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LED Bulbs from Uncle Sam

Discussion in 'Motoring Related Discussion' started by davemercedes, Jan 31, 2018.

  1. Yugguy

    Yugguy Senior Member

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    Aye, to be honest I ran hids for a while not for brightness but for the colour temp.

    The osram nb+ halogens are whiter than ordinary halogens but still not 5k like the rest of my lights.
     
  2. M80

    M80 Senior Member

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    I would really like that, but I wasn't sure if brake lights remained lit.
    I would reeeally like distronic, twould be right grand.

    If and when I get the Viano as I would like I anticipate it being my daily drive for lots of years, getting these nice gizmos just'aint likely any time soon.
     
  3. M80

    M80 Senior Member

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    Up here we see a lot of fog and the whiter, higher colour temps just get thrown back at you.
    Years ago in my 2001 C class I fitted after market HID's, I know illegal, I fitted 4000 Kelvin and they were excellent at cutting the fog. The downside was that everything looked green.
     
  4. OP
    davemercedes

    davemercedes Senior Member

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    That's because you've learned a "dinosaur" instinct over the years and you anticipate that the small light from far away will become a headlight as the car comes around the curve (while the oncoming driver often does not). It also appears you're another rarity these days - a considerate driver! The police manual "Roadcraft" goes into great lengths about this - teaching (young and old) drivers to anticipate what happens with the surrounding foliage/road shape etc - it's a very interesting manual that is actually quite obvious in what it preaches.
     
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  5. turbopete

    turbopete Senior Member

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    and pretty much what ive been saying for YEARS!!!
     
  6. turbopete

    turbopete Senior Member

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    the purpose of foglights is that the beam are a wider beam so aid in seeing the edges of roads better. ive fitted them to most of the cars ive had that didn't have them and do find them a benefit.
     
  7. Craiglxviii

    Craiglxviii Senior Member

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    Corrected that for you!
     
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  8. turbopete

    turbopete Senior Member

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    not necessarily. just look at the 'cornering light' systems fitted to many cars (like a guy at work with a Seal Ibiza for example) they all use the fog lights regardless of if its foggy or not.
     
  9. LostKiwi

    LostKiwi Senior Member

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    They also don't operate above 20mph.
    All I can say is you aren't looking very far down the road if you need that much light out the sides (unless you're drifting everywhere).

    All the folk that drive with them all the time must have fog between the ears (as my other half says).
     
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  10. Craiglxviii

    Craiglxviii Senior Member

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    Nope. They use cornering lamps. If combined with foglamps there are two bulbs each with different beam patterns combined into one lamp unit on each side.
     
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  11. C350Carl

    C350Carl Senior Member

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    Was just going to post about this being so.

    Also some cars now have the DRL’s combined in the fog/cornering unit. Which can lead some people to think that they’re driving round with fog lights on when they’re not.
     
  12. Craiglxviii

    Craiglxviii Senior Member

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    This is why matrix LED is such a great concept. One block of Osram’s finest multichip, RGBW in some cases dependent on what’s required, with the correct optics can do low & high beam, bendy beam, electronically steered moving black spot, DRL, fog, cornering and turn signal all in a package 50 x 25mm.

    Oh and apparent colour temp can be tuned to match your preference. And foglamps can be turned “selective yellow” if so programmed.

    Needless to say it’s cool as f***.
     
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  13. LostKiwi

    LostKiwi Senior Member

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    And as expensive to fix when it goes wrong as the space shuttle.....
     
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  14. Craiglxviii

    Craiglxviii Senior Member

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    If. Not when. That’s the trade off of cost vs performance. Properly designed LED lamps will now run for 120,000 hours*. Halogen H7 will run for... 800 hours at OEM spec.

    What all that means is that with the levels of tech being brought into production now (actually, thermal management tech) for lighting, these lamps should outlast the car.

    *for 99.98% of production. Of course we don’t hear their voices just the 0.02% which fail. Actually that’s nominal, we haven’t seen anything like that high a failure level in auto LED lighting since VAG turned round and gave Philips’ Lumileds a savage beating back in 2008 over the eyeliner failures.
     
  15. turbopete

    turbopete Senior Member

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    so how do they get the different beam patterns? internal lense? (the seat outer lenses are pretty much just clear glass, unlike the foglights of old)
    and presumably they use 55w bulbs (as is standard I believe) for both cornering lights AND foglights? (the seat owner didn't know the car had them until a local cop told him his 'foglight' was working strangely) id imagine on some cars, running 2 bulbs is also challenging from a space point of view (and probably explains to a degree why I thought cornering lights were a pointless gimmick)
     
  16. turbopete

    turbopete Senior Member

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    some of the fog ive driven in you could barely see more than a few yards. on roads where there is no lighting, no line at the side of the road and no centre road markings, being able to see out to the sides can mean the difference between staying on the road or being in a ditch. ive had fog so bad even dipped beam was useless and I could see more with just sidelights and front fogs. whilst such fogs are rare here and tend to be in rural areas, these are the areas ive lived/driven most of my life. before moving to my current house, fog was so bad I couldn't see the car (parked behind the house) FROM the house. a distance (straight line) of 5 yards. and yes I did have to go out in it.
     
  17. LostKiwi

    LostKiwi Senior Member

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    I think I can count the number of times I've used fog lights on the fingers of one hand (and I mean either front or rear) and I've driven in some very dense fog. 00slk will know about the Waikato fogs... (Great fun rallying in Maramarua in them!)
     
  18. Yugguy

    Yugguy Senior Member

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    You have front and rear hands? :p
     
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  19. Craiglxviii

    Craiglxviii Senior Member

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    Two different beam pattern reflector hemispheres inside the same housing. The outer lens is just a clear cover nowadays.
     
  20. OP
    davemercedes

    davemercedes Senior Member

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    The rear hands help when you to paws for a while!
    OK... sorry... :oops: my coat's on the hanger...
     

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