Date: Thu, 2 Jul 2015 07:01:05 -0500
Reply-To: Jim Felder <jim.felder@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Jim Felder <jim.felder@GMAIL.COM>
Subject: Re: LED Headlight bulbs
In-Reply-To: <AFCBAB30-0FD6-4F2B-A52D-3E2F818C053C@shaw.ca>
Content-Type: text/plain; charset=UTF-8
Aliastair is right. If you read about the development of these H series
bulbs you will find that waited until a manufacturing process had been
invented that reliably positioned the filament in the exact same place
inside the bulb before a successful product could be made. The placement f
a point source of light is that exacting in these things.
Jim
On Wed, Jul 1, 2015 at 8:07 PM, Alistair Bell <albell@shaw.ca> wrote:
> You probably know this but the drop in H4 LED bulbs have some issues. The
> halogen bulb filaments are placed precisely to provide the defined beam
> pattern and the high low change.
>
> I haven't seen a led replacement that replicates that light
> source/filament placement.
>
> And there is a heat issue with led lights. The higher wattage LED bulbs
> have a heat sink at the base, finned and surprisingly large. The heat sink
> might interfere with some installs.
>
> Don wrote about blinding blue tinted lights. I'm guessing they were HID
> bulbs in a lamp designed for halogen bulbs. I have had direct experience
> with one of those install. It was completely unusable, sure you got a lot
> of light but it had no cut off, very glaring, impossible to use in rain or
> fog.
>
> The good LED lamps are designed as a unit, bulb and reflector. They are
> not cheap nuts they seem to be coming down in price. I look forward to them
> being affordable.
>
> Alistair
>
>
>
>
>
> > On Jul 1, 2015, at 5:50 PM, Jack Reynaert <jack007@COMCAST.NET> wrote:
> >
> > 9011 (HIR1) bulb: 2350 lumens, 65 watts = 36 lm/w.
> > H9 bulb: 2100 lumens, 65 watts = 32+ lm/w.
> > 9012 (HIR2) bulb: 1870 lumens, 55 watts = 34 lm/w.
> > H7 bulb: 1450 lumens, 55 watts = 26+ lm/w.
> >
> > -----Original Message-----
> > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of Edward Maglott
> > Sent: Wednesday, July 1, 2015 11:01 AM
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: Re: LED Headlight bulbs
> >
> > The ad says 1500LM. That is the light output. compared that to a
> halogen
> > H4 bulb's output. Also consider a halogen H4 has filaments that emit
> light in a sphere and the LED does not. The reflector may not work as well
> with the LED light source.
> >
> >> On Wed, Jul 1, 2015 at 10:40 AM, Jim Arnott <jrasite@eoni.com> wrote:
> >>
> >> I'll let you know when they get here.... (A group of LEDs that draw
> >> 80w would light your parking lot....)
> >>
> >> Google is your friend....
> >>
> >> http://www.statelineeco.com/resources-eco-education/lighting-basics/le
> >> d-watt-conversion-table-light-types-guide.html
> >>
> >> Jim
> >>
> >>
> >> -----Original Message-----
> >> From: T Collins
> >> Sent: Wednesday, July 01, 2015 7:20 AM
> >> To: vanagon@GERRY.VANAGON.COM
> >> Subject: Re: [VANAGON] LED Headlight bulbs
> >>
> >> So is 80W rated is that the high or the low? , meaning what happens
> >> when you pull on the lever to get high beams? DO you get 80w on low
> >> and also on high?
> >>
> >> I hope I'm making sense since I have only seen bulbs with 2 ratings in
> >> watts to differentiate between high and lows.
> >>
> >> On Tue, Jun 30, 2015 at 11:54 PM, Jim Arnott <jrasite@eoni.com> wrote:
> >>
> >> For $19.00/pair, I’ll give them a try.
> >>>
> >>> 80w actual of LED would be in a MUCH larger package.
> >>>
> >>> Jim
> >>>
> >>
>
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