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From: David (no email)
Date: Thu May 10 2007 - 12:04:05 EDT
I have wondered that myself. If there is away to 'hack' the LED rope
light for use on a boat. Would light up the living space nicely and be
able to control it via dimmer.
Rit wrote:
> Ken,
>
> With your insight into LED’s, could you advise me if you make or know where
> I can get some interior cabin 12v rope LED’s.
>
> We want to line about 30’ on each side of the boat with a LED light rope.
>
> I see them everywhere in 120v, but not in 12v.
>
> Thanks in advance and by the way I’m still using the info you sent me many
> years ago on the cd’s. thanks again for that gesture.
>
> Mike Ritenour
> s.v. LaVida
> CD33
> Olcott, NY
> 716.870.9454
>
> -----Original Message-----
> From:
> [mailto:]On Behalf Of Ken James
> Sent: Tuesday, May 08, 2007 11:49 AM
> To:
> Subject: [world-cruising] Re:LED side lights
>
> I make LED nav lights, (www.firststarled.com) so can answer you question
> with some updated info.
>
> No, the Lopolight is not overkill. It uses older 'lamp' style leds, and
> you need a lot of them to get enough light where it needs to be.
> The other lights use newer and larger 'lamp style' leds, so you do not
> need as many of them.
>
> It is possible to use just one led per sidelight now, as the newest leds
> can run at five watts and 360 deg F. You would not even be 'making them
> sweat' in this application! However, even so, you would need a BIG heat
> sink to run them at full power! These leds are not the traditional 'lamp
> style' but are surface mount devices and can make more light because
> they use much more power, and can do that because the can get rid of the
> heat they make much better than the older style leds. But once the heat
> is out of the leds, you must have a means of getting it out of the
> light, that is why you need a heat sink. Orca Green uses some of the
> newer (but not the newest) leds in their (very nice) units.
> My new MKIV units (not shown on the web page) also use less leds, in
> this case two of the newest high tech leds available per side. I use a
> large copper heat sink and active thermal feedback to control the temp
> of the leds.
>
> Less leds means a better, more even beam pattern and much better efficiency.
>
> The Lopolight is a very, very good unit but kinda bulky and not as
> efficient as some others.
>
> The second light you sent the link to looks a lot like a Perko model,
> good units, but again not as efficient, and not as rugged as the Lopolight.
>
> Don't go for the 'bottom line', this is a case of 'quality counts'!
>
> One thing that you do not seem aware of is transient and surge
> protection, neither one of these lights have a very high level of that
> built-in although the Lopolight would be my choice there.
>
> BTW, although my MKIV units are NOT certified, they DO exceed the
> intensity requirements.
>
> And why use led sidelights if you can put a led tricolor on top of the
> mast? That way you can use the tri for sailing, just one (cheaper)
> light, and the sidelights can stay old fashioned since they will be on
> when you start the engine.
>
> I even make a masthead light that is a tri, steaming, and day-sensing
> anchor light all in one retro-fit led bulb. Very cost effective that
> way. Orca Green also makes a very nice dual function masthead light.
>
> If you do want led deck level lights, another option instead of
> sidedlights for the bow is a led bow combo. This gets the lights out of
> the way from feet and winch handles and big deck level gennys that may
> block it.
>
> As a last note, be careful, some cheap Chinese made lights are
> dangerous in my opinion as the do nothing to make the proper color
> sectors between red and green for instance and will show a confusing
> display to other boats...with leds you cannot just aim and hope for the
> best, for small leds light units you must use some form of optics or
> light shields to obtain the proper sectors. Also they say to use a white
> led bulb for a tri, that will not work at all well as up to 80% of the
> light will eb lost through the filters and you will get only a dim glow,
> not good!
>
>
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.5.467 / Virus Database: 269.6.6/795 - Release Date: 5/9/2007 3:07
> PM
>
>
> [Non-text portions of this message have been removed]
>
>
>
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