Converting 11BL to 12V
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Thread: Converting 11BL to 12V

  1. #1
    Fellow Frogger! citroenthusiast's Avatar
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    Default Converting 11BL to 12V

    I am contemplating converting my '54 Paris built 11BL to 12 Volts. Primarily so I can add an aircon system.

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    As I see it since the engine is already from an ID, I can use post-61 distributor parts, generator (alternator) etc. The fuel gauge can be converted using a transformer, or possibly changing the tank sender.

    The one thing that has me stumped is the wiper motor. Are Slough wiper motors interchangeable? If so, are they available? Any other wiper motors that could reasonably be pressed into service (e.g. 2CV)?
    Cheers,
    John T.

    54 TAV Legere; 61DS19 LHM BVH (son's); 71DS21 BVH; 73SM 3.0; 73SM EFI (Megasquirt); 73SM 3.0 (other son's)

  2. #2
    Real cars have hydraulics DoubleChevron's Avatar
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    Have you tried the wipers on 12volts..... They may just works really nice and fast The 6volt starters sure seem to like 12volts when I do that to them (the old Renault 4s 6 volts starters used to spin very quickly when 12volts was thrown to them )
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  3. #3
    Fellow Frogger! citroenthusiast's Avatar
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    A starter motor only works for a short time as opposed to the wiper motor, so I was concerned the wiper motor would burn out.
    I suppose I could simply putting a wire wound (high wattage) resistor in series, but just wondered if there was an alternative. Thanks.
    Cheers,
    John T.

    54 TAV Legere; 61DS19 LHM BVH (son's); 71DS21 BVH; 73SM 3.0; 73SM EFI (Megasquirt); 73SM 3.0 (other son's)

  4. #4
    1000+ Posts driven's Avatar
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    1000+ Posts robmac's Avatar
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    [QUOTE=citroenthusiast;so I was concerned the wiper motor would burn out.
    I suppose I could simply putting a wire wound (high wattage) resistor in series, but just wondered if there was an alternative. Thanks.[/QUOTE]


    It won't work very well. Wiper motors draw mechanical load dependent current, so when the wipers are lightly loaded the motor voltage will be higher than when heavily loaded.

    Best to use a regulated voltage device as suggested by driven.
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    Too many posts! JohnW's Avatar
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    I was going to ask "why bother" until I got to "air conditioning" and remembered where you live!! We've passed through Phoenix twice (pre-Aussiefrogs recognition of your posts) and it seemed quite warm.

    I'd also go for an appropriate capacity "regulated voltage device".

    Related though, some of us in Oz have 60 amp 6V alternators sourced from USA, and they make a 100 amp item too.

    Cheers
    JohnW

    Renault 4CV 1951
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  7. #7
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    I think the fuel gauge will work Ok with a resistor in series with the gauge to convert it to 12V
    Woody

  8. #8
    1000+ Posts forumnoreason's Avatar
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    keep it original, wind the windows down, dress like Harry Dean Stanton in Paris Texas, spark up a Chesterfield and put your foot down like Stan Ridgway sings in " Just drive she said". "Everybody wants another piece of pie today she said..." oh that's " The Big Heat". Raymond Chandler anybody?
    Last edited by forumnoreason; 4th July 2018 at 11:15 PM.

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    Fellow Frogger! tractionfan's Avatar
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    Hi, Ive done this with my normale. I bought an inverter from jaycar. it has a variety of volts to choose from I run my wipers on 8 volts which makes the wipe at a speed where you can almost see the road.
    Hope that helps.
    regards
    Bill

  10. #10
    Fellow Frogger! citroenthusiast's Avatar
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    Thanks for the tip. It looks like the DC/DC converter is the way to go. I was concerned about the necessary capacity. What wattage was the DC/DC converter you used?
    Cheers,
    John T.

    54 TAV Legere; 61DS19 LHM BVH (son's); 71DS21 BVH; 73SM 3.0; 73SM EFI (Megasquirt); 73SM 3.0 (other son's)

  11. #11
    Fellow Frogger! citroenthusiast's Avatar
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    Quote Originally Posted by JohnW View Post
    I was going to ask "why bother" until I got to "air conditioning" and remembered where you live!! We've passed through Phoenix twice (pre-Aussiefrogs recognition of your posts) and it seemed quite warm.

    Cheers
    Its the beginning of our dog days of summer here. 42C today 45C tomorrow....
    Cheers,
    John T.

    54 TAV Legere; 61DS19 LHM BVH (son's); 71DS21 BVH; 73SM 3.0; 73SM EFI (Megasquirt); 73SM 3.0 (other son's)

  12. #12
    Fellow Frogger! tractionfan's Avatar
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    To be truthful I just picked it up off the shelf and didn't look. I've installed it under the trim cover at the top of the screen.

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    Fellow Frogger! badabec's Avatar
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    Hello, this guy in Oz does 12v to 6v converters for wipers and horns

    Klaxon Horns ? Klaxon Horn repairs, original restored horns, and spare horn parts

  14. #14
    Too many posts! JohnW's Avatar
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    Quote Originally Posted by citroenthusiast View Post
    Its the beginning of our dog days of summer here. 42C today 45C tomorrow....
    Yes, that's seriously warm. the 11BL cools adequately I suppose if you are contemplating AC. Not an ideal climate for my CX.
    JohnW

    Renault 4CV 1951
    Renault R8 1965
    Renault Scenic 2005 (wife's)
    Renault Scenic 2007 (mine)
    Renault Scenic 2006 (daughter's)
    CitroŽn CX Pallas 1980

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  15. #15
    1000+ Posts robmac's Avatar
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    LM7806 Positive 6v Voltage Regulator | NightFire Electronics LLC

    For dash instruments and current drains of less than 1 amp LM 7806 is a no brainer choice. For less than
    A50cents including an input filter capacitor a three terminal 6 volt positive regulator is bang for buck.

    If you have a little electronic knowledge a 10 or 15 amp regulator can be built by adding a couple of hefty pass transistors. And you are still looking at less than $ A10 all up.
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