UV cut Halogen globes
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  1. #1
    Guru davemcbean's Avatar
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    UV cut Halogen globes

    A couple of weeks ago I replace the 55/60W Halgoen globes in my 505 with 70/75W Narva "UV-cut" Halogen globes.

    The result was the lights became very dim. I put the old globes back and all was well again.

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    My question is, is this because the thin wires give too much voltage drop for 70W globes or is the dim light a side effect of "UV-cut" globes which are designed to be safe for use with polycarbonate headlight lenses.

    I've notice that many globe makers have recently released +30% brighter and +50% brighter versions of "UV-cut" globes and I wonder whether this is just an improvement which allows them to work as well as old fashioned Halogen globes.

    Dave
    NZ Fleet
    1976 504 Ti
    1984 205 GT twin carb
    1991 205 SI 1.6GTI motor
    1994 106 Xsi
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  2. #2
    nJm
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    I've been in a 505 with the Narva 50%+ globes using the standard wattage and there was a significant improvement, most obvious on poorly lit country roads - they would light up the cats eyes and signs from quite a bit more distance. It also makes the headlights appear to be more white (but not blue). I intend to fit them to my 505 ASAP.
    Nick
    1983 Peugeot 505 GR


    "All of its cars from the 1.1 litre 205 through the ugly duckling 309 to the 2.2 litre 505 GTi had a rightness and a righteousness about them that turned every humdrum drive into a journey. Someone, I once wrote, in the bowels of Peugeot understands handling and how a chassis should feel." - Jeremy Clarkson

  3. #3
    1000+ Posts bowie's Avatar
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    <img src="http://images.cardomain.com/member_img_a/249000-249999/249992_6_full.jpg" alt=" - " />

    or you could just do it the old fashioned way wink

    it does make driving at night a painless exercise..

    only thing i regret now is that im unable to fit the 505 bar with the lower lip frown

    <small>[ 24 July 2003, 11:39 AM: Message edited by: bowie ]</small>

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  4. #4
    Fellow Frogger! Ralph's Avatar
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    Dave,

    I've found that using thin wire to power the headlight/driving lights isn't good as the voltage drop across the wire is too great. If you're powering two driving lights at 75W each they will be drawing about 12.5A total. The I2R losses along the wire would be significant. Try using a larger guage wire of about 4-5mm. Run it straight off the + output of the alternator, via a relay of course. That should improve things somewhat.
    I met your father last Friday at the Redex Trial when they stopped at Albury. He's a nice bloke, told me a bit about his RAEME days in Bandiana. Nice 203 too. I would have had some pictures to post but Boodek forgot the camera! Saw plenty of old Pugs and gave out heaps of stickers.

    Cheers,

    Ralph.
    On the internet, no one knows that you are only wearing a fez.

  5. #5
    1000+ Posts Rod Hagen's Avatar
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    y question is, is this because the thin wires give too much voltage drop for 70W globes o
    I womder whether there is a difference in the capacity of the Series 1 wiring compared to series 2. I've run "regular" 100W globes in the sLi for a couple of years without any problems. Makes a huge difference to the lighting.

    Cheers

    Rod
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  6. #6
    Guru davemcbean's Avatar
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    Thanks for all the replies and suggestions.

    I'm actually quite happy with my 505 lights. I just thought I try the 70/75W globes. I wanted to see how good I could get things using the standard tiny wires without relays, just for interests sake. I have had relays on previous cars with 5mm wires and 100W globes, and surprisingly the standard trapezoidal 505 headlights with 55/60W globes fare quite well in comparison. Obviously with relays, thicker wires and higher wattage globes it would be much better, but I've never struck another car with only 55/60W globes and no relays with such good lighting as the 505 has.

    If I really wanted to go all out, I'd fit the twin globe type 505 headlights with four 130W globes, 5mm wires and relays.

    All in all this doesn't really answer my original question about whether UV cut globes are usually dimmer than the equivalent globes which they replace in their manufacturers catalog. I will eventually try the 50+ type globes, but wanted to make sure that they are actually better than what I have already. Thanks for your comments on this Nick.

    Dave

    <small>[ 25 July 2003, 05:52 PM: Message edited by: davemcbean ]</small>
    NZ Fleet
    1976 504 Ti
    1984 205 GT twin carb
    1991 205 SI 1.6GTI motor
    1994 106 Xsi
    1996 Mondeo V6
    Aus Fleet
    1955 203C
    1997 Civic Cxi (great allrounder- revy, flexible, nimble, comfortable , economical, simple and durable )

  7. #7
    Guru davemcbean's Avatar
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    Ralph:
    I met your father last Friday at the Redex Trial when they stopped at Albury. He's a nice bloke, told me a bit about his RAEME days in Bandiana. Nice 203 too. I would have had some pictures to post but Boodek forgot the camera! Saw plenty of old Pugs and gave out heaps of stickers.

    Cheers,

    Ralph.
    Ahh, so that was you! He told me he'd met somebody from Aussiefrogs in Albury.

    Dave
    NZ Fleet
    1976 504 Ti
    1984 205 GT twin carb
    1991 205 SI 1.6GTI motor
    1994 106 Xsi
    1996 Mondeo V6
    Aus Fleet
    1955 203C
    1997 Civic Cxi (great allrounder- revy, flexible, nimble, comfortable , economical, simple and durable )

  8. #8
    nJm
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    Dave, I have just fitted the Narva globes to my car. I'll test them out tonight and let you know how they go.

    Cheers,

    Nick.
    Nick
    1983 Peugeot 505 GR


    "All of its cars from the 1.1 litre 205 through the ugly duckling 309 to the 2.2 litre 505 GTi had a rightness and a righteousness about them that turned every humdrum drive into a journey. Someone, I once wrote, in the bowels of Peugeot understands handling and how a chassis should feel." - Jeremy Clarkson

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