[s-cars] ecode Xenons

[Bob DG]

I believe it is also because our road signs are reflective, so you need some 
more light scatter upwards than our euro friends whose signs are usually 
illuminated...

>From: Igor Kessel <KBATPO at comcast.net>
>To: Bob Rossato <bob.rossato at att.net>
>CC: s-car-list at audifans.com
>Subject: Re: [s-cars] ecode Xenons
>Date: Thu, 20 Jan 2005 18:56:37 -0500
>
>Bob Rossato wrote:
>>Simply to add more light to the side of the road to be better able to
>>see pedestrians, animals, etc.  The Z beam (actually more like a
>>backwards Z) is a compromise between a completely flat beam and the
>>typical Euro beam that is angled up on the right side (or left for the
>>UK).  Audi may be using that on the Xenons to reduce the possibility of
>>blinding on-coming traffic, or traffic to your right on a multi lane
>>road, as anything below the cutoff is extremely bright.  Which is also
>>why they have the automatic levelers.
>>
>>Bob
>>
>>
>>>-----Original Message-----
>>>From: s-car-list-bounces at audifans.com 
>>>[mailto:s-car-list-bounces at audifans.com] On Behalf Of 
>>>calvinlc at earthlink.net
>>>Sent: Saturday, January 15, 2005 1:38 AM
>>>To: Bob Rossato; 'Igor Kessel'
>>>Cc: s-car-list at audifans.com
>>>Subject: RE: [s-cars] ecode Xenons
>>>
>>>
>>>Bob,
>>>
>>>That makes me ask the question why the beam looks like this...why isn't 
>>>it
>>>the same all the way across?
>>>
>>>--Calvin (apparently headlight challenged)
>>>
>>>
>>>-----Original Message-----
>>>From: Bob Rossato [mailto:bob.rossato at att.net]
>>>Sent: Friday, January 14, 2005 5:40 PM
>>>To: 'Igor Kessel'; calvinlc at earthlink.net
>>>Cc: s-car-list at audifans.com
>>>Subject: RE: [s-cars] ecode Xenons
>>>
>>>
>>>
>>>>calvinlc at earthlink.net wrote:
>>>>
>>>>>I have an '01 A6 and I am wondering why you guys are
>>>
>>>replacing your
>>>Xenons.
>>>
>>>>>So far, my only problem, is the stupid "adjustment" that happens
>>>
>>>while
>>>
>>>>>driving where sometimes my lights wind up pointing only 25 feet in
>>>
>>>front of
>>>
>>>>>the car and sometimes they are great.  Do the European
>>>
>>>ones do away
>>>with
>>>
>>>>>this innane feature that was never needed on headlights
>>>
>>>for the last
>>>100
>>>
>>>>>years?  Thanks.
>>>>>
>>>>
>>>>Calvin,
>>>>once you have experienced the added benefit of the European
>>>
>>>asymmetrical
>>>
>>>>beam, flaring the right side of the wooded road where the deer often
>>>>lurks you'd realise that there's no coming back to the flat American
>>>>beam cut-out.
>>>>
>>>>--
>>>>Igor Kessel
>>>>two turbo quattros
>>>
>>>Igor,
>>>
>>>I retrofitted Xe projectors from a '00 or '01 Euro A6 in my '95 and I
>>>was surprised that the pattern was no different than that of the US DoT
>>>projectors.  Both have what Cibie used to call a Z beam.  Looks sort of
>>>like this.
>>>              ________
>>>_______/
>>>
>>>The only difference between the Euro C5 A6 Xe and US C4 S6 halogen beam
>>>pattern was that the Euro version had the capability, as you are well
>>>aware of, to completely flatten the beam by means of a manual shield for
>>>traveling between the continent and the UK.
>>>
>>>I know the typical Euro halogen beam angles up to the right at about
>>>30deg, but the Euro C5 A6 Xe, at least the ones I got, do not have this
>>>feature.  Not that it can't be cut into the existing shield by some
>>>slight work with a file.
>>>
>>>Bob
>
>That is correct, Bob. The Euro Halogens in my car had the regular European 
>Asymmetrical beam:
>
>          /
>         /
>_______/
>
>The Euro HID projectors (off a wrecked 740i) that I have retrofitted into 
>my car recently have the inverted "Z" beam:
>
>          ___________
>         /
>_______/
>
>I have come to the same conclusion as you have. The most likely reason is 
>to cut off the glare in case of an accidental misalignment.
>
>--
>Igor Kessel
>two turbo quattros
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