Page 1 of 2 12 LastLast
Results 1 to 10 of 12

Thread: here's a tough one... 6v car

  1. #1
    Newbie
    Join Date
    May 2003
    Posts
    1

    here's a tough one... 6v car

    Yes, a car with a 6v eletrical system (old Porsche. VWs, Studebakers, Model Ts and many others over the years were 6v also).

    So... I have an old Laptop (Dell Lattitude 166mmx) and I'd like to use it as a MP3 stereo in my car. I don't need/want fantastic sound, or a massive amplifier or anything like that.

    As far as power (which is why I'm posting), I have a few options. One would be to convert the car to 12v - way to expensive though. So I'm stuck with either using a 6v-12v inverter, or a second 12v battery (deep cycle I'm guessing) that either I'll have to charge every so often or rig some other charging system for it.

    The inverter I'm considering is at JC Whitney: http://www.jcwhitney.com/item.jhtml?ITEMID=793&BQ=jcw2

    I'm an electrical id10t, so any and all advice is appreciated.
    --
    This space for rent.

  2. #2
    Constant Bitrate
    Join Date
    Oct 2002
    Posts
    176
    if i recal correctly delco alternators often have the regulator built in , they were popular for conversions
    but you could stuff one in with a small battery and have a complete 12v system as well as the orig

    a boost from a 12v car started my volks really fast.....

  3. #3
    Variable Bitrate
    Join Date
    Sep 1999
    Location
    Yarmouth NS, Canada
    Posts
    336
    I seem to remember a long time ago seeing on a television car show about a battery that provided both 6v and 12v stock, so that you could use existing accessories but also add 12v ones as needed (brighter headlights, etc) without causing too many problems like a completely 6v -> 12v conversion.

    I've been googling for an hour trying to find the thing, but I can't. I'll keep looking, but I know this product exists (or was planned at least).
    MP3 Cavalier - http://www.mp3cavalier.com
    MP3 Grand Prix - http://www.mp3gp.com

  4. #4
    FLAC DodgeCummins's Avatar
    Join Date
    Oct 2000
    Location
    DFW area
    Posts
    1,386
    If you really have your heart set leaving your car 6v...

    You can get an aftermarket 12v alternator, and wire it up to a 12v battery...only hook your stereo equipment up to that....(leave your 6v system intact)...so you are running two alternators.

    Assuming you have a neg ground system, there should be no problem using the common ground...the circuit would be complete between your 12v battery and alternator.

    If it is a Positive ground system...then I would think it would work but really wouldn't want to find out...-6v to +12v = 18v differential...

    If you could electrically isolate all the components, stereo, alternator, battery etc, then that would work also.

    Take that jeep build up on the "show your stuff" section, it has a fiberglass body, so ALL the electrical components (off the engine) are isolated, and ground wires (battery negative)

    I used to have a 6v VW, I looked at inverters etc, but found out I could simply drop a later 12v generator in, and change the bulbs...everything else would work fine...even the starter would work...only faster...I never did the conversion but that was due to lazyness...(I ran a stereo in the back seat off batteries )

  5. #5
    Maximum Bitrate
    Join Date
    Dec 1999
    Location
    Buena Park, CA
    Posts
    468
    You could also add a second 6V battery, wired series/parallel. This would allow you to keep the car system 6V, and wire the second battery to provide the 12V needed for your laptop.
    KG6OQD
    www.americansandassociation.org

  6. #6
    I'm sorry, and you are....? frodobaggins's Avatar
    Join Date
    Jan 2003
    Location
    Ruston, LA
    Posts
    8,846
    Originally posted by AVGeek
    You could also add a second 6V battery, wired series/parallel. This would allow you to keep the car system 6V, and wire the second battery to provide the 12V needed for your laptop.
    While this sounds feasible at first glance, it is not. You would have to wire them first in parallel for charging. Then to extract the needed 12 volts you would need to wire them in series, which creates an instant short from positive to ground.

    short = bad
    [H]4 Life
    My next generation Front End is right on schedule.
    It will be done sometime in the next generation.
    I'm a lesbian too.
    I am for hire!

  7. #7
    Retired Admin Aaron Cake's Avatar
    Join Date
    Jan 2000
    Location
    London, Ontario, Canada
    Posts
    2,464
    Also remember that those combination 6/12 batteries generally get their 6V by tapping half the battery. This causes the battery to become internally unbalanced, thus meaning VERY SHORT life. The better ones use internal regulator circuits.
    Player: Pentium 166MMX, Amptron 598LMR MB w/onboard Sound, Video, LAN, 10.2 Gig Fujitsu Laptop HD, Arise 865 DC-DC Converter, Lexan Case, Custom Software w/Voice Interface, MS Access Based Playlists
    Car: 1986 Mazda RX-7 Turbo (highly modded), 1978 RX-7 Beater (Dead, parting out), 2001 Honda Insight
    "If one more body-kitted, cut-spring-lowered, farty-exhausted Civic revs on me at an intersection, I swear I'm going to get out of my car and cram their ridiculous double-decker aluminium wing firmly up their rump."

  8. #8
    jol
    jol is offline
    FLAC jol's Avatar
    Join Date
    Jan 2002
    Location
    Mellansel, Sweden
    Posts
    1,299
    [i]I used to have a 6v VW, I looked at inverters etc, but found out I could simply drop a later 12v generator in, and change the bulbs...everything else would work fine...even the starter would work...only faster...I never did the conversion but that was due to lazyness...(I ran a stereo in the back seat off batteries ) [/B]
    A friend of mine uses a 6v windshield viper on his 12v beach buggy, extremely fast
    Isnt there any regulating circuit that takes 5-8volts?

  9. #9
    FLAC DodgeCummins's Avatar
    Join Date
    Oct 2000
    Location
    DFW area
    Posts
    1,386
    You mean, regulate the 12v back down to 6v...I am sure there are such things...

  10. #10
    jol
    jol is offline
    FLAC jol's Avatar
    Join Date
    Jan 2002
    Location
    Mellansel, Sweden
    Posts
    1,299
    no 6 to 12, since there is laptop chargers 12 to 19

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •