EV Digest 5058
Topics covered in this issue include:
1) Re: Otmars new home
by Victor Tikhonov <[EMAIL PROTECTED]>
2) Re: I want to build a PWM DC motor controller
by Doug Weathers <[EMAIL PROTECTED]>
3) White Zombie in 5th
by Mike & Paula Willmon <[EMAIL PROTECTED]>
4) Re: White Zombie in 5th
by Victor Tikhonov <[EMAIL PROTECTED]>
5) RE: a DC controller's power stage schematic needed
by "Dewey, Jody R ATC (CVN75 IM3)" <[EMAIL PROTECTED]>
6) Re: a DC controller's power stage schematic needed
by Victor Tikhonov <[EMAIL PROTECTED]>
7) RE: MR2 Power Steering Pump - need 12V, 100A controller
by "Dewey, Jody R ATC (CVN75 IM3)" <[EMAIL PROTECTED]>
8) Re: MR2 Power Steering Pump - need 12V, 100A controller
by Evan Tuer <[EMAIL PROTECTED]>
9) Re: White Zombie in 5th
by Jim Husted <[EMAIL PROTECTED]>
10) Re: Otmars new home
by Jim Husted <[EMAIL PROTECTED]>
11) Re: Otmars new home
by Dave Cover <[EMAIL PROTECTED]>
12) Re: White Zombie almost in 4th place
by Jim Husted <[EMAIL PROTECTED]>
13) Re: White Zombie almost in 4th place
by Aaron NMLUG-EV <[EMAIL PROTECTED]>
14) RE: White Zombie almost in 4th place
by Tim Humphrey <[EMAIL PROTECTED]>
15) Re: Otmars new home
by "Bob Rice" <[EMAIL PROTECTED]>
16) White Zombie in 4th place
by "Roderick Wilde" <[EMAIL PROTECTED]>
17) Re: White Zombie almost in 4th place
by "jerryd" <[EMAIL PROTECTED]>
18) Psychological Effect of Drag Times
by "Roderick Wilde" <[EMAIL PROTECTED]>
19) Re: White Zombie in 4th place
by Ralph Merwin <[EMAIL PROTECTED]>
20) Re: White Zombie almost in 4th place, Freedom in First<g>!
by "Bob Rice" <[EMAIL PROTECTED]>
21) Re: White Zombie in 4th place
by Jim Husted <[EMAIL PROTECTED]>
22) Re: Psychological Effect of Drag Times
by "Bob Rice" <[EMAIL PROTECTED]>
23) Re: White Zombie in 4th place
by "Roderick Wilde" <[EMAIL PROTECTED]>
24) Is it bad to spin backwards?
by "Mark Hanson" <[EMAIL PROTECTED]>
25) Re: Motor speed?
by Lee Hart <[EMAIL PROTECTED]>
26) Re: AIR Lab EWS (was Re: battery monitor suggestions)
by Lee Hart <[EMAIL PROTECTED]>
27) RE: Motor speed?
by Tim Humphrey <[EMAIL PROTECTED]>
--- Begin Message ---
Jim Husted wrote:
Hey Victor, all
...
Being that I have yet to complete an EV for myself having DC experts
so close is truly exciting for me...
Only DC experts? ;-) So no BBQ for me? :-)
(kidding. But I don't consider myself an expert in anything,
including AC. So still no BBQ...).
Victor
--- End Message ---
--- Begin Message ---
On Jan 4, 2006, at 10:47 PM, Stefan Peters wrote:
Just to stir the pot a bit, here is what I'm currently soldering
together/writing software for (in the prototype phase right now):
http://www.evforge.net/forum/attachments/Power%20Network%5B13%5D.jpg
Very cool! When I first started thinking seriously about building an
EV, I had in mind a modular, distributed power system (I'm a computer
network guy too). You might find some mostly incoherent posts from me
on the subject in the archives. For example, here, at the bottom of
the page:
<http://www.mail-archive.com/[email protected]/msg04460.html>
At the time I didn't know about the BatPack system, or the Tango's
distributed chargers.
Any thoughts before it gets powered up for the first time on my
birthday (27th). I will be testing each module separately and with
much lower power levels before that, of course...
Just some questions.
1) How will this scale? My car has twice that many batteries.
2) How flexible will it be? Could it for example deal with batteries
of different chemistries and capacities in the same pack? (Seems like
it's just a matter of sofware.)
3) How easy would it be to add modular charging to the package?
4) Where can you stick the DC/DC converter?
5) (related question) How about Lee Hart Battery Balancer functionality?
Anyway, I hope your project goes well, and I really hope that it
eventually results in hardware I can buy.
--
Doug Weathers
Bend, OR, USA
<http://learn-something.blogsite.org/>
--- End Message ---
--- Begin Message ---
I voted the White Zombie into tie for 5th. Someone put him over :-)
I'm stoked for you guys. I'm watching the EV's march up by 10's of votes and
the leaders up 1 every once in a while.
When is the cutoff for voting for the February Featured Car of the Month?
--- End Message ---
--- Begin Message ---
I just voted for all 3 as well, and noticed that although WZ is 5th,
it has second best 1/4 mile ET among all above it - only Mercedes-Benz
has less than 12 sec time (and it isn't first on the list either).
I do realize people don't vote based on ET times alone.
Congrats John! You must be jumping up and down now... :-)
Victor
--
'91 ACRX - something different
Mike & Paula Willmon wrote:
I voted the White Zombie into tie for 5th. Someone put him over :-)
I'm stoked for you guys. I'm watching the EV's march up by 10's of votes and
the leaders up 1 every once in a while.
When is the cutoff for voting for the February Featured Car of the Month?
--- End Message ---
--- Begin Message ---
How about copying the Curtis Power Stage for the 1220B? It is pretty
straight forward. You wouldnt have to use 35 Mosfets for that level of
power. Each one carries 18 amps so maybe 3 or 4 of them for 100V 20A.
-----Original Message-----
From: Victor Tikhonov [mailto:[EMAIL PROTECTED]
Sent: Wednesday, January 04, 2006 6:48 PM
To: [email protected]
Subject: a DC controller's power stage schematic needed
Experts,
A friend of mine asked for a power stage implementation for
a DC motor controller to be used in a robot application.
He has uP controlling everything and needs to interface it
to something capable of running a reversible DC motor (perhaps
in H-bridge arrangement then) at about 100V max and 20A max
(not simultaneously). I think he uses either series wound
or PM DC motor, few hundred watts. Speed control is needed,
not position or torque.
I don't want to reinvent a wheel, so if someone has known
working controller schematic (just a power stage is OK),
please email me of list or point me to the source.
Any help appreciated in advance,
Victor
--- End Message ---
--- Begin Message ---
It has to be reversible, so in H-bridge arrangement.
AFAIK, Curtis isn't made that way.
Victor
Dewey, Jody R ATC (CVN75 IM3) wrote:
How about copying the Curtis Power Stage for the 1220B? It is pretty
straight forward. You wouldnt have to use 35 Mosfets for that level of
power. Each one carries 18 amps so maybe 3 or 4 of them for 100V 20A.
--- End Message ---
--- Begin Message ---
You could make a controller but realistically wouldnt a switch and a relay
work just as well? Really on a small car power steering is only needed when
parking. You could just have a switch on the dash labeled "Parking Assist
pump" and switch it on when you were going slow.
-----Original Message-----
From: Adrian DeLeon [mailto:[EMAIL PROTECTED]
Sent: Wednesday, January 04, 2006 4:36 PM
To: [email protected]
Subject: MR2 Power Steering Pump - need 12V, 100A controller
Where I can find a reasonably priced controller for running a Toyota MR2
EHPS power steering pump? I want to use the RPM signal from a Zilla to
vary the pump speed from 100% to 0% as the car goes from 0 to 20MPH (or 0%
to 100% as the steering wheel is turned from center to lock). This would
reduce steering assist when it is not needed and save 12V auxilliary power.
The pump will not be damaged if run continuously, so I'm tempted to build
one myself. The pump turns on with the ignition switch and has proper
fusing, so failure of the controller wouldn't be catastrophic.
Does anyone know how much juice this pump uses when there isn't much
steering demand? I know it uses 75-80A maximum, what about when the wheels
are straight? I certainly don't want to tackle this project if it will be
serious overkill.
The MR2 EHPS pump has 2 connectors:
Connector 1: Power, Ground - heavy duty wires for 50+ Amp current
Connector 2: NC switch to motor brushes (2 pins), wire connected
internally to the Power line
I looked up the wiring diagram for a 1992 MR2 at my local library - very
interesting...
(View with fixed width fond)
+12V----(ABS fuse)-----------------+----------------+
| |
[EHPS computer module ] |
| | | | | | |
| | | /-----------\ | |
| | | |EHPS Driver| | |
| | | |circuit | | |
| | | \-----------/ | |
| | | | | | |
| | | | | | |
| | | | |_____/ NO \_|
| | | | | \relay/
| | | | |
| | | |(-)|(+)
/----------------------\
| | | | | | |
| | | | | +---+ |
| | | | | | | |
| | | | [MOTOR] | |
| | | | | |
| | | +-----------+ |
| | | |
|[NC Switch] |
| |
| EHPS Pump Assembly |
\----------------------/
The EHPS computer has inputs from a steering wheel encoder and the main
ICE computer. It is programmed to reduce steering assist with vehicle
speed, giving ZERO assist above 85MPH. From the diagram above, the EHPS
computer can also monitor the driver circuit and engage the NO relay to
give 100% steering assist if the driver circuit fails.
The NC switch opens when two of the EPHS motor brushes wear down.
Adrian
--- End Message ---
--- Begin Message ---
Good, cheap 12V controller here:
http://www.4qd.co.uk/prod/1qd.html
I just use a switch and relay on my van's power steering pump. I
prefer it switched off all the time, my girlfriend can switch it on
for parking :)
Regards
Evan
On 1/4/06, Adrian DeLeon <[EMAIL PROTECTED]> wrote:
> Where I can find a reasonably priced controller for running a Toyota MR2
> EHPS power steering pump? I want to use the RPM signal from a Zilla to
> vary the pump speed from 100% to 0% as the car goes from 0 to 20MPH (or 0%
> to 100% as the steering wheel is turned from center to lock). This would
> reduce steering assist when it is not needed and save 12V auxilliary power.
>
> The pump will not be damaged if run continuously, so I'm tempted to build
> one myself. The pump turns on with the ignition switch and has proper
> fusing, so failure of the controller wouldn't be catastrophic.
>
> Does anyone know how much juice this pump uses when there isn't much
> steering demand? I know it uses 75-80A maximum, what about when the wheels
> are straight? I certainly don't want to tackle this project if it will be
> serious overkill.
>
> The MR2 EHPS pump has 2 connectors:
>
> Connector 1: Power, Ground - heavy duty wires for 50+ Amp current
> Connector 2: NC switch to motor brushes (2 pins), wire connected
> internally to the Power line
>
> I looked up the wiring diagram for a 1992 MR2 at my local library - very
> interesting...
>
> (View with fixed width fond)
>
> +12V----(ABS fuse)-----------------+----------------+
> | |
> [EHPS computer module ] |
> | | | | | | |
> | | | /-----------\ | |
> | | | |EHPS Driver| | |
> | | | |circuit | | |
> | | | \-----------/ | |
> | | | | | | |
> | | | | | | |
> | | | | |_____/ NO \_|
> | | | | | \relay/
> | | | | |
> | | | |(-)|(+)
> /----------------------\
> | | | | | | |
> | | | | | +---+ |
> | | | | | | | |
> | | | | [MOTOR] | |
> | | | | | |
> | | | +-----------+ |
> | | | |
> |[NC Switch] |
> | |
> | EHPS Pump Assembly |
> \----------------------/
>
> The EHPS computer has inputs from a steering wheel encoder and the main
> ICE computer. It is programmed to reduce steering assist with vehicle
> speed, giving ZERO assist above 85MPH. From the diagram above, the EHPS
> computer can also monitor the driver circuit and engage the NO relay to
> give 100% steering assist if the driver circuit fails.
>
> The NC switch opens when two of the EPHS motor brushes wear down.
>
> Adrian
>
>
--- End Message ---
--- Begin Message ---
Hey All
Just put John in 5th YEAH!
Cya
Jim Husted
Hi-Torque Electric
Mike & Paula Willmon <[EMAIL PROTECTED]> wrote:
I voted the White Zombie into tie for 5th. Someone put him over :-)
I'm stoked for you guys. I'm watching the EV's march up by 10's of votes and
the leaders up 1 every once in a while.
When is the cutoff for voting for the February Featured Car of the Month?
---------------------------------
Yahoo! DSL Something to write home about. Just $16.99/mo. or less
--- End Message ---
--- Begin Message ---
Hey Victor
You know actually I was quite bummed I didn't get to spend any time with you
at Woodburn. I also loved your capacitor burnout. You are deffinantly invited
if / when any BBQ happens. I'd love to learn more about what you're doing on
the flip side. As I stated before DC is just what I know, it is not however
all I can know ; )
Cya
Jim Husted
Hi-Torque Electric
Victor Tikhonov <[EMAIL PROTECTED]> wrote:
Jim Husted wrote:
> Hey Victor, all
...
> Being that I have yet to complete an EV for myself having DC experts
> so close is truly exciting for me...
Only DC experts? ;-) So no BBQ for me? :-)
(kidding. But I don't consider myself an expert in anything,
including AC. So still no BBQ...).
Victor
---------------------------------
Yahoo! DSL Something to write home about. Just $16.99/mo. or less
--- End Message ---
--- Begin Message ---
--- Jim Husted <[EMAIL PROTECTED]> wrote:
> Hey Victor, all
>
> I hope no one took offence to the electric triangle statement.
> Anyway I meant no disrespect to all you wonderful EVers who
> live outside the Electric Triangle, Damn it I did it again
> Peace
> Jim Husted
Jim
Nothing to appologize for. You guys have got a great thing going out there, and
we all benefit
from it. (Kinda wish I could move West.) By being so close to each other you
feed and support each
other and keep the momentum going. That's why I have a nice Z1k for my
conversion, and I'll bet
dollars to doughnuts my charger will come from out West too. That is, if I ever
get my adapter
plate built...
While we do have a small but enthusiastic EV community in the East (Bob R,
Fortunat, Hump, Chris,
Jerry, etc.), you guys have a big edge for component production. But Florida
may soon counter
balance with EV production of their own. And while I enjoy all the emails about
drag racing in the
Northwest, I also look forward to the ones about cutting grass in the
Southeast. And there's a lot
of EV activity everywhere in between and around the world. Be proud of the fact
that you're taking
part in a good thing. People notice what you guys are doing and appreciate it.
</sappy rant>
Dave Cover
PS: Keep up the good work. I'm looking forward to the brush timing advance
retrofit kit you
develop. If you could start with one for ADC 9 incher, that would be great!
--- End Message ---
--- Begin Message ---
Hey all
On second look I believe someone else got to push WZ to 5th but looking just
now Johns just 6 volts out from 4th already. I believe John said yesterday
that we have all month to get the guys to first, second, and third. The fun
part will come as we determine the pecking order of the 3 EV there, LMAO.
Cya
Jim Husted
Hi-Torque Electric
Mike & Paula Willmon <[EMAIL PROTECTED]> wrote:
I voted the White Zombie into tie for 5th. Someone put him over :-)
I'm stoked for you guys. I'm watching the EV's march up by 10's of votes and
the leaders up 1 every once in a while.
When is the cutoff for voting for the February Featured Car of the Month?
---------------------------------
Yahoo! Photos
Ring in the New Year with Photo Calendars. Add photos, events, holidays,
whatever.
--- End Message ---
--- Begin Message ---
On Thu, 2006-01-05 at 07:08, Jim Husted wrote:
> Hey all
>
> On second look I believe someone else got to push WZ to 5th but looking
> just now Johns just 6 volts out from 4th already. I believe John said
> yesterday that we have all month to get the guys to first, second, and third.
> The fun part will come as we determine the pecking order of the 3 EV there,
> LMAO.
> Cya
> Jim Husted
> Hi-Torque Electric
>
> Mike & Paula Willmon <[EMAIL PROTECTED]> wrote:
> I voted the White Zombie into tie for 5th. Someone put him over :-)
> I'm stoked for you guys. I'm watching the EV's march up by 10's of votes and
> the leaders up 1 every once in a while.
> When is the cutoff for voting for the February Featured Car of the Month?
I'm giving WZ all my votes.
Try to get ONE car of the month into the archive/record section.
If they don't change the voting system... I just need to
choose who to support in February....
--
Aaron Birenboim \ I have an inferiority complex,
Albuquerque, NM, USA \ but its not a very good one.
aaron at birenboim.com \
http://aaron.birenboim.com \
--- End Message ---
--- Begin Message ---
I could be wrong......
But I think the votes carry over month to month, when your car finally hits the
top spot it gets featured and your votes are reset to zero and you start
again....
I could be wrong about that....
Stay Charged!
Hump
For John's White Zombie -
"http://www.dragtimes.com/voteprocess.php?slipID=7484";
For the Matt's Nissan 240SX -
"http://www.dragtimes.com/voteprocess.php?slipID=7382";
For Rod's Maniac Mazda -
"http://www.dragtimes.com/voteprocess.php?slipID=7519";
Original Message -----------------------
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Aaron NMLUG-EV
Sent: Thursday, January 05, 2006 9:15 AM
To: [email protected]
Subject: Re: White Zombie almost in 4th place
On Thu, 2006-01-05 at 07:08, Jim Husted wrote:
> Hey all
>
> On second look I believe someone else got to push WZ to 5th but looking
just now Johns just 6 volts out from 4th already. I believe John said
yesterday that we have all month to get the guys to first, second, and
third. The fun part will come as we determine the pecking order of the 3 EV
there, LMAO.
> Cya
> Jim Husted
> Hi-Torque Electric
>
> Mike & Paula Willmon <[EMAIL PROTECTED]> wrote:
> I voted the White Zombie into tie for 5th. Someone put him over :-)
> I'm stoked for you guys. I'm watching the EV's march up by 10's of
> votes and the leaders up 1 every once in a while.
> When is the cutoff for voting for the February Featured Car of the Month?
I'm giving WZ all my votes.
Try to get ONE car of the month into the archive/record section.
If they don't change the voting system... I just need to choose who to
support in February....
--
Aaron Birenboim \ I have an inferiority complex,
Albuquerque, NM, USA \ but its not a very good one.
aaron at birenboim.com \
http://aaron.birenboim.com \
--- End Message ---
--- Begin Message ---
Hi EVerybody;
Electric Triangle! Hey! I Like that! Gotta start somewhere, Or the
Grants Pass"It's the Climate" As the sign sez, is a beautiful place, maybe
even affordable. Unlike Corrupticut isn't anymore.Makes it easyer to hit up
the EV hot spots when I go West EVery summer?
Hot Spot? Seeya at BBB!?
Bob
----- Original Message -----
From: "Dave Cover" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, January 05, 2006 8:44 AM
Subject: Re: Otmars new home
> --- Jim Husted <[EMAIL PROTECTED]> wrote:
> > Hey Victor, all
> >
> > I hope no one took offence to the electric triangle statement.
> > Anyway I meant no disrespect to all you wonderful EV'ers who
> > live outside the Electric Triangle, Damn it I did it again.
> > Peace
> > Jim Husted
>
> Jim
>
> Nothing to appologize for. You guys have got a great thing going out
there, and we all benefit
> from it. (Kinda wish I could move West.) By being so close to each other
you feed and support each
> other and keep the momentum going. That's why I have a nice Z1k for my
conversion, and I'll bet
> dollars to doughnuts my charger will come from out West too. That is, if I
ever get my adapter
> plate built...
>
> While we do have a small but enthusiastic EV community in the East (Bob R,
Fortunat, Hump, Chris,
> Jerry, etc.), you guys have a big edge for component production. But
Florida may soon counter
> balance with EV production of their own. And while I enjoy all the emails
about drag racing in the
> Northwest, I also look forward to the ones about cutting grass in the
Southeast. And there's a lot
> of EV activity everywhere in between and around the world. Be proud of the
fact that you're taking
> part in a good thing. People notice what you guys are doing and appreciate
it.
>
> </sappy rant>
>
> Dave Cover
>
> PS: Keep up the good work. I'm looking forward to the brush timing advance
retrofit kit you
> develop. If you could start with one for ADC 9 incher, that would be
great!
>
--- End Message ---
--- Begin Message ---
I just voted and pushed "White Zombie" into 4th place. Aaron, you should
note that you can vote every day for all three electrics. The direct URLs
are all on the front NEDRA page at www.nedra.com. We now have two electrics
in the top fifteen with one in number four. How cool is that folks. Thanks
again for all your support. The "Maniac Mazda" is in 30th place and moving
up daily. It would be great if we had three of the top fifteen places.
Roderick Wilde
"Suck Amps EV Racing"
www.suckamps.com
----- Original Message -----
From: "Tim Humphrey" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, January 05, 2006 6:48 AM
Subject: RE: White Zombie almost in 4th place
I could be wrong......> For Rod's Maniac Mazda -
"http://www.dragtimes.com/voteprocess.php?slipID=7519";
Original Message -----------------------
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Aaron NMLUG-EV
Sent: Thursday, January 05, 2006 9:15 AM
To: [email protected]
Subject: Re: White Zombie almost in 4th place
On Thu, 2006-01-05 at 07:08, Jim Husted wrote:
Hey all
On second look I believe someone else got to push WZ to 5th but looking
just now Johns just 6 volts out from 4th already. I believe John said
yesterday that we have all month to get the guys to first, second, and
third. The fun part will come as we determine the pecking order of the 3
EV
there, LMAO.
Cya
Jim Husted
Hi-Torque Electric
Mike & Paula Willmon <[EMAIL PROTECTED]> wrote:
I voted the White Zombie into tie for 5th. Someone put him over :-)
I'm stoked for you guys. I'm watching the EV's march up by 10's of
votes and the leaders up 1 every once in a while.
When is the cutoff for voting for the February Featured Car of the Month?
I'm giving WZ all my votes.
Try to get ONE car of the month into the archive/record section.
If they don't change the voting system... I just need to choose who to
support in February....
--
Aaron Birenboim \ I have an inferiority complex,
Albuquerque, NM, USA \ but its not a very good one.
aaron at birenboim.com \
http://aaron.birenboim.com \
--
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--- End Message ---
--- Begin Message ---
Hi Aaron and All,
Maybe it was me who put him over this
morning but whomever did is great.
I started voting with on one of the first
sets of URL's and could only vote for one per day but
started using Hump's URL's and now can vote for each, each
day. I start my day by voting for them. If a bunch of us do
this, we can get the top few spots by the end of the month.
Let'sgo for it, John and Rod certainly deserv it for their
yrs, decade of hard work so I feel it's the least we can do
for them and help Matt too. So you can vote for them all
without having to favor one.
Here's the URL's that have been sucessful
for me that Hump put up.
Hump
http://www.dragtimes.com/Mazda-RX-7-Timeslip-7519.html
http://www.dragtimes.com/Datsun-1200-Timeslip-7484.html
http://www.dragtimes.com/Nissan-240SX-Timeslip-7382.html
If we do this regularly for the next month we might
get first, second and third place for John, Rod and Matt.
Just checking this for accuracy, it allowed me to
vote again !!
Thanks,
Jerry Dycus
----- Original Message Follows -----
From: Aaron NMLUG-EV <[EMAIL PROTECTED]>
To: [email protected]
Subject: Re: White Zombie almost in 4th place
Date: Thu, 05 Jan 2006 07:14:45 -0700
>On Thu, 2006-01-05 at 07:08, Jim Husted wrote:
>> Hey all
>>
>> On second look I believe someone else got to push WZ to
>5th but looking just now Johns just 6 volts out from 4th
>already. I believe John said yesterday that we have all
>month to get the guys to first, second, and third. The fun
>part will come as we determine the pecking order of the 3
>> EV there, LMAO. Cya
>> Jim Husted
>> Hi-Torque Electric
>>
>> Mike & Paula Willmon <[EMAIL PROTECTED]> wrote:
>> I voted the White Zombie into tie for 5th. Someone put
>> him over :-) I'm stoked for you guys. I'm watching the
>> EV's march up by 10's of votes and the leaders up 1 every
>> once in a while. When is the cutoff for voting for the
>February Featured Car of the Month?
>
>I'm giving WZ all my votes.
>Try to get ONE car of the month into the archive/record
>section.
>
>If they don't change the voting system... I just need to
>choose who to support in February....
>--
>Aaron Birenboim \ I have an inferiority complex,
>Albuquerque, NM, USA \ but its not a very good
>one. aaron at birenboim.com \
>http://aaron.birenboim.com \
>
--- End Message ---
--- Begin Message ---
Yes I know it's a Prom Queen vote but that even more than anything else will
have a strong psychological impact on the gas crowd. Once there are three
electric cars in the top fifteen it will make it appear as if the EV
movement is much bigger than it really is. Kind of like the Praying Mantis
effect when he's on his hind legs or the biker with the high handlebars.
It's all the same illusion. Or is the movement bigger than I think is?
Roderick Wilde
--
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--- End Message ---
--- Begin Message ---
Roderick Wilde writes:
>
> The "Maniac Mazda" is in 30th place and moving
> up daily. It would be great if we had three of the top fifteen places.
Rod,
Does this mean that you're bringing Maniac Mazada out of mothballs? ;-)
Ralph
--- End Message ---
--- Begin Message ---
Hi Jerry;
Me too, just voted today. Vote early and often as they used to say!Trying
to make EV's show up on the Real World's radar. Bet yur busy trying to get
Freedon EV ready for BBB? I know it's a long shot, but if ya can bring
SOMETHING?I dream of a rolling glider for now, or a body blocked aboard a
trailer?Sure would be great. I assume that yur so damn BUSY that you havent
had time to chat much?
Seeya at BBB
Bob
----- Original Message -----
From: "jerryd" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, January 05, 2006 10:14 AM
Subject: Re: White Zombie almost in 4th place
>
>
> Hi Aaron and All,
> Maybe it was me who put him over this
> morning but whomever did is great.
> I started voting with on one of the first
> sets of URL's and could only vote for one per day but
> started using Hump's URL's and now can vote for each, each
> day. I start my day by voting for them. If a bunch of us do
> this, we can get the top few spots by the end of the month.
> Let'sgo for it, John and Rod certainly deserv it for their
> yrs, decade of hard work so I feel it's the least we can do
> for them and help Matt too. So you can vote for them all
> without having to favor one.
> Here's the URL's that have been sucessful
> for me that Hump put up.
>
> Hump
>
> http://www.dragtimes.com/Mazda-RX-7-Timeslip-7519.html
> http://www.dragtimes.com/Datsun-1200-Timeslip-7484.html
> http://www.dragtimes.com/Nissan-240SX-Timeslip-7382.html
>
> If we do this regularly for the next month we might
> get first, second and third place for John, Rod and Matt.
> Just checking this for accuracy, it allowed me to
> vote again !!
> Thanks,
> Jerry Dycus
>
>
> ----- Original Message Follows -----
> From: Aaron NMLUG-EV <[EMAIL PROTECTED]>
> To: [email protected]
> Subject: Re: White Zombie almost in 4th place
> Date: Thu, 05 Jan 2006 07:14:45 -0700
>
> >On Thu, 2006-01-05 at 07:08, Jim Husted wrote:
> >> Hey all
> >>
> >> On second look I believe someone else got to push WZ to
> >5th but looking just now Johns just 6 volts out from 4th
> >already. I believe John said yesterday that we have all
> >month to get the guys to first, second, and third. The fun
> >part will come as we determine the pecking order of the 3
> >> EV there, LMAO. Cya
> >> Jim Husted
> >> Hi-Torque Electric
> >>
> >> Mike & Paula Willmon <[EMAIL PROTECTED]> wrote:
> >> I voted the White Zombie into tie for 5th. Someone put
> >> him over :-) I'm stoked for you guys. I'm watching the
> >> EV's march up by 10's of votes and the leaders up 1 every
> >> once in a while. When is the cutoff for voting for the
> >February Featured Car of the Month?
> >
> >I'm giving WZ all my votes.
> >Try to get ONE car of the month into the archive/record
> >section.
> >
> >If they don't change the voting system... I just need to
> >choose who to support in February....
> >--
> >Aaron Birenboim \ I have an inferiority complex,
> >Albuquerque, NM, USA \ but its not a very good
> >one. aaron at birenboim.com \
> >http://aaron.birenboim.com \
> >
>
--- End Message ---
--- Begin Message ---
Hey Rod
You must be getting soft in your old age, lmao. Top 15?? please, 1st,2nd,
and 3rd is where I'm aiming. Of course if you want to stop at 15th just say
the word,hehehe.
Cya
Jim Husted
Hi-Torque Electric
Ralph Merwin <[EMAIL PROTECTED]> wrote:
Roderick Wilde writes:
>
> The "Maniac Mazda" is in 30th place and moving
> up daily. It would be great if we had three of the top fifteen places.
Rod,
Does this mean that you're bringing Maniac Mazada out of mothballs? ;-)
Ralph
---------------------------------
Yahoo! DSL Something to write home about. Just $16.99/mo. or less
--- End Message ---
--- Begin Message ---
" Never hace so few done so much for so many" Winston Churchell said, I
think. Keeping the tradition going!9?
Seeya
Bob
----- Original Message -----
From: "Roderick Wilde" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, January 05, 2006 10:34 AM
Subject: Psychological Effect of Drag Times
> Yes I know it's a Prom Queen vote but that even more than anything else
will
> have a strong psychological impact on the gas crowd. Once there are three
> electric cars in the top fifteen it will make it appear as if the EV
> movement is much bigger than it really is. Kind of like the Praying Mantis
> effect when he's on his hind legs or the biker with the high handlebars.
> It's all the same illusion. Or is the movement bigger than I think is?
>
> Roderick Wilde
>
>
>
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.371 / Virus Database: 267.14.13/221 - Release Date: 1/4/2006
>
--- End Message ---
--- Begin Message ---
That is my intention! Now that people are almost within a second of my best
time I can feel the heat. Competition drives the spirit.
Roderick Wilde
"Suck Amps EV Racing"
www.suckamps.com
----- Original Message -----
From: "Ralph Merwin" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, January 05, 2006 7:34 AM
Subject: Re: White Zombie in 4th place
Roderick Wilde writes:
The "Maniac Mazda" is in 30th place and moving
up daily. It would be great if we had three of the top fifteen places.
Rod,
Does this mean that you're bringing Maniac Mazada out of mothballs? ;-)
Ralph
--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.371 / Virus Database: 267.14.13/221 - Release Date: 1/4/2006
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.371 / Virus Database: 267.14.13/221 - Release Date: 1/4/2006
--- End Message ---
--- Begin Message ---
Hi, it's me again. I'm getting my motor shaft machined to adapt with a slip
yoke drive shaft to the differential for direct drive on a Cushman. The shaft
end they have to attach to will make the motor spin in reverse or pushing the
brushes up. The other motor end has a beveled gear on it which the machine
shop said they couldn't attach to. The desired direction I was told by
Warfield was to go in the pointed downward direction of the brushes. I thought
my Cummuta-Car spun in reverse, but can't remember now and I think Hondas do
also.
Are the brushes on a DC series wound motor beveled to increase surface area or
for direction? Any motor guru's know or had experience with operating long
term in reverse?
Is there an easy way to reverse the brush assembly if I need to?
Thanks, Mark
--- End Message ---
--- Begin Message ---
M.G. wrote:
> I am converting my snow blower to run on batteries. I have located three
> motors;
> Motor #1 is an old cooling fan motor 300 to 500 watts 12 volts. This is
> a permanent magnet motor.
> Motor #2 is a steering motor from a stand up lift truck 24 amps 18 volts.
> Perm mag also.
> Motor #3 is a drive motor from a walkie pallet jack. This is a series
> motor. I know this would be powerful enough but the weight is getting
> out of control as this motor probably weighs about 35lbs.
> Motor #4 is a power steering motor from a sit down electric lift truck.
> permanent magnet... 36/48 volts and the rpm on 48 volts is 1800.
What was the horsepower and rpm of the original motor? You should use its
specs as a guideline for picking a replacement.
If the original was a gasoline engine, an electric motor can be about 1/4th
its horsepower and still do the same job. This is because the gasoline engine
is rated by its peak horsepower, and the electric motor by the average power
it can deliver for an hour or more.
For the motors you mentioned, you can estimate their horsepower as 1/1000th of
the wattage (watts = volts x amps) it draws. For example:
#1 fan motor: 12v x (estimated) 15a = 180 watts = 0.18 horsepower.
#2 steering motor: 18v x 24a = 432 watts = 0.432 horsepower.
#3 drive motor: (I'd guess) 24v x 50a = 1200 watts = 1.2 horsepower.
#4 power steering motor: 48v x (estimated) 20a = 960 watts = 0.96 horsepower.
For PM motors, they only way to change the speed is to change the voltage.
--
Lee A. Hart 814 8th Ave N Sartell MN 56377 [EMAIL PROTECTED]
--- End Message ---
--- Begin Message ---
Danny Miller wrote:
> Well it'll also need to be an accurate VCO. I haven't messed with a VCO
> but doesn't its freq depend on a capacitor? Cheap caps aren't accurate,
> +/-10% kinda thing may reoccur.
There are many types of voltage-to-frequency converters. Some depend on an RC
network; some do not.
The ones that do (for example, Analog Devices AD537, AD650, National LM331)
require a good resistor and capacitor for accuracy. But it isn't hard to get
resistors and capacitors accurate to 0.1% -- they just cost more.
A common trick is to have two channels; one measuring a reference voltage, and
one measuring your unknown voltage. The display device compares the two,
essentially measuring the unknown as 0% to 100% of the reference. This
cancels out any errors due to the resistor and capacitor, allowing cheaper
parts to be used.
The other kind of voltage-to-frequency converter doesn't depend on an RC. For
example, the Analog Devices AD7740 uses a precision crystal oscillator
instead. It sends from 0% to 100% of the oscillator's pulses to the output to
represent the unknown voltage.
Depend on your attention to detail, voltage-to-frequency converters can
provide from 8-bit to 16-bit resolution and accuracy. Compared to digital A/D
converters, they tend to be cheaper and simpler. But they are analog, not
digital, and so don't appear on-chip with microcomputers. The A/D converters
inside a microcomputer chip have to be built with purely digital technology.
> I'd prefer to go with a uC, which would also mean a 5v reg and a couple
> of caps. Then there's the issue of how to manage a bunch of signals
> which brings us back the the "EVilBus" concept. This requires 2 optos
> in a node.
Exactly. The above V/F converters can operate standalone, with no micro, no
regulator, and an absolute minimum of other parts. Their output is digital,
so it can be optically or transformer-coupled for isolation with no loss of
accuracy. Only a single opto or transformer is needed. That's the attraction!
Danny Miller wrote:
>> A VCO or uC ADC could generate an accurate digital reading, though
>> only at additional cost.
You'd be surprised! V/F type A/D converters can be *very* inexpensive. One of
my projects has a 3-channel V/F circuit (voltage, current, temperature) that
is accurate to 10 bits and whose total parts cost is under $1.
--
Lee A. Hart 814 8th Ave N Sartell MN 56377 [EMAIL PROTECTED]
--- End Message ---
--- Begin Message ---
Of those choices, motor 3 is the only one that comes close to being acceptable
for a snowthrower.
The GE Elec-Trak snowthrower motor is larger than the tractor drive motor. In
fact I think it's the largest motor on any of the ET attachments.
Still.... I believe it's only a 2.5hp golfcart motor.
I would expect a walkie pallet jack to have a shunt motor instead of series,...
for speed regulation while unladen or going down ramps. ...I also don't think a
shunt motor would work very well on a snowthrower.
Stay Charged!
Hump
For John's White Zombie -
"http://www.dragtimes.com/voteprocess.php?slipID=7484";
For the Matt's Nissan 240SX -
"http://www.dragtimes.com/voteprocess.php?slipID=7382";
For Rod's Maniac Mazda -
"http://www.dragtimes.com/voteprocess.php?slipID=7519";
the Original Message -----------------------
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Lee Hart
Sent: Wednesday, January 04, 2006 6:14 PM
To: [email protected]
Subject: Re: Motor speed?
M.G. wrote:
> I am converting my snow blower to run on batteries. I have located
> three motors; Motor #1 is an old cooling fan motor 300 to 500 watts 12
> volts. This is
> a permanent magnet motor.
> Motor #2 is a steering motor from a stand up lift truck 24 amps 18 volts.
> Perm mag also.
> Motor #3 is a drive motor from a walkie pallet jack. This is a series
> motor. I know this would be powerful enough but the weight is getting
> out of control as this motor probably weighs about 35lbs.
> Motor #4 is a power steering motor from a sit down electric lift truck.
> permanent magnet... 36/48 volts and the rpm on 48 volts is 1800.
What was the horsepower and rpm of the original motor? You should use its
specs as a guideline for picking a replacement.
If the original was a gasoline engine, an electric motor can be about 1/4th
its horsepower and still do the same job. This is because the gasoline
engine is rated by its peak horsepower, and the electric motor by the
average power it can deliver for an hour or more.
For the motors you mentioned, you can estimate their horsepower as 1/1000th
of the wattage (watts = volts x amps) it draws. For example:
#1 fan motor: 12v x (estimated) 15a = 180 watts = 0.18 horsepower.
#2 steering motor: 18v x 24a = 432 watts = 0.432 horsepower.
#3 drive motor: (I'd guess) 24v x 50a = 1200 watts = 1.2 horsepower.
#4 power steering motor: 48v x (estimated) 20a = 960 watts = 0.96
horsepower.
For PM motors, they only way to change the speed is to change the voltage.
--
Lee A. Hart 814 8th Ave N Sartell MN 56377 [EMAIL PROTECTED]
--- End Message ---
