[ale] More on LEDs...

[Adrya Stembridge]

I used one of these as the primary brake light of my KTM dual sport:

http://www.ledlight.com/36_led_ultra_bright_low_profile_s25.aspx

The light output is equivalent to the incandescent 1157, in a subjective
comparison.   This particular bulb throws light to the sides and back, so
it may be a better fit for your car application.

I'm now using this one:
http://www.ledlight.com/s25-20-super-flux-led-light.aspx

I've also added a set of U32 Hyperlights, which are visible to the point of
being semi-obnoxious to someone directly behind me.

Adrya


On Fri, Aug 16, 2013 at 3:10 PM, Ron Frazier (ALE) <
atllinuxenthinfo at techstarship.com> wrote:

> Hi all,
>
> I'm learning more about what you can, and cannot do with leds.  I
> discovered the tail light in my car was out.  The car is a Hyundai Santa Fe
> compact suv.  It has a combined brake light and tail light which uses a
> dual filament bulb, an 1157.  I found the 1157R led bulb at autozone and
> put it in the car.  The bulb was barely visible at all when the brake pedal
> was pushed, although it did turn on.
>
> It just so happens that this car has a very complex reflector mechanism
> that's designed to take light from all directions around the bulb and
> channel it to the rear.  It also had a shield in front of the bulb which
> prevents light from going directly to the rear, presumably for the benefit
> of other drivers.
>
> So, the ONLY way the light can get out is to go to the side and bounce off
> the mirror.  The replacement bulb that autozone had essentially had 10 or
> so conventional leds in an array on a flat circuit board.  Almost all of
> its light output is directly to the rear and very little to the side.  So,
> with the new led bulb, my brake lights were almost invisible in the day
> time.
>
> Oh well, I'm back to edison style bulbs, and, unfortunately, they work
> much better, they just don't last long.
>
> Sincerely,
>
> Ron
>
>
> -snip-
>
>
>
> --
>
> Sent from my Android Acer A500 tablet with bluetooth keyboard and K-9 Mail.
> Please excuse my potential brevity if I'm typing on the touch screen.
>
> (PS - If you email me and don't get a quick response, you might want to
> call on the phone.  I get about 300 emails per day from alternate energy
> mailing lists and such.  I don't always see new email messages very
> quickly.)
>
> Ron Frazier
> 770-205-9422 (O)   Leave a message.
> linuxdude AT techstarship.com
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>
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