[FC] LED taillights

[Rad Davis]

I notice it more with the really large lights, as on current 
Cadillacs.  The "snap-on" effect is not just annoying, it's also a 
feature.  It's very well documented from tests of the '70s and '80s that 
the brightness ramp curve of brake lights and the maximum intensity both 
decreased reaction time of "following driver" test subjects in blind 
tests.  More was better.  This is the reason that there were a couple of 
years of Lincolns that used neon lamps for their rapid rise time before HI 
LEDs became common and cheap.  It's also the reason I'm looking at 
different techniques of putting LEDs  on my once-rearended Greenbrier.




At 10:25 PM 8/16/2006 -0700, Kent Sullivan wrote:
>I like LEDs in general but have noticed that being right behind one of our
>city buses gives me a slight headache, especially if the turn signal (which
>is also LED) is flashing. Perhaps this is because the on/off "snap" is so
>sudden and the difference is so dramatic (very bright to no brightness) and
>because the amount of area flashing is large. Not sure.
>
>Has anyone else noticed this?
>
>--Kent
>-----Original Message-----
>From: corvanatics-bounces at corvair.org
>[mailto:corvanatics-bounces at corvair.org] On Behalf Of Merv Krull
>Sent: Monday, August 14, 2006 10:14 PM
>To: corvanatics at corvair.org
>Subject: Re: [FC] LED taillights
>
>I concur. Even without the lens in place, the led seemed dimmer than the
>1157 with lens.
>I anxiously await the day though, when we can all start replacing our
>household flourescent and incandescent and halogen bulbs to led equivalents.
>
>Sony has an experimental 200 watt equivalent that requires only 1 or 2 watts
>of power and produces almost no heat.
>I also noticed three or four traffic control lights where some of the leds
>have died after only a bit over a year of use.
>toodles
>Merv Krull
>Salmon Arm, BC
>
>----- Original Message -----
>From: "Bill Wells" <brierpath at yahoo.com>
>To: <corvanatics at corvair.org>
>Sent: Sunday, August 13, 2006 8:01 PM
>Subject: [FC] LED taillights
>
>
> > Hey folks,
> >
> >  Has anybody tried out any of the LED bulb replacements for the 1157s used
>
> > in our trucks?
> >  I tried some from superbrightleds.com and they are not as bright as the
> > 1157 standard bulbs.
> >  I had my wife stand back there while I cycled all the rear light
> > functions and then asked her which side looked better. She chose the 1157s
>
> > as I did. The LED units turn on quicker,  but are not as bright. These
> > were red ,24 LED units, wide angle.
> >
> >  Thanks,
> >  Bill Wells
> >
> >
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__________________________________________________________________________
Rad Davis:                                        rad.davis at comcast.net
Corvairs--65, 66 Corsa coupes, '65 'brier Deluxe   http://www.corvair.org/
Keeper of the Forward Control Corvair Primer: 
http://www.mindspring.com/~corvair/fc1.html
"We did Nebraska in seven minutes today. I think that's probably the best 
way to do Nebraska."                            --Brian Shul, _Sled Driver_