I think perhaps you're a bit behind on the current LED technology. I'm looking
at http://store.sundancesolar.com/12v18ledbufo.html
Its only 40 lumens but that seems to compare well, I found a chart with a 15w
CF that produces 105 lumens.
This will only be a reading lamp, I've been using a small battery powered
flourescent lamp for awhile. Its okay but not great, not focused enough really.
Of course the problem with that bulb is its price. $35 is alot to pay to find
out I don't like it...
The next choice is a 9w cf which is probably more like 80 lumens although I can
find no real documentation on that.
Even then I should have some more charging capacity although you're right I'll
probably only use the light for 2-3 hours a night so I should have plenty of
reserve...
-Curt
Date: Mon, 9 Apr 2007 07:29:45 -0700
From: Jim Cathey <[EMAIL PROTECTED]>
Subject: Re: [MBZ] OT: 12v lighting
To: Mercedes Discussion List <mercedes@okiebenz.com>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=US-ASCII; format=flowed
> ACK! Incandescent...
> How much light do you think I can get off an incandescent bulb for
2w?
> Thats the whole point of the LED bulb, lighting using only a 5w solar
> panel...
Before I did much more I'd really want to try out the proposed
light source to see if it was really suitable for reading. The
incandescents we use in the camper are very satisfactory. Then
there is also duty cycle, how much reading versus recharging time
do you expect? If the stay is not indefinite you can even afford
to run at a bit of a loss.
The last time I looked fluorescent lamps were still king of the
lumen/watt rating. That's been awhile now. But there are some
very interesting CF lamps in the surplus market that come from
laptop screen backlights. Have to factor in the inverter's
efficiency though.
A LED doesn't eat 12V, so you have to look at how you're planning
to power it. Burning it in a simple resistor would mean that you'd
only get 1/4 the battery life you should. Need a PWM feed to keep
it efficient.
Incandescent offers the advantages of extreme simplicity and a
satisfactorily wide illumination pattern, but at an efficiency
cost. If you're stuck with a 2W bulb you're talking about one
of the dashboard lights. That still might be OK, you'd have to
try it out, and you'd definitely want a good reflector head.
-- Jim
---------------------------------
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Subject: Re: [MBZ] Off Topic Acura's
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If you tell us the asking price we can opine intelligently on whether it is
a good buy or not.
On 4/9/07, Sunil Hari <[EMAIL PROTECTED]> wrote:
>
> They're awesome cars - handle well (not as well as a 124, but you're not
> paying MB prices either), good mileage, very reliable. Esp. the later
> model
> years. Watch out for rear wheel well rust (bane of Honda/Acura) and make
> sure the timing belt was changed every 90Kmi.
>
> In other words, have the timing belt changed before you buy it.
>
> Can be very fast, esp. with the optional 6speed manual.
>
> I would buy one today. No really.
>
>
> On 4/9/07, Donald Snook <[EMAIL PROTECTED]> wrote:
> >
> > Anyone know anything about the Acura Legend. I am looking at a 1995
> > Acura Legend (with 90,000 miles) for my wife. It is cosmetically
> > perfect condition. Paint is perfect, leather seats are REALLY nice. I
> > have not gotten to drive it or even here it run yet. The Legend is the
> > bigger of the Acuras at the time and was replaced by the RL in 1996.
> >
> >
> >
> > Donald H. Snook
> >
> > 1990 300SEL 137K
> >
> > _______________________________________
> > http://www.okiebenz.com
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> > For used parts email [EMAIL PROTECTED]
> >
> > To Unsubscribe or change delivery options go to:
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> >
>
>
>
> --
> Sunil Hari
> 1992 300D 2.5T - 290Kmi - for sale
> [EMAIL PROTECTED]
> 513-205-7474
> _______________________________________
> http://www.okiebenz.com
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>
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>
