantheon
or
take spin around the Trevi fountain without the expense of a taxi. Prices range from
32 -
50 euro ($39-61USD) per day, comparable to compact rental car rates, but microcars can
be
rented by the day making them the choice for Romans on shopping jaunts. Electric cars
can
go 100 chilometers of in-town driving -- they're not allowed on the autostrada --
before
having to be recharged.
http://www.zoomata.com/modules.php?name=News&file=article&sid=1075
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
--- End Message ---
--- Begin Message ---
Mark Hanson wrote:
A salesman at the show (EDTA Orlando) last week in the Maxwell booth (I
forget his name) mentioned that when I brought it up. He went further to say
that they can be installed either way at the factory and charged in either
direction. (Maybe he was just kidding.)
May be he was. MAX caps have polarity clearly stamped on them.
http://www.metricmind.com/ac_honda/images/cap_zoom.jpg
--
Victor
'91 ACRX - something different
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--- Begin Message ---
mark ward wrote:
Intially Ultracaps are unpolarized-however after first use they become polarized.
They are all tested at Maxwell-hence they become polarized-and for this reason they
have polarity indications stamped on them. Dont connect them backwards!
Ah, all clear now, thank you Mark.
--
Victor
'91 ACRX - something different
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Gas is too cheap if anybody seriously considers
using a pickup of this size to haul an ATV.
http://www.internationaldelivers.com/site_layout/severe/cxt.asp
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On Thu, 30 Sep 2004 16:53:02 -0400, Markus L <[EMAIL PROTECTED]> wrote:
> Gas is too cheap if anybody seriously considers
> using a pickup of this size to haul an ATV.
>
> http://www.internationaldelivers.com/site_layout/severe/cxt.asp
Like that's actually intended for hauling or towing anything - it
doesn't even have a tow hitch as standard equipment. It's just
another step along the scale from the Ford Expedition and the Humvee.
But hey, I'm sure you can get a tax break on it, and like you said,
gas is too cheap.
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Read an online article on this beast a few days ago. They're actually
targeting small businesses and contractors that would have a use for it,
although the "show off" factor of having the biggest truck is also involved.
Maybe if they replaced that International with a good Cummins diesel it'd
actually be worth something. :-)
-----Original Message-----
From: Evan Tuer [mailto:[EMAIL PROTECTED]
Sent: Thursday, September 30, 2004 5:28 PM
To: [EMAIL PROTECTED]
Subject: Re: Gas is too cheap
On Thu, 30 Sep 2004 16:53:02 -0400, Markus L <[EMAIL PROTECTED]> wrote:
> Gas is too cheap if anybody seriously considers
> using a pickup of this size to haul an ATV.
>
> http://www.internationaldelivers.com/site_layout/severe/cxt.asp
Like that's actually intended for hauling or towing anything - it doesn't
even have a tow hitch as standard equipment. It's just another step along
the scale from the Ford Expedition and the Humvee.
But hey, I'm sure you can get a tax break on it, and like you said, gas is
too cheap.
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--- Begin Message ---
Philip Marino wrote:
> Wouldn't the capacitors have the same stored energy at -2.5 V
> as +2.5 V?
Yes; my point was that the change in energy from +X to -X is twice as
much as from +X to 0. There are times that it may be beneficial to use
this full range, even though you are never storing 2X the energy.
--
"Never doubt that the work of a small group of thoughtful, committed
citizens can change the world. Indeed, it's the only thing that ever
has!" -- Margaret Mead
--
Lee A. Hart 814 8th Ave N Sartell MN 56377 leeahart_at_earthlink.net
--- End Message ---
--- Begin Message ---
White Zombie has the same torque and horsepower! Maybe John Wayland
should weigh down White Zombie with about 12,000 pounds of lead, to
make the weights the same, and have a pulling contest against this
new truck.
=====
_______________________________
Do you Yahoo!?
Declare Yourself - Register online to vote today!
http://vote.yahoo.com
--- End Message ---
--- Begin Message ---
I fixed the TEVan tonight.
A PNP transistor that is 1mmX2mm (SOT23) drives
the small MOSFET's that gate on the IGBT's was
blown when the main IGBT's blew.
We'll see how well it does tomorrow when I drive 44
miles to work (The test drive tonight was only 2
miles).
I also fixed the 400A Cursit controller on the golf
cart. The 6 pin logic connector wicked water through
the end cover and corroded the pins on the logic card.
I soldered wires in this time and used a 8" harness to
bring the connections outside of the brick. I used
Dow Corning 3140 silicon for the initial seal and then
Dow 3145 silicon adheasive to seal it up even better.
Hopefully I can get another 6 years of service out of
this (It was 6 years old when the last arrangement
failed). I'm guessing my 'rigging' will last longer
than Cursits sealing of the control.
Now I have to get the GE-Elec trak mower ready for the
snow plowing season. Thanks to David Roden for
providing the snow blade :-).
Maybe someday I can get back to desiging stuff instead
of fixing it!!!
Rod
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[EMAIL PROTECTED] wrote:
http://media.ebaumsworld.com/retro.wmv
That video is a must-see. I like the dingle-arm, personally.
--
--
Martin Klingensmith
http://infoarchive.net/
http://nnytech.net/
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I bought a 1961 Corvair Rampside pickup truck
that was converted to electric by a school in Arizona.
I actually picked it up Thursday of last week, but
then I was off to Woodburn and didn’t have time to do
much with it. Now the fun starts…
It is set up for 96 volts with Trojan batteries
with a Curtis 1231C-77XX, an ADC FB1-4001 and a Lester
09387 96V/12V charger.
I found the charger manual on Lester’s web page.
It states that you shouldn’t use the charger on 110V
unless you have no choice and to do it only
occasionally as this will lead to undercharging and
reduced battery life. The guy I bought it from only
charged it on 110V. What will this do to the
batteries? It’s pulling about 25A off of 220 right
now. That’s about 3 times as fast as the Jet 007 would
charge off of 110 with the K&W. I can’t wait to
install the PFC-20 in the Corvair.
I want to bring the battery pack up to 120V (I
wanted to go to 144V but apparently you need a Curtis
1231C-86XX for that) How do I determine the state of
the current set of batteries? I’ll check the
individual battery voltages and the specific gravity
of them as well. The problem is as a newbie I don’t
have anything to reference these numbers to. I was
also wondering where one buys used batteries of a
similar condition? A local golf cart shop maybe? Or
should I bite the bullet and replace the whole pack?
The truck is pretty sluggish right now, I’m not
sure if this is due to weak batteries, or if it’s due
to trying to run a 3,700 lb truck around on 96V. Will
boosting the pack by 24V give me that much of a boost?
The 007 is @ 120V and doesn’t weigh much less. It
wouldn’t win any awards at the track, but it will run
circles around the Corvair the way things are now.
Final question of the day, the motor is an ADC
FB1-4001, where would I find a manual for this motor?
I would like to check the brushes at a minimum and
would like to know what to check for. What’s the
difference between the 4001 and the 4001A? (does that
count as another question?)
Thanks for the info!
TiM
_______________________________
Do you Yahoo!?
Declare Yourself - Register online to vote today!
http://vote.yahoo.com
--- End Message ---
--- Begin Message ---
I spent yesterday concocting a pot setup that works with the original Lambretta
throttle - it worked, if a bit crude. Today I played with front and rear brake
cables, but had to disable the front one because it interfered with the
throttle. By this afternoon, I had twisted together all the right wires, and
took off around the block.
It reminded me of the eGPR test ride I took at SVEVA's rally - zoom! Seems the
rear tire was 20psi or so, and I had to lean forward to prevent the front from
getting too light. I pumped both tires over 40psi, and enlisted my son as a
passenger to get the load up -- he still got the willies from the g-forces, so
I figured that's plenty of power for me.
I took off solo to my wife's job, but 1/2mi out, the power (and regen) went out.
I had taken a page from the Madman, riding with regen as my major braking
effect, assuming the rear brakes would be back-up. Bad idea - seems I left too
much play for the pads to ever hit the drum, so I was left doing a safety coast
until I could use the Flintstone brakes.
Turns out my homemade throttle pot lost its high and low stops, so when I turned
down too far, it went into HPD. I opened the ignition wires, reattached them,
and I was good to go. At home, it happened again, and when I got it going
again, response was more like "on and off" than anything useable. It was
obvious the pot was shot, so I ripped out yesterday's handiwork and have
decided to get something like a Magura, or whatever fits.
Plenty more to do, but no more rides until I get a replacement for the throttle
(and brakes that work!)
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--- Begin Message ---
Nope.
There is a 3 to 4 inch ring that protrudes from the face of the bolt plane.
This bigger ring is where the real strength is. On 8s it's not really clear,
on 9s it's a major jump in the casting.
Do we need Digi shots????
This detail is available on the EvParts website on the face Blue print
drawings.
I am sure KTA and other also have it.
----- Original Message -----
From: "Eric Poulsen" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 12:12 PM
Subject: Re: ADC Motors: C-Face?
> You mean the shaft hole, but not the circular trough that the motor face
> ridge fits into (in the motor adapter)?
>
> Rich Rudman wrote:
>
> >Yes. They have a C Face.
> >Most EVers don't use it..... But it's there, and WE should since it's the
> >designed mothod for installing the motor. Most of us mill out the hole
and
> >never micro machine the C-face circle. We should it's a much stouter
install
> >that way.
> >
> >
> >----- Original Message -----
> >From: "Eric Poulsen" <[EMAIL PROTECTED]>
> >To: <[EMAIL PROTECTED]>
> >Sent: Thursday, September 30, 2004 8:28 AM
> >Subject: ADC Motors: C-Face?
> >
> >
> >
> >
> >>Are ADC motors c-face mountable?
> >>
> >>
> >>
> >
> >
> >
> >
>
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