[s-cars] Re: UrA6/UrS6 US DOT headlight

Thu Jun 10 11:37:58 EDT 2004

Basic Physics says Energy in = Energy out. 
Temperature, BTW, is NOT energy, just reflective
of the type of energy of the molecules (kinetic). 

Since the HiEnergy Infrared bulbs put out more
LIGHT energy (lumens) for the same input energy
(rated wattage) the actual heat energy (ability
to warm the surrounding lamp housing and raise
IT's temperature to the melting point) must actually
be less. Yes the BULB runs at a higher temp, but
it can't heat the lamp housing as well. 

Analogy: Space Heater run at about 300 - 400 degrees F
and can effectively heat a room, given adequate time
because their wattage is usually around 1K to 2K Watts.

A Propane torch probably (don't actually know, guessing
by flame color) runs at around 600 to 700 degrees F but
probably has only few 10's of Watts of heat energy, and
does not effectively heat a room. 

So, it's not the temperature that will melt the housings,
it's the Heat energy, which, by the numbers, must be less
with these new bulbs. 

To put it this way, I'm putting my money where my mouth is,
my bulbs shipped yesterday, and I'm not too concerned about 
my housings melting. And no, AFAIK, no one has tried this 
yet to be sure. I'll post if there's a problem though. 

LL - NY, a.k.a. the Physics Teacher

-- <tony.curran at sympatico.ca> wrote:
I wasn't happy with the stock lo-beam bulbs. I replaced mine about a year ago with PIAA Xtreme White bulbs - direct replacement - same wattage more lumens, probably more expensive than the GP. Significant difference. I'd post the pics but don't have them on a serever. Can e-mail them if you are interested.

I replaced my headlight lenses with Euro spec ones a couple of weeks ago and noticed no deformation of the replectors due to overheating.

Tony
96 S6

> 
> From: "Robert Welch" <Robert.Welch at TechnologyCrafters.com>
> Date: 2004/06/10 Thu AM 02:12:37 EST
> To: "'Dave Forgie'" <forgied at ae.ca>,  <s-car-list at audifans.com>, 
> 	<quattro20v at telus.net>
> CC: l.leung at juno.com
> Subject: RE: [s-cars] Re: UrA6/UrS6 US DOT headlight
> 
> Hey guys,
> 
> I'd just like to double check the obvious question regarding the group
> purchase/ upgrade to Halogen Infrared Bulbs.....can I safely perform this
> upgrade and not have the plastic reflector melt due to the increased heat of
> the bulbs? I've read the posts and the URL's, I'd just like to confirm that
> this simple upgrade replaces nothing but the bulbs, while the flimsy OEM
> reflectors remain in place without melting down.
> 
>  I'm presuming someone has already 'been there done that".
> 
> Thanks a lot,
> 
> Robert Welch
> 95 S6 Avant
> 93 S4 
> Golden, CO
> 
> 
> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of Dave Forgie
> Sent: Sunday, June 06, 2004 5:49 PM
> To: s-car-list at audifans.com; quattro20v at telus.net
> Cc: l.leung at juno.com
> Subject: RE: [s-cars] Re: UrA6/UrS6 US DOT headlight
> 
> Yeh, like you said.  H1 low and 9005 (65 W) high.  The question is still,
> why did you get an H1 low?  Igor, before you changed to Euro's what did your
> 97 S6 have for headlight bulbs?
> 
> Dave F.
> 
> >>> "Sean Douglas" <quattro20v at telus.net> 06/06/04 04:08PM >>>
> Oops, I meant 9005 high.
> 
> Sean
> 
> P.S. Urs4.com is wrong on this and has reversed 9005 and 9006.
> http://www.urs4.com/technical/headlights.html#euro%20vs%20dot  
> 
> Sean Douglas
> 1997 Audi S6 - MTM Stage 1+
> 1990 Audi 90Q20V
> 
> 
> > -----Original Message-----
> > From: s-car-list-bounces at audifans.com  
> > [mailto:s-car-list-bounces at audifans.com] On Behalf Of Sean Douglas
> > Sent: Sunday, June 06, 2004 3:59 PM
> > To: 'Dave Forgie'; s-car-list at audifans.com  
> > Cc: l.leung at juno.com  
> > Subject: RE: [s-cars] Re: UrA6/UrS6 US DOT headlight
> >  
> >  
> > Dave:
> >  
> > Minor correction, the 1997 S6 got H1 low and 9006 high.
> >  
> > Sean Douglas
> > 1997 Audi S6 mit RS2 goodies
> >  
> >  
> >  
> > > -----Original Message-----
> > > From: s-car-list-bounces at audifans.com  
> > > [mailto:s-car-list-bounces at audifans.com] On Behalf Of Dave Forgie
> > > Sent: Sunday, June 06, 2004 12:54 PM
> > > To: s-car-list at audifans.com  
> > > Cc: l.leung at juno.com  
> > > Subject: [s-cars] Re: UrA6/UrS6 US DOT headlight
> > >  
> > >  
> > > Bob and Larry:  For the most part (99%) you are correct.  The
> > > odd late (eg. 04/97) build date S6 (only in Canada in  
> > > NAmerica) got H1 High and lows.  I do NOT know why.  The  
> > > biggest thing is the newer Toshiba 9012 bulbs can replace the  
> > > 9006 and the 9011 can replace the 9005 at relatively low cost  
> > > for a lot more lumens.  Check these postings:
> > >  
> > http://www.audifans.com/pipermail/s-car-list/2004-May/029598.html  
> >  
> > and
> >  
> http://www.audifans.com/pipermail/s-car-list/2004-June/029709.html  
> Dave F.
> 
> Trying to confirm the bulb requirements
> > for the UrA6/S6
> >
> > Low Beam 9006
> > High Beam 9005
> > Fog H3
> > ?
> >> LL - NY
> 
> 
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