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]>
--- Begin Message --- 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

--- End Message ---
--- Begin Message ---
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.

--- End Message ---
--- Begin Message ---
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.

--- End Message ---
--- Begin Message --- 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... :-)

--- End Message ---
--- Begin Message ---
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?)



--- End Message ---
--- Begin Message ---
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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