EV Digest 6905
Topics covered in this issue include:
1) Made the jump
by Dennis Foulke <[EMAIL PROTECTED]>
2) Chargeing infrustructure idea
by Jeff Shanab <[EMAIL PROTECTED]>
3) RE: High Speed Electric Winch for Wakeskating
by Jeff Shanab <[EMAIL PROTECTED]>
4) Re: Made the jump
by Dan Frederiksen <[EMAIL PROTECTED]>
5) Vacuum pumps
by Ian Hooper <[EMAIL PROTECTED]>
6) Re: Made the jump
by Tehben Dean <[EMAIL PROTECTED]>
7) Re: Series/parallel battery question
by dale henderson <[EMAIL PROTECTED]>
8) Re: Vacuum pumps
by Bob Bath <[EMAIL PROTECTED]>
9) Re: Brake booster pressure
by "owen" <[EMAIL PROTECTED]>
10) Tesla article + discussion
by "Ryan Stotts" <[EMAIL PROTECTED]>
11) Re: Vacuum pumps
by Dan Frederiksen <[EMAIL PROTECTED]>
12) Re: Mount Washington Alternative Regatta
by lyle sloan <[EMAIL PROTECTED]>
13) Re: Vacuum pumps
by Victor Tikhonov <[EMAIL PROTECTED]>
14) RE: Tesla article + discussion
by Mike Willmon <[EMAIL PROTECTED]>
15) RE: Aircraft Starter generator
by Mike Willmon <[EMAIL PROTECTED]>
16) Re: full size truck conversion
by "owen" <[EMAIL PROTECTED]>
17) Re: full size truck conversion
by "Peter VanDerWal" <[EMAIL PROTECTED]>
18) Re: Aircraft Starter generator
by "Zeke Yewdall" <[EMAIL PROTECTED]>
19) Re: Vacuum pumps
by "Zeke Yewdall" <[EMAIL PROTECTED]>
20) ev mail
by Ted Sanders <[EMAIL PROTECTED]>
21) Battery Warranties - How to get them to give me replacements
by Steve Powers <[EMAIL PROTECTED]>
22) Re: EV digest 6904
by Gordon G Schaeffer <[EMAIL PROTECTED]>
23) Re: Made the jump
by "Bob Rice" <[EMAIL PROTECTED]>
24) Saab Spin Tests Successful
by "Mark Ward" <[EMAIL PROTECTED]>
25) Re: Chargeing infrustructure idea
by Lee Hart <[EMAIL PROTECTED]>
26) Re: Aircraft Starter generator
by Lee Hart <[EMAIL PROTECTED]>
27) Re: Series/parallel battery question
by Lee Hart <[EMAIL PROTECTED]>
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I decided that I did not have the time to dedicate to
building/converting my own EV so I just ordered a NmG from Myers
Motors. I can't wait to get it and terrorize the people in
Beavercreek, OH... :-)
--
Dennis Foulke
"Every reform was once a private opinion." - Ralph Waldo Emmerson
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Earlier we were talking about how ways of making our own charging
locations and today I had 2 other ideas.
If these are at our own house, this is convienent. We just put a barcode
scanner in it and use the ID's that stores give out to people, This
gives us a unique id for me and the misses(oh, don't have one of those
yet) to put on our keychain. If we pick one that is popular, say
Savemart or borders, we reduce the crap people have to carry.
The other is what they use at school for printers and such. A magstripe
card in which the value is encoded onto the card and usage subtracts
from it.
We could allow people to buy prefilled cards by mail.
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I think a switch on a tension roller would be a good idea, If a person
falls and lets go of the cable it stops until he swims back to it, puts
tension on it, and signals you to hit the "go" button.
Or is this a totally manned thing where you are actuating the throttle
anyway.? feeding into it to get them up, then tromping on it for the big
guys jump or toneing it down for the little tykes.
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hehe that's one goofy car. but at that price why not buy a conversion of
a gas car from a conversion garage?
Dennis Foulke wrote:
I decided that I did not have the time to dedicate to
building/converting my own EV so I just ordered a NmG from Myers
Motors. I can't wait to get it and terrorize the people in
Beavercreek, OH... :-)
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Hi all,
Vacuum pumps for power brakes.. what does everyone recommend? Is this
one suitable and/or any good?
http://cgi.ebay.com/Thomas-Diaphragm-Vacuum-Pump-Compressor-12-Volt-
Unused_W0QQitemZ110136104937QQihZ001QQcategoryZ46548QQrdZ1QQssPageNameZW
D1VQQcmdZViewItem
(e.g how noisy are they?)
TIA,
-Ian
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Message-ID: <[EMAIL PROTECTED]>
Date: Sat, 16 Jun 2007 10:49:38 -0500
From: Lee Hart <[EMAIL PROTECTED]>
MIME-Version: 1.0
To: ev@listproc.sjsu.edu
Subject: Re: Series/parallel battery question
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
dale henderson wrote:
> resending with an attempt to fix the ASCII graphics
Dale, I'm still having trouble figuring out what you are asking. The
ASCII graphics are fine; but they don't make sense.
Powercheq modules have *three* wires, but your illustrations imply only
two. Powercheqs only work for 12v battery pairs.
"Buddy pairs" means two identical batteries in parallel. For example,
two 12v 50amphour batteries in parallel to make one 12v 100amphour
battery. The Powercheqs don't know or care what the amphour capacity of
the battery is, or whether each 12v battery is one or many in parallel.
>> if anyone has any experience with or advise on how
>> to keep a series/parallel battery pack balanced please
>> respond to the following questions.
Lead-acid batteries in parallel tend to self-balance. You don't need to
do anything except run wires between them. It works best when they are
the same make and model, and at the same temperature. Just treat them
the same as one battery whose amphour capacity is the sum of that of the
each battery.
Batteries in series are much harder to balance. For floodeds, most
people don't bother -- the cost is greater than the benefit. For sealed
batteries, you pretty much have to bite the bullet and use some kind of
balancing or they will die young.
The cheapest option are the zener-lamp regulators described many times
on this list. More expensive options include the Powercheqs you
mentioned, the Rudman regulators, my Battery Balancer, individual
chargers per battery, and various other approaches.
--
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
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