SailNet Community - Reply to Topic

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > LED Replacement Bulbs
 Not a Member? 


Thread: LED Replacement Bulbs Reply to Thread
Title:
  

By choosing to post the reply below you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Topic Review (Newest First)
02-13-2007 09:10 PM
Goodnewsboy If you want to start with an anchor light, see Terry's stuff at:
http://yachtvalhalla.net/projects/an...chorlights.htm
02-13-2007 05:36 PM
Idiens
Quote:
Originally Posted by Shack
I've been reseraching and hunting for LED bulbs that fit my current recepticles.
Me too. I found some at the Dusseldorf boat show. But was told that internationally they are not yet legally permitted for navigation lights.

www.svb.de Part Nr. 12608

Pity, I could use the power saving and longevity.
02-13-2007 03:09 PM
sailingdog I'd imagine that the vertical requirement is determined by the type of boat. A monohull may require a greater degree of vertical angle coverage than my trimaran..
02-13-2007 12:15 PM
Shack
Tri-Color

SD,
Your right. I think its 112.5 degrees for port and strbd (225 total arc centered to the bow.) (of course, that leaves 135 deg for the stern light).

You know . . . the colregs don't specifiy a vertical angle requirement. I wonder why. Although the ocean is a fairly 2-D environment, a sailboat heeling on waves and observers at different heights can affect the visibility of these lights. Have you ever heard of a vertical angle requirement by the USCG or intl ColRegs?

I'll try to go out to my slip tonight and give it a shot. I bought the bulbs by accident - I might as well experiment with them before I return'em.

Shack
02-12-2007 08:14 PM
sailingdog Shack. Believe all three lights on a tri-color have ranges greater than 100˚ in coverage, so the LED bulbs you're looking at are probably not sufficient to be legal.
02-12-2007 08:00 PM
Shack
Col Regs

Well . .
I pulled out my COLREGS and my situation requies 2nm lights (1nm for sidelights). Annex I translates that into 4.3 candelas for 2nm and 0.9 cd for 1nm. (4300 mcd and 900 mcd respectively.)

The LED's that fit into the old standard recepticles can do 8200 mcd!! This exceeds the instensity requirements for my boat. However, the two bulbs I'm looking at have a fan of 12 degrees or 100 degrees. Not quite what I need for sidelights or the stern light.

I have found some bulbs at the local West Marine that fit into my sockets (see 10956 on pg 569 of the 2006 cataloge), but now I am doubtful as to their application in my sidelights because of this possible limits in the horizontal plane. Tomorrow, I will try to install a couple and see what happens. Stay tuned.

All this might be simpler if I went out an purchased and installed a new set of those fancy sidelights with the LEDs already in them.

Later,
Shack
02-12-2007 07:47 PM
tdw SD,
I can't quote chapter and verse but I believe there are LED light sources that are approved replacements for incandescent in nav lights but not for tricolours.
TD
02-12-2007 05:08 PM
sailingdog As for converting Candelas to Lumens... look here.

Be aware, just because a bulb is the same or greater brightness, doesn't mean that it will be able to satisfy COLREGs if used in an application or fixture it wasn't originally designed for. This is important if you get involved in a collision and get sued... If you want an LED anchor light or tri-color, I think you're just better off, biting the bullet, and buying one that is USCG approved.

AFAIK, there isn't a LED bulb or array made right now, that is approved for use in an older incandescent navigation light fixture that will meet COLREGs approval.
02-12-2007 04:31 PM
Shack
LED Replacement Bulbs

I've been reseraching and hunting for LED bulbs that fit my current recepticles. The idea here is to convert old lights bulbs into LED while using the old standard double contact base bayonet recepticles.

LED running lights are out there, but I don't need to buy a new set - just the replacement bulbs. I have found some sources online.

http://www.hollandmarine.com/newproducts.html
http://www.superbrightleds.com/other.htm has the 12 and 19 LED arrays for $7 and $10 respectively.

The big issue is satifying the ColReg distance and the available viewing angle.
If anyone has had successes, please let me know.

My question:
What Microcandella (mcd) is required to achieve similar Lumens for 2nm visibility? The big problem is that its not easy to translate mcd in to Lumens. The issue is that LEDs are measured in mcd because of the angle of the cast light. Incandescents throw 360 deg light, LED's are more directive and focused. Not quite columated, but I guess in between. The same numbers in an LED array configured differently will produce different equivalent Lumens. (Its all ball bearings to me. )

I need a bulb.

Thanks
Shack

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


All times are GMT -4. The time now is 10:03 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.