REFLECTOR: Nav-Lt Wiring

[Jim Agnew]

You should be aware that there are international standards
not only for lumen output but for consistent light output
across the illuminated angle AND specific color spectrum
requirements.

Jim
--- Scott Derrick <scott at tnstaafl.net> wrote:

> Any body what the lumen requirements are for position
> lights?
> 
> Scott
> 
> At 03:51 PM 9/11/2004, you wrote:
> >Of course, if they are FAA approved, they meet the
> brightness requirements.
> >I thought about designing some red and green LED
> position lights about 5
> >years ago that would retrofit into a standard Whelen
> housing, but at that
> >time it wasn't possible to get enough LEDs in a standard
> Whelen housing to
> >get out enough brightness.   I looked on Whelen's
> website today, and they
> >only make forward red and green position lights; their
> LED position lights
> >don't shine out the sides.
> >
> >It occurs to me while I am writing this that for my
> airplane there is no
> >reason to use a standard Whelen housing, and in that
> case it is going to be
> >no problem meeting the FAA spec for red and green and
> white position lights
> >with LEDs.  Much longer life, vibration immune, 1/5th
> the power, smaller
> >(lighter) wire out to the wings, you gotta love it.
> >
> >Doug
> >
> >
> >----- Original Message -----
> >From: "Chuck Jensen" <cjensen at dts9000.com>
> >To: "'Velocity Aircraft Owners and Builders list'"
> <reflector at tvbf.org>
> >Sent: Saturday, September 11, 2004 12:18 PM
> >Subject: RE: REFLECTOR: Nav-Lt Wiring
> >
> >
> > > There's been discussion on Reflector and other sites
> about the relative
> > > brightness of the LEDs v. Incandescents.  Is there a
> discussion concensus?
> > > Certainly, the current draw is no contest, but are
> LEDs close in
> > > brightness/visibility?
> > >
> > > Chuck
> > >
> > > -----Original Message-----
> > > From: reflector-bounces at tvbf.org
> [mailto:reflector-bounces at tvbf.org]On
> > > Behalf Of Scott Derrick
> > > Sent: Saturday, September 11, 2004 10:05 AM
> > > To: Velocity Aircraft Owners and Builders list
> > > Subject: Re: REFLECTOR: Nav-Lt Wiring
> > >
> > >
> > > I have a Whelen system.
> > >
> > > I need to get on the stick and replace those
> antiquated,  amperage
> > > hog,  life limited, incandescent position light bulbs
> with LEDs.
> > >
> > > It just seems ludicrous to be using 6 or 7 amps for 4
> little light
> > > bulbs.  I noticed even Whelen has LED equiped
> position assemblies.
> > >
> > > possible replacements:
> > >
> > > http://www.superbrightleds.com/1157.htm
> > >
> > > Scott
> > >
> > > At 08:32 PM 9/10/2004, you wrote:
> > > >Well, I think I have answered my own questions.
> > > >
> > > >
> > > >  The specs for the Whelen power supply are not on
> the box, or in the
> > > > instructions. They are, however, in the product
> catalog. They say that
> > > > the strobes draw 4-Amps at 14V. The Nav lights all
> together draw 7-amps.
> > > >
> > > >So, I think it makes more sense to run separate
> lines for the nav and
> > > >strobes as Keith said.
> > > >
> > > >I am waiting for the ratings on the switches that I
> got from Lancair (
> > > >listed in a previous post), before I decide how many
> relays I need.
> > > >Looking at the wire tables, it looks like I can run
> a relay for the NAVS,
> > > >and run the Strobes off of a straight 18G wire from
> the switch. IF... the
> > > >switch can handle the load. I can probably get by
> with running all of it
> > > >straight from the switches... but we will see.
> > > >
> > > >Back to the pencils and the wires...
> > > >
> > > >
> > > >  Kurt Winker
> > > >_______________________________________________
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> > >
> > > "Those who sacrifice freedom to get security, deserve
> neither."
> > > - Benjamin Franklin
> > >
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> >
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> 
> 
> "Those who sacrifice freedom to get security, deserve
> neither."
> - Benjamin Franklin
> 
> _______________________________________________
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> 
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> 


=====
James F. Agnew
Jim_Agnew_2 at Yahoo.Com
Tampa, FL
Velocity 173 Elite Aircraft Completed & Flying