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749 Anyone Fitted Hid's?

Discussion in '749 / 999' started by bluey, Oct 11, 2015.


  1. No doubt! There will be no real optical control, The light is going everywhere so you can see lots more and oncoming traffic finds it difficult to deal with
     
    • Disagree Disagree x 1
  2. In my projector housing there is no glare whatsoever. You can stand in front of the bike and stare right at the light with no problem at all. Now, in a reflector housing, very different story.
     
    • Agree Agree x 2
  3. Hi I fitted a set of HID to my BMW s1000rr , I spent alot of time fitting them as neat as I have ever seen done , but after all that I wa very disapointed in the light they made , so much so I only kept them on one winter and removed them the next spring , I bought Philips top quality bulbs at a fraction of the price of the HIDs and guess what the bulbs worked alot better. Ken
     
  4. Was that a cheap Chinese kit by any chance?
     
  5. Hi I fitted a set of HID to my BMW s1000rr , I spent alot of time fitting them as neat as I have ever seen done , but after all that I wa very disapointed in the light they made , so much so I only kept them on one winter and removed them the next spring , I bought Philips top quality bulbs at a fraction of the price of the HIDs and guess what the bulbs worked alot better. Ken
    It sure was, would'nt say £60 each side was cheap .
     
  6. I dont think there worth the hassle , they may say Ring on the box but I bet their made in china, I dont think all these lighting problems are to do with the bulbs , more to do with design and style and that then leads to the shape of the reflector, my dad had a R60 BMW with a huge round lamp on it , I remember it worked as good as a street lamp lol
     
    • Like Like x 1
  7. HID lamps in Halogen optic = square peg in a round hole
     
  8. And to prove my point





    They are illegal, for the reasons I gave earlier.
     
  9. But what do I know. I am only a lighting engineer.
     
    • Like Like x 1
  10. That's not absolutely true. In a reflector housing yes true, but inside a projector housing HIDs work perfectly.
     
    • Agree Agree x 1
    • Disagree Disagree x 1
  11. Then you will know the difference between a reflector housing and a projector housing.
     
    • Like Like x 1
    • Funny Funny x 1
  12. Why would someone put a video up about fitting HID to a normal reflector headlight when everyone here seems to be fitting them to projector headlights? You don't need to be a lighting engineer to know the difference, but there again there could be lighting engineers out there who just fit strip lights to houses and would not know anything about headlights.
     
    • Disagree Disagree x 1
  13. Fitted hids to my pre aprc rsv4. Much better than before. Has passed the mot twice since. Main beam takes a little longer to warm up but ive re wired the switch gear to keep the dips on when the full is on. There's no room in the front end of mine but still managed to find space for the ballasts.
     
  14. Because the laws of physics and optical design do not change just because the method of optical control changes. I know this because I work with refractors and reflectors.

    The rules do not change. The optical centre of the optic is crucial, whether refractor or reflector. As is the dimension, orientation and light distribution of the lamp. Halogen and HID are nothing like one another.


    Lastly, the optics are not 100% efficient. The projector headlight will have a back reflector designed to catch light which is emitted backwards from the lamp and rejected by the lense due to TIR, and redirect that back towards the lens for a second attempt.

    Disability Glare causes accidents, which is why it is strictly controlled in vehicles and street lighting. If it's what people want to do, then fill yer boots, but don't come moaning to the forum because they have landed you in trouble. You have been informed.
     
    • Like Like x 1
  15. Ho hum! Fit a HID lamp into a projector and see for yourself.
     
  16. I have after market HID projectors in my car and two of my bikes and I can assure you that there is no stray light above the cut off at all. My car would not have passed the roadworthy test for the past 8 years with stray light. You won't believe me, or the many other people with experience, so why do you keep banging on?
    You won't change the opinions of anyone who has HID fitted because we are all impressed with them.
     
    • Like Like x 1
  17. Yep.... If mine were glaring I don't think it would have passed... Twice, so far...
     
  18. I give up. Obviously I, and the DoT don't know anything.

    I am not going to try and condense 22 years of experience in optics, photometry and design into a short forum post.

    There are many factors to consider above those listed such as spectral output, colour temperature, lumen output, age of observer, age of driver, ocular scattering, Rayleigh scattering just so you guys can say "I looked at mine and they are not bright"

    Just because it passes an MOT means absolutely nothing and does not mean it is safe and that your insurance company will pay out after you have caused an accident.
     
    • Agree Agree x 1
  19. Case in point.

    Halogen lamp will put 1 lux on the retina. An HID conversion kit will put at Least 3 lux on the retina.

    1 lux is fine

    3 lux will cause disability glare.

    As a professional lighting engineer, my light meter is not accurate to 2 Lux.

    £100,000 worth of gonio photometer will read to an accuracy of 2%

    There is no way an MOT station can get anywhere near that accuracy.
     
    #40 749er, Dec 28, 2015
    Last edited: Dec 28, 2015
    • Agree Agree x 1
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